Byline Bancorp, Inc. As Issuer, and U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION As Trustee, Paying Agent and Registrar INDENTURE Dated as of August 7, 2025 6.875% Fixed-to-Floating Rate Subordinated Notes due 2035

Exhibit 4.1

Byline Bancorp, Inc.

As Issuer,

and

U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION

As Trustee, Paying Agent and Registrar

INDENTURE

Dated as of August 7, 2025

6.875% Fixed-to-Floating Rate Subordinated Notes due 2035

TABLE OF CONTENTS

ARTICLE I DEFINITIONS AND INCORPORATION BY REFERENCE 1

1.01 Definitions 1

1.02 Compliance Certificates and Opinions 13

1.03 Form of Documents Delivered to Trustee 14

1.04 Acts of Holders 14

1.05 Required Notices or Demands 16

1.06 Language of Notices 17

1.07 Incorporation by Reference of Trust Indenture Act; Conflicts 17

1.08 Effect of Headings and Table of Contents 18

1.09 Successors and Assigns 18

1.10 Severability 18

1.11 Entire Agreement 18

1.12 Benefits of Indenture 18

1.13 Governing Law 18

1.14 Legal Holidays 19

1.15 Counterparts; Electronic Transmission 19

1.16 Immunity of Certain Persons 20

1.17 Waiver of Jury Trial 20

1.18 Force Majeure 20

1.19 USA Patriot Act 20

1.20 No Sinking Fund 20

1.21 Rules of Construction 20

ARTICLE II THE SUBORDINATED NOTES 21

2.01 Forms Generally 21

2.02 Initial Notes and Exchange Notes 22

2.03 Global Subordinated Notes 22

2.04 Restricted Subordinated Notes 22

2.05 Execution and Authentication 23

2.06 Registrar and Paying Agent 24

2.07 Registration of Transfer and Exchange 24

2.08 Exchange Offer 28

2.09 Mutilated, Destroyed, Lost and Stolen Subordinated Notes 28

2.10 Payment of Interest; Rights to Interest Preserved 29

2.11 Persons Deemed Owners 30

2.12 Cancellation 31

2.13 Computation of Interest 31

2.14 CUSIP Numbers 35

ARTICLE III SATISFACTION AND DISCHARGE OF INDENTURE 35

3.01 Satisfaction and Discharge 35

3.02 Defeasance and Covenant Defeasance 36

3.03 Application of Trust Money 39

3.04 Reinstatement 39

3.05 Effect on Subordination Provisions 39

ARTICLE IV REMEDIES 40

4.01 Events of Default; Acceleration 40

4.02 Failure to Make Payments 42

4.03 Trustee May File Proofs of Claim 43

4.04 Trustee May Enforce Claims Without Possession of Subordinated Notes 43

4.05 Application of Money Collected 44

4.06 Limitation on Suits 44

4.07 Unconditional Right of Holders to Payments 45

4.08 Restoration of Rights and Remedies 45

4.09 Rights and Remedies Cumulative 45

4.10 Delay or Omission Not Waiver 45

4.11 Control by Holders 46

4.12 Waiver of Past Defaults 46

4.13 Undertaking for Costs 46

ARTICLE V THE TRUSTEE 47

5.01 Duties of Trustee 47

5.02 Certain Rights of Trustee 47

5.03 Notice of Defaults 50

5.04 Not Responsible for Recitals or Issuance of Subordinated

Notes 50

5.05 May Hold Subordinated Notes 50

5.06 Money Held in Trust 51

5.07 Compensation and Reimbursement 51

5.08 Corporate Trustee Required; Eligibility 52

5.09 Resignation and Removal; Appointment of Successor 52

5.10 Acceptance of Appointment by Successor 53

5.11 Merger, Conversion, Consolidation or Succession to Business 55

5.12 Appointment of Authenticating Agent 55

5.13 Preferred Collection of Claims against Company 56

ARTICLE VI HOLDERS LISTS AND REPORTS BY TRUSTEE AND

COMPANY 56

6.01 Holder Lists 57

6.02 Preservation of Information; Communications to Holders 57

6.03 Reports by Trustee 57

6.04 Reports by Company 57

ARTICLE VII SUCCESSORS 58

7.01 Merger, Consolidation or Sale of All or Substantially

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All Assets 59

7.02 Successor Person Substituted for Company 59

ARTICLE VIII SUPPLEMENTAL INDENTURES 60

8.01 Supplemental Indentures without Consent of Holders 60

8.02 Supplemental Indentures with Consent of Holders 61

8.03 Execution of Supplemental Indentures 62

8.04 Effect of Supplemental Indentures 62

8.05 Reference in Subordinated Notes to Supplemental Indentures 62

8.06 Effect on Senior Indebtedness 62

8.07 Conformity with Trust Indenture Act 63

ARTICLE IX COVENANTS63

9.01 Payment of Principal and Interest 63

9.02 Maintenance of Office 63

9.03 Money for Subordinated Notes Payments to Be Held in Trust 64

9.04 Corporate Existence 65

9.05 Maintenance of Properties 65

9.06 Waiver of Certain Covenants 65

9.07 Dividends 66

9.08 Company Statement as to Compliance 66

9.09 Tier 2 Capital 66

ARTICLE X REDEMPTION OF SECURITIES 66

10.01 Applicability of Article 66

10.02 Election to Redeem; Notice to Trustee 67

10.03 Selection by Trustee of Subordinated Notes to be Redeemed 67

10.04 Notice of Redemption 68

10.05 Deposit of Redemption Price 69

10.06 Subordinated Notes Payable on Redemption Date 69

10.07 Subordinated Notes Redeemed in Part 69

ARTICLE XI SUBORDINATION OF SECURITIES 70

11.01 Agreement to Subordinate 70

11.02 Distribution of Assets 70

11.03 Default With Respect to Senior Indebtedness 73

11.04 No Impairment 73

11.05 Effectuation of Subordination Provisions 73

11.06 Notice to Trustee 74

11.07 Trustee Knowledge of Senior Indebtedness 74

11.08 Senior Indebtedness to Trustee 75

11.09 Subordination Not Applicable to Trustee Compensation 75

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CROSS-REFERENCE TABLE

Note: This Cross-Reference table will not, for any purpose, be deemed part of this Indenture.

INDENTURE

This INDENTURE dated as of August 7, 2025 is between Byline Bancorp, Inc., a Delaware corporation and registered bank holding company (the “Company”), and U.S. Bank Trust Company, National Association, a national banking association duly organized and existing under the laws of the United States of America, as trustee (the “Trustee”).

RECITALS

WHEREAS, the Company has duly authorized the execution and delivery of this Indenture to provide for an issue of $75,000,000.00 in aggregate principal amount of 6.875% Fixed-to-Floating Rate Subordinated Notes due 2035, subject to the terms and conditions set forth in this Indenture.

NOW, THEREFORE, in order to declare the terms and conditions upon which the Subordinated Notes are authenticated, issued and delivered, and in consideration of the premises, and of the purchase and acceptance of the Subordinated Notes by the Holders thereof, the Company and the Trustee agree as follows for the benefit of each other and for the benefit of the respective Holders from time to time of the Subordinated Notes.

Except as otherwise expressly provided in this Indenture or unless the context otherwise requires, the terms defined in this Section for all purposes of this Indenture, any Company Order, any Board Resolution, and any indenture supplemental hereto will have the respective meanings specified in this Section.

“Act,” when used with respect to any Holders, is defined in Section 1.04.

“Additional Interest” has the meaning set forth in the Registration Rights Agreement.

“Affiliate” means, with respect to any specified Person, any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For the purposes of this definition, “control,” when used with respect to any specified Person means the power to direct the management and policies of such Person, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have meanings correlative to the foregoing.

“Applicable Procedures” means, with respect to any transfer or exchange of or for beneficial interests in any Global Subordinated Note, the rules and procedures of the Depositary that apply to such transfer or exchange.

“Authenticating Agent” means any Person authorized by the Trustee in accordance with Section 5.12 to act on behalf of the Trustee to authenticate Subordinated Notes.

“Authorized Officer” means each of the Chief Executive Officer, the President, the Chief Financial Officer and the General Counsel and Corporate Secretary of the Company, together with such other officers or employees of the Company or Bank that they or any of them shall designate.

“Bank” means Byline Bank, an Illinois chartered bank and wholly owned subsidiary of the Company, and its successors.

“Bankruptcy Laws” mean Title 11, United States Code (11 U.S.C. §§101 et seq.) or any similar federal or state law for the relief of debtors.

“Benchmark” means, initially, Three-Month Term SOFR; provided that, if the Calculation Agent determines on or prior to the Reference Time for any Floating Rate Period that a Benchmark Transition Event and its related Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR or the then-current Benchmark, then “Benchmark” means the applicable Benchmark Replacement for such Floating Rate Period and any subsequent Floating Rate Periods.

“Benchmark Replacement” means the Interpolated Benchmark with respect to the then-current Benchmark, plus the Benchmark Replacement Adjustment for such Benchmark; provided that if (a) the Calculation Agent cannot determine the Interpolated Benchmark as of the Benchmark Replacement Date or (b) the then-current Benchmark is Three-Month Term SOFR and a Benchmark Transition Event and its related Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR (in which event no Interpolated Benchmark with respect to Three-Month Term SOFR shall be determined), then “Benchmark Replacement” means the first alternative set forth in the order below that can be determined by the Calculation Agent as of the Benchmark Replacement Date:

If the Benchmark Replacement, as determined pursuant to clause (a), (b), (c) or (d) above would be less than zero, the Benchmark Replacement will be deemed to be zero.

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“Benchmark Replacement Adjustment” means the first alternative set forth in the order below that can be determined by the Calculation Agent, as of the Benchmark Replacement Date:

“Benchmark Replacement Conforming Changes” means, with respect to any Benchmark Replacement, any technical, administrative or operational changes (including, without limitation, changes to the definition of “interest period,” timing and frequency of determining rates with respect to each interest period and making payments of interest, rounding of amounts or tenors, and other administrative matters) that the Calculation Agent or the Company decides may be appropriate to reflect the adoption of such Benchmark Replacement in a manner substantially consistent with market practice (or, if the Calculation Agent or the Company decides that adoption of any portion of such market practice is not administratively feasible or if the Calculation Agent or the Company determines that no market practice for use of the Benchmark Replacement exists, in such other manner as the Calculation Agent or the Company determines is reasonably necessary).

“Benchmark Replacement Date” means the earliest to occur of the following events with respect to the then-current Benchmark:

For the avoidance of doubt, for purposes of the definitions of Benchmark Replacement Date and Benchmark Transition Event, references to the Benchmark also include any reference

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rate underlying the Benchmark (for example, if the Benchmark becomes Compounded SOFR, references to the Benchmark would include SOFR).

For the avoidance of doubt, if the event giving rise to the Benchmark Replacement Date occurs on the same day as, but earlier than, the Reference Time in respect of any determination, the Benchmark Replacement Date will be deemed to have occurred prior to the Reference Time for purposes of such determination.

“Benchmark Transition Event” means the occurrence of one or more of the following events with respect to the then-current Benchmark:

“Board of Directors” means, as to any Person, the board of directors, or similar governing body, of such Person or any duly authorized committee (or subcommittee) thereof.

“Board Resolution” means one or more resolutions, certified by the Secretary or an Assistant Secretary of the Company to have been duly adopted by the Board of Directors and to be in full force and effect on the date of such certification, delivered to the Trustee.

“Business Day” means any day other than a Saturday, Sunday or other day on which banking institutions in the State of Illinois or the Borough of Manhattan, New York, New York are authorized or obligated by law, regulation or executive order to close.

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“Calculation Agent” means the agent appointed by the Company prior to the commencement of the Floating Rate Period (which may include the Company or any of its Affiliates) to act in accordance with Section 2.13. The initial Calculation Agent shall be the Company.

“Commission” means the U.S. Securities and Exchange Commission, as from time to time constituted, or, if at any time after the execution of this Indenture such Commission is not existing and performing the duties now assigned to it under the Trust Indenture Act, then the body performing such duties at such time.

“Company” is defined in the preamble to this Indenture, and shall include any successors to the Company.

“Company Request” and “Company Order” mean, respectively, a written request or order, as the case may be, signed on behalf of the Company by an Authorized Officer and delivered to the Trustee.

“Compounded SOFR” means the compounded average of SOFRs for the applicable Corresponding Tenor, with the rate, or methodology for this rate, and conventions for this rate being established by the Calculation Agent in accordance with:

For the avoidance of doubt, the calculation of Compounded SOFR shall exclude the Benchmark Replacement Adjustment (if applicable) and the spread specified in Section 2.13(2).

“Corporate Trust Office” means the address of the Trustee specified in Section 1.05 or such other address as the Trustee may designate from time to time by notice to the Holders and the Company, or the designated address of any successor Trustee (or such other address as such successor Trustee may designate from time to time by notice to the Holders and the Company).

“Corresponding Tenor” means (i) with respect to Three-Month Term SOFR, three months, and (ii) with respect to a Benchmark Replacement, a tenor (including overnight) having approximately the same length (disregarding Business Day adjustment) as the applicable tenor for the then-current Benchmark.

“Covenant Defeasance” is defined in Section 3.02(3).

“Defaulted Interest” is defined in Section 2.10.

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“Definitive Subordinated Notes” means, individually and collectively, each Restricted Definitive Subordinated Note and each Unrestricted Definitive Subordinated Note, substantially in the form of Exhibit A-l hereto, issued under this Indenture.

“Depositary” means, with respect to any Subordinated Note issuable or issued in whole or in part in global form, the Person designated as depositary by the Company in accordance with this Indenture, and any and all successors thereto appointed as Depositary under this Indenture. The initial Depository shall be The Depository Trust Company.

“Dollars” or “$” means a dollar or other equivalent unit of legal tender for payment of public or private debts in the United States.

“Event of Default” is defined in Section 4.01.

“Exchange Act” means the Securities Exchange Act of 1934, as amended, or any successor statute thereto.

“Exchange Notes” means the Subordinated Notes issued in the Exchange Offer in accordance with Section 2.08.

“Exchange Offer” has the meaning set forth in the Registration Rights Agreement.

“Federal Reserve” means the Board of Governors of the Federal Reserve System.

“Federal Reserve Bank of New York’s Website” means the website of the Federal Reserve Bank of New York at ▇▇▇▇://▇▇▇.▇▇▇▇▇▇▇▇▇▇.▇▇▇, or any successor source.

"Fixed Rate Interest Payment Date” has the meaning set forth in Section 2.13(1).

"Fixed Rate Period” has the meaning set forth in Section 2.13(1).

"Fixed Rate Regular Record Date” has the meaning set forth in Section 2.13(1).

"Floating Rate Interest Payment Date” has the meaning set forth in Section 2.13(2).

"Floating Rate Period” has the meaning set forth in Section 2.13(2).

"Floating Rate Regular Record Date” has the meaning set forth in Section 2.13(2).

“GAAP” means generally accepted accounting principles in the United States set forth in the opinions and pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants, the statements and pronouncements of the Financial Accounting Standards Board and such other statements by such other entities (including the Commission) as have been accepted by a significant segment of the accounting profession, which are applicable at the date of this Indenture.

“Global Subordinated Notes” means, individually and collectively, each Restricted Global Subordinated Note and each Unrestricted Global Subordinated Note, substantially in the form of Exhibit A-2hereto, issued under this Indenture.

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“Government Obligations” means securities which are direct obligations of the United States of America in each case where the payment or payments thereunder are supported by the full faith and credit of the United States of America.

“Holder” means the Person in whose name the Subordinated Note is registered in the Subordinated Note Register.

“Indenture” means this Indenture, as amended and supplemented from time to time in accordance with its terms.

“Initial Notes” means the $75,000,000.00 in aggregate principal amount of the Company’s 6.875% Fixed-to-Floating Rate Subordinated Notes due 2035 issued under this Indenture on the date hereof.

“Interest Payment Date” has the meaning set forth in Section 2.13(2).

“interest period” means the period from and including the immediately preceding Interest Payment Date in respect of which interest has been paid or duly provided for or, if no interest has been paid or duly provided for, from and including the Issue Date to, but excluding, the applicable Interest Payment Date or the Maturity Date or date of earlier redemption, if applicable.

“Interpolated Benchmark” with respect to the Benchmark means the rate determined by the Calculation Agent for the Corresponding Tenor by interpolating on a linear basis between: (1) the Benchmark for the longest period (for which the Benchmark is available) that is shorter than the Corresponding Tenor and (2) the Benchmark for the shortest period (for which the Benchmark is available) that is longer than the Corresponding Tenor.

“Investment Company Event” means the receipt by the Company of a legal opinion from counsel experienced in such matters to the effect that there is a material risk that the Company is or, within 90 days after the receipt of such opinion will be, required to register as an investment company pursuant to the Investment Company Act of 1940, as amended.

“ISDA Definitions” means the 2016 ISDA Definitions published by the International Swaps and Derivatives Association, Inc. or any successor thereto, as amended or supplemented from time to time, or any successor definitional booklet for interest rate derivatives published from time to time.

“ISDA Fallback Adjustment” means the spread adjustment (which may be a positive or negative value or zero) that would apply for derivatives transactions referencing the ISDA Definitions to be determined upon the occurrence of an index cessation event with respect to the Benchmark for the applicable tenor.

“ISDA Fallback Rate” means the rate that would apply for derivatives transactions referencing the ISDA Definitions to be effective upon the occurrence of an index cessation date with respect to the Benchmark for the applicable tenor excluding the applicable ISDA Fallback Adjustment.

“Issue Date” means August 7, 2025.

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“Legal Defeasance” is defined in Section 3.02(2).

“Letter of Transmittal” means the letter of transmittal to be prepared by the Company and sent to all Holders for use by such Holders in connection with an Exchange Offer.

“Major Constituent Bank” means any Subsidiary that is organized as a banking organization under federal or state law and that represents 50% or more of the consolidated assets of the Company determined as of the date of the most recent audited financial statements of the Company.

“Maturity Date” means Stated Maturity.

“Officer” means, with respect to any Person, the chairman of the board, vice chairman of the board, the chief executive officer, the president, the chief operating officer, the chief financial officer, the treasurer, any assistant treasurer, the controller, the secretary or any Vice President of such Person.

“Officers’ Certificate” means a certificate signed on behalf of the Company by two Officers of the Company, one of whom must be the principal executive officer, the principal financial officer or the principal accounting officer of the Company, that complies with the requirements of Section 1.02 and is delivered to the Trustee.

“Opinion of Counsel” means a written opinion from legal counsel who is reasonably acceptable to the Trustee, which opinion meets the requirements of Section 1.02. The counsel may be an employee of or counsel to the Company or any Subsidiary of the Company.

“Outstanding,” when used with respect to any Subordinated Notes, means, as of the date of determination, all such Subordinated Notes theretofore authenticated and delivered under this Indenture, except (1) any such Subordinated Note theretofore cancelled by the Trustee or the Registrar or delivered to the Trustee or the Registrar for cancellation; (2) any such Subordinated Note for whose payment at the Stated Maturity or Redemption Date thereof money in the necessary amount has been theretofore deposited in accordance with this Indenture (other than in accordance with Section 3.02) with the Trustee or any Paying Agent (other than the Company) in trust or set aside and segregated in trust by the Company (if the Company will act as its own Paying Agent) for the Holders of such Subordinated Notes, provided that, if such Subordinated Notes are to be redeemed, notice of such redemption has been duly given in accordance with this Indenture or provision therefor satisfactory to the Trustee has been made; (3) any such Subordinated Note with respect to which the Company has effected Legal Defeasance or Covenant Defeasance in accordance with Section 3.02, except to the extent provided in Section 3.02; and (4) any such Subordinated Note that has been paid in accordance with Section 2.09 or in exchange for or in lieu of which other Subordinated Notes have been authenticated and delivered under this Indenture, unless there will have been presented to the Trustee proof satisfactory to the Trustee that such Subordinated Note is held by a bona fide purchaser in whose hands such Subordinated Note is a valid obligation of the Company; provided, however, in all cases, that in determining whether the Holders of the requisite principal amount of Outstanding Subordinated Notes have given any request, demand, authorization, direction, notice, consent or waiver hereunder, Subordinated Notes owned by the Company or any Affiliate of the Company will be disregarded and deemed not to be

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Outstanding. Subordinated Notes so owned that will have been pledged in good faith may be regarded as Outstanding if the pledgee establishes to the satisfaction of the Trustee the pledgee’s right so to act with respect to such Subordinated Notes and that the pledgee is not the Company or an Affiliate of the Company.

“Participating Broker-Dealer” has the meaning set forth in the Registration Rights Agreement.

“Paying Agent” is defined in Section 2.06.

“Person” means any individual, corporation, partnership, association, limited liability company, other company, statutory trust, business trust, joint venture, joint-stock company, trust, unincorporated organization or government or any agency or political subdivision thereof or any other entity or organization.

“Place of Payment,” with respect to any Subordinated Note, means the place or places where the principal of, or interest on, such Subordinated Note are payable as provided in or under this Indenture or such Subordinated Note.

“Private Placement Legend” means the legend set forth in Section 2.04 of this Indenture to be placed on all Subordinated Notes issued under this Indenture, except where otherwise permitted by the provisions of this Indenture.

“Purchase Agreement” means the Subordinated Note Purchase Agreement concerning the Subordinated Notes, dated as of August 7, 2025, by and among the Company and the purchasers identified therein.

“Redemption Date” with respect to any Subordinated Note or portion thereof to be redeemed, means the date fixed for such redemption by or under this Indenture or such Subordinated Note.

“Redemption Price” with respect to any Subordinated Note or portion thereof to be redeemed, means the price at which it is to be redeemed as determined by or under this Indenture or such Subordinated Note.

“Reference Time” with respect to any determination of a Benchmark means (1) if the Benchmark is Three-Month Term SOFR, the time determined by the Calculation Agent after giving effect to the Three-Month Term SOFR Conventions, and (2) if the Benchmark is not Three-Month Term SOFR, the time determined by the Calculation Agent after giving effect to the Benchmark Replacement Conforming Changes.

“Registrar” is defined in Section 2.06.

“Registration Rights Agreement” means the Registration Rights Agreement in the form attached as Exhibit B to the Purchase Agreement.

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“Regular Record Date” means, with respect to any Interest Payment Date, the corresponding Fixed Rate Regular Record Date or Floating Rate Regular Record Date, as applicable.

“Relevant Governmental Body” means the Federal Reserve and/or the Federal Reserve Bank of New York, or a committee officially endorsed or convened by the Federal Reserve and/or the Federal Reserve Bank of New York, or any successor thereto.

“Responsible Officer” means, when used with respect to the Trustee, any officer within the corporate trust department of the Trustee, including any vice president, assistant vice president, assistant secretary, assistant treasurer, trust officer or any other officer of the Trustee who customarily performs functions similar to those performed by the Persons who at the time will be such officers, respectively, or to whom any corporate trust matter is referred because of such Person’s knowledge of and familiarity with the particular subject and who will have direct responsibility for the administration of this Indenture.

“Restricted Definitive Subordinated Note” means a Definitive Subordinated Note bearing, or that is required to bear, the Private Placement Legend.

“Restricted Global Subordinated Note” means a Global Subordinated Note bearing, or that is required to bear, the Private Placement Legend.

“Restricted Subordinated Note” means a Restricted Global Subordinated Note or a Restricted Definitive Subordinated Note.

“Rule 144” means Rule 144 promulgated under the Securities Act.

“Rule 144A” means Rule 144A promulgated under the Securities Act.

“Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations of the SEC promulgated thereunder.

“Senior Indebtedness” means any obligation of the Company to its creditors, whether now outstanding or subsequently incurred, other than any obligation where, in the instrument creating or evidencing the obligation or pursuant to which the obligation is outstanding, it is provided that the obligation is not Senior Indebtedness. Senior Indebtedness includes, without limitation: (a) the principal (and premium, if any) of and interest in respect of indebtedness of the Company for borrowed money, whether or not evidenced by securities, notes, debentures, bonds or other similar instruments issued by the Company, including obligations incurred in connection with the acquisition of property, assets or businesses; (b) all capital lease obligations of the Company; (c) all obligations of the Company issued or assumed as the deferred purchase price of property, all conditional sale obligations of the Company and all obligations of the Company under any conditional sale or title retention agreement, but excluding trade accounts payable in the ordinary course of business; (d) all obligations of the Company arising from off-balance sheet guarantees and direct credit substitutes, including obligations in respect of any letters of credit, bankers’ acceptance, security purchase facilities and similar credit transactions; (e) all obligations of the Company associated with derivative products, including obligations in respect of interest rate swap, cap or other agreements, interest rate future or options contracts, currency swap agreements,

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currency future or option contracts and other similar agreements; (f) all obligations of the type referred to in clauses (a) through (e) of other persons for the payment of which the Company is responsible or liable as obligor, guarantor or otherwise; (g) all obligations of the type referred to in clauses (a) through (f) of other persons secured by any lien on any property or asset of the Company whether or not such obligation is assumed by the Company; and (h) any deferrals, renewals or extensions of any obligations of the type referred to in clauses (a) through (g) above.

Notwithstanding the foregoing, Senior Indebtedness does not include: (a) the Subordinated Notes; (b) the Company's $75.0 million in aggregate principal amount currently outstanding of its 6.00% Fixed to Floating Rate Subordinated Notes due 2030; (c) trade accounts payable arising in the ordinary course of business; (d) any indebtedness that by its terms is subordinated to, or ranks on an equal basis with, the Subordinated Notes; or (e) without limiting the generality of the foregoing, any subordinated debentures or junior subordinated debentures, of the Company underlying trust preferred securities issued by subsidiary trusts of the Company (including subsidiary trusts of the Company acquired on or after the date hereof) that are outstanding as of the date hereof or that are issued after the date hereof by any such subsidiary trust of the Company, which subordinated debentures or junior subordinated debentures shall in all cases be junior to the Subordinated Notes.

“Significant Subsidiary” means any Subsidiary of the Company that is a “significant subsidiary” as defined in Rule 1-02 of Regulation S-X promulgated by the Commission (as such rule is in effect on the date of this Indenture).

“SOFR” means the secured overnight financing rate published by the Federal Reserve Bank of New York, as the administrator of the benchmark (or a successor administrator), on the Federal Reserve Bank of New York’s Website.

“Special Record Date” for the payment of any Defaulted Interest on any Subordinated Note means a date fixed in accordance with Section 2.10.

“Stated Maturity” means August 15, 2035.

“Subordinated Note” or “Subordinated Notes” means the Initial Notes and the Exchange Notes and, more particularly, any Subordinated Note authenticated and delivered under this Indenture, including those Subordinated Notes issued or authenticated upon transfer, replacement or exchange.

“Subordinated Note Register” is defined in Section 2.06.

“Subordination Provisions” means the provisions contained in Article XI or any provisions with respect to subordination contained in the Subordinated Notes.

“Subsidiary” means a corporation, a partnership, business or statutory trust or a limited liability company, a majority of the outstanding voting equity securities or a majority of the voting membership or partnership interests, as the case may be, of which is owned or controlled, directly or indirectly, by the Company or by one or more other Subsidiaries of the Company. For the purposes of this definition, “voting equity securities” means securities having voting power for the election of directors, managers, managing partners or trustees, as the case may be, whether at all times or only so long as no senior class of stock has voting power by reason of any contingency.

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“Tax Event” means the receipt by the Company of a legal opinion from counsel experienced in such matters to the effect that, as a result of any amendment to, or change (including any final and adopted (or enacted) prospective change) in, the laws (or any regulations thereunder) of the United States or any political subdivision or taxing authority thereof or therein, or as a result of any official administrative pronouncement or judicial decision interpreting or applying such laws or regulations, there exists a material risk that interest payable by the Company on the Subordinated Notes is not, or within 90 days after the receipt of such opinion will not be, deductible by the Company, in whole or in part, for United States federal income tax purposes.

“Term SOFR” means the forward-looking term rate based on SOFR that has been selected or recommended by the Relevant Governmental Body.

“Term SOFR Administrator” means any entity designated by the Relevant Governmental Body as the administrator of Term SOFR (or a successor administrator).

“Three-Month Term SOFR” means the rate for Term SOFR for a tenor of three months that is published by the Term SOFR Administrator at the Reference Time for any interest period, as determined by the Calculation Agent after giving effect to the Three-Month Term SOFR Conventions. All percentages used in or resulting from any calculation of Three-Month Term SOFR shall be rounded, if necessary, to the nearest one-hundred-thousandth of a percentage point, with 0.000005% rounded up to 0.00001%.

“Three-Month Term SOFR Conventions” means any determination, decision or election with respect to any technical, administrative or operational matter (including with respect to the manner and timing of the publication of Three-Month Term SOFR, or changes to the definition of “interest period”, timing and frequency of determining Three-Month Term SOFR with respect to each interest period and making payments of interest, rounding of amounts or tenors, and other administrative matters) that the Calculation Agent or the Company decides may be appropriate to reflect the use of Three-Month Term SOFR as the Benchmark in a manner substantially consistent with market practice (or, if the Calculation Agent or the Company decides that adoption of any portion of such market practice is not administratively feasible or if the Calculation Agent or the Company determines that no market practice for the use of Three-Month Term SOFR exists, in such other manner as the Calculation Agent or the Company determines is reasonably necessary).

“Tier 2 Capital” has the meaning given to the term “Tier 2 capital” in 12 C.F.R. Part 217, as amended, modified and supplemented and in effect from time to time or any replacement thereof.

“Tier 2 Capital Event” means the receipt by the Company of a legal opinion from counsel experienced in such matters to the effect that there is a material risk that the Subordinated Note no longer qualifies, or within 90 days of the date of such legal opinion will not qualify, as Tier 2 Capital (or its then equivalent), as a result of a change in law or regulation, or interpretation or application thereof, by any judicial, legislative or regulatory authority that becomes effective after the date of issuance of this Subordinated Note.

“Trust Indenture Act” means the Trust Indenture Act of 1939, as amended.

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“Trustee” means U.S. Bank Trust Company, National Association, a national banking association duly organized and existing under the laws of the United States of America, as trustee, until a successor replaces it in accordance with the provisions of this Indenture and thereafter means the successor serving hereunder.

“Unadjusted Benchmark Replacement” means the Benchmark Replacement excluding any Benchmark Replacement Adjustment.

“United States” means the United States of America (including the states thereof and the District of Columbia), its territories, its possessions and other areas subject to its jurisdiction.

“Unrestricted Definitive Subordinated Note” means a Definitive Subordinated Note that does not bear, and is not required to bear, the Private Placement Legend.

“Unrestricted Global Subordinated Note” means a Global Subordinated Note that does not bear, and is not required to bear, the Private Placement Legend.

Except as otherwise expressly provided in or under this Indenture, upon any application or request by the Company to the Trustee to take any action under any provision of this Indenture, the Company will furnish an Officers’ Certificate to the Trustee stating that, in the opinion of the signers, all conditions precedent (including covenants compliance with which constitutes a condition precedent), if any, provided for in this Indenture relating to the proposed action have been complied with and an Opinion of Counsel in form and substance reasonably satisfactory to the Trustee stating that, in the opinion of such counsel, all such conditions precedent (including covenants compliance with which constitutes a condition precedent), if any, have been complied with, except that in the case of any such application or request as to which the furnishing of such documents or any of them is specifically required by any provision of this Indenture relating to such particular application or request, no additional certificate or opinion need be furnished.

Each certificate or opinion with respect to which compliance with a condition provided for in this Indenture (other than an Officers’ Certificate provided under Section 9.08) must comply with the provisions of Section 314(e) of the Trust Indenture Act and must include:

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In any case where several matters are required to be certified by, or covered by an opinion of, any specified Person, it is not necessary that all such matters be certified by, or covered by the opinion of, only one such Person, or that they be so certified or covered by only one document, but one such Person may certify or give an opinion with respect to some matters and one or more other such Persons as to other matters, and any such Person may certify or give an opinion as to such matters in one or several documents.

Any certificate or opinion of an officer of the Company may be based, insofar as it relates to legal matters, upon a certificate or opinion of, or representations by, counsel, unless such officer knows, or in the exercise of reasonable care, but without investigation, should know, that the certificate or opinion or representations with respect to the matters upon which his certificate or opinion is based is erroneous.

Any such certificate or opinion of counsel may be based, insofar as it relates to factual matters, upon a certificate or opinion of, or representations by, an officer or officers of the Company stating that the information with respect to such factual matters is in the possession of the Company unless such counsel knows, or in the exercise of reasonable care, but without investigation, should know, that the certificate or opinion or representations with respect to such matters are erroneous.

Where any Person is required to make, give or execute two or more applications, requests, consents, certificates, statements, opinions or other instruments under this Indenture or any Subordinated Note, they may, but need not, be consolidated and form one instrument.

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Promptly upon any record date being set in accordance with this Section 1.04, the Company, at its own expense, will cause notice of the record date, the proposed action by Holders and the expiration date to be given to the Trustee in writing and the Holders in the manner set forth in Section 1.05.

Any notice or communication by the Company or the Trustee to the other is duly given if in writing and delivered in Person or delivered by registered or certified mail (return receipt requested), e-mail or overnight air courier guaranteeing next day delivery, to the other’s address:

If to the Company;

Byline Bancorp, Inc.

▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇

Chicago, IL 60601

Attention: ▇▇▇▇▇ ▇▇▇▇▇, General Counsel

Email: ▇▇▇▇▇▇@▇▇▇▇▇▇▇▇▇▇.▇▇▇

If to the Trustee:

U.S. Bank Trust Company, National Association

▇▇▇ ▇. ▇▇▇▇▇▇▇ ▇▇▇▇▇▇

Chicago, IL 60603

Attention: ▇▇▇▇▇ ▇▇▇▇▇▇

Email: ▇▇▇▇▇.▇▇▇▇▇▇@▇▇▇▇▇▇.▇▇▇

The Company or the Trustee by notice to the other may designate additional or different addresses for subsequent notices or communications.

All notices and communications will be deemed to have been duly given: at the time delivered by hand, if personally delivered; five Business Days after being deposited in the mail, postage prepaid, if delivered by mail; upon confirmation of transmittal (but excluding any automatic reply to such e-mail), if sent by e-mail; and the next Business Day after timely delivery to the courier, if sent by overnight air courier guaranteeing next day delivery.

Any notice required or permitted to be given to a Holder under the provisions of this Indenture will be deemed to be properly delivered by being deposited postage prepaid in a post office letter box in the United States addressed to such Holder at the address of such Holder as shown on the Subordinated Note Register or by delivery electronically through the Applicable Procedures of the Depositary. Any report in accordance with Section 313 of the Trust Indenture Act will be transmitted in compliance with subsection (c) therein. If the Company delivers a notice or communication to Holders, the Company will deliver a copy to the Trustee at the same time.

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In any case where notice to Holders of Subordinated Notes is delivered by mail, neither the failure to deliver such notice, nor any defect in any notice so delivered, to any particular Holder of a Subordinated Note will affect the sufficiency of such notice with respect to other Holders of Subordinated Notes. Any notice that is delivered in the manner herein provided will be conclusively presumed to have been duly given or provided. In the case by reason of the suspension of regular mail service or by reason of any other cause it will be impracticable to give such notice by mail, then such notification as will be made with the approval of the Trustee will constitute a sufficient notification for every purpose hereunder.

Where this Indenture provides for notice in any manner, such notice may be waived in writing by the Person entitled to receive such notice, either before or after the event, and such waiver will be the equivalent of such notice. Waivers of notice by Holders of Subordinated Notes will be filed with the Trustee, but such filing will not be a condition precedent to the validity of any action taken in reliance upon such waiver.

Notwithstanding any other provision herein, where this Indenture provides for notice to any Holder of a Global Subordinated Note, or of an interest therein, such notice will be sufficiently given if given to the Depositary for such Global Subordinated Note (or its designee) according to the Applicable Procedures of such Depositary prescribed for giving such notice.

Any request, demand, authorization, direction, notice, consent or waiver or other Act required or permitted under this Indenture will be in the English language, except that, if the Company so elects, any published notice may be in an official language of the country of publication.

Whenever this Indenture refers to a provision of the Trust Indenture Act, the provision is incorporated by reference in and made a part of this Indenture. The Trust Indenture Act term “obligor” used in this Indenture means the Company and any successor obligor upon the Subordinated Notes.

All other terms used in this Indenture that are defined by the Trust Indenture Act, defined by Trust Indenture Act reference to another statute or defined by Commission rule under the Trust Indenture Act have the meanings so assigned to them as of the date of this Indenture. If and to the extent that any provision of this Indenture limits, qualifies or conflicts with another provision included in this Indenture that is required to be included in this Indenture by any of Sections 310 to 317, inclusive, of the Trust Indenture Act, such required provision will control. If any provision of this Indenture limits, qualifies or conflicts with the duties imposed by Section 318(c) of the Trust Indenture Act, the duties imposed by Section 318(c) of the Trust Indenture Act will control. If any provision of this Indenture modifies or excludes any provision of the Trust Indenture Act that may be so modified or excluded, the provisions of the Trust Indenture Act will be deemed to apply to this Indenture as so modified or will be excluded, as the case may be.

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The Article and Section headings in this Indenture and the Table of Contents are for convenience only and will not affect the construction of this Indenture.

All the covenants, stipulations, promises and agreements in this Indenture by or on behalf of the Company or the Trustee will bind its respective successors and permitted assigns, whether so expressed or not. The Company may assign its rights under this Indenture, but may not assign its obligations under this Indenture, other than in connection with a transaction permitted by Article VII hereof, or as consented to by the Holder of each outstanding Subordinated Note.

In case any provision in this Indenture or any Subordinated Note will be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions will not, to the fullest extent permitted by law, in any way be affected or impaired thereby.

This Indenture and the exhibits hereto set forth the entire agreement and understanding of the parties related to the subject matter hereof and supersedes all prior agreements and understandings, oral or written.

Nothing in this Indenture or any Subordinated Note, express or implied, will give to any Person, other than the parties hereto, any Registrar, any Paying Agent and their respective successors hereunder and the Holders of Subordinated Notes, and the holders of Senior Indebtedness, any benefit or any legal or equitable right, remedy or claim under this Indenture.

This Indenture and the Subordinated Notes will be governed by and construed in accordance with the laws of the State of New York applicable to agreements made or instruments entered into and, in each case, performed in said State (without giving effect to any laws or principles of conflict of laws that would apply the laws of a different jurisdiction).

Unless otherwise specified in or under this Indenture or any Subordinated Notes, in any case where any Interest Payment Date, Stated Maturity or Redemption Date of, or any other day on which a payment is due with respect to, any Subordinated Note will be a day that is not a Business Day at any Place of Payment, then (notwithstanding any other provision of this Indenture or any Subordinated Note other than a provision in any Subordinated Note or in the Board Resolution, Officers’ Certificate or supplemental indenture establishing the terms of any Subordinated Note that specifically states that such provision will apply in lieu hereof) payment

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need not be made at such Place of Payment on such date, but such payment may be made on the next succeeding day that is a Business Day at such Place of Payment with the same force and effect as if made on the Interest Payment Date, at the Stated Maturity or Redemption Date or on any such other payment date, as the case may be, and no interest will accrue on the amount payable on such date or at such time for the period from and after such Interest Payment Date, Stated Maturity, Redemption Date or other payment date, as the case may be, to the next succeeding Business Day, provided, that in the event that any scheduled payment date falls on a day that is not a Business Day and the next succeeding Business Day falls in the next succeeding calendar month, such payment date will be accelerated to the immediately preceding Business Day, and, in each such case, the amounts payable on such Business Day will include interest accrued to, but excluding, such Business Day.

This Indenture may be executed in several counterparts, each of which will be an original and all of which will constitute but one and the same instrument. Any electronically transmitted copies hereof or signature hereon will, for all purposes, be deemed originals. The words “execution,” “signed,” “signature,” and words of like import in this Agreement or in any other certificate, agreement or document related to this Indenture or the Subordinated Notes shall include images of manually executed signatures transmitted by electronic format (including, without limitation, “pdf”, “tif” or “jpg”) and other electronic signatures (including, without limitation, DocuSign and AdobeSign). The use of electronic signatures and electronic records (including, without limitation, any contract or other record created, generated, sent, communicated, received, or stored by electronic means) shall be of the same legal effect, validity and enforceability as a manually executed signature or use of a paper-based recordkeeping system to the fullest extent permitted by applicable law, including the Federal Electronic Signatures in Global and National Commerce Act, the New York State Electronic Signatures and Records Act and any other applicable law, including, without limitation, any state law based on the Uniform Electronic Transactions Act or the Uniform Commercial Code. The Company agrees to assume all risks arising out of the use of using digital signatures and electronic methods to submit communications to the Trustee, including without limitation the risk of the Trustee acting on unauthorized instructions, and the risk of interception and misuse by third parties.

No recourse under or upon any obligation, covenant or agreement contained in this Indenture, or in any Subordinated Note, or because of any indebtedness evidenced thereby, will be had against any past, present or future shareholder, employee, officer or director, as such, of the Company or the Trustee of any predecessor or successor, either directly or through the Company or the Trustee or any predecessor or successor, under any rule of law, statute or constitutional provision or by the enforcement of any assessment or by any legal or equitable proceeding or otherwise, all such liability being expressly waived and released by the acceptance of the Subordinated Notes by the Holders and as part of the consideration for the issue of the Subordinated Notes.

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EACH PARTY HERETO IRREVOCABLY WAIVES, AND EACH HOLDER OF ANY SUBORDINATED NOTES BY ITS ACCEPTANCE THEREOF WILL BE DEEMED TO HAVE IRREVOCABLY WAIVED, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS INDENTURE, THE SUBORDINATED NOTES OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY.

In no event will the Trustee be responsible or liable for any failure or delay in the performance of its obligations hereunder arising out of or caused by, directly or indirectly, forces beyond its control, including, without limitation, strikes, work stoppages, pandemics, accidents, acts of war or terrorism, civil or military disturbances, nuclear or natural catastrophes or acts of God, and interruptions, loss or malfunctions of utilities, communications or computer (software and hardware) services; it being understood that the Trustee will use reasonable efforts that are consistent with accepted practices in the banking industry to resume performance as soon as practicable under the circumstances.

The Trustee hereby notifies the Company that in accordance with the requirements of the USA Patriot Act, it is required to obtain, verify and record information that identifies the Company, which information includes the name and address of the Company and other information that will allow the Trustee to identify the Company in accordance with the USA Patriot Act.

The Subordinated Notes are not entitled to the benefit of any sinking fund.

Unless the context otherwise requires:

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The Subordinated Notes and the Trustee’s certificate of authentication will be substantially in the form of Exhibit A-1 and Exhibit A-2, as applicable, which are a part of this Indenture. The Subordinated Notes may have notations, legends or endorsements required by law, stock exchange rule or usage (provided that any such notation, legend or endorsement is in a form acceptable to the Company). The Company will provide any such notations, legends or endorsements to the Trustee in writing. Each Subordinated Note will be dated the date of its authentication. The terms and provisions contained in the Subordinated Notes will constitute, and are hereby expressly made a part of this Indenture and the Company and the Trustee, by their execution and delivery of this Indenture, agree to such terms and provisions and to be bound thereby. However, to the extent any provision of any Subordinated Note irreconcilably conflicts with the express provisions of this Indenture, the provisions of this Indenture will govern and be controlling.

The Initial Notes will be issued initially in the form of one or more Restricted Global Subordinated Notes. The Exchange Notes will be issued initially in the form of one or more Unrestricted Global Subordinated Notes. Except as provided in Section 2.07, Holders of Definitive Subordinated Notes will not be entitled to transfer Definitive Subordinated Notes in exchange for beneficial interests in Global Subordinated Notes, and owners of beneficial interests in Global Subordinated Notes will not be entitled to receive physical delivery of Definitive Subordinated Notes.

Each Global Subordinated Note issued under this Indenture will be deposited with the Trustee at its Corporate Trust Office, as custodian for the Depositary, and registered in the name of the Depositary or the nominee thereof, duly executed by the Company and authenticated by the

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Trustee as hereinafter provided. The aggregate principal amount of any Global Subordinated Note may from time to time be increased or decreased by adjustments made on the records of the Trustee and the Depositary as hereinafter provided. Any adjustment of the aggregate principal amount of a Global Subordinated Note to reflect the amount of any increase or decrease in the amount of outstanding Subordinated Notes represented thereby will be made by the Trustee in accordance with instructions given by the Holder thereof as required by Section 2.07 hereof and will be made on the records of the Trustee and the Depositary.

Each Restricted Subordinated Note will bear a legend in substantially the following form:

“THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY APPLICABLE STATE SECURITIES LAWS OR ANY OTHER APPLICABLE SECURITIES LAW AND MAY NOT BE TRANSFERRED, SOLD OR OTHERWISE DISPOSED OF EXCEPT (A) PURSUANT TO, AND IN ACCORDANCE WITH, A REGISTRATION STATEMENT THAT IS EFFECTIVE UNDER THE SECURITIES ACT AT THE TIME OF SUCH TRANSFER; (B) TO A PERSON THAT YOU REASONABLY BELIEVE TO BE A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT OR TO A PERSON THAT YOU REASONABLY BELIEVE TO BE AN INSTITUTIONAL ACCREDITED INVESTOR AS DEFINED IN RULE 501(A)(1), (2), (3) OR (7) OF REGULATION D UNDER THE SECURITIES ACT; OR (C) UNDER ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT (INCLUDING, IF AVAILABLE, THE EXEMPTION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT), AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS OR BLUE SKY LAWS, AS EVIDENCED BY A LEGAL OPINION OF COUNSEL IN FORM AND SUBSTANCE REASONABLY SATISFACTORY TO THE COMPANY TO THE EFFECT THAT REGISTRATION IS NOT REQUIRED.”

The Private Placement Legend set forth above will be removed and a new Subordinated Note of like tenor and principal amount without such Private Placement Legend will be executed by the Company, and upon written request of the Company (together with an Officers’ Certificate and an Opinion of Counsel) given at least three Business Days prior to the proposed authentication date, the Trustee will authenticate and deliver such new Subordinated Note to the respective Holder, in each case if legal counsel to the Holder or owner of beneficial interests requesting the removal of such Private Placement Legend delivers to the Trustee, any Registrar and Paying Agent (if a different Person than the Trustee) and the Company an opinion of counsel in compliance with this Indenture and additionally opining that the restrictive legend can be removed in connection with the transfer in accordance with the Securities Act.

Subordinated Notes will be executed on behalf of the Company by any Authorized Officer and may (but need not) have the Company’s corporate seal or a facsimile thereof reproduced

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thereon. The signature of an Authorized Officer on the Subordinated Notes may be manual or facsimile. Subordinated Notes bearing the manual or facsimile signatures of individuals who were at the time of execution Authorized Officers of the Company will, to the fullest extent permitted by law, bind the Company, notwithstanding that such individuals or any of them have ceased to hold such offices prior to the authentication and delivery of such Subordinated Notes or did not hold such offices at the date of such Subordinated Notes.

The Trustee or an Authenticating Agent will authenticate and deliver the Initial Notes for original issue in an initial aggregate principal amount of up to $75,000,000.00 upon one or more Company Orders and an Opinion of Counsel. In addition, the Trustee or an Authenticating Agent will upon receipt of a Company Order, Opinion of Counsel and Officers’ Certificate authenticate and deliver any Exchange Notes for an initial aggregate principal amount not to exceed $75,000,000.00 specified in such Company Order for Exchange Notes issued hereunder. The aggregate principal amount of Outstanding Subordinated Notes to be issued hereunder may be increased at any time hereafter and the series may be reopened for issuances of additional Subordinated Notes upon Company Order without the consent of any Holder. The Subordinated Notes issued on the date hereof and any such additional Subordinated Notes that may be issued hereafter shall be part of the same series of Subordinated Notes for all purposes under the Indenture. Unless the context otherwise requires, the initial Subordinated Notes and the Exchange Notes shall constitute one series for all purposes under the Indenture, including with respect to any amendment, waiver, acceleration or other Act of the Holders or upon redemption of the Subordinated Notes. The Subordinated Notes will be issued only in registered form without coupons and in minimum denominations of $1,000 and any integral multiple of $1,000 in excess thereof.

The Trustee will not be required to authenticate any Subordinated Notes if the issue of such Subordinated Notes under this Indenture will affect the Trustee’s own rights, duties or immunities under the Subordinated Notes and this Indenture or otherwise in a manner that is not reasonably acceptable to the Trustee or if the Trustee, being advised by counsel, determines that such action may not lawfully be taken.

No Subordinated Note will be entitled to any benefit under this Indenture or be valid or obligatory for any purpose, unless there appears on such Subordinated Note a certificate of authentication substantially in the form provided for herein executed by or on behalf of the Trustee or by the Authenticating Agent by the manual or electronic signature of one of its authorized signatories. Such certificate upon any Subordinated Note will be conclusive evidence, and the only evidence, that such Subordinated Note has been duly authenticated and delivered hereunder.

The Company will maintain an office or agency where Subordinated Notes may be presented for registration of transfer or for exchange (“Registrar”) and an office or agency where Subordinated Notes may be presented for payment (“Paying Agent”). The Registrar will keep a register of the Subordinated Notes (“Subordinated Note Register”) and of their transfer and exchange. The registered Holder of a Subordinated Note will be treated as the owner of the Subordinated Note for all purposes. The Company may appoint one or more co-registrars and one or more additional paying agents. The term “Registrar” includes any co-registrar and the term

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“Paying Agent” includes any additional paying agent. The Company may change any Paying Agent or Registrar without prior notice to any Holder; provided that no such removal or replacement will be effective until a successor Paying Agent or Registrar will have been appointed by the Company and will have accepted such appointment. The Company will notify the Trustee in writing of the name and address of any Registrar or Paying Agent not a party to this Indenture. If the Company fails to appoint or maintain another entity as Registrar or Paying Agent, the Trustee will act as such. The Company or any of its Subsidiaries may act as Paying Agent or Registrar.

The Company initially appoints the Trustee to act as the Paying Agent and Registrar for the Subordinated Notes and, in the event that any Subordinated Notes are issued in global form, to initially act as custodian with respect to the Global Subordinated Notes. In the event that the Trustee will not be or will cease to be Registrar with respect the Subordinated Notes, it will have the right to examine the Subordinated Note Register at all reasonable times. There will be only one Subordinated Note Register.

Except as otherwise provided in or under this Indenture, at the option of the Holder, Subordinated Notes may be exchanged for other Subordinated Notes containing identical terms and provisions, in any authorized denominations (minimum denominations of $1,000 and any integral multiple of $1,000 in excess thereof), and of a like aggregate principal amount, upon surrender of the Subordinated Notes to be exchanged at any office or agency for such purpose. Whenever any Subordinated Notes are so surrendered for exchange, the Company will execute, and the Trustee will authenticate and deliver, subject to the terms hereof, the Subordinated Notes that the Holder making the exchange is entitled to receive.

All Subordinated Notes issued upon any registration of transfer or exchange of Subordinated Notes will be the valid obligations of the Company evidencing the same debt and entitling the Holders thereof to the same benefits under this Indenture as the Subordinated Notes surrendered upon such registration of transfer or exchange.

Every Subordinated Note presented or surrendered for registration of transfer or for exchange or redemption will (if so required by the Company or the Registrar for such Subordinated Note) be duly endorsed, or be accompanied by a written instrument of transfer in form satisfactory to the Company and the Registrar for such Subordinated Note duly executed by the Holder thereof or his attorney duly authorized in writing.

No service charge will be made for any registration of transfer or exchange of Subordinated Notes, or any redemption or repayment of Subordinated Notes, or any conversion or exchange of Subordinated Notes for other types of securities or property, but the Company may require

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payment of a sum sufficient to pay all taxes, assessments or other governmental charges that may be imposed in connection with the transfer or exchange of the Subordinated Notes from the Holder requesting such transfer or exchange. The Registrar may require the Holder, among other things, to furnish appropriate endorsements and transfer documents.

Except as otherwise provided in or under this Indenture, the Company will not be required (i) to issue, register the transfer of or exchange any Subordinated Notes during a period beginning at the opening of business 15 days before the day of the selection for redemption of Subordinated Notes under Section 10.03 and ending at the close of business on the day of such selection, or (ii) to register the transfer of or exchange any Subordinated Note, or portion thereof, so selected for redemption, except in the case of any Subordinated Note to be redeemed in part, the portion thereof not to be redeemed.

Any Registrar (if not the Trustee) appointed in accordance with Section 2.06 hereof will provide to the Trustee such information as the Trustee may reasonably require in connection with the delivery by such Registrar of Subordinated Notes upon transfer or exchange of Subordinated Notes. No Registrar will be required to make registrations of transfer or exchange of Subordinated Notes during any periods designated in the Subordinated Notes or in this Indenture as periods during which such registration of transfers and exchanges need not be made.

The Trustee and the Registrar will have no obligation or duty to monitor, determine or inquire as to compliance with any restrictions on transfer imposed under this Indenture or under applicable law with respect to any transfer of any interest in any Subordinated Note (including any transfers between or among Depositary participants or beneficial owners of interests in any Global Subordinated Note) other than to require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required by the terms of, this Indenture, and to examine the same to determine substantial compliance as to form with the express requirements hereof.

Neither the Trustee nor any Paying Agent will have any responsibility for any actions taken or not taken by the Depositary.

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Any Global Subordinated Note exchanged in accordance with clause (i) or (ii) will be so exchanged in whole and not in part, and any Global Subordinated Note exchanged in accordance with clause (iii) above may be exchanged in whole or from time to time in part as directed by the Depositary.

Upon the occurrence of any of the preceding events in (i), (ii) or (iii), Definitive Subordinated Notes will be issued in fully registered form, without interest coupons, will have an aggregate Principal Amount equal to that of the Global Subordinated Note or portion thereof to be so exchanged, will be registered in such names and be in such authorized denominations as the Depositary will instruct the Trustee in writing and will bear such legends as provided herein. Global Subordinated Notes also may be exchanged or replaced, in whole or in part, as provided in Section 2.09 hereof. Every Subordinated Note authenticated and delivered in exchange for, or in lieu of, a Global Subordinated Note or any portion thereof, in accordance with this Section 2.07 or Section 2.09 hereof, will be authenticated and delivered in the form of, and will be, a Global Subordinated Note, except as otherwise provided herein. A Global Subordinated Note may not be exchanged for another Subordinated Note other than as provided in this Section 2.07(3); however, beneficial interests in a Global Subordinated Note may be transferred and exchanged as provided in Section 2.07(4) hereof.

Any Global Subordinated Note to be exchanged in whole will be surrendered by the Depositary to the Trustee. With regard to any Global Subordinated Note to be exchanged in part, either such Global Subordinated Note will be so surrendered for exchange or, if the Trustee is acting as custodian for the Depositary or its nominee with respect to such Global Subordinated Note, the principal amount thereof will be reduced, by an amount equal to the portion thereof to be so exchanged, by means of an appropriate adjustment made on the records of the Trustee. Upon any such surrender or adjustment, the Trustee will authenticate and deliver the Subordinated Note issuable on such exchange to or upon the order of the Depositary or an authorized representative thereof.

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Upon the occurrence of an Exchange Offer in accordance with the Registration Rights Agreement, the Company will issue and, upon receipt of a Company Order in accordance with Section 2.05 hereof, the Trustee will authenticate (i) Unrestricted Definitive Subordinated Notes in an aggregate principal amount equal to the principal amount of the Restricted Definitive Subordinated Notes tendered in such Exchange Offer for acceptance by Persons that certify in the applicable Letters of Transmittal that (x) they are not Participating Broker-Dealers, (y) they are not participating in a distribution of the applicable Exchange Notes and (z) they are not Affiliates of the Company, and accepted for exchange in such Exchange Offer, or if permitted by the Company, (ii) one or more Unrestricted Global Subordinated Notes in an aggregate principal amount equal to the aggregate principal amount of the beneficial interests in the Restricted Global Subordinated Notes tendered in such Exchange Offer for acceptance by Persons that certify in the applicable Letters of Transmittal that (x) they are not Participating Broker-Dealers, (y) they are not participating in a distribution of the applicable Exchange Notes and (z) they are not Affiliates of the Company, and accepted for exchange in such Exchange Offer. Concurrently with the issuance of such Unrestricted Global Subordinated Notes upon exchange of Restricted Global Subordinated Notes, the Trustee will cause the aggregate principal amount of the applicable Restricted Global Subordinated Notes to be reduced accordingly, and the Company will execute and the Trustee will authenticate and deliver to the Persons designated by the Holders of Restricted Definitive Subordinated Notes so accepted Unrestricted Definitive Subordinated Notes in the applicable principal amount. Any Subordinated Notes that remain outstanding after the consummation of such Exchange Offer, and Exchange Notes issued in connection with such Exchange Offer, will be treated as a single class of securities under this Indenture.

If any mutilated Subordinated Note is surrendered to the Trustee, subject to the provisions of this Section 2.09, the Company will execute and the Trustee will authenticate and deliver in exchange therefor a new Subordinated Note containing identical terms and of like principal amount and bearing a number not contemporaneously outstanding.

If there be delivered to the Company and to the Trustee (i) evidence to their satisfaction of the destruction, loss or theft of any Subordinated Note, and (ii) such security or indemnity as may be required by them to save each of them and any agent of either of them harmless, then, in the absence of notice to the Company or the Trustee that such Subordinated Note has been acquired by a bona fide purchaser, the Company will execute and, upon the Company’s request the Trustee will authenticate and deliver, in exchange for or in lieu of any such destroyed, lost or stolen Subordinated Note, a new Subordinated Note containing identical terms and of like principal amount and bearing a number not contemporaneously outstanding.

Notwithstanding the foregoing provisions of this Section 2.09, in case the outstanding principal balance of any mutilated, destroyed, lost or stolen Subordinated Note has become or is about to become due and payable, or is about to be redeemed by the Company pursuant to Article X hereof, the Company in its discretion may, instead of issuing a new Subordinated Note, pay or redeem such Subordinated Note, as the case may be, upon surrender of such Subordinated Note or

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delivery of evidence to the Company’s and Trustee’s satisfaction of the destruction, loss or theft of such Subordinated Note.

Upon the issuance of any new Subordinated Note under this Section, the Company may require the payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and any other expenses (including the fees and expenses of the Trustee) connected therewith.

Every new Subordinated Note issued in accordance with this Section in lieu of any destroyed, lost or stolen Subordinated Note will constitute a separate obligation of the Company, whether or not the destroyed, lost or stolen Subordinated Note will be at any time enforceable by anyone, and will be entitled to all the benefits of this Indenture equally and proportionately with any and all other Subordinated Notes duly issued hereunder.

The provisions of this Section, as amended or supplemented in accordance with this Indenture with respect to particular Subordinated Notes or generally, will (to the extent lawful) be exclusive and will preclude (to the extent lawful) all other rights and remedies with respect to the replacement or payment of mutilated, destroyed, lost or stolen Subordinated Notes.

Any interest on any Subordinated Note that will be payable, and punctually paid or duly provided for, on any Interest Payment Date will be paid to the Person in whose name such Subordinated Note is registered as of the close of business on the Regular Record Date for such Interest Payment Date.

Any interest on any Subordinated Note that will be payable, but will not be punctually paid or duly provided for, on any Interest Payment Date for such Subordinated Note (herein called “Defaulted Interest”) will cease to be payable to the Holder thereof on the relevant Regular Record Date by virtue of having been such Holder; and such Defaulted Interest may be paid by the Company, at its election in each case, as provided in clause (1) or (2) below:

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Unless otherwise provided in or under this Indenture or the Subordinated Notes, at the option of the Company, interest on Subordinated Notes that bear interest may be paid by mailing a check to the address of the Person entitled thereto as such address will appear in the Subordinated Note Register or by transfer to an account maintained by the payee with a bank located in the United States.

Subject to the foregoing provisions of this Section and Section 2.07, each Subordinated Note delivered under this Indenture upon registration of transfer of or in exchange for or in lieu of any other Subordinated Note will carry the rights to interest accrued and unpaid, and to accrue, which were carried by such other Subordinated Note.

Prior to due presentment of a Subordinated Note for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name such Subordinated Note is registered in the Subordinated Note Register as the owner of such Subordinated Note for the purpose of receiving payment of principal of, and (subject to Section 2.07 and Section 2.10) interest on, such Subordinated Note and for all other purposes whatsoever, whether or not any payment with respect to such Subordinated Note will be overdue, and neither the Company, the Trustee or any agent of the Company or the Trustee will be affected by notice to the contrary.

No holder of any beneficial interest in any Global Subordinated Note held on its behalf by a Depositary will have any rights under this Indenture with respect to such Global Subordinated Note, and such Depositary may be treated by the Company, the Trustee, and any agent of the Company or the Trustee as the owner of such Global Subordinated Note for all purposes whatsoever. None of the Company, the Trustee, any Paying Agent or the Registrar will have any responsibility or liability for any aspect of the records relating to or payments made on account of beneficial ownership interests of a Global Subordinated Note or for maintaining, supervising or reviewing any records relating to such beneficial ownership interests.

Notwithstanding the foregoing, nothing herein will prevent the Company, the Trustee, any Paying Agent or the Registrar from giving effect to any written certification, proxy or other

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authorization furnished by the applicable Depositary, as a Holder, with respect to a Global Subordinated Note or impair, as between such Depositary and the owners of beneficial interests in such Global Subordinated Note, the operation of customary practices governing the exercise of the rights of such Depositary (or its nominee) as the Holder of such Global Subordinated Note.

All Subordinated Notes surrendered for payment, redemption, registration of transfer or exchange will, if surrendered to any Person other than the Trustee, be delivered to the Trustee, and any such Subordinated Note, as well as Subordinated Notes surrendered directly to the Trustee for any such purpose, will be cancelled promptly by the Trustee. The Company may at any time deliver to the Trustee for cancellation any Subordinated Notes previously authenticated and delivered hereunder which the Company may have acquired in any manner whatsoever, and all Subordinated Notes so delivered will be cancelled promptly by the Trustee. No Subordinated Notes will be authenticated in lieu of or in exchange for any Subordinated Notes cancelled as provided in this Section, except as expressly permitted by or under this Indenture. All cancelled Subordinated Notes held by the Trustee will be disposed of in accordance with its procedure for the disposition of cancelled Subordinated Notes and applicable retention laws, and the Trustee upon the written request of the Company will deliver to the Company a certificate of such disposition, unless by a Company Order the Company shall direct that cancelled Subordinated Notes shall be returned to the Company.

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The Company may issue the Subordinated Notes with one or more “CUSIP” numbers (if then generally in use). The Company will promptly notify the Trustee in writing of any change in the CUSIP numbers. The Trustee may use “CUSIP” numbers in notices (including but not limited to notices of redemption or exchange) as a convenience to Holders; provided that any such notice may state that no representation is made as to the correctness of such numbers either as printed on

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the Subordinated Notes or as contained in any notice (including any notice of redemption or exchange) and that reliance may be placed only on the other identification numbers printed on the Subordinated Notes, and any such notice will not be affected by any defect in or omission of such numbers.

This Indenture will cease to be of further effect, and the Trustee, on receipt of a Company Order, at the expense of the Company, will execute proper instruments acknowledging satisfaction and discharge of this Indenture, when

Notwithstanding the satisfaction and discharge of this Indenture with respect to the Subordinated Notes, the obligations of the Company to the Trustee under Section 5.07 and, if money will have been deposited with the Trustee in accordance with Section 3.01(1)(b), the obligations of the Company and the Trustee with respect to the Subordinated Notes under Section 3.03 and Section 9.03 will survive.

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The Company will pay and indemnify the Trustee against any tax, fee or other charge, imposed on or assessed against the Government Obligations deposited in accordance with this Section 3.02 or the principal or interest received in respect thereof other than any such tax, fee or other charge which by law is for the account of the Holders of the Outstanding Subordinated Notes.

Subject to the provisions of the last paragraph of Section 9.03, all money and Government Obligations deposited with the Trustee in accordance with Section 3.01 or Section 3.02 will be held in trust and applied by the Trustee, in accordance with the provisions of such Subordinated Notes subject to discharge under Section 3.01 or Legal Defeasance or Covenant Defeasance under Section 3.02, and this Indenture, to the payment, either directly or through any Paying Agent (including the Company, to the extent it is acting as its own Paying Agent) as the Trustee may determine, to the Persons entitled thereto, of the principal and interest for whose payment such money has or Government Obligations have been deposited with or received by the Trustee; but such money and Government Obligations need not be segregated from other funds, except to the extent required by law.

If the Trustee (or other qualifying trustee appointed in accordance with Section 3.02(4)(a)) or any Paying Agent is unable to apply any moneys or Government Obligations deposited in

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accordance with Section 3.01(1) or Section 3.02(4)(a) to pay any principal of, or interest, if any, on, the Subordinated Notes by reason of any legal proceeding or any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, then the Company’s obligations under this Indenture and the Subordinated Notes will be revived and reinstated as though no such deposit had occurred, until such time as the Trustee (or other qualifying trustee) or Paying Agent is permitted to apply all such moneys and Government Obligations to pay the principal of, and interest, if any, on the Subordinated Notes as contemplated by Section 3.01 or Section 3.02 as the case may be; provided, however, that if the Company makes any payment of the principal of, or interest if any on, the Subordinated Notes following the reinstatement of its obligations as aforesaid, the Company will be subrogated to the rights of the Holders of such Subordinated Notes to receive such payment from the funds held by the Trustee (or other qualifying trustee) or Paying Agent.

The provisions of Article XI are expressly made subject to the provisions for, and to the right of the Company to effect, the satisfaction and discharge of all of the Subordinated Notes as set forth in and in accordance with Section 3.01 and the provisions for, and to the right of the Company to effect, Legal Defeasance and Covenant Defeasance of all of the Subordinated Notes as set forth in and in accordance with Section 3.02. As a result, and anything herein to the contrary notwithstanding, if the Company complies with the provisions of Section 3.01 to effect the satisfaction and discharge of the Subordinated Notes or complies with the provisions of Section 3.02 to effect the Legal Defeasance or Covenant Defeasance, upon the effectiveness of such satisfaction and discharge in accordance with Section 3.01 or of Legal Defeasance or Covenant Defeasance in accordance with Section 3.02, in the case of satisfaction and discharge in accordance with Section 3.01, or, in the case of Legal Defeasance or Covenant Defeasance in accordance with Section 3.02, the Subordinated Notes as to which Legal Defeasance or Covenant Defeasance, as the case may be, will have become effective will thereupon cease to be so subordinated in right of payment to the Senior Indebtedness and will no longer be subject to the provisions of Article XI and, without limitation to the foregoing, all moneys and Government Obligations deposited with the Trustee (or other qualifying trustee) in trust in connection with such satisfaction and discharge. Legal Defeasance or Covenant Defeasance, as the case may be, and all proceeds therefrom may be applied to pay the principal of, and interest, if any, on, such Subordinated Notes as and when the same will become due and payable notwithstanding the provisions of Article XI without regard to whether any or all of the Senior Indebtedness then outstanding will have been paid or otherwise provided for.

An “Event of Default” means any one of the following events (whatever the reason for such Event of Default and whether it will be voluntary or involuntary or be effected by operation of law or in accordance with any judgment, decree, or order of any court or any order, rule, or regulation of any administrative or governmental body):

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Upon becoming aware of any Event of Default, the Company will promptly deliver to the Trustee and Holders a written statement specifying the Event of Default.

If an Event of Default described in Section 4.01(1), 4.01(2) or 4.01(3) occurs, then the principal amount of all of the Outstanding Subordinated Notes, and accrued and unpaid interest, if any, on all Outstanding Subordinated Notes will become and be immediately due and payable without any declaration or other act on the part of the Trustee or any Holder, and the Company waives demand, presentment for payment, notice of nonpayment, notice of protest, and all other notices with respect to such Event of Default. Notwithstanding the foregoing, because the Company will treat the Subordinated Notes as Tier 2 Capital, upon the occurrence of an Event of Default other than an Event of Default described in Section 4.01(1), 4.01(2) or 4.01(3), neither the Trustee nor any Holder may accelerate the Stated Maturity of the Subordinated Notes and make the principal of, and any accrued and unpaid interest on, the Subordinated Notes, immediately due and payable.

If any Event of Default occurs and is continuing, the Trustee may also pursue any other available remedy to collect the payment of principal of, and interest on, the Subordinated Notes or to enforce the performance of any provision of the Subordinated Notes or this Indenture.

If an Event of Default described in Section 4.01(4), Section 4.01(5) or Section 4.01(6) occurs, the Company will, upon demand of the Trustee, pay to the Trustee, for the benefit of the Holders of such Subordinated Notes, the whole amount then due and payable with respect to such Subordinated Notes, with interest upon the overdue principal, any premium, and, to the extent permitted by applicable law, upon any overdue installments of interest at the rate or respective rates, as the case may be, provided for or with respect to such Subordinated Notes or, if no such rate or rates are so provided, at the rate or respective rates, as the case may be, of interest borne by such Subordinated Notes, and, in addition thereto, such further amount of money as will be sufficient to cover the costs and expenses of collection, including the reasonable compensation,

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expenses, disbursements and advances of the Trustee, its agents and counsel and all other amounts due to the Trustee under Section 5.07.

If the Company fails to pay the money it is required to pay the Trustee, the Trustee, in its own name and as trustee of an express trust, may institute a judicial proceeding for the collection of the sums so due and unpaid, may prosecute such proceeding to judgment or final decree, and may enforce the same against the Company or any other obligor upon such Subordinated Notes and collect the moneys adjudged or decreed to be payable in the manner provided by law out of the property of the Company, wherever situated.

The Trustee may proceed to protect and enforce its rights and the rights of the Holders of Subordinated Notes by such appropriate judicial proceedings to protect and enforce any such rights, whether for the specific enforcement of any covenant or agreement in this Indenture or in aid of the exercise of any power granted in this Indenture, or to enforce any other proper remedy.

Upon an Event of Default, until such Event of Default is cured by the Company or waived by the Holders in the manner provided in the Indenture, except as may be required by any federal or state bank regulatory agency, the Company may not declare or pay any dividends or distributions on, or redeem, purchase, acquire, or make a liquidation payment with respect to, any of the Company’s capital stock, make any payment of principal or interest or premium, if any, on or repay, repurchase or redeem any indebtedness of the Company that ranks equal with or junior to the Subordinated Notes, or make any payments under any guarantee that ranks equal with or junior to the Subordinated Notes, other than: (i) any dividends or distributions in shares of, or options, warrants or rights to subscribe for or purchase shares of, any class of the Company’s common stock; (ii) any declaration of a dividend in connection with the implementation of a shareholders’ rights plan, or the issuance of stock under any such plan in the future, or the redemption or repurchase of any such rights pursuant thereto; (iii) as a result of a reclassification of the Company’s capital stock or the exchange or conversion of one class or series of the Company’s capital stock for another class or series of the Company’s capital stock; (iv) the purchase of fractional interests in shares of the Company’s capital stock in accordance with the conversion or exchange provisions of such capital stock or the security being converted or exchanged; or (v) purchases of any class of the Company’s common stock related to the issuance of common stock or rights under any benefit plans for the Company’s directors, officers or employees or any of the Company’s dividend reinvestment plans.

In case of any judicial proceeding relative to the Company (or any other obligor upon the Subordinated Notes), its property or its creditors, the Trustee will be entitled and empowered, by intervention in such proceeding or otherwise, to take any and all actions authorized under the Trust Indenture Act in order to have claims of the Holders and the Trustee allowed in any such proceeding. In particular, the Trustee will be authorized to

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and any custodian, receiver, assignee, trustee, liquidator, sequestrator, or other similar official in any such judicial proceeding is authorized by each Holder to make such payments to the Trustee and, in the event that the Trustee will consent to the making of such payments directly to the Holders and to pay to the Trustee any amount due it for the reasonable compensation, expenses, disbursements, and advances of the Trustee, its agents and counsel, and any other amounts due hereunder.

No provision of this Indenture will be deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Holder any plan of reorganization, arrangement, adjustment, or composition affecting the Subordinated Notes or the rights of any Holder or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding; provided, however, the Trustee may vote on behalf of the Holders for the election of a trustee in bankruptcy or similar official and may be a member of a creditors, or other similar committee.

All rights of action and claims under this Indenture or the Subordinated Notes may be prosecuted and enforced by the Trustee without the possession of any of the Subordinated Notes or the production of such Subordinated Notes in any related proceeding, and any such proceeding instituted by the Trustee will be brought in its own name as trustee of an express trust, and any recovery of judgment will, after provision for the payment of the reasonable compensation, expenses, disbursements, and advances of the Trustee, its agents, and counsel, be for the ratable benefit of the Holders in respect of which such judgment has been recovered.

Any money collected by the Trustee in accordance with this Article IV or, after the occurrence and during the continuation of an Event of Default, any money or other property distributable in respect of the Company’s obligations under this Indenture will be applied in the following order, at the date or dates fixed by the Trustee and, in case of the distribution of such money on account of principal or any interest, upon presentation of the Subordinated Notes and the notation on such Subordinated Notes of the payment if only partially paid and upon surrender of such Subordinated Notes if fully paid:

FIRST: To the payment of all amounts due the Trustee, acting in any capacity hereunder, (including any predecessor trustee) under Section 5.07;

SECOND: To the payment of amounts then due and unpaid to the holders of Senior Indebtedness, to the extent required under the Subordination Provisions established with respect to the Subordinated Notes;

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THIRD: To the payment of the amounts then due and unpaid for principal of and any interest on the Subordinated Notes in respect of which or for the benefit of which such money has been collected, ratably, without preference or priority of any kind, according to the aggregate amounts due and payable on such Subordinated Notes for principal and interest, respectively; and

FOURTH: The balance, if any, to the Person or Persons entitled thereto.

No Holder of any Subordinated Note will have any right to institute any proceeding, judicial or otherwise, with respect to this Indenture or any Subordinated Notes, or for the appointment of a receiver or trustee, or for any other remedy under this Indenture, unless:

it being understood and intended that no one or more of such Holders will have any right in any manner whatever by virtue of, or by availing of, any provision of this Indenture to affect, disturb, or prejudice the rights of any other of such Holders, or to obtain or to seek to obtain priority or preference over any other of such Holders or to enforce any right under this Indenture, except in the manner provided in this Indenture and for the equal and ratable benefit of all of such Holders.

Notwithstanding any other provision in this Indenture, the Holder of any Subordinated Note will have the right, which is absolute and unconditional, to receive payment of the principal of and (subject to Section 2.07 and Section 2.10) any interest on such Subordinated Note on the respective Stated Maturity or Maturities expressed in such Subordinated Note (or, in the case of redemption, on the Redemption Date), and to institute suit for the enforcement of any such payment and such rights will not be impaired without the consent of such Holder.

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If the Trustee or any Holder has instituted any proceeding to enforce any right or remedy under this Indenture and such proceeding has been discontinued or abandoned for any reason, or has been determined adversely to the Trustee or to such Holder, then and in every such case, subject to any determination in such proceeding, the Company, the Trustee and the Holders will be restored severally and respectively to their former positions under this Indenture, and thereafter all rights and remedies of the Trustee and the Holders will continue as though no such proceeding had been instituted.

Except as otherwise provided with respect to the replacement or payment of mutilated, destroyed, lost, or stolen Subordinated Notes in the last paragraph of Section 2.09, no right or remedy conferred in this Indenture or the Subordinated Notes upon or reserved to the Trustee or to the Holders is intended to be exclusive of any other right or remedy, and every right and remedy will, to the extent permitted by law, be cumulative and in addition to every other right and remedy given under this Indenture or now or in the future existing at law or in equity or otherwise. The assertion or employment of any right or remedy under this Indenture, or otherwise, will not prevent the concurrent assertion or employment of any other appropriate right or remedy.

No delay or omission of the Trustee or of any Holder of any Subordinated Notes to exercise any right or remedy accruing upon any Event of Default will impair any such right or remedy or constitute a waiver of or acquiescence in any such Event of Default. Every right and remedy given by this Article or by law to the Trustee or to the Holders may be exercised from time to time, and as often as may be deemed expedient, by the Trustee or by the Holders, as the case may be.

The Holders of a majority in aggregate principal amount of the Outstanding Subordinated Notes will have the right to direct the time, method, and place of conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred on the Trustee, with respect to the Subordinated Notes, provided that

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The Holders of not less than a majority in aggregate principal amount of the Outstanding Subordinated Notes may on behalf of the Holders of all the Subordinated Notes waive any past default under this Indenture and its consequences, except a default in the payment of the principal of, or interest on, any Subordinated Note, or in respect of a covenant or provision of this Indenture which under Article VIII cannot be modified or amended without the consent of the Holder of each Outstanding Subordinated Note.

Upon any such waiver, such default will cease to exist, and any Event of Default arising from such default will be deemed to have been cured, for every purpose of this Indenture; but no such waiver will extend to any subsequent or other default or impair any consequent right.

All parties to this Indenture agree, and each Holder of any Subordinated Notes by his acceptance of such Subordinated Notes will be deemed to have agreed, that any court may in its discretion require, in any suit for the enforcement of any right or remedy under this Indenture, or in any suit against the Trustee for any action taken, suffered, or omitted by it as Trustee, the filing by any party litigant in such suit of an undertaking to pay the costs of such suit, and that such court may in its discretion assess reasonable costs, including reasonable attorney’s fees and expenses, against any party litigant in such suit, having due regard to the merits and good faith of the claims or defenses made by such party litigant; but the provisions of this Section 4.13 will not apply to any suit instituted by the Company, to any suit instituted by the Trustee, to any suit instituted by any Holder, or group of Holders, holding in the aggregate more than 10% in principal amount of the Outstanding Subordinated Notes, or to any suit instituted by any Holder for the enforcement of the payment of the principal of or interest, if any, on any Subordinated Notes on or after the Stated Maturity or Maturities expressed in such Subordinated Notes (or, in the case of redemption, on or after the Redemption Date).

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Subject to Section 315(a) through Section 315(d) of the Trust Indenture Act:

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(13) the Trustee shall not be required to give any bond or surety in respect of the performance of its powers and duties hereunder;

(14) the Trustee shall not be liable or responsible for any calculation in connection with the transactions contemplated hereunder nor for any information used in connection with such calculation;

(15) the Trustee shall not be bound to make any investigation into (i) the performance of or compliance with any of the covenants or agreements set forth herein, (ii) the occurrence of any default, or the validity, enforceability, effectiveness or genuineness of this Indenture or any other agreement, instrument or document;

(16) the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer of the Trustee, unless it is proved that the Trustee was negligent in ascertaining the pertinent facts; and

(17) the permissive right of the Trustee to take any action enumerated in this Indenture shall not be construed as a duty.

Within 90 days after a Responsible Officer of the Trustee is notified of the occurrence of any default hereunder with respect to the Subordinated Notes in accordance with Section 5.02(10), the Trustee will deliver to all Holders entitled to receive reports in accordance with Section 6.03(3), notice of such default hereunder known to the Trustee, unless such default will have been cured or waived; provided, however, that, except in the case of a default in the payment of the principal of or interest, if any, on, any Subordinated Note, the Trustee will be protected in withholding such notice if and so long as the Board of Directors or a Responsible Officer of the Trustee in good faith determines that the withholding of such notice is in the best interest of the Holders. For the purpose of this Section, the term “default” means any event that is, or after notice or lapse of time or both would become, an Event of Default with respect to Subordinated Notes.

The recitals contained herein and in the Subordinated Notes, except the Trustee’s certificate of authentication, will be taken as the statements of the Company and neither the Trustee nor any Authenticating Agent assumes any responsibility for their correctness. The Trustee makes no representations as to the validity or sufficiency of this Indenture or of the Subordinated Notes, except that the Trustee represents that it is duly authorized to execute and deliver this Indenture, authenticate the Subordinated Notes and perform its obligations hereunder and that the statements made by it in any Statement of Eligibility on Form T-1 supplied to the Company are true and accurate, subject to the qualifications set forth therein. Neither the Trustee nor any Authenticating Agent will be accountable for the use or application by the Company of the Subordinated Notes or the proceeds thereof. The Trustee will not be responsible for and makes no representation as to

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the validity or adequacy of this Indenture or the Subordinated Notes, it will not be accountable for the Company’s use of the proceeds from the Subordinated Notes or any money paid to the Company or upon the Company’s direction under any provision hereof, it will not be responsible for the use or application of any money received by any Paying Agent other than the Trustee, and it will not be responsible for any statement or recital herein or any statement in the Subordinated Notes or any other document in connection with the sale of the Subordinated Notes or under this Indenture other than its certificate of authentication.

The Trustee, any Authenticating Agent, any Paying Agent, any Registrar or any other Person that may be an agent of the Trustee or the Company, in its individual or any other capacity, may become the owner or pledgee of Subordinated Notes and, subject to Section 310(b) and Section 311 of the Trust Indenture Act, may otherwise deal with the Company with the same rights that it would have if it were not Trustee, Authenticating Agent, Paying Agent, Registrar or such other Person.

The Trustee is subject to Section 311(a) of the Trust Indenture Act, excluding any creditor relationship listed in Section 311(b) of the Trust Indenture Act. A Trustee who has resigned or been removed shall be subject to Section 311(a) of Trust Indenture Act to the extent indicated.

Except as provided in Section 3.02(5), Section 3.03 and Section 9.03, money held by the Trustee in trust hereunder need not be segregated from other funds except to the extent required by law. All moneys held by the Trustee hereunder will be held uninvested. The Trustee will be under no liability for interest on any money received by it hereunder except as otherwise agreed in writing with the Company.

The Company agrees:

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The obligations of the Company under this Section 5.07 will survive the satisfaction and discharge of this Indenture.

As security for the performance of the obligations of the Company under this Section, the Trustee will have a lien prior to the Subordinated Notes upon all property and funds held or collected by the Trustee as such, except funds held in trust for the payment of principal of, or interest on, Subordinated Notes. Such lien will survive the satisfaction and discharge hereof.

Any compensation or expense incurred by the Trustee after a default specified by Section 4.01 is intended to constitute an expense of administration under any then applicable bankruptcy or insolvency law. “Trustee” for purposes of this Section 5.07 will include any predecessor Trustee, but the negligence or bad faith of any Trustee will not affect the rights of any other Trustee under this Section 5.07. The provisions of this Section 5.07 will, to the extent permitted by law, survive any termination of this Indenture (including, without limitation, termination in accordance with any Bankruptcy Laws) and the resignation or removal of the Trustee.

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If at any time:

then, in any such case, (i) the Company, by or in accordance with a Board Resolution, may remove the Trustee with respect to the Subordinated Notes, or (ii) subject to Section 315(e) of the Trust Indenture Act, any Holder who has been a bona fide Holder for at least six months may, on behalf of himself and all others similarly situated, petition any court of competent jurisdiction for the removal of the Trustee with respect to all Subordinated Notes and the appointment of a successor Trustee or Trustees.

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Any corporation into which the Trustee may be merged or converted or with which it may be consolidated, or any corporation resulting from any merger, conversion or consolidation to which the Trustee will be a party, or any corporation succeeding to all or substantially all of the corporate trust business of the Trustee, will be the successor of the Trustee hereunder (provided that such corporation will otherwise be qualified and eligible under this Article), without the execution or filing of any paper or any further act on the part of any of the parties hereto. In case any Subordinated Notes will have been authenticated but not delivered by the Trustee then in office, any such successor to such authenticating Trustee may adopt such authentication and deliver the Subordinated Notes so authenticated with the same effect as if such successor Trustee had itself authenticated such Subordinated Notes. In case any Subordinated Notes will not have been authenticated by such predecessor Trustee, any such successor Trustee may authenticate and deliver such Subordinated Notes in its own name.

The Trustee may appoint one or more Authenticating Agents acceptable to the Company with respect to the Subordinated Notes which will be authorized to act on behalf of the Trustee to authenticate Subordinated Notes issued upon original issue, exchange, registration of transfer, partial redemption, partial repayment, or in accordance with Section 2.09, and Subordinated Notes so authenticated will be entitled to the benefits of this Indenture and will be valid and obligatory for all purposes as if authenticated by the Trustee hereunder. Wherever reference is made in this Indenture to the authentication and delivery of Subordinated Notes by the Trustee or the Trustee’s certificate of authentication, such reference will be deemed to include authentication and delivery

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on behalf of the Trustee by an Authenticating Agent and a certificate of authentication executed on behalf of the Trustee by an Authenticating Agent.

Each Authenticating Agent will be reasonably acceptable to the Company and, except as provided in or under this Indenture, will at all times be a corporation that would be permitted by the Trust Indenture Act to act as trustee under an indenture qualified under the Trust Indenture Act, is authorized under applicable law and by its charter to act as an Authenticating Agent and has a combined capital and surplus (computed in accordance with Section 310(a)(2) of the Trust Indenture Act) of at least $50,000,000 and is subject to supervision or examination by federal or state authority. If at any time an Authenticating Agent will cease to be eligible in accordance with the provisions of this Section, it will resign immediately in the manner and with the effect specified in this Section.

Any corporation into which an Authenticating Agent may be merged or converted or with which it may be consolidated, or any corporation resulting from any merger, conversion or consolidation to which such Authenticating Agent will be a party, or any corporation succeeding to all or substantially all of the corporate agency or corporate trust business of an Authenticating Agent, will be the successor of such Authenticating Agent hereunder, provided such corporation will be otherwise eligible under this Section, without the execution or filing of any paper or any further act on the part of the Trustee or the Authenticating Agent.

An Authenticating Agent may resign at any time by giving written notice thereof to the Trustee and the Company. The Trustee may at any time terminate the agency of an Authenticating Agent by giving written notice thereof to such Authenticating Agent and the Company. Upon receiving such a notice of resignation or upon such a termination, or in case at any time such Authenticating Agent will cease to be eligible in accordance with the provisions of this Section, the Trustee may appoint a successor Authenticating Agent that will be acceptable to the Company and will deliver written notice of such appointment by first-class mail, postage prepaid, to all Holders with respect to which such Authenticating Agent will serve, as their names and addresses appear in the Subordinated Note Register. Any successor Authenticating Agent, upon acceptance of its appointment hereunder, will become vested with all the rights, powers and duties of its predecessor hereunder, with like effect as if originally named as an Authenticating Agent. No successor Authenticating Agent will be appointed unless eligible under the provisions of this Section 5.12.

The Company agrees to pay each Authenticating Agent from time to time reasonable compensation for its services under this Section. If the Trustee makes such payments, it will be entitled to be reimbursed for such payments, subject to the provisions of Section 5.07.

The provisions of Section 2.11, Section 5.04 and Section 5.05 will be applicable to each Authenticating Agent.

If an Authenticating Agent is appointed under this Section, the Subordinated Notes may have endorsed thereon, in addition to or in lieu of the Trustee’s certificate of authentication, an alternate certificate of authentication in substantially the following form:

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This is one of the Subordinated Notes of the series designated therein referred to in the within-mentioned Indenture.

If and when the Trustee will be or become a creditor of the Company (or any other obligor upon the Subordinated Notes), the Trustee will be subject to the provisions of the Trust Indenture Act regarding the collection of claims against the Company (or any such other obligor).

The Trustee will preserve in as current a form as is reasonably practicable the most recent list available to it of the names and addresses of the Holders. If the Trustee is not the Registrar, the Company will cause to be furnished to the Trustee at least semiannually on January 1 and July 1 a listing of the Holders dated within 10 days of the date on which the list is furnished and at such other times as the Trustee may request in writing a list in such form and as of such date as the Trustee may reasonably require of the names and addresses of the Holders.

The Trustee will comply with the obligations imposed upon it in accordance with Section 312 of the Trust Indenture Act.

Every Holder of Subordinated Notes, by receiving and holding the same, agrees with the Company and the Trustee that neither the Company, the Trustee, any Paying Agent or any Registrar will be held accountable by reason of the disclosure of any such information as to the names and addresses of the Holders of Subordinated Notes in accordance with Section 312(c) of the Trust Indenture Act, regardless of the source from which such information was derived, and that the Trustee will not be held accountable by reason of delivering any material in accordance with a request made under Section 312(b) of the Trust Indenture Act.

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(2) The Company intends to file the reports referred to in Section 6.04(1) with the Commission in electronic form in accordance with Regulation S-T of the Commission using the Commission’s Electronic Data Gathering, Analysis and Retrieval system. Compliance with the foregoing, or any successor electronic system approved by the Commission, will constitute delivery by the Company of such reports to the Trustee and Holders in compliance with the provision of Section 6.04(1) and Trust Indenture Act Section 314(a). Notwithstanding anything to the contrary herein, the Trustee will have no duty to search for or obtain any electronic or other filings that the Company makes with the Commission, regardless of whether such filings are periodic, supplemental or otherwise. Delivery of the reports, information and documents to the Trustee in accordance with this Section 6.04(2) will be solely for the purposes of compliance with this Section 6.04(2) and with Trust Indenture Act Section 314(a). The Trustee’s receipt of such reports, information and documents (whether or not filed in electronic form) is for informational purposes only and the Trustee’s receipt of such will not constitute constructive notice of any information contained therein or determinable from information contained therein, including the Company’s compliance with any of its covenants hereunder (as to which the Trustee is entitled to rely exclusively on Officers’ Certificates). The Trustee shall have no liability or responsibility for the filing, content or timelines of any report hereunder aside from any report transmitted under Section 6.03 hereof.

The Company will not, in any transaction or series of related transactions, consolidate with or merge into any Person or sell, assign, transfer, lease or otherwise convey all or substantially all its properties and assets to any Person, unless:

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For purposes of the foregoing, any sale, assignment, transfer, lease or other conveyance of all or any of the properties and assets of one or more Subsidiaries of the Company (other than to the Company or another Subsidiary), which, if such properties and assets were directly owned by the Company, would constitute all or substantially all of the Company’s properties and assets, will be deemed to be the transfer of all or substantially all of the properties and assets of the Company.

Upon any consolidation by the Company with or merger of the Company into any other Person or any sale, assignment, transfer, lease or conveyance of all or substantially all of the properties and assets of the Company to any Person in accordance with Section 7.01, the successor Person formed by such consolidation or into which the Company is merged or to which such sale, assignment, transfer, lease or other conveyance is made will succeed to, and be substituted for, and may exercise every right and power of, the Company under this Indenture with the same effect as if such successor Person had been named as the Company herein; and thereafter, except in the case of a lease, the predecessor Person will be released from all obligations and covenants under this Indenture and the Subordinated Notes.

Without the consent of any Holders of Subordinated Notes, the Company (when authorized by or in accordance with a Board Resolution) and the Trustee, at any time and from time to time, may enter into one or more indentures supplemental hereto, in form satisfactory to the Trustee, for any of the following purposes:

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Without limitation of the foregoing, the Company and the Trustee may amend or supplement the Indenture or the Subordinated Notes without the consent of any Holder to implement any Three-Month Term SOFR Conventions or any benchmark transition provisions after a Benchmark Transition Event and its related Benchmark Replacement Date have occurred (or in anticipation thereof). The Trustee may conclusively rely on a Company Request (in addition to any other orders, certificates and opinions) as to whether a Benchmark Transition Event and Benchmark Replacement Date have occurred.

With the consent of the Holders of not less than a majority in principal amount of the Outstanding Subordinated Notes, by Act of said Holders delivered to the Company and the Trustee, the Company (when authorized by or in accordance with a Board Resolution), and the Trustee may enter into an indenture or indentures supplemental hereto for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of this Indenture or of the Subordinated Notes or of modifying in any manner the rights of the Holders under this Indenture; provided, that for the avoidance of doubt, Exchange Notes and Subordinated Notes shall vote and consent together on all matters (as to which such Exchange Notes and Subordinated Notes may vote or consent) as a single class and shall constitute a single series issued under this

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Indenture; provided, further that no such supplemental indenture, without the consent of the Holder of each Outstanding Subordinated Note affected thereby, will

It will not be necessary for any Act of Holders under this Section 8.02 to approve the particular form of any proposed supplemental indenture, but it will be sufficient if such Act will approve the substance thereof.

As a condition to executing, or accepting the additional trusts created by, any supplemental indenture permitted by this Article VIII or the modifications thereby of the trust created by this Indenture, the Trustee will be entitled to receive, and (subject to Section 5.01) will be fully protected in relying upon, an Officers’ Certificate and an Opinion of Counsel to the effect that the execution of such supplemental indenture is authorized or permitted by this Indenture and that such supplemental indenture has been duly authorized, executed and delivered by, and is a valid, binding and enforceable obligation of, the Company, subject to customary exceptions. The Trustee may, but will not be obligated to, enter into any such supplemental indenture which affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise.

Upon the execution of any supplemental indenture under this Article VIII, this Indenture will be modified in accordance therewith, and such supplemental indenture will form a part of this

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Indenture for all purposes; and every Holder theretofore or thereafter authenticated and delivered hereunder.

Subordinated Notes authenticated and delivered after the execution of any supplemental indenture in accordance with this Article VIII may, and will if required by the Company, bear a notation in form approved by the Company as to any matter provided for in such supplemental indenture. If the Company will so determine, new Subordinated Notes so modified as to conform, in the opinion of the Company, to any such supplemental indenture may be prepared and executed by the Company and authenticated and delivered by the Trustee in exchange for Outstanding Subordinated Notes.

No supplemental indenture will directly or indirectly modify or eliminate the Subordination Provisions or the definition of “Senior Indebtedness” applicable with respect to the Subordinated Notes in any manner that might terminate or impair the subordination of such Subordinated Notes to such Senior Indebtedness without the prior written consent of each of the holders of such Senior Indebtedness,

Every supplemental indenture executed in accordance with this Article will conform to the requirements of the Trust Indenture Act as then in effect.

The Company covenants and agrees for the benefit of the Holders that it will duly and punctually pay the principal of, and interest on, the Subordinated Notes, in accordance with the terms thereof and this Indenture. Principal and interest will be considered paid on the date due if the Paying Agent, if other than the Company or a Subsidiary thereof, holds as of 11:00 a.m., Eastern Time, on any Interest Payment Date, an amount in immediately available funds provided by the Company that is designated for and sufficient to pay all principal and interest then due. The Company will pay all Additional Interest, if any, on the dates and in the amounts set forth in the Registration Rights Agreement.

If Additional Interest is payable by the Company in accordance with the Registration Rights Agreement and paragraph 2 of the Subordinated Notes, the Company will deliver to the Trustee a certificate to that effect stating (i) the amount of such Additional Interest that is payable and (ii) the date on which such Additional Interest is payable. Unless and until a Responsible Officer of the Trustee receives such a certificate or instruction or direction from the Holders in accordance with the terms of this Indenture, the Trustee may assume without inquiry that no Additional Interest is payable. The foregoing will not prejudice the rights of the Holders with respect to their entitlement to Additional Interest as otherwise set forth in this Indenture or the

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Subordinated Notes and pursuing any action against the Company directly or otherwise directing the Trustee to take such action in accordance with the terms of this Indenture and the Subordinated Notes. If the Company has paid Additional Interest directly to persons entitled to it, the Company will deliver to the Trustee a certificate setting forth the particulars of such payment.

The Company will maintain an office or agency in the Borough of Manhattan, New York, New York or Chicago, Illinois (which may be an office of the Trustee or an Affiliate of the Trustee or Registrar) where Subordinated Notes may be surrendered for registration of transfer or for exchange and where notices and demands to or upon the Company in respect of the Subordinated Notes and this Indenture may be served. The Company will give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency. If at any time the Company fails to maintain any such required office or agency or fails to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office of the Trustee.

The Company may also from time to time designate one or more other offices or agencies where the Subordinated Notes may be presented or surrendered for any or all such purposes and may from time to time rescind such designations; provided that no such designation or rescission will in any manner relieve the Company of its obligation to maintain an office or agency in the Borough of Manhattan, New York, New York or Chicago, Illinois. The Company will give prompt written notice to the Trustee of any such designation or rescission and of any change in the location of any such other office or agency.

The Company hereby designates the Corporate Trust Office of the Trustee provided in Section 1.05 as one such office or agency of the Company in accordance with Section 9.02; provided, that no service of legal process on the Company may be made at any office of the Trustee.

If the Company will at any time act as its own Paying Agent, it will, on or before each due date of the principal of, or interest on, any of the Subordinated Notes, segregate and hold in trust for the benefit of the Persons entitled thereto a sum in Dollars sufficient to pay the principal and interest, as the case may be, so becoming due until such sums will be paid to such Persons or otherwise disposed of as herein provided, and will promptly notify the Trustee of its action or failure so to act.

Whenever the Company will have one or more Paying Agents, it will, on or prior to each due date of the principal of, or interest on, any Subordinated Notes, deposit with any Paying Agent a sum in Dollars sufficient to pay the principal and interest, as the case may be, so becoming due, such sum to be held in trust for the benefit of the Persons entitled thereto, and (unless such Paying Agent is the Trustee) the Company will promptly notify the Trustee of its action or failure so to act.

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The Company will cause each Paying Agent other than the Trustee to execute and deliver to the Trustee an instrument in which such Paying Agent will agree with the Trustee, subject to the provisions of this Section that such Paying Agent will:

The Company may at any time, for the purpose of obtaining the satisfaction and discharge of this Indenture or for any other purpose, pay, or by Company Order direct any Paying Agent to pay, to the Trustee all sums held in trust by the Company or such Paying Agent, such sums to be held by the Trustee upon the same terms as those upon which such sums were held by the Company or such Paying Agent; and, upon such payment by any Paying Agent to the Trustee, such Paying Agent will be released from all further liability with respect to such sums.

Any money deposited with the Trustee or any Paying Agent, or then held by the Company, in trust for the payment of the principal of, or interest on, any Subordinated Note and remaining unclaimed for two years after such principal or interest will have become due and payable will be paid to the Company upon a Company Request, or (if then held by the Company) will be discharged from such trust; and the Holder of such Subordinated Note will thereafter, as an unsecured general creditor, look only to the Company for payment thereof, and all liability of the Trustee or such Paying Agent with respect to such trust money, and all liability of the Company as trustee thereof, will thereupon cease.

Subject to Article VII, the Company will do or cause to be done all things necessary to preserve and keep in full force and effect (i) the corporate existence of the Company, (ii) the existence (corporate or other) of each Significant Subsidiary and (iii) the rights (charter and statutory), licenses and franchises of the Company and each of its Significant Subsidiaries; provided, however, that the Company will not be required to preserve the existence (corporate or other) of any of its Significant Subsidiaries or any such right, license or franchise of the Company or any of its Significant Subsidiaries if the Board of Directors of the Company determines that the preservation thereof is no longer desirable in the conduct of the business of the Company and its Significant Subsidiaries taken as a whole and that the loss thereof will not be disadvantageous in any material respect to the Holders.

The Company will, and will cause each Significant Subsidiary to, cause all its properties used or useful in the conduct of its business to be maintained and kept in good condition, repair and working order and supplied with all necessary equipment and will cause to be made all

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necessary repairs, renewals, replacements, betterments and improvements thereof, all as in the judgment of the Company may be necessary so that the business carried on in connection therewith may be properly and advantageously conducted at all times; provided, however, that nothing in this Section will prevent the Company or any Significant Subsidiary from discontinuing the operation and maintenance of any of their respective properties if such discontinuance is, in the judgment of the Board of Directors of the Company or of any Significant Subsidiary, as the case may be desirable in the conduct of its business.

The Company may omit in any particular instance to comply with any term, provision or condition set forth in Section 9.02 to Section 9.05, inclusive, with respect to the Subordinated Notes if before the time for such compliance the Holders of at least a majority in principal amount of the Outstanding Subordinated Notes, by Act of such Holders, either will waive such compliance in such instance or generally will have waived compliance with such term, provision or condition, but no such waiver will extend to or affect such term, provision or condition except to the extent so expressly waived, and, until such waiver will become effective, the obligations of the Company and the duties of the Trustee in respect of any such term, provision or condition will remain in full force and effect.

The Company shall not declare or pay any dividend, or make any distribution on capital stock or other equity securities of any kind of the Company, in each case except: (i) in such amounts as permitted by applicable regulations and only upon receipt of any required regulatory approval; or (ii) for dividends payable solely in shares of common stock of the Company.

The Company will deliver to the Trustee, within 120 days after the end of each fiscal year, an Officers’ Certificate covering the preceding calendar year, stating whether or not, to the best of his or her knowledge, the Company is in default in the performance and observance of any of the terms, provisions and conditions of this Indenture (without regard to notice requirements or periods of grace) and if the Company will be in default, specifying all such defaults and the nature and status thereof of which he or she may have knowledge.

Whether or not the Company is subject to consolidated capital requirements under applicable regulations of the Federal Reserve, if all or any portion of the Subordinated Notes ceases to be deemed to be Tier 2 Capital, other than due to the limitation imposed on the capital treatment of subordinated debt during the 5 years immediately preceding the Stated Maturity of the Subordinated Notes, the Company will immediately notify the Trustee and the Holders thereof, and thereafter the Company and the Holders will work together in good faith, subject to the terms of this Indenture, to execute and deliver all agreements as reasonably necessary in order to restructure the applicable portions of the obligations evidenced by the Subordinated Notes to qualify as Tier 2 Capital, and the Company shall request, subject to the terms of this Indenture, that the Trustee execute and deliver all such agreements as may be reasonably necessary in order

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to effect any restructuring agreed to by the Company and the Holders; provided, however, that nothing contained in this Section 9.09 shall limit the Company’s right to redeem the Subordinated Notes upon the occurrence of a Tier 2 Capital Event pursuant to Section 10.01 hereof.

The election of the Company to redeem any Subordinated Notes will be evidenced by a Company Order. In case of any redemption of less than all of the Subordinated Notes, the Company will, at least 60 days prior to the Redemption Date fixed by the Company (unless a shorter notice will be satisfactory to the Trustee, but in any event not less than 45 days prior to the Redemption Date), notify the Trustee, of such Redemption Date and of the principal amount of Subordinated Notes to be redeemed.

In the case of any redemption of Subordinated Notes (i) prior to the expiration of any restriction on such redemption provided in the terms of such Subordinated Notes or elsewhere in this Indenture or (ii) in accordance with an election of the Company that is subject to a condition specified in the terms of such Subordinated Notes or elsewhere in this Indenture, the Company will furnish to the Trustee an Officers’ Certificate evidencing compliance with such restriction or condition.

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If less than all of the Subordinated Notes are to be redeemed, the particular Subordinated Notes to be redeemed will be selected not more than 45 days prior to the Redemption Date by the Trustee from the Outstanding Subordinated Notes not previously called for redemption unless otherwise required by law or applicable depositary requirements, on a pro rata basisas to the Holders and which may provide for the selection for redemption of portions of the principal amount of Subordinated Notes; provided, however, that no such partial redemption will reduce the portion of the principal amount of a Subordinated Note not redeemed to less than the minimum denomination for a Subordinated Note established in or under this Indenture. Any partial redemption will be made pro rata among all of the Holders of Global Subordinated Notes (such redemption to be considered a “Pro Rata Pass-Through of Principal” for purpose of a redemption processed through DTC in accordance with its rules and procedures). In the event a pro rata redemption is not permitted under applicable law or applicable depositary requirements, the Subordinated Notes to be redeemed will be selected by lot.

The Trustee will promptly notify the Company and the Registrar (if other than itself) in writing of the Subordinated Notes selected for redemption and, in the case of any Subordinated Notes selected for partial redemption, the principal amount thereof to be redeemed.

For all purposes of this Indenture, unless the context otherwise requires, all provisions relating to the redemption of Subordinated Notes will relate, in the case of any Subordinated Notes redeemed or to be redeemed only in part, to the portion of the principal of such Subordinated Notes which has been or is to be redeemed.

Notice of redemption will be given in the manner provided in Section 1.05, not less than 10 nor more than 60 days prior to the Redemption Date to the Holders of Subordinated Notes to be redeemed. Failure to give notice by delivering in the manner herein provided to the Holder of any Subordinated Notes designated for redemption as a whole or in part, or any defect in the notice to any such Holder, will not affect the validity of the proceedings for the redemption of any other Subordinated Notes or portions thereof.

Any notice of redemption provided to the Holder of any Subordinated Notes may be conditional in the Company’s discretion, and the Company may delay the Redemption Date until such time as any or all of such conditions have been satisfied or revoked by the Company if it determines that such conditions will not be satisfied. The Company will provide written notice to the Trustee prior to the close of business two Business Days prior to the Redemption Date (or such shorter period as may be acceptable to the Trustee) if any such redemption has been rescinded or delayed, and upon receipt the Trustee will provide such notice to each Holder of the Subordinated Notes in the same manner in which the notice of redemption was given.

Any notice that is delivered to the Holder of any Subordinated Notes in the manner herein provided will be conclusively presumed to have been duly given, whether or not such Holder receives the notice.

All notices of redemption will state:

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The notice of redemption shall include the CUSIP number reference numbers of such Subordinated Notes, if any (or any other numbers used by a Depositary to identify such Subordinated Notes).

Notice of redemption of Subordinated Notes to be redeemed at the election of the Company will be given by the Company or, at the Company’s request delivered at least five days before the date such notice is to be given (unless a shorter period will be acceptable to the Trustee) together with the form of notice to be delivered, by the Trustee in the name and at the expense of the Company.

On or prior to 11:00 am, Eastern time, on any Redemption Date, the Company will deposit, with respect to the Subordinated Notes called for redemption in accordance with Section 10.04, with the Trustee or with a Paying Agent (or, if the Company is acting as its own Paying Agent, segregate and hold in trust as provided in Section 9.03) an amount sufficient to pay the Redemption

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Price of, and (except if the Redemption Date will be an Interest Payment Date) any accrued interest on, all such Subordinated Notes or portions thereof which are to be redeemed on that date.

Notice of redemption having been given as provided above, the Subordinated Notes so to be redeemed will, subject to satisfaction of any condition to such redemption, on the Redemption Date, become due and payable at the Redemption Price therein specified, together with accrued and unpaid interest and Additional Interest, if any, thereon and from and after such date (unless the Company will default in the payment of the Redemption Price and accrued interest, if any) such Subordinated Notes will cease to bear interest. Upon surrender of any such Subordinated Note for redemption in accordance with said notice, such Subordinated Note will be paid by the Company at the Redemption Price, together with any accrued and unpaid interest and Additional Interest, if any, thereon to but excluding the Redemption Date; provided, however, that installments of interest on Subordinated Notes whose Stated Maturity is on or prior to the Redemption Date will be payable to the Holders of such Subordinated Notes registered as such at the close of business on the Regular Record Dates therefor according to their terms and the provisions of Section 2.10.

If any Subordinated Note called for redemption will not be so paid upon surrender thereof for redemption, the principal, until paid, will bear interest from the Redemption Date at the rate prescribed therefor in the Subordinated Note or, if no rate is prescribed therefor in the Subordinated Note, at the rate of interest, if any, borne by such Subordinated Note.

If notice of redemption has been duly given and notwithstanding that any Subordinated Notes so called for redemption have not been surrendered for cancellation, on and after the Redemption Date interest shall cease to accrue on all Subordinated Notes so called for redemption, all Subordinated Notes so called for redemption shall no longer be deemed outstanding and all rights with respect to such Subordinated Notes shall forthwith on such Redemption Date cease and terminate (unless the Company shall default in the payment of the redemption price), except only the right of the Holder thereof to receive the amount payable on such redemption, without interest.

Any Subordinated Note which is to be redeemed only in part will be surrendered at any office or agency for such Subordinated Note (with, if the Company or the Trustee so requires, due endorsement by, or a written instrument of transfer in form satisfactory to the Company and the Trustee duly executed by, the Holder thereof or his attorney duly authorized in writing) and the Company will execute and the Trustee will authenticate and deliver to the Holder of such Subordinated Note without service charge, a new Subordinated Note or Subordinated Notes, containing identical terms and provisions, of any authorized denomination as requested by such Holder in aggregate principal amount equal to and in exchange for the unredeemed portion of the principal of the Subordinated Note so surrendered. If a Global Subordinated Note is so surrendered, the Company will execute, and the Trustee will authenticate and deliver to the Depositary for such Global Subordinated Note as will be specified in the Company Order with respect thereto to the Trustee, without service charge, a new Global Subordinated Note in a

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denomination equal to and in exchange for the unredeemed portion of the principal of the Global Subordinated Note so surrendered.

Upon surrender of a Subordinated Note that is redeemed in part, the Company will issue and the Trustee will authenticate for the Holder at the expense of the Company a new Subordinated Note equal in principal amount to the unredeemed portion of the Subordinated Note surrendered representing the same indebtedness to the extent not redeemed. Notwithstanding anything in this Indenture to the contrary, only a Company Order and not an Opinion of Counsel or an Officers’ Certificate of the Company is required for the Trustee to authenticate such new Subordinated Note.

The Company, for itself, its successors and assigns, covenants and agrees, and each Holder of Subordinated Notes by the Holder’s acceptance thereof, likewise covenants and agrees, that the payment of the principal of and interest on each and all of the Subordinated Notes is and will be expressly subordinated in right of payment to the prior payment in full of all Senior Indebtedness.

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With respect to the holders of Senior Indebtedness, the Trustee undertakes to perform or to observe only such of its covenants and obligations as are specifically set forth in this Indenture, and no implied covenants or obligations with respect to the holders of Senior Indebtedness will be read into this Indenture against the Trustee. The Trustee, however, will not be deemed to owe any fiduciary duty to the holders of Senior Indebtedness by reason of the execution of this Indenture, or any other supplemental indenture entered into in accordance with Article VIII of this Indenture, and will not be liable to any such holders if it will in good faith mistakenly pay over or distribute to or on behalf of the Holders or the Company moneys or assets to which any holders of Senior Indebtedness will be entitled by virtue of this Article XI or otherwise.

In the event and during the continuation of any default in the payment of principal of, or premium, if any, or interest on, any Senior Indebtedness, beyond any applicable grace period, or if any event of default with respect to any Senior Indebtedness will have occurred and be continuing, or would occur as a result of the payment referred to hereinafter, permitting the holders of such Senior Indebtedness (or a trustee on behalf of the holders thereof) to accelerate the maturity thereof, then, unless and until such default or event of default will have been cured or waived or will have ceased to exist, no payment of principal of or interest on the Subordinated Notes, or in respect of any retirement, purchase or other acquisition of any of the Subordinated Notes, will be made by the Company.

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Nothing contained in this Indenture, any other supplemental indenture entered into in accordance with Article VIII of this Indenture, or in any of the Subordinated Notes will: (i) impair, as between the Company and the Holders, the obligations of the Company to make, or prevent the Company from making, at any time except as provided in Section 11.02 and Section 11.03, payments of principal of, or interest (including interest accruing subsequent to the commencement of any proceeding for the bankruptcy or reorganization of the Company under any applicable bankruptcy, insolvency, or similar law now or hereafter in effect) on, the Subordinated Notes, as and when the same will become due and payable in accordance with the terms of the Subordinated Notes; (ii) affect the relative rights of the Holders and creditors of the Company other than the holders of the Senior Indebtedness; (iii) except as otherwise expressly provided in this Indenture and the Subordinated Notes with respect to the limitation on the rights of the Trustee and the Holders, to accelerate the maturity of the Subordinated Notes and pursue remedies upon such an acceleration, prevent the Holder of any Subordinated Notes or the Trustee from exercising all remedies otherwise permitted by applicable law upon default thereunder, subject to the rights, if any, under this Article XI of the holders of Senior Indebtedness in respect of cash, property or securities of the Company received upon the exercise of such remedy; or (iv) prevent the application by the Trustee or any Paying Agent of any moneys deposited with it hereunder to the payment of or on account of the principal of, or interest on, the Subordinated Notes or prevent the receipt by the Trustee or any Paying Agent of such moneys, if, prior to the third Business Day prior to such deposit, the Trustee or such Paying Agent did not have written notice of any event prohibiting the making of such deposit by the Company.

Each Holder by his acceptance of any Subordinated Notes authorizes and expressly directs the Trustee on such Holder’s behalf to take such action as may be necessary or appropriate to effectuate the Subordination Provisions, and appoints the Trustee such Holder’s attorney-in-fact for such purposes, including, in the event of any termination, winding up, liquidation or reorganization of the Company (whether in bankruptcy, insolvency, receivership, reorganization or similar proceedings or upon an assignment for the benefit of creditors by the Company, a marshalling of the assets and liabilities of the Company or otherwise) tending toward the liquidation of the property and assets of the Company, the filing of a claim for the unpaid balance of the Subordinated Notes in the form required in those proceedings.

The Company will give prompt written notice to the Trustee of any fact known to the Company that would prohibit the Company from making any payment to or by the Trustee in respect of the Subordinated Notes in accordance with the provisions of this Article XI. The Trustee will not be charged with the knowledge of the existence of any default or event of default with respect to any Senior Indebtedness or of any other facts that would prohibit the making of any payment to or by the Trustee or any Paying Agent unless and until the Trustee will have received notice in writing at its Corporate Trust Office to that effect signed by an Authorized Officer, or by a holder of Senior Indebtedness or a trustee or agent thereof; and prior to the receipt of any such written notice, the Trustee will, subject to Article V of this Indenture, be entitled to assume that

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no such facts exist; provided that, if the Trustee will not have received the notice provided for in this Section 11.06 at least two Business Days prior to the date upon which, by the terms of this Indenture, any monies will become payable for any purpose (including, without limitation, the payment of the principal of or interest on any Subordinated Note), then, notwithstanding anything herein to the contrary, the Trustee will have full power and authority to receive any monies from the Company and to apply the same to the purpose for which they were received, and will not be affected by any notice to the contrary that may be received by it on or after such prior date except for an acceleration of the Subordinated Notes prior to such application. The foregoing will not apply if the Paying Agent is the Company. The Trustee will be entitled to rely on the delivery to it of a written notice by a Person representing himself or itself to be a holder of any Senior Indebtedness (or a trustee on behalf of, or agent of, such holder) to establish that such notice has been given by a holder of such Senior Indebtedness or a trustee or agent on behalf of any such holder.

In the event that the Trustee determines in good faith that any evidence is required with respect to the right of any Person as a holder of Senior Indebtedness to participate in any payment or distribution in accordance with this Article XI, the Trustee may request such Person to furnish evidence to the reasonable satisfaction of the Trustee as to the amount of Senior Indebtedness held by such Person, the extent to which such Person is entitled to participate in such payment or distribution and any other facts pertinent to the rights of such Person under this Article XI and, if such evidence is not furnished to the Trustee, the Trustee may defer any payment to such Person pending such evidence being furnished to the Trustee or a judicial determination that such Person has the right to receive such payment.

Notwithstanding the provisions of this Article XI or any other provisions of this Indenture or any other supplemental indenture issued in accordance with Article VIII of this Indenture, neither the Trustee nor any Paying Agent will be charged with knowledge of the existence of any Senior Indebtedness or of any event that would prohibit the making of any payment of moneys to or by the Trustee or such Paying Agent, unless and until a Responsible Officer of the Trustee or such Paying Agent will have received written notice thereof from the Company or from the holder of any Senior Indebtedness or from the representative of any such holder.

The Trustee will be entitled to all of the rights set forth in this Article XI in respect of any Senior Indebtedness at any time held by it in its individual capacity to the same extent as any other holder of such Senior Indebtedness, and nothing in this Indenture or any other supplemental indenture issued in accordance with Article VIII of this Indenture will be construed to deprive the Trustee of any of its rights as such holder.

Nothing contained in this Article XI will apply to the claims of, or payments to, the Trustee under Section 5.07 of this Indenture.

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The Trustee hereby accepts the trusts in this Indenture upon the terms and conditions set forth herein.

[Signature Page Follows]

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IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be duly signed as of the date first written above.

[Signature Page to Indenture]

[Signature Page to Indenture]

EXHIBIT A-l

FORM OF DEFINITIVE SUBORDINATED NOTE

BYLINE BANCORP, INC.

6.875% FIXED-TO-FLOATING RATE Subordinated Note due 2035

[THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY APPLICABLE STATE SECURITIES LAWS OR ANY OTHER APPLICABLE SECURITIES LAW AND MAY NOT BE TRANSFERRED, SOLD OR OTHERWISE DISPOSED OF EXCEPT (A) PURSUANT TO, AND IN ACCORDANCE WITH, A REGISTRATION STATEMENT THAT IS EFFECTIVE UNDER THE SECURITIES ACT AT THE TIME OF SUCH TRANSFER; (B) TO A PERSON THAT YOU REASONABLY BELIEVE TO BE A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT OR TO A PERSON THAT YOU REASONABLY BELIEVE TO BE AN INSTITUTIONAL ACCREDITED INVESTOR AS DEFINED IN RULE 501(A)(1), (2), (3) OR (7) OF REGULATION D UNDER THE SECURITIES ACT; OR (C) UNDER ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT (INCLUDING, IF AVAILABLE, THE EXEMPTION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT), AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS OR BLUE SKY LAWS, AS EVIDENCED BY A LEGAL OPINION OF COUNSEL IN FORM AND SUBSTANCE REASONABLY SATISFACTORY TO THE COMPANY TO THE EFFECT THAT REGISTRATION IS NOT REQUIRED.]

THIS SECURITY AND THE OBLIGATIONS OF THE COMPANY (AS DEFINED HEREIN) AS EVIDENCED HEREBY (1) ARE NOT DEPOSITS WITH OR HELD BY THE COMPANY AND ARE NOT INSURED OR GUARANTEED BY ANY FEDERAL AGENCY OR INSTRUMENTALITY, INCLUDING, WITHOUT LIMITATION, THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY OTHER GOVERNMENT AGENCY OR FUND AND (2) ARE SUBORDINATE IN THE RIGHT OF PAYMENT TO ALL SENIOR INDEBTEDNESS (AS DEFINED IN THE INDENTURE IDENTIFIED HEREIN).

CERTAIN ERISA CONSIDERATIONS:

THE HOLDER OF THIS SUBORDINATED NOTE, OR ANY INTEREST HEREIN, BY ITS ACCEPTANCE HEREOF OR THEREOF AGREES, REPRESENTS AND WARRANTS THAT IT IS NOT AN EMPLOYEE BENEFIT PLAN, INDIVIDUAL RETIREMENT ACCOUNT OR OTHER PLAN OR ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (“ERISA”), OR SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE “CODE”) (EACH A “PLAN”), OR AN ENTITY WHOSE UNDERLYING ASSETS INCLUDE “PLAN ASSETS” BY REASON OF ANY PLAN’S INVESTMENT IN THE ENTITY, AND NO PERSON INVESTING “PLAN ASSETS” OF ANY PLAN MAY ACQUIRE OR HOLD THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN, UNLESS SUCH PURCHASER OR HOLDER IS ELIGIBLE FOR THE EXEMPTIVE RELIEF AVAILABLE UNDER U.S.

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DEPARTMENT OF LABOR PROHIBITED TRANSACTION CLASS EXEMPTION 96-23, 95-60, 91-38, 90-1 OR 84-14 OR ANOTHER APPLICABLE EXEMPTION OR ITS PURCHASE AND HOLDING OF THIS SUBORDINATED NOTE, OR ANY INTEREST HEREIN, ARE NOT PROHIBITED BY SECTION 406 OF ERISA OR SECTION 4975 OF THE CODE WITH RESPECT TO SUCH PURCHASE AND HOLDING. ANY PURCHASER OR HOLDER OF THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN WILL BE DEEMED TO HAVE REPRESENTED BY ITS PURCHASE AND HOLDING THEREOF THAT EITHER (i) IT IS NOT AN EMPLOYEE BENEFIT PLAN OR OTHER PLAN TO WHICH TITLE I OF ERISA OR SECTION 4975 OF THE CODE IS APPLICABLE, A TRUSTEE OR OTHER PERSON ACTING ON BEHALF OF ANY SUCH EMPLOYEE BENEFIT PLAN OR PLANS, OR ANY OTHER PERSON OR ENTITY USING THE “PLAN ASSETS” OF ANY SUCH EMPLOYEE BENEFIT PLAN OR PLAN TO FINANCE SUCH PURCHASE, OR (ii) SUCH PURCHASE OR HOLDING WILL NOT RESULT IN A PROHIBITED TRANSACTION UNDER SECTION 406 OF ERISA OR SECTION 4975 OF THE CODE FOR WHICH FULL EXEMPTIVE RELIEF IS NOT AVAILABLE UNDER APPLICABLE STATUTORY OR ADMINISTRATIVE EXEMPTION.

ANY FIDUCIARY OF ANY PLAN WHO IS CONSIDERING THE ACQUISITION OF THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN SHOULD CONSULT WITH HIS OR HER LEGAL COUNSEL PRIOR TO ACQUIRING THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN.

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No. 20[●]-[●] AI CUSIP / ISIN: [●] / US[●]

QIB CUSIP / ISIN: [●] / [●]

BYLINE BANCORP, INC.

6.875% FIXED-TO-FLOATING RATE Subordinated Note due 2035

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The Company will pay interest on this Subordinated Note to the Person who is the registered Holder at the close of business on the fifteenth day (whether or not a Business Day) prior to the applicable Interest Payment Date, except as provided in Section 2.10 of the Indenture with respect to Defaulted Interest. This Subordinated Note will be payable as to principal and interest at the office or agency of the Paying Agent, or, at the option of the Company, payment of interest may be made by check delivered to the Holder at its address set forth in the Subordinated Note Register or by transfer to an account maintained with a bank located in the United States appropriately designated by the Person entitled to payment; provided, that the Paying Agent will have received written notice of such account designation at least five Business Days prior to the date of such payment (subject to surrender of this Subordinated Note in the case of a payment of interest at Stated Maturity).

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If the Company fails to pay the money it is required to pay the Trustee, the Trustee, in its own name and as trustee of an express trust, may institute a judicial proceeding for the collection of the sums so due and unpaid, may prosecute such proceeding to judgment or final decree, and may enforce the same against the Company or any other obligor upon this Subordinated Note and collect the moneys adjudged or decreed to be payable in the manner provided by law out of the property of the Company, wherever situated.

Upon an Event of Default, until such Event of Default is cured by the Company or waived by the Holders in the manner provided in the Indenture, except as may be required by any federal or state bank regulatory agency, the Company may not declare or pay any dividends or distributions on, or redeem, purchase, acquire, or make a liquidation payment with respect to, any of the Company’s capital stock, make any payment of principal or interest or premium, if any, on or repay, repurchase or redeem any indebtedness of the Company that ranks equal with or junior to the Subordinated Notes, or make any payments under any guarantee that ranks equal with or junior to the Subordinated Notes, other than: (i) any dividends or distributions in shares of, or options, warrants or rights to subscribe for or purchase shares of, any class of the Company’s common stock; (ii) any declaration of a dividend in connection with the implementation of a shareholders’ rights plan, or the issuance of stock under any such plan in the future, or the redemption or repurchase of any such rights pursuant thereto; (iii) as a result of a reclassification of the Company’s capital stock or the exchange or conversion of one class or series of the Company’s capital stock for another class or series of the Company’s capital stock; (iv) the purchase of fractional interests in shares of the Company’s capital stock in accordance with the conversion or exchange provisions of such capital stock or the security being converted or exchanged; or (v) purchases of any class of the Company’s common stock related to the issuance of common stock or rights under any benefit plans for the Company’s directors, officers or employees or any of the Company’s dividend reinvestment plans.

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[Signature Page Follows]

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IN WITNESS WHEREOF, the undersigned has caused this Subordinated Note to be duly executed.

Dated: August 7, 2025

[Signature Page to Definitive Subordinated Note]

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

This is one of the Subordinated Notes of Byline Bancorp, Inc. referred to in the within-mentioned Indenture:

[Signature Page to Trustee’s Certificate of Authentication - Definitive Subordinated Note ]

ASSIGNMENT FORM

To assign this Subordinated Note, fill in the form below: (I) or (we) assign and transfer this Subordinated Note to:

(Print or type assignee’s name, address and zip code)

(Insert assignee’s social security or tax I.D. No.)

and irrevocably appoint _______________________ agent to transfer this Subordinated Note on the books of the Company. The agent may substitute another to act for him.

Date: Your signature:

(Sign exactly as your name appears on the face of this Subordinated Note)

Tax Identification No:

Signature Guarantee:

(Signatures must be guaranteed by an eligible guarantor institution (banks, stockbrokers, savings and loan associations and credit unions with membership in an approved signature guarantee medallion program), pursuant to Exchange Act Rule 17Ad-15).

The undersigned certifies that it [is / is not] an Affiliate of the Company and that, to its knowledge, the proposed transferee [is / is not] an Affiliate of the Company.

In connection with any transfer or exchange of this Subordinated Note occurring prior to the date that is one year after the later of the date of original issuance of this Subordinated Note and the last date, if any, on which this Subordinated Note was owned by the Company or any Affiliate of the Company, the undersigned confirms that this Subordinated Note is being:

CHECK ONE BOX BELOW:

☐ (1) acquired for the undersigned’s own account, without transfer;

☐ (2) transferred to the Company;

☐ (3) transferred in accordance and in compliance with Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”);

☐ (4) transferred under an effective registration statement under the Securities Act;

☐ (5) transferred in accordance with and in compliance with Regulation S under the Securities Act;

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☐ (6) transferred to an institutional “accredited investor” (as defined in Rule 501(a)(1), (2), (3) or (7) under the Securities Act) or an “accredited investor” (as defined in Rule 501(a)(4) under the Securities Act), that has furnished a signed letter containing certain representations and agreements; or

☐ (7) transferred in accordance with another available exemption from the registration requirements of the Securities Act of 1933, as amended.

Unless one of the boxes is checked, the Paying Agent will refuse to register this Subordinated Note in the name of any person other than the registered Holder thereof; provided, however, that if box (5), (6) or (7) is checked, the Paying Agent may require, prior to registering any such transfer of this Subordinated Note, in its sole discretion, such legal opinions, certifications and other information as the Paying Agent may reasonably request to confirm that such transfer is being made pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act such as the exemption provided by Rule 144 under such Act.

Signature:

Signature Guarantee:

(Signatures must be guaranteed by an eligible guarantor institution (banks, stockbrokers, savings and loan associations and credit unions with membership in an approved signature guarantee medallion program), pursuant to Exchange Act Rule 17Ad-l5).

TO BE COMPLETED BY PURCHASER IF BOX (1) OR (3) ABOVE IS CHECKED.

The undersigned represents and warrants that it is purchasing this Subordinated Note for its own account or an account with respect to which it exercises sole investment discretion and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act of 1933, as amended, and is aware that the sale to it is being made in reliance on Rule 144A and acknowledges that it has received such information regarding the Company as the undersigned has requested pursuant to Rule 144A or has determined not to request such information and that it is aware that the transferor is relying upon the undersigned’s foregoing representations in order to claim the exemption from registration provided by Rule 144A.

Date: Signature:

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EXHIBIT A-2

FORM OF GLOBAL SUBORDINATED NOTE

BYLINE BANCORP, INC.

6.875% FIXED-TO-FLOATING RATE Subordinated Note due 2035

[THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY APPLICABLE STATE SECURITIES LAWS OR ANY OTHER APPLICABLE SECURITIES LAW AND MAY NOT BE TRANSFERRED, SOLD OR OTHERWISE DISPOSED OF EXCEPT (A) PURSUANT TO, AND IN ACCORDANCE WITH, A REGISTRATION STATEMENT THAT IS EFFECTIVE UNDER THE SECURITIES ACT AT THE TIME OF SUCH TRANSFER; (B) TO A PERSON THAT YOU REASONABLY BELIEVE TO BE A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT OR TO A PERSON THAT YOU REASONABLY BELIEVE TO BE AN INSTITUTIONAL ACCREDITED INVESTOR AS DEFINED IN RULE 501(A)(1), (2), (3) OR (7) OF REGULATION D UNDER THE SECURITIES ACT; OR (C) UNDER ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT (INCLUDING, IF AVAILABLE, THE EXEMPTION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT), AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS OR BLUE SKY LAWS, AS EVIDENCED BY A LEGAL OPINION OF COUNSEL IN FORM AND SUBSTANCE REASONABLY SATISFACTORY TO THE COMPANY TO THE EFFECT THAT REGISTRATION IS NOT REQUIRED.]

THIS SUBORDINATED NOTE IS A GLOBAL SUBORDINATED NOTE WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF CEDE & CO AS NOMINEE OF THE DEPOSITORY TRUST COMPANY (“DTC”) OR A NOMINEE OF DTC. THIS SUBORDINATED NOTE IS EXCHANGEABLE FOR SUBORDINATED NOTES REGISTERED IN THE NAME OF A PERSON OTHER THAN DTC OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND NO TRANSFER OF THIS SUBORDINATED NOTE (OTHER THAN A TRANSFER OF THIS SUBORDINATED NOTE AS A WHOLE BY DTC TO A NOMINEE OF DTC OR BY A NOMINEE OF DTC TO DTC OR ANOTHER NOMINEE OF DTC) MAY BE REGISTERED EXCEPT IN LIMITED CIRCUMSTANCES SPECIFIED IN THE INDENTURE.

UNLESS THIS SUBORDINATED NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF DTC TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY SUBORDINATED NOTE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO, OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS

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WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

TRANSFERS OF THIS SUBORDINATED NOTE WILL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF DTC OR A SUCCESSOR THEREOF OR SUCH SUCCESSOR’S NOMINEE AND TRANSFERS OF PORTIONS OF THIS SUBORDINATED NOTE WILL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN THE INDENTURE IDENTIFIED HEREIN.

THIS SECURITY AND THE OBLIGATIONS OF THE COMPANY (AS DEFINED HEREIN) AS EVIDENCED BY THIS SUBORDINATED NOTE (1) ARE NOT DEPOSITS WITH OR HELD BY THE COMPANY AND ARE NOT INSURED OR GUARANTEED BY ANY FEDERAL AGENCY OR INSTRUMENTALITY, INCLUDING, WITHOUT LIMITATION, THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY OTHER GOVERNMENT AGENCY OR FUND AND (2) ARE SUBORDINATE IN THE RIGHT OF PAYMENT TO ALL SENIOR INDEBTEDNESS (AS DEFINED IN THE INDENTURE IDENTIFIED HEREIN).

CERTAIN ERISA CONSIDERATIONS:

THE HOLDER OF THIS SUBORDINATED NOTE, OR ANY INTEREST HEREIN, BY ITS ACCEPTANCE HEREOF OR THEREOF AGREES, REPRESENTS AND WARRANTS THAT IT IS NOT AN EMPLOYEE BENEFIT PLAN, INDIVIDUAL RETIREMENT ACCOUNT OR OTHER PLAN OR ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (“ERISA”), OR SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE “CODE”) (EACH A “PLAN”), OR AN ENTITY WHOSE UNDERLYING ASSETS INCLUDE “PLAN ASSETS” BY REASON OF ANY PLAN’S INVESTMENT IN THE ENTITY, AND NO PERSON INVESTING “PLAN ASSETS” OF ANY PLAN MAY ACQUIRE OR HOLD THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN, UNLESS SUCH PURCHASER OR HOLDER IS ELIGIBLE FOR THE EXEMPTIVE RELIEF AVAILABLE UNDER U.S. DEPARTMENT OF LABOR PROHIBITED TRANSACTION CLASS EXEMPTION 96-23, 95-60, 91-38, 90-1 OR 84-14 OR ANOTHER APPLICABLE EXEMPTION OR ITS PURCHASE AND HOLDING OF THIS SUBORDINATED NOTE, OR ANY INTEREST HEREIN, ARE NOT PROHIBITED BY SECTION 406 OF ERISA OR SECTION 4975 OF THE CODE WITH RESPECT TO SUCH PURCHASE AND HOLDING. ANY PURCHASER OR HOLDER OF THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN WILL BE DEEMED TO HAVE REPRESENTED BY ITS PURCHASE AND HOLDING THEREOF THAT EITHER (i) IT IS NOT AN EMPLOYEE BENEFIT PLAN OR OTHER PLAN TO WHICH TITLE I OF ERISA OR SECTION 4975 OF THE CODE IS APPLICABLE, A TRUSTEE OR OTHER PERSON ACTING ON BEHALF OF ANY SUCH EMPLOYEE BENEFIT PLAN OR PLANS, OR ANY OTHER PERSON OR ENTITY USING THE “PLAN ASSETS” OF ANY SUCH EMPLOYEE BENEFIT PLAN OR PLAN TO FINANCE SUCH PURCHASE, OR (ii) SUCH PURCHASE OR HOLDING WILL NOT RESULT IN A PROHIBITED TRANSACTION UNDER SECTION 406 OF ERISA OR SECTION 4975 OF THE CODE FOR WHICH FULL EXEMPTIVE RELIEF IS NOT AVAILABLE UNDER APPLICABLE STATUTORY OR ADMINISTRATIVE EXEMPTION.

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ANY FIDUCIARY OF ANY PLAN WHO IS CONSIDERING THE ACQUISITION OF THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN SHOULD CONSULT WITH HIS OR HER LEGAL COUNSEL PRIOR TO ACQUIRING THIS SUBORDINATED NOTE OR ANY INTEREST HEREIN.

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No. 20[●]-[●] AI CUSIP / ISIN: [●] / US[●]

QIB CUSIP / ISIN: [●] / [●]

BYLINE BANCORP, INC.

6.875% FIXED-TO-FLOATING RATE SUBORDINATED NOTE DUE 2035

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The Company will pay interest on this Subordinated Note to the Person who is the registered Holder at the close of business on the fifteenth day (whether or not a Business Day) prior to the applicable Interest Payment Date, except as provided in Section 2.10 of the Indenture with respect to Defaulted Interest. This Subordinated Note will be payable as to principal and interest at the office or agency of the Paying Agent, or, at the option of the Company, payment of interest may be made by check delivered to the Holder at its address set forth in the Subordinated Note Register or by transfer to an account maintained with a bank located in the United States appropriately designated by the Person entitled to payment; provided, that the Paying Agent will have received written notice of such account designation at least five Business Days prior to the date of such payment (subject to surrender of this Subordinated Note in the case of a payment of interest at Stated Maturity).

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If the Company fails to pay the money it is required to pay the Trustee, the Trustee, in its own name and as trustee of an express trust, may institute a judicial proceeding for the collection of the sums so due and unpaid, may prosecute such proceeding to judgment or final decree, and may enforce the same against the Company or any other obligor upon this Subordinated Note and collect the moneys adjudged or decreed to be payable in the manner provided by law out of the property of the Company, wherever situated.

Upon an Event of Default, until such Event of Default is cured by the Company or waived by the Holders in the manner provided in the Indenture, except as may be required by any federal or state bank regulatory agency, the Company may not declare or pay any dividends or distributions on, or redeem, purchase, acquire, or make a liquidation payment with respect to, any of the Company’s capital stock, make any payment of principal or interest or premium, if any, on or repay, repurchase or redeem any indebtedness of the Company that ranks equal with or junior to the Subordinated Notes, or make any payments under any guarantee that ranks equal with or junior to the Subordinated Notes, other than: (i) any dividends or distributions in shares of, or options, warrants or rights to subscribe for or purchase shares of, any class of the Company’s common stock; (ii) any declaration of a dividend in connection with the implementation of a shareholders’ rights plan, or the issuance of stock under any such plan in the future, or the redemption or repurchase of any such rights pursuant thereto; (iii) as a result of a reclassification of the Company’s capital stock or the exchange or conversion of one class or series of the Company’s capital stock for another class or series of the Company’s capital stock; (iv) the purchase of fractional interests in shares of the Company’s capital stock in accordance with the conversion or exchange provisions of such capital stock or the security being converted or exchanged; or (v) purchases of any class of the Company’s common stock related to the issuance of common stock or rights under any benefit plans for the Company’s directors, officers or employees or any of the Company’s dividend reinvestment plans.

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[Signature Page Follows]

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IN WITNESS WHEREOF, the undersigned has caused this Subordinated Note to be duly executed.

Dated: August 7, 2025

[Signature Page to Global Subordinated Note]

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

This is one of the Subordinated Notes of Byline Bancorp, Inc. referred to in the within-mentioned Indenture:

[Signature Page to Trustee’s Certificate of Authentication - Global Subordinated Note]

ASSIGNMENT FORM

To assign this Subordinated Note, fill in the form below: (I) or (we) assign and transfer this Subordinated Note to:

(Print or type assignee’s name, address and zip code)

(Insert assignee’s social security or tax I.D. No.)

and irrevocably appoint _______________________ agent to transfer this Subordinated Note on the books of the Company. The agent may substitute another to act for him.

Date: Your signature:

(Sign exactly as your name appears on the face of this Subordinated Note)

Tax Identification No:

Signature Guarantee:

(Signatures must be guaranteed by an eligible guarantor institution (banks, stockbrokers, savings and loan associations and credit unions with membership in an approved signature guarantee medallion program), pursuant to Exchange Act Rule 17Ad-15).

The undersigned certifies that it [is / is not] an Affiliate of the Company and that, to its knowledge, the proposed transferee [is / is not] an Affiliate of the Company.

In connection with any transfer or exchange of this Subordinated Note occurring prior to the date that is one year after the later of the date of original issuance of this Subordinated Note and the last date, if any, on which this Subordinated Note was owned by the Company or any Affiliate of the Company, the undersigned confirms that this Subordinated Note is being:

CHECK ONE BOX BELOW:

☐ (1) acquired for the undersigned’s own account, without transfer;

☐ (2) transferred to the Company;

☐ (3) transferred in accordance and in compliance with Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”);

☐ (4) transferred under an effective registration statement under the Securities Act;

☐ (5) transferred in accordance with and in compliance with Regulation S under the Securities Act;

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☐ (6) transferred to an institutional “accredited investor” (as defined in Rule 501(a)(1), (2), (3) or (7) under the Securities Act) or an “accredited investor” (as defined in Rule 501(a)(4) under the Securities Act), that has furnished a signed letter containing certain representations and agreements; or

☐ (7) transferred in accordance with another available exemption from the registration requirements of the Securities Act of 1933, as amended.

Unless one of the boxes is checked, the Paying Agent will refuse to register this Subordinated Note in the name of any person other than the registered Holder thereof; provided, however, that if box (5), (6) or (7) is checked, the Paying Agent may require, prior to registering any such transfer of this Subordinated Note, in its sole discretion, such legal opinions, certifications and other information as the Paying Agent may reasonably request to confirm that such transfer is being made pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act such as the exemption provided by Rule 144 under such Act.

Signature:

Signature Guarantee:

(Signatures must be guaranteed by an eligible guarantor institution (banks, stockbrokers, savings and loan associations and credit unions with membership in an approved signature guarantee medallion program), pursuant to Exchange Act Rule 17Ad-l5).

TO BE COMPLETED BY PURCHASER IF BOX (1) OR (3) ABOVE IS CHECKED.

The undersigned represents and warrants that it is purchasing this Subordinated Note for its own account or an account with respect to which it exercises sole investment discretion and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act of 1933, as amended, and is aware that the sale to it is being made in reliance on Rule 144A and acknowledges that it has received such information regarding the Company as the undersigned has requested pursuant to Rule 144A or has determined not to request such information and that it is aware that the transferor is relying upon the undersigned’s foregoing representations in order to claim the exemption from registration provided by Rule 144A.

Date: Signature:

SCHEDULE OF INCREASES OR DECREASES IN GLOBAL SUBORDINATED NOTE

The following increases or decreases in this Global Subordinated Note have been made:

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