March [__], 2021 From: [Dealer]1 To: Everbridge, Inc.

Include for Dealer.

Insert if Indenture is not completed at the time of the Confirmation

Include in the Base Call Option Confirmation. Include in the Additional Call Option Confirmation if it is executed before closing of the base deal.

Include in the Additional Call Option Confirmation, but only if the Additional Call Option Confirmation is executed after closing of the base deal.

Include if Dealer is not the highest rated entity

For the Base Call Option Confirm, this is equal to the number of Convertible Notes in principal amount of $1,000 initially issued on the closing date for the Convertible Notes. For the Additional Call Option Confirmation, this is equal to the number of additional Convertible Notes in principal amount of $1,000.

Insert the initial Conversion Rate for the Convertible Notes.

Account Details.

Account for payments to Counterparty:

Account for payments to Dealer:

Offices.

The Office of Counterparty for the Transaction is: Inapplicable, Counterparty is not a Multibranch Party.

The Office of Dealer for the Transaction is: [New York, NY]⁸

Include for Dealer

Notices.

Address for notices or communications to Counterparty:

Address for notices or communications to Dealer:

Representations and Warranties.

(i) Counterparty has all necessary corporate power and authority to execute, deliver and perform its obligations in respect of the Transaction; (ii) such execution, delivery and performance have been duly authorized by all necessary corporate action on Counterparty’s part; and (iii) this Confirmation has been duly and validly executed and delivered by Counterparty and constitutes its valid and binding obligation, enforceable against Counterparty in accordance with its terms, subject to applicable bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and similar laws affecting creditors’ rights and remedies generally, and subject, as to enforceability, to general principles of equity, including principles of commercial reasonableness, good faith and fair dealing (regardless of whether enforcement is sought in a proceeding at law or in equity) and except that rights to indemnification and contribution hereunder may be limited by federal or state securities laws or public policy relating thereto.

In lieu of the representation set forth in Section 3(a)(iii) of the Agreement, neither the execution and delivery of this Confirmation nor the incurrence or performance of obligations of Counterparty hereunder will conflict with or result in a breach of the certificate of incorporation or by-laws (or any equivalent documents) of Counterparty, or any applicable law or regulation, or any order, writ, injunction or decree of any court or governmental authority or agency, or any agreement or instrument filed as an exhibit to Counterparty’s Annual Report on Form 10-K for the year ended December 31, 2020 (other than agreements or instruments filed as exhibits pursuant to Item 601(b)(10)(iii) of Regulations S-K under the Securities Act), in each case to which Counterparty or any of its subsidiaries is a party or by which Counterparty or any of its subsidiaries is bound or to which Counterparty or any of its subsidiaries is subject, or constitute a default under, or result in the creation of any lien under, any such agreement or instrument.

Include for Dealer.

No consent, approval, authorization, or order of, or filing with, any governmental agency or body or any court is required in connection with the execution, delivery or performance by Counterparty of this Confirmation, except such as have been obtained or made and such as may be required under the Securities Act or state securities laws.

Counterparty is not and, after consummation of the transactions contemplated hereby, will not be required to register as an “investment company” as such term is defined in the Investment Company Act of 1940, as amended.

On and immediately after the Trade Date and the Premium Payment Date, (A) the value of the total assets of Counterparty is greater than the sum of the total liabilities (including contingent liabilities) and the capital (as such terms are defined in Section 154 and Section 244 of the General Corporation Law of the State of Delaware) of Counterparty, (B) the capital of Counterparty is adequate to conduct the business of Counterparty, and Counterparty’s entry into the Transaction will not impair its capital, (C) Counterparty has the ability to pay its debts and obligations as such debts mature and does not intend to, or does not believe that it will, incur debt beyond its ability to pay as such debts mature, (D) Counterparty is not “insolvent” (as such term is defined under Section 101(32) of the U.S. Bankruptcy Code (Title 11 of the United States Code) (the “Bankruptcy Code”)) and (E) Counterparty would be able to purchase the number of Shares with respect to the Transaction in compliance with the laws of the jurisdiction of Counterparty’s incorporation (including the adequate surplus and capital requirements of Sections 154 and 160 of the General Corporation Law of the State of Delaware).

Counterparty is not, on the date hereof, aware of any material non-public information with respect to Counterparty or the Shares.

To the knowledge of Counterparty, no state or local (including any non-U.S. jurisdiction’s) law, rule, regulation or regulatory order applicable to the Shares would give rise to any reporting, consent, registration or other requirement (including without limitation a requirement to obtain prior approval from any person or entity) as a result of Dealer or its affiliates owning or holding (however defined) Shares; provided that Counterparty makes no representation or warranty regarding any such requirement that is applicable generally to the ownership of equity securities by Dealer or any of its affiliates solely as a result of it or any of such affiliates being a financial institution or broker-dealer.

Counterparty (A) is capable of evaluating investment risks independently, both in general and with regard to all transactions and investment strategies involving a security or securities; (B) will exercise independent judgment in evaluating the recommendations of any broker-dealer or its associated persons, unless it has otherwise notified the broker-dealer in writing; and (C) has total assets of at least USD 50 million as of the date hereof.

The assets of Counterparty do not constitute “plan assets” under the Employee Retirement Income Security Act of 1974, as amended, the Department of Labor Regulations promulgated thereunder or similar law.

Counterparty represents and warrants that neither it nor any of its subsidiaries has applied, has any present intention to apply and, prior to the termination or settlement of the Transaction, has any intention to apply, for a loan, loan guarantee, direct loan (as that term is defined in the Coronavirus Aid, Relief and Economic Security Act (the “CARES Act”)) or other investment, or to receive any financial assistance or relief under any program or facility (collectively “Financial Assistance”) that (a) is established under applicable law (whether in existence as of the Trade Date or subsequently enacted, adopted or amended), including without limitation the CARES Act and the Federal Reserve Act, as amended, and (b) (i) requires under applicable law (or any regulation, guidance, interpretation or other pronouncement of a governmental authority with

Other Provisions.

Opinions. Counterparty shall deliver to Dealer an opinion of counsel, dated as of the Premium Payment Date, with respect to the matters set forth in Sections 8(a)(i) and (ii), 8(b) and 8(c) (as to agreements governing indebtedness) of this Confirmation (it being understood that such opinions of counsel shall be limited to the federal laws of the United States, the laws of the State of New York and the General Corporate Law of the State of Delaware and may contain customary limitations, exceptions and qualifications). Delivery of such opinion to Dealer shall be a condition precedent for the purpose of Section 2(a)(iii) of the Agreement with respect to each obligation of Dealer under Section 2(a)(i) of the Agreement.

Repurchase Notices. Counterparty shall, on any day on which Counterparty effects any repurchase of Shares, promptly give Dealer a written notice of such repurchase (a “Repurchase Notice”) on such day if following such repurchase, the number of outstanding Shares as determined on such day is (i) less than [__]¹⁰ million (in the case of the first such notice) or (ii) thereafter more than [__]¹¹ million less than the number of Shares included in the immediately preceding Repurchase Notice; provided that Counterparty may provide Dealer advance notice on or prior to any such day to the extent it expects that repurchases effected on such day may result in an obligation to deliver a Repurchase Notice (and in such case, any such advance notice shall be deemed a Repurchase Notice to the maximum extent of repurchases set forth in such advance notice as if Counterparty had executed such repurchases). Counterparty agrees to indemnify and hold harmless Dealer and its affiliates and their respective officers, directors, employees, affiliates, advisors, agents and controlling persons (each, an “Indemnified Person”) from and against any and all losses (including losses relating to Dealer’s hedging activities, assuming Dealer maintains a commercially reasonable hedge with respect to the Transaction, as a consequence of becoming, or of the risk of becoming, a Section 16 “insider”, including without limitation, any forbearance from such hedging activities or cessation of such hedging activities and any commercially reasonable losses in connection therewith with respect to the Transaction), claims, damages, judgments, liabilities and reasonable and documented out-of-pocket expenses (including reasonable attorney’s fees of one outside counsel in each relevant jurisdiction), joint or several, which an Indemnified Person may become subject to, as a result of Counterparty’s failure to provide Dealer with a Repurchase Notice on the day and in the manner specified in this paragraph, and to reimburse, within 30 days, upon written request, each of such Indemnified Persons for any reasonable legal or other out-of-pocket expenses incurred (and supported by invoices or other documentation setting forth in reasonable detail such expenses) in connection with investigating, preparing for, providing testimony or other evidence in connection with or defending any of the

Insert the number of Shares outstanding that would cause Dealer’s current position in the Shares underlying the Transaction, plus the number of Shares underlying any additional transaction (assuming the greenshoe is exercised in full), plus the full number of Shares under the Counterparty’s 2017 and 2019 capped call transactions to increase by 0.5%. To be based on Dealer with the highest number of Shares underlying the Transaction, any additional transaction (assuming the greenshoe is exercised in full) and the 2017 and 2019 capped call transactions.

Insert the number of Shares that, if repurchased, would cause Dealer’s current position in the Shares underlying the Transaction plus the number of Shares underlying any additional transaction (assuming the greenshoe is exercised in full), plus the full number of Shares under the Counterparty’s 2017 and 2019 capped call transactions to increase by a further 0.5% from the threshold for the first Repurchase Notice. To be based on Dealer with the highest number of Shares underlying the Transaction, any additional transaction (assuming the greenshoe is exercised in full) and the 2017 and 2019 capped call transactions.

Regulation M. Counterparty is not on the Trade Date engaged in a distribution, as such term is used in Regulation M under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), of any securities of Counterparty, other than a distribution meeting the requirements of the exception set forth in Rules 101(b)(10) and 102(b)(7) of Regulation M. Counterparty shall not, until the second Scheduled Trading Day immediately following the Effective Date, engage in any such distribution.

No Manipulation. Counterparty is not entering into the Transaction to create actual or apparent trading activity in the Shares (or any security convertible into or exchangeable for the Shares) or to raise or depress or otherwise manipulate the price of the Shares (or any security convertible into or exchangeable for the Shares) or otherwise in violation of the Exchange Act.

Transfer or Assignment.

Counterparty shall have the right to transfer or assign all or any of its rights and obligations hereunder with respect to all or any of the Options hereunder (such Options, the “Transfer Options”); provided that such transfer or assignment shall be subject to the following conditions:

With respect to any Transfer Options, Counterparty shall not be released from its notice and indemnification obligations pursuant to Section 9(b) or any obligations under Section 9(n) of this Confirmation;

Such transfer or assignment shall be effected on terms, including any reasonable undertakings by such third party (including, but not limited to, an undertaking with respect to compliance with applicable securities laws in a manner that, in the reasonable judgment of Dealer, will not expose Dealer to material risks under applicable securities laws) and execution of any documentation and delivery of legal opinions with respect to securities laws and other matters by such third party and Counterparty, as are reasonably requested and reasonably satisfactory to Dealer;

Dealer will not, as a result of such transfer or assignment, be required to pay the transferee or assignee on any payment date an amount under Section 2(d)(i)(4) of the Agreement greater than an amount that Dealer would have been required to pay to Counterparty in the absence of such transfer or assignment;

An Event of Default, Potential Event of Default or Termination Event will not occur as a result of such transfer or assignment;

Counterparty shall cause the transferee to make such Payee Tax Representations and to provide such tax documentation as may be reasonably requested by Dealer to permit Dealer to determine that results described in clauses (C) and (D) will not occur upon or after such transfer or assignment, including but not limited to providing tax documentation specified in Section 9(aa) of this Confirmation and making the tax representations specified in Section 9(dd) of this Confirmation on or prior to such transfer and at the other times specified in such Sections; and

Counterparty shall be responsible for all reasonable costs and expenses, including reasonable counsel fees, incurred by Dealer in connection with such transfer or assignment.

Dealer may transfer or assign all or any part of its rights or obligations under the Transaction (A) without Counterparty’s consent, to any affiliate of Dealer (1) that has a long-term issuer rating that is equal to or better than Dealer’s credit rating at the time of such transfer or assignment, or (2) whose obligations hereunder will be guaranteed, pursuant to the terms of a customary guarantee in a form used by Dealer generally for similar transactions, by Dealer or Dealer’s ultimate parent entity (provided that in connection with any assignment or transfer pursuant to clause (A)(2) hereof, the guarantee of any guarantor of the relevant transferee’s obligations under the Transaction shall constitute a Credit Support Document under the Agreement), or (B) with Counterparty’s consent (such consent not to be unreasonably withheld or delayed), to any third party financial institution that is a recognized dealer in the market for U.S. corporate equity derivatives and that has a long-term issuer rating equal to or better than the lesser of (1) the credit rating of Dealer at the time of the transfer and (2) A- by Standard and Poor’s Rating Group, Inc. or its successor (“S&P”), or A3 by ▇▇▇▇▇’▇ Investor Service, Inc. or its successor (“Moody’s”) or, if either S&P or Moody’s ceases to rate such debt, at least an equivalent rating or better by a substitute rating agency mutually agreed by Counterparty and Dealer; provided that, in the case of any transfer or assignment described in clause (A) or (B) above, (I) an Event of Default, Potential Event of Default or Termination Event will not occur as a result of such transfer and assignment, (II) Counterparty will not receive from the transferee or assignee on any payment date or delivery date an amount or a number of Shares, as applicable, lower than the amount or the number of Shares, as applicable, that Dealer would have been required to pay or deliver to Counterparty in the absence of such transfer or assignment, (III) Counterparty

Notwithstanding any other provision in this Confirmation to the contrary requiring or allowing Dealer to purchase, sell, receive or deliver any Shares or other securities, or make or receive any payment in cash, to or from Counterparty, Dealer may designate any of its affiliates to purchase, sell, receive or deliver such Shares or other securities, or to make or receive such payment in cash, and otherwise to perform Dealer’s obligations in respect of the Transaction and any such designee may assume such obligations. Dealer shall be discharged of its obligations to Counterparty to (and only to) the extent of any such performance.

Staggered Settlement. If upon advice of counsel with respect to applicable legal and regulatory requirements, including any requirements relating to Dealer’s commercially reasonable hedging activities hereunder, Dealer reasonably determines that it would not be practicable or advisable to deliver, or to acquire Shares to deliver, any or all of the Shares to be delivered by Dealer on any Settlement Date for the Transaction, Dealer may, by notice to Counterparty on or prior to any Settlement Date (a “Nominal Settlement Date”), elect to deliver the Shares on two or more dates (each, a “Staggered Settlement Date”) as follows:

in such notice, Dealer will specify to Counterparty the related Staggered Settlement Dates (each of which shall occur on or prior to such Nominal Settlement Date) and the number of Shares that it will deliver on each Staggered Settlement Date;

the aggregate number of Shares that Dealer will deliver to Counterparty hereunder on all such Staggered Settlement Dates will equal the number of Shares that Dealer would otherwise be required to deliver on such Nominal Settlement Date; and

if the Net Share Settlement terms or the Combination Settlement terms set forth above were to apply on the Nominal Settlement Date, then the Net Share Settlement terms or the Combination Settlement terms, as the case may be, will apply on each Staggered Settlement Date, except that the Shares otherwise deliverable on such Nominal Settlement Date will be allocated among such Staggered Settlement Dates as specified by Dealer in the notice referred to in clause (i) above.

[Role of Agent.]¹²[Insert relevant Dealer language regarding agency or communications with employees .]

Additional Termination Events.

Notwithstanding anything to the contrary in this Confirmation, upon any Early Conversion in respect of which a “Notice of Conversion” (as defined in the Indenture) that is effective as to Counterparty has been delivered by the relevant converting Holder:

Counterparty may, within ten Scheduled Trading Days of the “Conversion Date” (as defined in the Indenture) for such Early Conversion, provide written notice (an “Early Conversion Notice”) to Dealer specifying the number of Convertible Notes surrendered for conversion on such Conversion Date (such Convertible Notes, the “Affected Convertible Notes”) and the anticipated settlement date, and the giving of such Early Conversion Notice shall constitute an Additional Termination Event as provided in this clause (i); provided that any such Early Conversion Notice shall contain a written representation by Counterparty to Dealer that Counterparty is not, on the date of such Early Conversion Notice, in possession of any material nonpublic information with respect to Counterparty or the Shares; provided further that the provisions of this Section 9(h)(i) shall not apply to any Affected Convertible Note (i) with respect to which Counterparty has elected the “Exchange in Lieu of Conversion” option pursuant to Section 14.12 of the Indenture and (ii) that has been accepted by the designated financial institution pursuant to Section 14.12 of the

Include for Dealer.

upon receipt of any such Early Conversion Notice, Dealer shall designate an Exchange Business Day as an Early Termination Date (which Exchange Business Day shall be on or as promptly as reasonably practicable after the related conversion settlement date for such Early Conversion) with respect to the portion of the Transaction corresponding to a number of Options (the “Affected Number of Options”) equal to the lesser of (x) the number of Affected Convertible Notes [minus the “Affected Number of Options” (as defined in the Base Call Option Confirmation letter agreement dated March [__], 2021 between Dealer and Counterparty (the “Base Call Option Confirmation”), if any, that relate to such Affected Convertible Notes]¹³ and (y) the Number of Options as of the Conversion Date for such Early Conversion;

any payment hereunder with respect to such termination shall be calculated pursuant to Section 6 of the Agreement as if (x) an Early Termination Date had been designated in respect of a Transaction having terms identical to the Transaction and a Number of Options equal to the Affected Number of Options, (y) Counterparty were the sole Affected Party with respect to such Additional Termination Event and (z) the terminated portion of the Transaction were the sole Affected Transaction (and, for the avoidance of doubt, the provisions of Section 9(l) shall apply to any amount that is payable by Dealer to Counterparty pursuant to this Section 9(h)(i) as if Counterparty were not the Affected Party);

for the avoidance of doubt, in determining the amount payable in respect of such Affected Transaction pursuant to Section 6 of the Agreement, the Calculation Agent shall assume that (x) the relevant Early Conversion and any conversions, adjustments, agreements, payments, deliveries or acquisitions by or on behalf of Counterparty leading thereto had not occurred, (y) no adjustments to the Conversion Rate have occurred pursuant to any Excluded Provision and (z) the corresponding Convertible Notes remain outstanding; and

the Transaction shall remain in full force and effect, except that, as of the Conversion Date for such Early Conversion, the Number of Options shall be reduced by the Affected Number of Options.

Within ten Scheduled Trading Days following any Repurchase Event (as defined below), Counterparty may notify Dealer of such Repurchase Event and the aggregate principal amount of Convertible Notes subject to such Repurchase Event (any such notice, a “Convertible Notes Repurchase Notice”); provided that any such Convertible Notes Repurchase Notice shall contain a written representation by Counterparty to Dealer that Counterparty is not, on the date of such Convertible Notes Repurchase Notice, in possession of any material nonpublic information with respect to Counterparty or the Shares. The receipt by Dealer from Counterparty of any Convertible Notes Repurchase Notice shall constitute an Additional Termination Event as provided in this Section 9(h)(ii). Upon receipt of any such Convertible Notes Repurchase Notice, Dealer shall designate an Exchange Business Day following receipt of such Convertible Notes Repurchase Notice (which Exchange Business Day shall be on or as promptly as reasonably practicable after the related repurchase settlement date for the relevant

Include in Additional Call Option Confirmation only.

Notwithstanding anything to the contrary in this Confirmation if an event of default with respect to Counterparty occurs under the terms of the Convertible Notes as set forth in Section 6.01 of the Indenture and such event of default results in the Convertible Notes being accelerated and declared due and payable, then such event of default shall constitute an Additional Termination Event applicable to the Transaction and, with respect to such Additional Termination Event, (A) Counterparty shall be deemed to be the sole Affected Party, (B) the Transaction shall be the sole Affected Transaction and (C) Dealer shall be the party entitled to designate an Early Termination Date pursuant to Section 6(b) of the Agreement (which Early Termination Date shall be on or as promptly as reasonably practicable after Dealer becomes aware of the occurrence of such acceleration).

Notwithstanding anything to the contrary in this Confirmation, the occurrence of an Amendment Event shall constitute an Additional Termination Event applicable to the Transaction and, with respect to such Additional Termination Event, (A) Counterparty shall be deemed to be the sole Affected Party, (B) the Transaction shall be the sole Affected Transaction and (C) Dealer shall be the party entitled to designate an Early Termination Date pursuant to Section 6(b) of the Agreement. “Amendment Event” means that Counterparty amends, modifies, supplements, waives or obtains a waiver in respect of any term of the Indenture or the Convertible Notes governing the principal amount, coupon, maturity, repurchase obligation of Counterparty, any term relating to conversion of the Convertible Notes (including changes to the conversion rate, conversion rate adjustment provisions, conversion settlement dates or conversion conditions), or any term that would require consent of the holders of not less than 100%

Include in Additional Call Option Confirmation only.

Amendments to Equity Definitions.

Solely in respect of adjustments to the Cap Price pursuant to Section 9(x), Section 11.2(e)(vii) of the Equity Definitions is hereby amended by deleting the words “that may have a diluting or concentrative effect on the theoretical value of the relevant Shares” and replacing them with the words “that is the result of a corporate event involving the Issuer or its securities that has a material economic effect on the Shares or options on the Shares; provided that such event is not based on (a) an observable market, other than the market for the Company’s own stock or (b) an observable index, other than an index calculated and measured solely by reference to Company’s own operations.”

Section 12.6(a)(ii) of the Equity Definitions is hereby amended by (1) inserting “(1)” immediately following the word “means” in the first line thereof and (2) inserting immediately prior to the semi-colon at the end of subsection (B) thereof the following words: “or (2) the occurrence of any of the events specified in Section 5(a)(vii)(1) through (9) of the ISDA Master Agreement with respect to that Issuer; provided that the period for dismissal, discharge, stay or restraint therein shall be increased from within 15 days to within 60 days”.

Section 12.9(b)(i) of the Equity Definitions is hereby amended by (1) replacing “either party may elect” with “Dealer may elect” and (2) replacing “notice to the other party” with “notice to Counterparty” in the first sentence of such section.

No Setoff. Neither party shall have the right to set off any obligation that it may have to the other party under the Transaction against any obligation such other party may have to it, whether arising under the Agreement, this Confirmation or any other agreement between the parties hereto, by operation of law or otherwise and each party hereby waives any such right to setoff.

Adjustments. For the avoidance of doubt, whenever the Calculation Agent is called upon to make an adjustment pursuant to the terms of this Confirmation or the Equity Definitions to take into account the effect of an event (other than on adjustments made by reference to the Indenture), the Calculation Agent shall make such adjustment in a commercially reasonable manner by reference to the effect of such event on Dealer, assuming that Dealer maintains a commercially reasonable hedge position.

Alternative Calculations and Payment on Early Termination and on Certain Extraordinary Events. If (a) an Early Termination Date (whether as a result of an Event of Default or a Termination Event) occurs or is designated with respect to the Transaction or (b) the Transaction is cancelled or terminated upon the occurrence of an Extraordinary Event (except as a result of (i) a Nationalization, Insolvency or Merger Event in which the consideration to be paid to holders of Shares consists solely of cash, (ii) an Announcement Event, Merger Event or Tender Offer that is within Counterparty’s control, or (iii) an Event of Default in which Counterparty is the Defaulting Party or a Termination Event in which Counterparty is the Affected Party other than an Event of Default of the type described in Section 5(a)(iii), (v), (vi), (vii) or (viii) of the Agreement or a Termination Event of the type described in Section 5(b) of the Agreement, in each case that resulted from an event or events outside Counterparty’s control), and if Dealer would owe any amount to Counterparty pursuant to Section 6(d)(ii) of the Agreement or any Cancellation Amount pursuant to Article 12 of the Equity Definitions (any such amount, a “Payment Obligation”), then Dealer shall satisfy the Payment Obligation by the Share Termination Alternative (as defined below), unless (a) Counterparty gives irrevocable telephonic notice to Dealer, confirmed in writing within one Scheduled Trading Day, no later than 12:00 p.m. (New York City time) on the date of

Share Termination Alternative:

Share Termination Delivery Property:

Share Termination Unit Price:

Share Termination Delivery Unit:

Failure to Deliver:

Other applicable provisions:

Waiver of Jury Trial. Each party waives, to the fullest extent permitted by applicable law, any right it may have to a trial by jury in respect of any suit, action or proceeding relating to the Transaction. Each party (i) certifies that no representative, agent or attorney of either party has represented, expressly or otherwise, that such other party would not, in the event of such a suit, action or proceeding, seek to enforce the foregoing waiver and (ii) acknowledges that it and the other party have been induced to enter into the Transaction, as applicable, by, among other things, the mutual waivers and certifications provided herein.

Registration. Counterparty hereby agrees that if, in the good faith reasonable judgment of Dealer, based on the advice of counsel, the Shares (“Hedge Shares”) acquired by Dealer for the purpose of effecting a commercially reasonable hedge of its obligations pursuant to the Transaction cannot be sold in the public market by Dealer without registration under the Securities Act, Counterparty shall, at its election, either (i) in order to allow Dealer to sell the Hedge Shares in a registered offering, make available to Dealer an effective registration statement under the Securities Act and enter into an agreement, in form and substance reasonably satisfactory to Dealer, substantially in the form of an underwriting agreement customary for a registered secondary offering of a similar size in respect of a similar issuer; provided, however, that if Dealer, in its reasonable discretion, is not satisfied with access to due diligence materials, the results of its due diligence investigation, or the procedures and documentation for the registered offering referred to above, then clause (ii) or clause (iii) of this paragraph shall apply at the election of Counterparty, (ii) in order to allow Dealer to sell the Hedge Shares in a private placement, use commercially reasonable efforts to enter into a private placement agreement substantially similar to private placement purchase agreements customary for private placements of equity securities of a similar size in respect of a similar issuer, in form and substance commercially reasonably satisfactory to Dealer (in which case, the Calculation Agent shall make any adjustments to the terms of the Transaction that are necessary, in its commercially reasonable judgment, to compensate Dealer for any discount from the public market price of the Shares incurred on the sale of Hedge Shares in a private placement; for the avoidance of doubt, any such adjustment shall take into account the illiquidity resulting from the fact that the Shares will not be registered for resale); provided that no “comfort letter” or accountants’ consent shall be required to be delivered in connection with any private placements, or (iii) purchase the Hedge Shares then held by Dealer from Dealer at the then current market price on such Exchange Business Days, and in the amounts and at such time(s), reasonably requested by Dealer.

Tax Disclosure. Effective from the date of commencement of discussions concerning the Transaction, Counterparty and each of its employees, representatives, or other agents may disclose to any and all persons, without limitation of any kind, the tax treatment and tax structure of the Transaction and all materials of any kind (including opinions or other tax analyses) that are provided to Counterparty relating to such tax treatment and tax structure.

Right to Extend. Dealer may postpone or add, in whole or in part, any Valid Day or Valid Days during the Settlement Averaging Period or any other date of valuation, payment or delivery by Dealer, with respect to some or all of the Options hereunder, if Dealer reasonably determines, in the case of clause (i), in its commercially reasonable judgment or, in the case of clause (ii), based on advice of counsel, that such action is reasonably necessary or appropriate (i) to preserve Dealer’s commercially reasonable hedging or hedge unwind activity hereunder in light of existing

Status of Claims in Bankruptcy. Dealer acknowledges and agrees that this Confirmation is not intended to convey to Dealer rights against Counterparty with respect to the Transaction that are senior to the claims of common stockholders of Counterparty in any United States bankruptcy proceedings of Counterparty; provided that nothing herein shall limit or shall be deemed to limit Dealer’s right to pursue remedies in the event of a breach by Counterparty of its obligations and agreements with respect to the Transaction; provided, further that nothing herein shall limit or shall be deemed to limit Dealer’s rights in respect of any transactions other than the Transaction.

Securities Contract; Swap Agreement. The parties hereto intend for (i) the Transaction to be a “securities contract” and a “swap agreement” as defined in the Bankruptcy Code (Title 11 of the United States Code) (the “Bankruptcy Code”), and the parties hereto to be entitled to the protections afforded by, among other Sections, Sections 362(b)(6), 362(b)(17), 546(e), 546(g), 555 and 560 of the Bankruptcy Code, (ii) a party’s right to liquidate the Transaction and to exercise any other remedies upon the occurrence of any Event of Default under the Agreement with respect to the other party to constitute a “contractual right” as described in the Bankruptcy Code, and (iii) each payment and delivery of cash, securities or other property hereunder to constitute a “margin payment” or “settlement payment” and a “transfer” as defined in the Bankruptcy Code.

Notice of Certain Other Events. Counterparty covenants and agrees that:

promptly following the public announcement of the results of any election by the holders of Shares with respect to the consideration due upon consummation of any Merger Event, Counterparty shall give Dealer written notice of (x) the weighted average of the types and amounts of consideration that holders of Shares have elected to receive upon consummation of such Merger Event or (y) if no holders of Shares affirmatively make such election, the types and amounts of consideration actually received by holders of Shares (the date of such notification, the “Consideration Notification Date”); provided that in no event shall the Consideration Notification Date be later than the date on which such Merger Event is consummated; and

(A) Counterparty shall give Dealer commercially reasonable advance (but in no event less than one Exchange Business Day) written notice of the section or sections of the Indenture and, if applicable, the formula therein, pursuant to which any adjustment will be made to the Convertible Notes in connection with any Potential Adjustment Event, Merger Event or Tender Offer (or, if the Convertible Notes are no longer outstanding, any such Potential Adjustment Event, Merger Event or Tender Offer that would have resulted in an adjustment to the Convertible Notes, if the Convertible Notes were outstanding) and (B) promptly following any such adjustment, Counterparty shall give Dealer written notice of the details of such adjustment (or such adjustment that would have occurred if the Convertible Notes were outstanding, as the case may be).

Wall Street Transparency and Accountability Act. In connection with Section 739 of the Wall Street Transparency and Accountability Act of 2010 (“WSTAA”), the parties hereby agree that neither the enactment of WSTAA or any regulation under the WSTAA, nor any requirement under WSTAA or an amendment made by WSTAA, shall limit or otherwise impair either party’s otherwise applicable rights to terminate, renegotiate, modify, amend or supplement this Confirmation or the Agreement, as applicable, arising from a termination event, force majeure, illegality, increased costs, regulatory change or similar event under this Confirmation, the Equity Definitions incorporated herein, or the Agreement (including, but not limited to, rights arising from Change in Law, Hedging Disruption, Increased Cost of Hedging, an Excess Ownership Position, or Illegality (as defined in the Agreement)).

Agreements and Acknowledgements Regarding Hedging. Counterparty understands, acknowledges and agrees that: (A) at any time on and prior to the Expiration Date, Dealer and its affiliates may buy or sell Shares or other securities or buy or sell options or futures contracts or enter into swaps or other derivative securities in order to adjust its hedge position with respect to the Transaction; (B) Dealer and its affiliates also may be active in the market for Shares other than in connection with hedging activities in relation to the Transaction; (C) Dealer shall make its own determination as to whether, when or in what manner any hedging or market activities in securities of Issuer shall be conducted and shall do so in a manner that it deems appropriate to hedge its price and market risk with respect to the Relevant Prices; and (D) any market activities of Dealer and its affiliates with respect to Shares may affect the market price and volatility of Shares, as well as the Relevant Prices, each in a manner that may be adverse to Counterparty.

Early Unwind. In the event the sale of the [“Underwritten Securities”]¹⁵[“Option Securities”]¹⁶ (as defined in the Purchase Agreement) is not consummated with the Initial Purchasers for any reason, or Counterparty fails to deliver to Dealer opinions of counsel as required pursuant to Section 9(a), in each case by 5:00 p.m. (New York City time) on the Premium Payment Date, or such later date as agreed upon by the parties (the Premium Payment Date or such later date the “Early Unwind Date”), the Transaction shall automatically terminate (the “Early Unwind”), on the Early Unwind Date and (i) the Transaction and all of the respective rights and obligations of Dealer and Counterparty under the Transaction shall be cancelled and terminated and (ii) each party shall be released and discharged by the other party from and agrees not to make any claim against the other party with respect to any obligations or liabilities of the other party arising out of and to be performed in connection with the Transaction either prior to or after the Early Unwind Date. Each of Dealer and Counterparty represents and acknowledges to the other that upon an Early Unwind, all obligations with respect to the Transaction shall be deemed fully and finally discharged.

Payment by Counterparty. In the event that, following payment of the Premium, (i) an Early Termination Date occurs or is designated with respect to the Transaction as a result of a Termination Event or an Event of Default (other than an Event of Default arising under Section 5(a)(ii) or 5(a)(iv) of the Agreement) and, as a result, Counterparty owes to Dealer an amount calculated under Section 6(e) of the Agreement, or (ii) Counterparty owes to Dealer, pursuant to Section 12.7 or Section 12.9 of the Equity Definitions, an amount calculated under Section 12.8 of the Equity Definitions, such amount shall be deemed to be zero.

Other Adjustments Pursuant to the Equity Definitions. Notwithstanding anything to the contrary in this Confirmation, solely for the purpose of adjusting the Cap Price, the terms “Potential Adjustment Event,” “Merger Event,” and “Tender Offer” shall each have the meanings assigned to such term in the Equity Definitions (as amended by Section 9(i)(i)) and the provisions modifying the term “Tender Offer” opposite the caption “Announcement Event” in Section 3 above), and upon the occurrence of a Merger Date, the occurrence of a Tender Offer Date, or declaration by Counterparty of the terms of any Potential Adjustment Event, respectively, as such terms are defined in the Equity Definitions, the Calculation Agent shall determine in a commercially reasonable manner whether such occurrence or declaration, as applicable, has had a material economic effect on the Transactions and, if so, may, in its commercially reasonable discretion, adjust the Cap Price to preserve the fair value of the Options; provided that in no event shall the Cap Price be less than the Strike Price; provided further that (i) any adjustment to the Cap Price made pursuant to this Section 9(x) shall be made without duplication of any other adjustment hereunder (including, for the avoidance of doubt, adjustment made pursuant to the provisions opposite the captions “Method of Adjustment,” “Consequences of Merger Events / Tender Offers” and “Consequence of Announcement Events” in Section 3 above).

Insert term defined in Purchase Agreement for Base Call Option Confirmation.

Insert term defined in Purchase Agreement for Additional Call Option Confirmation.

Conduct Rules. Each party acknowledges and agrees to be bound by the Conduct Rules of the Financial Industry Regulatory Authority, Inc. applicable to transactions in options, and further agrees not to violate the position and exercise limits set forth therein.

Risk Disclosure Statement. Counterparty represents and warrants that it has received, read and understands the OTC Options Risk Disclosure Statement provided by Dealer and a copy of the most recent disclosure pamphlet prepared by The Options Clearing Corporation entitled “Characteristics and Risks of Standardized Options”.

Delivery of Tax Certificates. For purposes of Section 4(a)(i) of the Agreement, on or prior to the Trade Date and at any other time reasonably requested by Dealer, Counterparty shall have delivered to Dealer a properly completed Internal Revenue Service Form W-9. On or prior to the Trade Date and at any other time reasonably requested by Counterparty, Dealer shall have delivered to Counterparty a properly completed Internal Revenue Service Form [W-9]¹⁷.

Withholding Tax Imposed on Payments to Non-U.S. Counterparties under the United States Foreign Account Tax Compliance Act. “Tax” and “Indemnifiable Tax”, each as defined in Section 14 of the Agreement, shall not include any U.S. federal withholding tax imposed or collected pursuant to FATCA (a “FATCA Withholding Tax”). “FATCA” is defined as Sections 1471 through 1474 of the U.S. Internal Revenue Code of 1986, as amended (the “Code”), any current or future regulations or official interpretations thereof, any agreement entered into pursuant to Section 1471(b) of the Code, or any fiscal or regulatory legislation, rules or practices adopted pursuant to any intergovernmental agreement entered into in connection with the implementation of such Sections of the Code. For the avoidance of doubt, a FATCA Withholding Tax is a Tax the deduction or withholding of which is required by applicable law for the purposes of Section 2(d) of the Agreement.

Incorporation of the 2015 Section 871(m) Protocol. To the extent that either party to the Agreement with respect to this Transaction is not an adhering party to the ISDA 2015 Section 871(m) Protocol published by the International Swaps and Derivatives Association, Inc. on November 2, 2015 and available on the ISDA website (▇▇▇.▇▇▇▇.▇▇▇), as may be amended, supplemented, replaced or superseded from time to time (the “871(m) Protocol”), the parties to this Confirmation agree that the provisions and amendments set out in the Attachment to the 871(m) Protocol shall apply to this Confirmation. The parties further agree that, solely for purposes of applying such provisions and amendments to this Confirmation, this Confirmation will be deemed to be a Covered Master Agreement and that the Implementation Date shall be the effective date of this Confirmation regardless of the definitions of such terms in the 871(m) Protocol. Notwithstanding the foregoing and item 6 of the Attachment to the 871(m) Protocol, Counterparty and Dealer acknowledge and agree that neither of them is making the representation set forth in Part 2(a)(i) of the Schedule to each 2002 ISDA Master Agreement.

Payee Tax Representations. For purposes of Section 3(f) of the Agreement, Counterparty represents that it is a “U.S. person” (as that term is used in section 1.1441-4(a)(3)(ii) of the U.S. Treasury Regulations) for U.S. federal income tax purposes and “exempt” within the meaning of sections 1.6041-3(p) and 1.6049-4(c) of the U.S. Treasury Regulations from information reporting on U.S. Internal Revenue Service Form 1099 and backup withholding.

[U.S. Resolution Stay Provisions.

Recognition of the U.S. Special Resolution Regimes.

Include appropriate tax form for Dealer

In the event that Dealer becomes subject to a proceeding under (i) the Federal Deposit Insurance Act and the regulations promulgated thereunder or (ii) Title II of the ▇▇▇▇-▇▇▇▇▇ ▇▇▇▇ Street Reform and Consumer Protection Act and the regulations promulgated thereunder (a “U.S. Special Resolution Regime”) the transfer from Dealer of this Confirmation, and any interest and obligation in or under, and any property securing, this Confirmation, will be effective to the same extent as the transfer would be effective under the U.S. Special Resolution Regime if this Confirmation, and any interest and obligation in or under, and any property securing, this Confirmation were governed by the laws of the United States or a state of the United States.

In the event that Dealer or an Affiliate becomes subject to a proceeding under a U.S. Special Resolution Regime, any Default Rights (as defined in 12 C.F.R. §§ 252.81, 47.2 or 382.1, as applicable (“Default Right”)) under this Confirmation that may be exercised against Dealer are permitted to be exercised to no greater extent than such Default Rights could be exercised under the U.S. Special Resolution Regime if this Confirmation were governed by the laws of the United States or a state of the United States.

Limitation on Exercise of Certain Default Rights Related to an Affiliate’s Entry Into Insolvency Proceedings. Notwithstanding anything to the contrary in this Confirmation, the parties expressly acknowledge and agree that:

Counterparty shall not be permitted to exercise any Default Right with respect to this Confirmation or any Affiliate Credit Enhancement that is related, directly or indirectly, to an Affiliate of the Dealer becoming subject to receivership, insolvency, liquidation, resolution, or similar proceeding (an “Insolvency Proceeding”), except to the extent that the exercise of such Default Right would be permitted under the provisions of 12 C.F.R. 252.84, 12 C.F.R. 47.5 or 12 C.F.R. 382.4, as applicable; and

Nothing in this Confirmation shall prohibit the transfer of any Affiliate Credit Enhancement, any interest or obligation in or under such Affiliate Credit Enhancement, or any property securing such Affiliate Credit Enhancement, to a transferee upon or following an Affiliate of Dealer becoming subject to an Insolvency Proceeding, unless the transfer would result in the Counterparty being the beneficiary of such Affiliate Credit Enhancement in violation of any law applicable to the Counterparty.

For the purpose of this paragraph:

U.S. Protocol. If Counterparty has previously adhered to, or subsequently adheres to, the ISDA 2018 U.S. Resolution Stay Protocol as published by the International Swaps and Derivatives Association, Inc. as of July 31, 2018 (the “ISDA U.S. Protocol”), the terms of such protocol shall be incorporated into and form a part of this Confirmation and the terms of the ISDA U.S. Protocol shall supersede and replace the terms of this section. For

Pre-existing In-Scope Agreements. Dealer and Counterparty agree that to the extent there are any outstanding “in-scope QFCs,” as defined in 12 C.F.R. § 252.82(d), that are not excluded under 12 C.F.R. § 252.88, between Dealer and Counterparty that do not otherwise comply with the requirements of 12 C.F.R. § 252.2, 252.81–8 (each such agreement, a “Preexisting In-Scope Agreement”), then each such Preexisting In-Scope Agreement is hereby amended to include the foregoing provisions in this section, with references to “this Confirmation” being understood to be references to the applicable Preexisting In-Scope Agreement.]¹⁸

[Dealer Boilerplate]. Insert additional Dealer boilerplate, if any.

Include Dealer’s preferred version of U.S. Resolution Stay provision, as appropriate

EVERBRIDGE, INC.

By:

Authorized Signatory

Name:

Include for Dealer.

Include for Dealer.