ADMINISTRATION AGREEMENT BETWEEN DIAMETER CREDIT COMPANY AND DIAMETER FINANCE ADMINSTRATION LLC

Exhibit 10.2

ADMINISTRATION AGREEMENT

BETWEEN

DIAMETER CREDIT COMPANY

AND

DIAMETER FINANCE ADMINSTRATION LLC

This Agreement (“Agreement”) is made as of December 12, 2023 by and between Diameter Credit Company, a Delaware statutory trust (the “Fund”), and Diameter Finance Administration LLC, a Delaware limited liability company (the “Administrator”).

WHEREAS, the Fund is a newly organized, non-diversified, closed-end management investment company that intends to elect to be regulated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”);

WHEREAS, the Fund desires to retain the Administrator to provide administrative services to the Fund in the manner and on the terms hereinafter set forth; and

WHEREAS, the Administrator is willing to provide administrative services to the Fund on the terms and conditions hereafter set forth.

NOW, THEREFORE, in consideration of the premises and the covenants hereinafter contained and for other good and valuable consideration, the receipt and adequacy of which is hereby acknowledged, the Fund and the Administrator hereby agree as follows:

1. Duties of the Administrator.

(a) Employment of Administrator. The Fund hereby retains the Administrator to act as administrator of the Fund, and to furnish, or arrange for others to furnish, the administrative services, personnel and facilities described below, subject to review by and the overall control of the board of trustees of the Fund (the “Board”), for the period and on the terms and conditions set forth in this Agreement. The Administrator hereby accepts such retention and agrees during such period to render, or arrange for the rendering of, such services and to assume the obligations herein set forth subject to the reimbursement of costs and expenses provided for below. The Administrator shall for all purposes herein be deemed to be an independent contractor and shall, unless otherwise expressly provided or authorized herein, have no authority to act for or represent the Fund in any way or otherwise be deemed an agent of the Fund.

(b) Services. The Administrator shall perform (or oversee, or arrange for, the performance of) the administrative and compliance services necessary for the operation of the Fund, including, but not limited to, maintaining financial records, filing of the Fund’s tax returns, overseeing the calculation of the Fund’s net asset value, compliance monitoring (including diligence and oversight of the Fund’s other service providers), preparing reports to the Fund’s

shareholders and reports filed with the U.S. Securities and Exchange Commission (the “SEC”) and other regulators, preparing materials and coordinating meetings of the Board, managing the payment of expenses, managing the payment and receipt of funds for investments and the performance of administrative and professional services rendered by others, providing office space, equipment and office services, and such other services as the Administrator, subject to review by the Board, shall from time to time determine to be necessary or useful to perform its obligations under this Agreement. The Administrator shall also, on behalf of the Fund, conduct relations with sub-administrators, custodians, depositories, transfer agents, escrow agents, dividend disbursing agents, other shareholder servicing agents, accountants, attorneys, underwriters, brokers and intermediaries, corporate fiduciaries, insurers, banks and such other persons in any such other capacity deemed to be necessary or desirable in fulfilling its administrative duties. The Administrator shall make reports to the Board of its performance of its obligations hereunder and furnish advice and recommendations with respect to such other aspects of the business and affairs of the Fund as it shall determine to be desirable; provided that nothing herein shall be construed to require the Administrator to, and the Administrator shall not, in its capacity as Administrator pursuant to this Agreement, provide any advice or recommendation relating to the securities and other assets that the Fund should purchase, retain or sell or any other investment advisory services to the Fund. The Administrator will assist Diameter Principal Finance LLC, the Fund’s investment adviser (the “Adviser”) in providing, on the Fund’s behalf, significant managerial assistance to those portfolio companies that request such assistance. For the avoidance of any doubt, the parties agree that the Administrator is authorized to enter into sub-administration agreements as the Administrator determines necessary in order to carry out the services set forth in this paragraph, subject to the prior approval of the Board.

2. Records. The Administrator agrees to maintain and keep all books, accounts and other records of the Fund that relate to activities performed by the Administrator hereunder and will maintain and keep such books, accounts and records in accordance with the 1940 Act. The Administrator may delegate the foregoing responsibility to a third party with the consent of the Board, subject to the oversight of the Administrator and the Fund. In compliance with the requirements of Rule 31a-3 under the 1940 Act, the Administrator agrees that all records which it or its delegate maintains for the Fund shall at all times remain the property of the Fund, shall be readily accessible during normal business hours, and shall be promptly surrendered upon the termination of the Agreement or otherwise on written request. The Administrator further agrees that all records which it or its delegate maintains for the Fund pursuant to Rule 31a-1 under the 1940 Act will be preserved for the periods prescribed by Rule 31a-2 under the 1940 Act unless any such records are earlier surrendered as provided above. Records shall be surrendered in usable machine-readable form. The Administrator shall have the right to retain copies of such records subject to observance of its confidentiality obligations under this Agreement.

3. Confidentiality. The parties hereto agree that each shall treat confidentially all information provided by each party to the other regarding its business and operations. All confidential information provided by a party hereto, including nonpublic personal information (regulated pursuant to Regulation S-P), shall be used by any other party hereto solely for the purpose of rendering services pursuant to this Agreement and, except as may be required in carrying out this Agreement, shall not be disclosed to any third party, without the prior consent

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of such providing party. The foregoing shall not be applicable to any information that is publicly available when provided or thereafter becomes publicly available other than through a breach of this Agreement, or that is required to be disclosed by any regulatory authority, any authority or legal counsel of the parties hereto, by judicial or administrative process or otherwise by applicable law or regulation.

4. Compensation; Allocation of Costs and Expenses. In full consideration of the provision of the services of the Administrator, the Fund shall reimburse the Administrator for the costs and expenses incurred by the Administrator in performing its obligations, including the Fund’s allocable portion of the costs and expenses of providing personnel and facilities hereunder, except as otherwise provided herein and in that certain Investment Advisory Agreement, by and between the Fund and the Adviser, as amended from time to time (the “Advisory Agreement”).

Except as specifically provided herein or otherwise in the Advisory Agreement, the Fund anticipates that all investment professionals and staff of the Adviser, when and to the extent engaged in providing investment advisory services to the Fund, and the base compensation, bonus and benefits, and the routine overhead expenses, of such personnel allocable to such services, will be provided and paid for by the Adviser. The Fund will bear all other costs and expenses of the Fund’s operations, administration and transactions, including, but not limited to:

(a) investment advisory fees, including management fees and incentive fees, to the Adviser, pursuant to the Advisory Agreement;

(b) the Fund’s allocable portion of compensation, overhead (including rent, IT assistance, office equipment and utilities) and other expenses incurred by the Administrator in performing its administrative obligations under this Agreement, including but not limited to: (i) the Fund’s chief compliance officer, chief financial officer and their respective teams (including any third party staff leveraged by such personnel to perform services for the Fund), investor relations personnel, operations personnel and other non-investment professionals who spend time on Fund services (based on the percentage of time those individuals devote, on a reasonable estimated basis, to the Fund’s business and affairs); and

(c) all other expenses of the Fund’s operations, administration and transactions including, without limitation, those relating to:

(i) organizational and offering expenses associated with the Fund’s offering and the offering of other securities, including the Series A Preferred Shares (including legal, accounting, printing, mailing, subscription processing and filing fees and expenses and other offering expenses, costs incurred in connection with preparing sales materials and other marketing expenses, design and website expenses, fees to attend retail seminars, costs, expenses and reimbursements for travel, meals, accommodations, entertainment and other similar expenses related to meetings or events with prospective investors, broker-dealers, registered investment advisors or financial or other advisors, but excluding the shareholder servicing fee);

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(ii) all taxes, fees, costs, and expenses, retainers and/or other payments of accountants, legal counsel, advisors (including tax advisors), administrators, auditors (including with respect to any additional auditing required under The Directive 2011/61/EU of the European Parliament and of the Council of 8 June 2011 on Alternative Investment Fund Managers and any applicable legislation implemented by an EEA Member state in connection with such Directive (the “AIFMD”), investment bankers, administrative agents, paying agents, custodians or sub-custodians, trustees, consultants (including individuals consulted through expert network consulting firms), advisors, operating partners, deal sourcers (including personnel dedicated to but not employed by the Administrator or its affiliates), and other professionals;

(iii) the cost of calculating individual asset values and the Fund’s net asset value (including the cost and expenses of any independent valuation firms);

(iv) fees and expenses, including travel expenses, incurred by the Adviser, or members of its investment team, or payable to third parties, in respect of due diligence on prospective portfolio companies and, if necessary, in respect of enforcing the Fund’s rights with respect to investments in existing portfolio companies, including, among others, professional fees (including, without limitation, the fees and expenses of consultants and experts) and fees and expenses relating to, or associated with, evaluating, monitoring, researching and performing due diligence on investments and prospective investments;

(v) due diligence and research expenses (including an allocable portion of any research or other service that may deemed to be bundled for the benefit of the Fund), as well as the information technology systems used to obtain such research and other information;

(vi) the costs of any public offerings of the Fund’s shares or the cost of effecting any sales and repurchases of the Shares and other securities, including registration and listing fees and fees payable to rating agencies;

(vii) costs of registration rights granted to certain investors;

(viii) the Management Fee and any Incentive Fee;

(ix) certain costs and expenses relating to distributions paid on the Fund’s shares;

(x) administration fees payable under this Agreement;

(xi) costs incurred in connection with the creation and maintenance of legal entities to hold the Fund’s assets;

(xii) debt service and other costs of borrowings or other financing or derivative transactions (including, for the avoidance of doubt, interest, fees, and related legal expenses);

(xiii) the Adviser’s allocable share of costs incurred in providing significant managerial assistance to those portfolio companies that request it;

(xiv) amounts payable to third parties relating to, or associated with, making or holding investments;

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(xv) costs associated with individual or groups shareholders;

(xvi) transfer agent and custodial fees;

(xvii) costs of derivatives and hedging;

(xviii) commissions and other compensation payable to brokers or dealers;

(xix) fees and expenses payable under any dealer manager and selected dealer agreements, if any;

(xx) costs and expenses (including travel) in connection with the diligence and oversight of the Fund’s service providers;

(xxi) taxes and governmental fees;

(xxii) Independent Trustee fees and expenses;

(xxiii) expenses (including the allocable portions of compensation and out-of-pocket expenses such as travel expenses) or an appropriate portion thereof of employees of the Adviser to the extent such expenses relate to attendance at meetings of the Board or any committees thereof;

(xxiv) costs of preparing financial statements and maintaining books and records and preparing and submitting periodic filings, reports or other documents with the CFTC, SEC, FBAR, AIFMD, ESMA (or other regulatory bodies) and other reporting and compliance costs, but excluding, for the avoidance of doubt, any expenses incurred for general compliance and regulatory matters that are not related to the Fund or its activities;

(xxv) the costs of any reports, proxy statements or other notices to the Fund’s shareholders (including printing and mailing costs), the costs of any Shareholders’ meetings and the compensation of investor relations personnel responsible for the preparation of the foregoing and related matters;

(xxvi) the Fund’s fidelity bond;

(xxvii) trustee and officers/errors and omissions liability insurance, and any other allocated insurance premiums;

(xxviii) information technology and related costs, including costs related to software, hardware and other technological systems (including specialty and custom software);

(xxix) indemnification payments;

(xxx) all fees, costs and expenses of any loan servicers and other service providers and of any custodians, lenders, investment banks and other financing sources;

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(xxxi) costs incurred in connection with any claim, litigation, arbitration, mediation, government investigation or dispute in connection with the business of the Fund and the amount of any judgment or settlement paid in connection therewith;

(xxxii) all fees, costs and expenses, if any, incurred by or on behalf of the Fund in developing, negotiating and structuring prospective or potential investments that are not ultimately made, including, without limitation any reverse termination fees and any liquidated damages, commitment fees that become payable in connection with any proposed investment that is not ultimately made, forfeited deposits or similar payments, including expenses relating to unconsummated investments that may have been attributable to co-investors had such investments been consummated;

(xxxiii) investment costs, including all fees, costs and expenses incurred in sourcing, evaluating, developing, negotiating, structuring, trading (including trade errors), settling, monitoring and holding prospective or actual investments or investment strategies including, without limitation, any financing, legal (including any retainers), filing, auditing, tax, accounting, compliance, loan administration, travel, meals, accommodations and entertainment, advisory, consulting, engineering, data-related and other professional fees, costs and expenses in connection therewith (to the extent the Adviser is not reimbursed by a prospective or actual issuer of the applicable investment or other third parties or capitalized as part of the acquisition price of the transaction);

(xxxiv) costs associated with winding up and liquidating the Fund’s assets;

(xxxv) direct costs and expenses of administration, including audit, accounting, compliance, consulting and legal costs; and

(xxxvi) all other expenses reasonably incurred by the Adviser or the Administrator in connection with making investments and administering the Fund’s business.

From time to time, the Adviser, the Administrator or their affiliates may pay third-party providers of goods or services. The Fund will reimburse the Adviser, the Administrator or such affiliates thereof for any such amounts paid on the Fund’s behalf. From time to time, the Adviser or the Administrator may defer or waive fees and/or rights to be reimbursed for expenses.

All of the foregoing expenses will ultimately be borne by the Fund’s shareholders.

Costs and expenses of the Administrator and the Adviser that are eligible for reimbursement by the Fund will be reasonably allocated to the Fund on the basis of time spent, assets under management, usage rates, proportionate holdings, a combination thereof or other reasonable methods determined by the Administrator.

5. Limit of Liability; Indemnification. The Administrator and its officers, managers, partners, agents, employees, controlling persons, members and any other person or entity affiliated with it (the “Indemnified Parties”) shall not be liable for any error of judgment or mistake of law or for any act or omission or any loss suffered by the Fund in connection with the matters to which this Agreement relates, provided that the Administrator shall not be protected

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against any liability to the Fund or its shareholders to which the Administrator would otherwise be subject by reason of willful misfeasance, bad faith or gross negligence on its part in the performance of its duties or by reason of the reckless disregard of its duties and obligations (“disabling conduct”). An Indemnified Party may consult with counsel and accountants in respect of the Fund’s affairs and shall be fully protected and justified in any action or inaction which is taken in accordance with the advice or opinion of such counsel and accountants; provided, that such counsel or accountants were selected with reasonable care. Absent disabling conduct, the Fund will indemnify the Indemnified Parties against, and hold them harmless from, any damages, liabilities, costs and expenses (including reasonable attorneys’ fees and amounts reasonably paid in settlement) arising from the rendering of the Administrator’s services under this Agreement or otherwise as administrator for the Fund. The Indemnified Parties shall not be liable under this Agreement or otherwise for any loss due to the mistake, action, inaction, negligence, dishonesty, fraud or bad faith of any broker or other agent; provided, that such broker or other agent shall have been selected, engaged or retained and monitored by the Administrator in good faith, unless such action or inaction was made by reason of disabling conduct, or in the case of a criminal action or proceeding, where the Administrator had reasonable cause to believe its conduct was unlawful.

Indemnification shall be made only following: (i) a final decision on the merits by a court or other body before which the proceeding was brought that the Indemnified Party was not liable by reason of disabling conduct or (ii) in the absence of such a decision, a reasonable determination, based upon a review of the facts, that the Indemnified Party was not liable by reason of disabling conduct by (a) the vote of a majority of a quorum of trustees of the Fund who are neither “interested persons” of the Fund nor parties to the proceeding (“disinterested non-party trustees”) or (b) an independent legal counsel in a written opinion.

An Indemnified Party shall be entitled to advances from the Fund for payment of the reasonable expenses (including reasonable counsel fees and expenses) incurred by it in connection with the matter as to which it is seeking indemnification in the manner and to the fullest extent permissible under law. Prior to any such advance, the Indemnified Party shall provide to the Fund a written affirmation of its good faith belief that the standard of conduct necessary for indemnification by the Fund has been met and a written undertaking to repay any such advance if it should ultimately be determined that the standard of conduct has not been met. In addition, at least one of the following additional conditions shall be met: (a) the Indemnified Party shall provide a security in form and amount acceptable to the Fund for its undertaking; (b) the Fund is insured against losses arising by reason of the advance; or (c) a majority of a quorum of disinterested non-party trustees or independent legal counsel, in a written opinion, shall have determined, based on a review of facts readily available to the Fund at the time the advance is proposed to be made, that there is reason to believe that the Indemnified Party will ultimately be found to be entitled to indemnification.

6. Activities of the Administrator. The services of the Administrator to the Fund are not to be deemed to be exclusive, and the Administrator and each affiliate is free to render services to others. It is understood that trustees, officers, employees and shareholders of the Fund are or may become interested in the Administrator and its affiliates, as trustees, officers, members, managers, employees, partners, shareholders or otherwise, and that the Administrator and trustees, officers, members, managers, employees, partners and shareholders of the Administrator and its affiliates are or may become similarly interested in the Fund as shareholders or otherwise.

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7. Duration and Termination.

(a) This Agreement shall become effective as of the date first written above. This Agreement may be terminated at any time, without the payment of any penalty, on 60 days’ written notice, by the vote of a majority of the outstanding voting securities of the Fund or by the vote of the Fund’s trustees or by the Administrator. The provisions of Section 5 of this Agreement shall remain in full force and effect, and the Administrator shall remain entitled to the benefits thereof, notwithstanding any termination of this Agreement. Further, notwithstanding the termination or expiration of this Agreement as aforesaid, the Administrator shall be entitled to any amounts owed under Section 4 through the date of termination or expiration, and Section 5 shall continue in force and effect and apply to the Administrator, its Indemnitees and its representatives as and to the extent applicable.

(b) This Agreement shall continue in effect for two years from the date hereof, or to the extent consistent with the requirements of the 1940 Act, from the date of the Fund’s election to be regulated as a BDC under the 1940 Act, and thereafter shall continue automatically for successive annual periods, provided that such continuance is specifically approved at least annually by (i) the vote of the Board, or by the vote of a majority of the outstanding voting securities of the Fund and (ii) the vote of a majority of the Fund’s Board who are not parties to this Agreement or “interested persons” (as such term is defined in Section 2(a)(19) of the 1940 Act) of any such party, in accordance with the requirements of the 1940 Act.

(c) This Agreement will automatically terminate in the event of its “assignment” (as such term is defined for purposes of Section 15(a)(4) of the 1940 Act).

8. Amendments of this Agreement. This Agreement may be amended pursuant to a written instrument by mutual consent of the parties.

9. Governing Law. This Agreement shall be governed, construed and interpreted in accordance with the laws of the State of New York, provided, however, that nothing herein shall be construed as being inconsistent with the 1940 Act.

10. Entire Agreement. This Agreement contains the entire agreement of the parties and supersedes all prior agreements, understandings and arrangements with respect to the subject matter hereof.

11. Notices. Any notice under this Agreement shall be given in writing, addressed and delivered or mailed, postage prepaid, to the other party at its principal office.

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IN WITNESS WHEREOF, the parties hereto have executed and delivered this Agreement as of the date first above written.

[Signature Page to Administration Agreement]