Management Change/Compensation (Form 8-K)

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On July 29, 2026, Daniel Kasell notified Diameter Credit Company (the "Company") of his decision to resign from the Board of Trustees of the Company (the "Board") and all committees thereof, effective immediately. Mr. Kasell's resignation is not the result of any disagreement with the Company, its investment adviser, or any of their affiliates regarding their operations, policies, or practices.

On July 30, 2026, the Board appointed Daniel Gish, 42, to serve as an independent trustee of the Company, effective immediately. Mr. Gish will also serve as a member of the Nominating and Governance Committee and the Audit Committee of the Board. In connection with Mr. Kasell's resignation, Steven Bossi was appointed to serve as Chairman of the Audit Committee of the Board, effective immediately.

Mr. Gish was most recently a Portfolio Manager at Marshall Wace, a global investment management firm, where he managed the firm's long/short investment grade credit strategy from 2024 to 2026. Prior to Marshall Wace, Mr. Gish served as a Portfolio Manager at Verition Fund Management LLC. Prior to Verition, Mr. Gish was an Executive Director at UBS AG. Mr. Gish earned a B.A. in Economics from Middlebury College in 2005.

Mr. Gish (i) was not appointed as a trustee of the Board pursuant to any arrangement or understanding with any other person; (ii) does not have a family relationship with any of the Company's trustees or other executive officers; (iii) has not engaged, since the beginning of the Company's last fiscal year, nor proposes to engage, in any transaction in which the Company was or is a participant; and (iv) has not entered into, nor expects to enter into, any material plan, contract, arrangement, grant or award in connection with his appointment as a trustee of the Board.