Sec Form 4 Filing - Goodwin Scott Kreitler @ Diameter Dynamic Credit Fund - 2026-07-14

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Goodwin Scott Kreitler 2. Issuer Name and Ticker or Trading Symbol Diameter Dynamic Credit Fund [ NONE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) X __ Other (specify below) Co-President/Portfolio Manager (Last) (First) (Middle) C/O DIAMETER DYNAMIC CREDIT FUND, 50 HUDSON YARDS, SUITE 6600A 3. Date of Earliest Transaction (MM/DD/YY) 07/14/2026 (Street) NEW YORK, NY10001 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class I Common Shares 07/14/2026 P 124,254.473 A $ 10.06 124,254.473 D Class I Common Shares 10,000 I By: Diameter DCF Advisor LLC ( 1 ) Class I Common Shares 569.7 I By: Diameter Associates LLC ( 2 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Goodwin Scott Kreitler C/O DIAMETER DYNAMIC CREDIT FUND 50 HUDSON YARDS, SUITE 6600A NEW YORK, NY10001 X Co-President Portfolio Manager Signatures /s/ Michael Cohn, Attorney-in-Fact 07/16/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Diameter DCF Advisor LLC directly holds the 10,000 Class I Common Shares (the "Common Shares"). Diameter DCF Advisor LLC is a wholly-owned subsidiary of Diameter Capital Partners LP. By virtue of Mr. Goodwin's beneficial ownership of Diameter Capital Partners LP, Mr. Goodwin may be deemed to beneficially own the Common Shares directly held by Diameter DCF Advisor LLC. Mr. Goodwin disclaims beneficial ownership of such Common Shares directly held by Diameter DCF Advisor LLC except to the extent of his pecuniary interest therein. ( 2 )Diameter Associates LLC directly holds the 569.70 Common Shares. Mr. Goodwin may be deemed to beneficially own the Common Shares directly held by Diameter Associates LLC. Mr. Goodwin disclaims beneficial ownership of such Common Shares directly held by Diameter Associates LLC except to the extent of his pecuniary interest therein. The receipt of such shares of Common Stock was exempt from reporting pursuant to Rule 16a-9 of the Exchange Act.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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