UNITED ~~STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON, D.C. 20549~~STATES

~~FORM~~SECURITIES ~~8-K~~AND EXCHANGE COMMISSION

~~CURRENT~~WASHINGTON, ~~REPORT~~D.C. 20549

~~Pursuant~~FORM ~~to Section 13 or 15(d) of the Securities Exchange Act of 1934~~8-K

~~Date~~CURRENT ~~of Report (Date of earliest event reported): October 03, 2025~~REPORT

~~Diameter~~Pursuant ~~Credit~~to ~~Company~~Section 13 or 15(d)

~~(Exact name~~ of ~~Registrant~~the asSecurities ~~Specified~~Exchange inAct ~~Its~~of ~~Charter)~~1934

Delaware	000-56624	88-1389797
(State or Other Jurisdictionof Incorporation)	(Commission File Number)	(IRS EmployerIdentification No.)
50 Hudson Yards, Suite 6600A
New York, New York		10001
(Address of Principal Executive Offices)		(Zip Code)

Date of Report (Date of earliest event reported): October 16, 2025

~~Registrant’s~~ ~~Telephone~~Diameter ~~Number,~~Credit ~~Including~~Company ~~Area Code: (212) 655-1419~~

(~~Former~~Exact ~~Name~~name orof ~~Former~~Registrant ~~Address,~~as ifspecified ~~Changed~~in ~~Since~~its ~~Last Report~~charter)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Delaware

000-56624

88-1389797

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

50 Hudson Yards, Suite 6600A

New York, NY

10001

(Address of principal executive offices)

(Zip Code)

~~☐Soliciting~~Registrant’s ~~material~~telephone ~~pursuant~~number, toincluding ~~Rule~~area ~~14a-12~~code: ~~under the Exchange Act~~ (17212) ~~CFR 240.14a~~655-~~12)~~1419

~~☐Pre-commencement~~Not ~~communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))~~Applicable

~~☐Pre-commencement~~(Former ~~communications~~name ~~pursuant~~or toformer ~~Rule~~address, ~~13e-4(c)~~if ~~under~~changed ~~the~~since ~~Exchange~~last ~~Act (17 CFR 240.13e-4(c~~report))

~~Securities~~Check ~~registered~~the ~~pursuant~~appropriate box below if the Form 8-K filing is intended to ~~Section~~simultaneously ~~12(b)~~satisfy the filing obligation of the ~~Act~~registrant under any of the following provisions:

~~Title~~☐ ofWritten ~~each~~communications ~~class~~pursuant ~~TradingSymbol(s)~~to ~~Name~~Rule of425 ~~each~~under ~~exchange~~the onSecurities ~~which~~Act ~~registered~~(17 ~~N/A~~CFR ~~N/A N/A~~230.425)

~~Indicate~~☐ bySoliciting ~~check~~material ~~mark~~pursuant ~~whether~~to ~~the registrant is an emerging growth company as defined in~~ Rule ~~405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b~~14a-212 ofunder the ~~Securities~~ Exchange Act of(17 ~~1934~~CFR (§ 240.~~12b~~14a-~~2 of this chapter~~12).

~~Emerging~~☐ ~~growth~~Pre-commencement ~~company~~communications ☒pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

If☐ anPre-commencement ~~emerging~~communications ~~growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided~~ pursuant to ~~Section~~Rule 1313e-4(ac) ofunder the Exchange Act. ☐(17 CFR 240.13e-4(c))

~~Item~~Securities ~~1.01~~registered ~~Entry~~pursuant ~~into~~to aSection 12(b) ~~Material~~of ~~Definitive~~the ~~Agreement.~~Act: None

OnTitle ~~October~~of 3,each ~~2025~~class TradingSymbol(~~the “Closing Date”~~s), ~~Diameter~~Name ~~Credit Company Holdings III LLC (“DCC Holdings”), a Delaware limited liability company and newly formed subsidiary~~ of ~~Diameter~~each ~~Credit~~exchange ~~Company~~on ~~(the~~which “Company”), entered into a Credit and Security Agreement (the “DCC Holdings III Secured Credit Facility”), with DCC Holdings, as borrower, the Company, as portfolio manager and as UK retention provider, the lenders from time to time party thereto, Barclays Bank PLC, as administrative agent, Citibank, N.A., as collateral agent and as securities intermediary, and Siepe, LLC, as collateral administrator.registered

~~The~~Indicate ~~maximum~~by ~~principal~~check ~~amount~~mark ofwhether the ~~DCC~~registrant ~~Holdings~~is ~~III~~an ~~Secured~~emerging ~~Credit~~growth ~~Facility~~company as ofdefined ~~the~~in ~~Closing~~Rule ~~Date~~405 ~~is comprised~~ of ~~(a) subject to~~ the ~~borrowing~~Securities ~~base,~~Act ~~which is determined on the basis~~ of ~~the~~1933 ~~value~~(§230.405 ~~and types~~ of ~~DCC~~this ~~Holdings’s assets from time to time, and satisfaction of certain conditions, including certain concentration limits, a revolving credit facility in the principal amount of $200 million and (b~~chapter) aor ~~term~~Rule ~~loan~~12b-2 ~~in the principal amount~~ of ~~$50 million, which can be drawn in multiple currencies subject to certain conditions; Amounts drawn under~~ the ~~DCC~~Securities ~~Holdings~~Exchange ~~III~~Act ~~Secured Credit Facility initially bear interest at Term SOFR plus a margin~~ of ~~2.05%;~~1934 ~~provided, that if the amount of each type of advance is less than the minimum utilization amount~~ (i§240.~~e.,~~12b-2 ~~(a)~~of ~~100%~~this ~~for term advances and (b~~chapter) ~~with respect to certain periods following the Closing Date, 25% to 68~~.75% for revolving advances), then interest shall accrue on the total minimum utilization amount. Term advances that are repaid may not be reborrowed. The revolving period terminates on the date that is three years from the Closing Date and all amounts outstanding under the DCC Holdings III Secured Credit Facility must be repaid by the date that is ten years after the Closing Date. The contractual maturity date of the DCC Holdings III Secured Credit Facility is October 3, 2035.

~~The~~Emerging ~~foregoing~~growth ~~description~~company of the DCC Holdings III Secured Credit Facility does not purport to be complete and is qualified in its entirety by reference to the full text of the DCC Holdings III Secured Credit Facility, filed as Exhibit 10.1 hereto and incorporated herein by reference.☒

~~Item~~If ~~9.01~~an ~~Financial~~emerging ~~Statements~~growth ~~and~~company, ~~Exhibits~~indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

~~(d)~~Item 5.02. ~~Exhibits:~~Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

ExhibitNumber	Description
10.1	Barclays Credit and Security Agreement
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

On October 16, 2025, Vishal Sheth, Chief Financial Officer of Diameter Credit Company (the “Company”), notified the Board of Trustees (the “Board”) of his intention to retire and step down from his position as Chief Financial Officer. Mr. Sheth’s final date of service has not yet been determined, and he and the Company are working together to ensure a smooth and orderly transition of his responsibilities.

~~SIGNATURES~~Mr. Sheth’s decision to step down is not the result of any disagreement with the Company, its investment adviser, or any of their affiliates regarding their operations, policies, or practices.

~~Pursuant~~SIGNATURE ~~to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.~~

			Diameter Credit Company
Date:	October 9, 2025	By:	/s/ Vishal Sheth
			Vishal Sheth, Chief Financial Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

DIAMETER CREDIT COMPANY

Date: October 21, 2025

/s/ Michael Cohn

Michael Cohn

General Counsel and Chief Compliance Officer

Filing Compare · Diameter Credit Co