---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-129150"
form_type: "8-K"
ticker: null
cik: "0001916099"
company_name: "Diameter Credit Co"
filed_at: "2026-03-27T23:59:59+00:00"
generated_at: "2026-05-15T08:42:32.486336+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Diameter Credit closes $399.9M CLO with AAA/AA rated notes; retains all subordinated notes

## Summary
- Issued $232M Class A-1 (SOFR+1.49%), $16M Class A-2 (SOFR+1.70%), and $24M Class B (SOFR+1.85%) secured notes due 2038.
- Issued $127.9M subordinated notes due 2126; Diameter retained 100% of sub notes as retention holder.
- Proceeds used to purchase first-lien commercial loans from Diameter under master loan sale agreement.
- Collateral management fee set at 0.0% per annum for Diameter as collateral manager.
- Secured notes rated AAA(sf)/AA(sf) by S&P; securities not registered under Securities Act.

## SEC filing metadata
- accession: 0001193125-26-129150
- form_type: 8-K
- cik: 0001916099
- company_name: Diameter Credit Co
- filed_at: 2026-03-27T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1916099/000119312526129150/0001193125-26-129150-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1916099/000119312526129150/ck0001916099-20260324.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-129150
- JSON: https://secwatch.observer/filing/0001193125-26-129150.json
- Plain text: https://secwatch.observer/filing/0001193125-26-129150.txt

## Source-grounded claims
- claim_id: 0c652397e9e7e9bb2b9eef6e63c988bdbc6a8087
  claim: Diameter Credit Co incurred senior notes of $232,000,000 with Morgan Stanley & Co. LLC at SOFR plus 1.49% maturing January 15, 2038.
  evidence_excerpt: $232,000,000 of AAA(sf) Class A-1 Senior Secured Floating Rate Notes due 2038, which bear interest at the three-month secured overnight financing rate published by the Federal Reserve Bank of New York (“SOFR”) plus 1.49%
  evidence_url: https://www.sec.gov/Archives/edgar/data/1916099/000119312526129150/0001193125-26-129150-index.htm
- claim_id: 8cbb10eac1d96002fcb821b64d73c0b3a538e551
  claim: Diameter Credit Co incurred senior notes of $24,000,000 with Morgan Stanley & Co. LLC at SOFR plus 1.85% maturing January 15, 2038.
  evidence_excerpt: $24,000,000 of AA(sf) Class B Senior Secured Floating Rate Notes due 2038, which bear interest at the three-month SOFR plus 1.85%
  evidence_url: https://www.sec.gov/Archives/edgar/data/1916099/000119312526129150/0001193125-26-129150-index.htm
- claim_id: b6e7357c9d27619b97f8f93355cd0ff269654545
  claim: Diameter Credit Co incurred senior notes of $16,000,000 with Morgan Stanley & Co. LLC at SOFR plus 1.70% maturing January 15, 2038.
  evidence_excerpt: $16,000,000 of AAA(sf) Class A-2 Senior Secured Floating Rate Notes due 2038, which bear interest at the three-month SOFR plus 1.70%
  evidence_url: https://www.sec.gov/Archives/edgar/data/1916099/000119312526129150/0001193125-26-129150-index.htm
- claim_id: cd7cea5915af09adbfa819f1a1fd5ab867d894a2
  claim: Diameter Credit Co incurred senior notes of $127,900,000 maturing January 15, 2126.
  evidence_excerpt: $127,900,000 of Subordinated Notes due 2126 (the “Subordinated Notes”), which do not bear interest
  evidence_url: https://www.sec.gov/Archives/edgar/data/1916099/000119312526129150/0001193125-26-129150-index.htm
- claim_id: 239628184254144659073a3846f67468486693ad
  claim: Diameter Credit Co entered into CLO Purchase Agreement with Morgan Stanley & Co. LLC, as the initial purchaser (effective 2026-03-24).
  evidence_excerpt: On the Closing Date and in connection with the 2026 Debt Securitization, Diameter Capital PC CLO 1 LLC (the “CLO Issuer”), an indirect, wholly-owned, consolidated subsidiary of the Company, entered into a purchase agreement (the “CLO Purchase Agreement”) with Morgan Stanley & Co. LLC, as the initial purchaser (the “Initial Purchaser”), pursuant to which the Initial Purchaser agreed to place certain of the notes issued by the CLO Issuer as part of the 2026 Debt Securitization pursuant to an indenture by and between the CLO Issuer and Western Alliance Trust Company, N.A., as trustee (the “CLO Indenture”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1916099/000119312526129150/0001193125-26-129150-index.htm
- claim_id: b9d7fccbb3fd63cfa30e6bc719c0d9bb5eb464d6
  claim: Diameter Credit Co entered into CLO Indenture with Western Alliance Trust Company, N.A., as trustee (effective 2026-03-24).
  evidence_excerpt: The Secured Notes are the secured obligation of the CLO Issuer, the Subordinated Notes are the unsecured obligations of the CLO Issuer, and the CLO Indenture governing the Notes include customary covenants and events of default.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1916099/000119312526129150/0001193125-26-129150-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.