Blackstone Secured Lending Fund Form 8-K - Debt Financing

On May 21, 2026, Blackstone Secured Lending Fund (the "Fund") entered into an Eleventh Supplemental Indenture with U.S. Bank Trust Company, National Association, as Trustee. This indenture relates to the Fund's $650,000,000 in aggregate principal amount of 5.900% notes due 2031. The notes mature on May 21, 2031, and are redeemable at the Fund's option. Interest is payable at 5.900% annually, semi-annually. The notes are general unsecured obligations of the Fund, ranking senior to subordinated debt, pari passu with unsubordinated unsecured debt, junior to secured debt, and structurally junior to subsidiary debt. The indenture includes covenants requiring compliance with asset coverage requirements and provision of financial information if the Fund is no longer subject to Exchange Act reporting. A "change of control repurchase event" will generally require the Fund to repurchase the notes at par plus accrued interest. The notes were offered and sold pursuant to a Registration Statement on Form N-2ASR (File No. 333-288640) and related filings, with the transaction closing on May 21, 2026.