Blackstone Secured Lending Fund announced the closing of a $500 million debt offering of 5.125% notes due 2031. The notes were issued pursuant to a Ninth Supplemental Indenture with U.S. Bank Trust Company, National Association, dated October 14, 2025. The notes mature on January 31, 2031, and bear interest at a rate of 5.125% per year, payable semi-annually on January 31 and July 31, beginning January 31, 2026. The notes are general unsecured obligations of the Fund and may be redeemed in whole or in part at the Fund's option at the redemption prices set forth in the Indenture. The offering was made under the Registration Statement on Form N-2 (File No. 333-288640), with the preliminary prospectus supplement and pricing term sheet filed with the SEC on October 6, 2025.