Company: BXSL
Filing Date: 2025-10-08
Form Type: 424B2
Source: 0001213900-25-097397
Chunk: 174

Company: Blackstone Secured Lending Fund
Filing Date: 2025-10-08
Form: 424B2
Chunk 174
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 on May7, 2025. •our Current Reports on Form 8 -K(other than information furnished rather than filed) filed with the SEC on January21, 2025and March4, 2025. •the description of our common shares referenced in our Registration Statement on Form 8 -A(No. 001 -40966), as filed with the SEC on October26, 2021, including any amendment or report filed for the purpose of updating such description prior to the termination of the offering of the common shares registered hereby. See “ Available Information” for information on how to obtain a copy of these filings. 146

$500,000,000 Blackstone Secured Lending Fund 5.125% Notes due 2031 ___________________________ PROSPECTUS SUPPLEMENT ___________________________ Joint Book-Running Managers

| Citigroup | Deutsche Bank Securities | Morgan Stanley | SMBC Nikko | Truist Securities |

| MUFG |

| Barclays | Goldman Sachs & Co. LLC | J.P. Morgan | RBC Capital Markets | Wells Fargo Securities |

| BNP PARIBAS | BofA Securities | ING | TD Securities | US Bancorp |

| Credit Agricole CIB | HSBC | Mizuho | Regions Securities LLC | SOCIETE GENERALE |

Co -Managers Blackstone

| BNY Capital Markets | CIBC Capital Markets | Fifth Third Securities | M&T Securities |

| Keefe, Bruyette & Woods 
 A Stifel Company        | Natixis | Raymond James |

| Academy Securities | CastleOak Securities, L.P. | Drexel Hamilton | R. Seelaus & Co., LLC |

October 6, 2025