Company: BXSL
Filing Date: 2025-10-08
Form Type: 424B2
Source: 0001213900-25-097397
Chunk: 50

Company: Blackstone Secured Lending Fund
Filing Date: 2025-10-08
Form: 424B2
Chunk 50
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           |   1,250,000 |           |
| Total                                 |     | $           | 500,000,000 |           |

Subject to the terms and conditions set forth in the underwriting agreement, the underwriters have agreed, severally and not jointly, to purchase all of the Notes sold under the underwriting agreement if any of these Notes are purchased. If an underwriter defaults, the underwriting agreement provides that the purchase commitments of the nondefaulting underwriters may be increased or the underwriting agreement may be terminated. We have agreed to indemnify the underwriters against certain liabilities, including liabilities under the Securities Act of 1933, as amended (the “Securities Act”), or to contribute to payments the underwriters may be required to make in respect of those liabilities.

S-34

The underwriters are offering the Notes, subject to prior sale, when, as and if issued to and accepted by them, subject to approval of legal matters by their counsel, including the validity of the Notes, and other conditions contained in the underwriting agreement, such as the receipt by the underwriters of officers’ certificates and legal opinions. The underwriters reserve the right to withdraw, cancel or modify offers to the public and to reject orders in whole or in part. Discount The following table shows the per Note and total underwriting discount that we are to pay to the underwriters in connection with this offering.

|                                    |     |         |     | Per Note |             | Total |
|:-----------------------------------|:----|:--------|:----|:---------|------------:|:------|
| Public offering price              |     | 99.218% |     | $        | 496,090,000 |       |
| Underwriting discount (sales load) |     | 0.700%  |     | $        |   3,500,000 |       |
| Proceeds to us, before expenses    |     | 98.518% |     | $        | 492,590,000 |       |

The underwriters propose to offer some of the Notes to the public at the public offering price set forth on the cover page of this prospectus supplement, and some of the Notes to certain other Financial Industry Regulatory Authority, or FINRA, members at the public offering price less a concession not in excess of 0.400% of the aggregate principal amount of the Notes. The underwriters may allow, and the dealers may reallow, a discount not in excess