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Blackstone Secured Lending Fund

For the period ended Sep 24, 2026. Filed Jun 29, 2026.

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About this filing

What shareholders are asked to vote on at a company's meeting. It is where to find what directors and top executives are paid, and who owns the most shares.

Sep 24, 2026 · Filed Jun 29, 2026

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BXSL$24.09-0.3%Stored close · as of Nov 6, 2026
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE

SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐Preliminary Proxy Statement
☐Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☒Definitive Proxy Statement
☐Definitive Additional Materials
☐Soliciting Material Pursuant to §240.14a-12

Blackstone Secured Lending Fund

(Name of Registrant as Specified in Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

☒No fee required.
☐Fee paid previously with preliminary materials.
☐Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

345 Park Avenue

New York, New York 10154

June 29, 2026

Dear Shareholders:

You are cordially invited to attend the 2026 Annual Meeting of Shareholders (the “Meeting”) of Blackstone Secured Lending Fund (the “Company”), a Delaware statutory trust, to be held virtually on September 24, 2026, at 10:00 a.m., Eastern Time at the following website: www.virtualshareholdermeeting.com/BXSL2026. Holders of record of common shares of beneficial interest of the Company, par value $0.001 per share, at the close of business on June 26, 2026 are entitled to notice of, and to vote at, the Meeting or any adjournment or postponement thereof. Details of the business to be conducted at the Meeting are given in the accompanying Notice of Virtual 2026 Annual Meeting of Shareholders and proxy statement. The proxy statement and the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “Annual Report”) are being made available to shareholders on or about June 29, 2026. Your vote is very important to us.

The Board of Trustees of the Company (the “Board of Trustees”) unanimously recommends that you (i) vote “FOR” the election of the nominees (collectively, the “Nominees”) proposed by the Board of Trustees and described in the accompanying proxy statement and (ii) vote “FOR” the proposal to ratify the appointment of Deloitte & Touche LLP as the independent registered public accounting firm for the Company for the fiscal year ending December 31, 2026. You can vote for the Nominees and on the other matter virtually at the Meeting by following the instructions in the Notice of Internet Availability of Proxy Materials and this proxy statement. Voting by Internet, telephone or by mailing the proxy card in advance of the Meeting are other available options.

It is important that your shares be represented at the Meeting and voted in accordance with your wishes. Please follow the instructions on the Notice of Internet Availability of Proxy Materials and this proxy statement and authorize a proxy via the Internet or telephone to vote your shares. The Notice of Internet Availability of Proxy Materials includes instructions on how to request a hard copy of the proxy statement and proxy card for the Meeting free of charge, and you may also authorize your proxy by returning your proxy card to us after you request the hard copy materials. If you are the beneficial owner of your shares, you will need to follow the instructions provided by your broker, bank, trustee or nominee regarding how to instruct your broker, bank, trustee or nominee to vote your shares at the Meeting. Voting by proxy does not deprive you of your right to participate in the Meeting.

No matter how many or few shares you own, your vote and participation are very important to us.

Sincerely,

Brad Marshall

Trustee, Chairperson and Co-Chief Executive Officer

Jonathan Bock

Co-Chief Executive Officer

Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting of Shareholders to Be Held on September 24, 2026.

The accompanying proxy statement and the Annual Report are available at www.sec.gov and www.proxyvote.com.

345 Park Avenue

New York, New York 10154

NOTICE OF VIRTUAL 2026 ANNUAL MEETING OF SHAREHOLDERS

Online Meeting Only – No Physical Meeting Location

www.virtualshareholdermeeting.com/BXSL2026

September 24, 2026, 10:00 a.m., Eastern Time

June 29, 2026

To the Shareholders of Blackstone Secured Lending Fund:

The 2026 Annual Meeting of Shareholders (the “Meeting”) of Blackstone Secured Lending Fund (the “Company”), a Delaware statutory trust, will be conducted virtually, solely by the means of remote communication, on September 24, 2026, at 10:00 a.m., Eastern Time at the following website:

www.virtualshareholdermeeting.com/BXSL2026

At the Meeting, in addition to transacting such other business as may properly come before the Meeting and any adjournments or postponements thereof, shareholders will consider and vote on the following proposals:

1.Shareholders are being asked to elect two (2) trustees of the Company (each, a “Trustee,” and collectively, the “Trustees”), to hold office for the term indicated and until his or her successor shall have been elected and qualified; and
2.Shareholders are being asked to ratify the appointment of Deloitte & Touche LLP (“Deloitte”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026.

These proposals are discussed in greater detail in the accompanying proxy statement.

The Board of Trustees of the Company (the “Board of Trustees”) unanimously recommends that you (i) vote “FOR” the election of the nominees (collectively, the “Nominees”) proposed by the Board of Trustees and described in the accompanying proxy statement and (ii) vote “FOR” the proposal to ratify the appointment of Deloitte as the independent registered public accounting firm for the Company for the fiscal year ending December 31, 2026. You can vote for the Nominees and on the other matter virtually at the Meeting by following the instructions in the Notice of Internet Availability of Proxy Materials and this proxy statement. Voting by Internet, telephone or by mailing the proxy card in advance of the Meeting are other available options.

You have the right to receive notice of, and to vote at, the Meeting if you were a shareholder of record of common shares of beneficial interest of the Company, par value $0.001 per share, at the close of business on June 26, 2026. A list of these shareholders will be open for examination by any shareholder for any purpose germane to the Meeting for a period of 10 days prior to the Meeting at the Company’s principal executive offices at 345 Park Avenue, New York, New York 10154. If you received a Notice of Internet Availability of Proxy Materials by mail, you will not receive a printed copy of the proxy statement and proxy card unless you request them. Instead, the Notice of Internet Availability of Proxy Materials will instruct you as to how you may access and review the proxy statement, and vote your proxy, on the Internet.

Whether or not you plan to participate in the Meeting, we encourage you to vote your shares by following the instructions on the Notice of Internet Availability of Proxy Materials and this proxy statement.

We are not aware of any other business, or any other Nominees for election as Trustees, that may properly be brought before the Meeting.

By order of the Board of Trustees of Blackstone Secured Lending Fund

Lucie Enns

Chief Legal Officer and Secretary

New York, New York

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