UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to SECTION 13 OR 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 4, 2021

Blackstone Secured Lending Fund

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (212) 503-2100

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act: None

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b–2 of the Securities Exchange Act of 1934.

Emerging growth company   ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

On August 4, 2021, the board of trustees (the “Board”) of Blackstone Secured Lending Fund (the “Company”) appointed Katherine Rubenstein as Chief Operating Officer of the Company.

Ms. Rubenstein, born in 1978, is a Managing Director in Blackstone Alternative Credit Advisors LP (“Blackstone Credit”) and the Chief Operating Officer of the Company and of Blackstone Private Credit Fund. Since joining The Blackstone Group, Inc. (“Blackstone”) in 2015, Ms. Rubenstein created and led the GSO Advantage platform (now Blackstone Credit Advantage), which brings Blackstone’s broad set of capabilities to drive operational efficiencies and growth for Blackstone Credit’s portfolio companies. She subsequently created and led the Blackstone Advantage program, focusing on building networks and expanding access to resources for portfolio companies across Blackstone business units. Ms. Rubenstein is on the Blackstone Charitable Foundation Leadership Council and on the Board of Let’s Get Ready, a non-profit organization that provides low-income and first generation to college students support to gain admission to and graduate from college. Before joining Blackstone, Ms. Rubenstein originated senior secured loans and equipment finance opportunities in the industrial, consumer, and retail sectors for GE Capital and prior to that worked in brand management at World Kitchen. Ms. Rubenstein received an MBA from The Johnson Graduate School of Management at Cornell University, where she was a Roy H. Park Leadership Fellow, and an AB from Dartmouth College.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.