Blackstone Secured Lending COO steps down

Blackstone Secured Lending Fund reported that its Chief Operating Officer, Katherine Rubenstein, left her role on June 15, 2026 to pursue other opportunities.

Rhea-AI Filing Summary

Blackstone Secured Lending Fund reported that its Chief Operating Officer, Katherine Rubenstein, left her role on June 15, 2026 to pursue other opportunities. The company stated that her departure was not due to any disagreement regarding Blackstone or the fund’s operations, policies or practices.

8-K Event Classification

Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers

1 item

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers Governance

Key personnel changes including departures, elections, or appointments of directors and executive officers.

Key Figures

COO departure date: June 15, 2026 8-K form item: Item 5.02 Trading symbol: BXSL

3 metrics

COO departure date June 15, 2026 Effective date of Katherine Rubenstein’s departure

8-K form item Item 5.02 Departure of Certain Officers disclosure

Trading symbol BXSL Common Shares of Beneficial Interest on NYSE

Key Terms

Item 5.02, Emerging growth company, Common Shares of Beneficial Interest, Section 13 or 15(d) of the Securities Exchange Act of 1934

4 terms

Item 5.02 regulatory

"Item 5.02 — Departure of Certain Officers."

Emerging growth company regulatory

"Emerging growth company"

An emerging growth company is a recently public or smaller public firm that qualifies for temporary, lighter regulatory and disclosure rules to reduce the cost and effort of being public. For investors, it means the company may provide less historical financial detail and face fewer reporting requirements than larger firms, so it can grow more quickly but also carries higher uncertainty—like buying a promising early-stage product with fewer user reviews.

Common Shares of Beneficial Interest financial

"Common Shares of Beneficial Interest, $0.001 par value per share"

Common Shares of Beneficial Interest are units that represent ownership in a company or organization, like owning a piece of a pie. They give investors voting rights and a chance to share in profits, making them important for those looking to invest and have a say in how the organization is run.

Section 13 or 15(d) of the Securities Exchange Act of 1934 regulatory

"Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Blackstone Secured Lending Fund (BXSL) disclose in this 8-K?

Blackstone Secured Lending Fund disclosed that its Chief Operating Officer, Katherine Rubenstein, left her role on June 15, 2026. The company noted her departure was not related to disagreements over Blackstone or the fund’s operations, policies, or practices.

When did BXSL COO Katherine Rubenstein leave Blackstone Secured Lending Fund?

Katherine Rubenstein left her role as Chief Operating Officer on June 15, 2026. This date is specifically mentioned as the effective departure date in the company’s current report filed under Item 5.02, covering officer departures.

Did BXSL report any disagreement linked to the COO’s departure?

No, the company stated that Katherine Rubenstein’s departure was not the result of any disagreement. It specifically referenced no disagreements involving Blackstone or the fund’s operations, policies, or practices in connection with her leaving the COO role.

What reason did Blackstone Secured Lending Fund give for the COO change?

The company said Katherine Rubenstein departed as Chief Operating Officer to pursue other opportunities. It also expressed gratitude for her contributions to the fund and extended best wishes for her next chapter, without indicating operational disputes or conflicts.

Which executive signed the BXSL 8-K about the COO’s departure?

The report was signed on behalf of Blackstone Secured Lending Fund by Lucie Enns. She is identified in the document as the fund’s Chief Legal Officer and Secretary, acting as the authorized signatory for this current report filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/18/2026 - 04:05 PM Learn about SEC filing dates

false 0001736035 0001736035 2026-06-15 2026-06-15

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): June 15, 2026

______________________

Blackstone Secured Lending Fund
(Exact name of registrant as specified in its charter)

______________________

Delaware		814-01299		82-7020632
(State or other jurisdiction of incorporation)		(Commission File Number)		(I.R.S. Employer Identification No.)

345 Park Avenue
New York, New York 10154
(Address of principal executive offices, including zip code)

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

N/A
(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:

☐		Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐		Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐		Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐		Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Shares of Beneficial Interest, $0.001 par value per share		BXSL		New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2):

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. ☐

Item 5.02 — Departure of Certain Officers.

On June 15, 2026, Katherine Rubenstein departed her role as Blackstone Secured Lending Fund’s (the “Fund”) Chief Operating Officer to pursue other opportunities. Her departure was not the result of any disagreement relating to Blackstone or the Fund’s operations, policies or practices. Blackstone Credit & Insurance is grateful for Ms. Rubenstein’s contributions to the Fund and wishes her the very best in her next chapter.

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.

		BLACKSTONE SECURED LENDING FUND
Date: June 18, 2026		By:		/s/ Lucie Enns
		Name:		Lucie Enns
		Title:		Chief Legal Officer and Secretary

Filing Exhibits & Attachments

3 documents

Other Documents

• EX-101 XBRL SCHEMA FILE 1.9 KB
• EX-101 XBRL LABEL FILE 17.6 KB
• EX-101 XBRL PRESENTATION FILE 11.7 KB