What changed in this filing

/stocks — the workspaceLOADING

Item 5. Other Information

2026-07-30 compared with 2026-04-29 · 37 added, 37 removed, 34 unchanged (69% of the section changed)

OTHER INFORMATION

Rule 10b5-1 Trading Arrangements

During the three months ended March 31, 2026 , two of our officers adopted a “Rule 10b5-1 trading arrangement,” as

defined in Item 408(c) of Regulation S-K, each of which is intended to satisfy the affirmative defense of Rule 10b5-1(c)

under the Exchange Act.

Marcin Urbaszek , our Chief Financial Officer , adopted a Rule 10b5-1 sales plan on February 27,

2026 that provides for the automatic sale of shares of class A common stock in order to satisfy tax withholding obligations

arising from vesting of an aggregate of 15,337 shares of restricted stock granted on December 15, 2025 , held by Mr.

The number of shares to be sold under the plan is unknown, as the number of shares will vary based on the

extent to which vesting conditions are satisfied and the market price of our class A common stock at the time of vesting.

Urbaszek’s Rule 10b5-1 sales plan will expire on December 31, 2028 , subject to the plan’s earlier expiration or

completion in accordance with its terms.

Austin Peña , our President , adopted a Rule 10b5-1 sales plan on March 26,

2026 that provides for the automatic sale of shares of class A common stock in order to satisfy tax withholding obligations

arising from vesting of an aggregate 36,843 shares of restricted stock granted on December 15, 2025 , held by Mr.

The number of shares to be sold under the plan is unknown, as the number of shares will vary based on the extent to which

vesting conditions are satisfied and the market price of our class A common stock at the time of vesting.

10b5-1 sales plan will expire on December 31, 2028 , subject to the plan’s earlier expiration or completion in accordance

with its terms.

Fourteenth Amendment to Term Loan Credit Agreement, dated as of January 14, 2026, by and among

Blackstone Mortgage Trust, Inc., the subsidiary guarantors party thereto, each lender party thereto and

JPMorgan Chase Bank, N.A., as administrative agent.

Second Amendment to Guaranty, dated as of February 27, 2026, by and between Blackstone Mortgage Trust,

Inc, Parlex 3A USD IE Issuer Designated Activity Company, Parlex 3A GBP IE Issuer Designated Activity

Company, Parlex 3A EUR IE Issuer Designated Activity Company, and Parlex 3A SEK IE Issuer Designated

Activity Company , Perpetual Corporate Trust Limited As Trustee of the Parlex 2022-1 Issuer Trust, Barclays

Bank PLC, Silver Holdco I, LLC and Silver Holdco II, LLC, 345-50 Partners, LLC, 345-40 Partners, LLC,

345-2 Partners, LLC, 42-16 Partners, LLC, and U.S.

Bank Trustees Limited

First Amendment to Amended and Restated Limited Guaranty, dated as of February 24, 2026, made by

Blackstone Mortgage Trust, Inc.

in favor of Citibank, N.A.

Indenture, dated May 19, 2026, among the Company, the Guarantors and The Bank of New York Mellon

Trust Company, N.A., as trustee and collateral agent (filed as Exhibit 4.1 to the Registrant’s Current

Report on Form 8-K (File No.

1-14788) filed on May 19, 2026 and incorporated herein by reference)

Form of 6.250% Senior Secured Notes due 2031 (included as Exhibit A to Exhibit 4.1).

Pledge and Security Agreement, dated as of May 19, 2026, by and among Blackstone Mortgage Trust, Inc.,

the other grantors from time to time party thereto and The Bank of New York Mellon Trust Company,

N.A., as collateral agent (filed as Exhibit 4.3 to the Registrant’s Current Report on Form 8-K (File No.

1-14788) filed on May 19, 2026 and incorporated herein by reference).

First Lien Intercreditor Agreement, dated as of October 5, 2021, by and among Blackstone Mortgage

Trust, Inc., JPMorgan Chase Bank, N.A., as agent under the Term Loan Credit Agreement, and The Bank

of New York Mellon Trust Company, N.A., as trustee and notes collateral agent (filed as Exhibit 4.4 to the

Current Report on Form 8-K (File No.

1-14788) filed on October 5, 2021 and incorporated herein by

2 to First Lien Intercreditor Agreement, dated as of May 19, 2026, by and among Blackstone

Mortgage Trust, Inc., the grantors party thereto and the other parties thereto (filed as Exhibit 4.5 to the

Registrant’s Current Report on Form 8-K (File No.

1-14788) filed on May 19, 2026 and incorporated

herein by reference).

Eighth Amendment to Master Repurchase Agreement, dated as of May 28, 2026, by and among Parlex 3A

USD IE Issuer Designated Activity Company, Parlex 3A GBP IE Issuer Designated Activity Company,

Parlex 3A EUR IE Issuer Designated Activity Company, Parlex 3A SEK IE Issuer Designated Activity

Company, Perpetual Corporate Trust Limited as Trustee of the Parlex 2022-1 Issuer Trust, Parlex 3A

FINCO, LLC, Barclays Bank PLC, Parlex 3A Finco, LLC, Parlex 3A UK Finco, LLC, Parlex 3A EUR

Finco, LLC, Parlex 3A SEK Finco, LLC, Silver Fin Sub TC PTY LTD, and Gloss Finco 1, LLC, and

Parlex 3A CAD Finco, LLC

Amendment No.

3 to Guarantee Agreement, dated as of April 13, 2026, between Blackstone Mortgage

and Wells Fargo Bank, National Association and acknowledged and agreed by Parlex 5 Finco,

LLC and 42-16 Partners, LLC

Certification of Chief Executive Officer, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of

1 unchanged sentence

Certification of Chief Executive Officer, pursuant to 18 U.S.C.

Section 1350, as adopted pursuant to Section

906 of the Sarbanes-Oxley Act of 2002

Section 1350, as adopted pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

Certification of Chief Financial Officer, pursuant to 18 U.S.C.

Section 1350, as adopted pursuant to Section

906 of the Sarbanes-Oxley Act of 2002

Section 1350, as adopted pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

XBRL Instance Document – the instance document does not appear in the interactive data file because its

6 unchanged sentences

Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

* Filed herewith.

+ This exhibit shall not be deemed “filed” for purposes of Section 18 of the Exchange Act or otherwise subject to the

11 unchanged sentences

BLACKSTONE MORTGAGE TRUST, INC.

April 29, 2026

July 30, 2026

/s/ Timothy S.

1 unchanged sentence

(Principal Executive Officer)

April 29, 2026

July 30, 2026

/s/ Marcin Urbaszek

4 unchanged sentences

Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.

What changed 10-Q

Item 5. Other Information