Blackstone Mortgage Trust director acquires 6,428 shares

The dividend-linked units were calculated using a $0.47 per-share dividend and convert into common stock one-for-one.

Rhea-AI Filing Summary

Lynne B. Sagalyn, a director of Blackstone Mortgage Trust, Inc. (BXMT), acquired 6,428 shares of Class A common stock on October 15, 2026, at a reported $10.78 per share. The acquisition reflects Class A Common Stock Units received in lieu of dividends on units she owned; those units convert into shares one-for-one. Her reported direct holdings after the transaction were 173,067 shares.

Insider Trade Summary

Grant/Award: 6,428 shares

Grant/Award 1 txn

Insider SAGALYN LYNNE B

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock F1	6,428	$10.78	$69K

Holdings After Transaction: Class A Common Stock — 173,067 shares (Direct)

Footnotes (1)

1. F1. Represents Class A Common Stock Units in lieu of dividends payable on Class A Common Stock Units owned by the Reporting Person, which convert to shares of Class A Common Stock on a one-for-one basis. The number of Class A Common Stock Units was calculated by dividing (1) the product of the number of Class A Common Stock Units owned by the Reporting Person and the $0.47 per share dollar amount of the Class A Common Stock dividend paid by the Company on October 15, 2026 by (2) the closing price of the Company's Class A Common Stock on October 15, 2026.

Key Figures

Shares acquired: 6,428 shares Reported price per share: $10.78 per share Direct holdings after transaction: 173,067 shares +1 more

4 metrics

Shares acquired 6,428 shares Class A common stock acquired October 15, 2026

Reported price per share $10.78 per share Class A common stock acquisition on October 15, 2026

Direct holdings after transaction 173,067 shares Lynne B. Sagalyn's reported holdings

Class A Common Stock dividend $0.47 per share Dividend paid October 15, 2026

Key Terms

Class A Common Stock Units, in lieu of dividends, one-for-one basis

3 terms

Class A Common Stock Units financial

"Class A Common Stock Units in lieu of dividends"

in lieu of dividends financial

"owned by the Reporting Person, which convert to shares"

one-for-one basis financial

"convert to shares of Class A Common Stock on a one-for-one basis"

FAQ

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

How were Lynne B. Sagalyn's BXMT dividend-related shares calculated?

The number of Class A Common Stock Units was calculated by multiplying the units she owned by the $0.47 per-share dividend paid on October 15, 2026, then dividing by the closing price of the company's Class A common stock that day. The units convert into shares one-for-one.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/16/2026 - 05:46 PM EDT Accepted by SEC EDGAR 10/16/2026 - 05:46 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

SAGALYN LYNNE B

(Last) (First) (Middle)

C/O BLACKSTONE MORTGAGE TRUST

345 PARK AVENUE

(Street)

NEW YORK NEW YORK 10154

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
BLACKSTONE MORTGAGE TRUST, INC. [ BXMT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	10/15/2026		A		6,428(1)	A	$10.78	173,067	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents Class A Common Stock Units in lieu of dividends payable on Class A Common Stock Units owned by the Reporting Person, which convert to shares of Class A Common Stock on a one-for-one basis. The number of Class A Common Stock Units was calculated by dividing (1) the product of the number of Class A Common Stock Units owned by the Reporting Person and the $0.47 per share dollar amount of the Class A Common Stock dividend paid by the Company on October 15, 2026 by (2) the closing price of the Company's Class A Common Stock on October 15, 2026.

Remarks:

	/s/ Marcin Urbaszek, Attorney-In-Fact	10/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)