Peakstone Realty Trust (PKST) COO/CLO reports RSU tax share withholding

Rhea-AI Filing Summary

Peakstone Realty Trust's chief operating and legal officer, Nina Momtazee Sitzer, reported a routine share withholding transaction related to equity compensation. On December 31, 2025, the company withheld 11,363 common shares at a price of $14.35 per share to cover tax obligations triggered by the delivery of vested restricted share units. After this transaction, Sitzer beneficially owned 135,738 common shares directly.

The withheld shares relate to the vesting and delivery of common shares underlying 25,649 previously reported time-based restricted share units that were granted on March 23, 2023 and April 1, 2024. The filing is administrative in nature and reflects tax settlement mechanics rather than an open-market purchase or sale.

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

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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^*

Sitzer Nina Momtazee

(Last) (First) (Middle)

1520 E. GRAND AVE

(Street)

EL SEGUNDO CA 90245

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Peakstone Realty Trust [ PKST ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
12/31/2025

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

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

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

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
Common Stock	12/31/2025		F(1)		11,363	D	$14.35	135,738	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 common shares withheld by Issuer to satisfy tax withholding obligations in connection with the delivery, on December 31, 2025, of common shares underlying 25,649 previously reported, time-based restricted share units granted to Reporting Person on March 23, 2023 and April 1, 2024.

	/s/ Nina Momtazee Sitzer	01/02/2026
	** 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).
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FAQ

What insider transaction did Peakstone Realty Trust (PKST) report in this Form 4?

The filing reports that officer Nina Momtazee Sitzer had 11,363 common shares of Peakstone Realty Trust withheld by the company on December 31, 2025 to satisfy tax withholding obligations linked to vested restricted share units.

Who is the reporting person in Peakstone Realty Trust (PKST)'s latest Form 4?

The reporting person is Nina Momtazee Sitzer, who serves as COO and CLO of Peakstone Realty Trust.

How many Peakstone Realty Trust (PKST) shares does the insider own after the reported transaction?

Following the tax withholding transaction, Nina Momtazee Sitzer beneficially owned 135,738 Peakstone Realty Trust common shares directly.

What was the price used for the withheld Peakstone Realty Trust (PKST) shares?

The 11,363 common shares withheld to cover taxes were valued at a price of $14.35 per share.

What equity awards triggered the share withholding for Peakstone Realty Trust (PKST)?

The withholding relates to the delivery, on December 31, 2025, of common shares underlying 25,649 time-based restricted share units that were previously granted to Nina Momtazee Sitzer on March 23, 2023 and April 1, 2024.

Was this Peakstone Realty Trust (PKST) insider transaction an open-market trade?

No. The filing explains that the 11,363 shares were withheld by the issuer to satisfy tax withholding obligations associated with vesting restricted share units, rather than an open-market purchase or sale.