Peakstone Realty Trust COO reports 12,134-share tax withholding

Peakstone Realty Trust reported an insider share withholding by its COO and CLO, Nina Momtazee Sitzer.

Rhea-AI Filing Summary

Peakstone Realty Trust reported an insider share withholding by its COO and CLO, Nina Momtazee Sitzer. On December 15, 2025, the company withheld 12,134 common shares at $14.22 per share to cover tax withholding obligations tied to vested equity awards. After this transaction, she directly owned 147,101 common shares of Peakstone Realty Trust.

The withholding related to the delivery of common shares underlying 27,390 time-based restricted share units that had been granted to her on March 7, 2025 and were previously reported. This event reflects a tax-settlement on equity compensation rather than an open-market purchase or sale.

Insider Trade Summary

Exercise Price or Tax Liability: 12,134 shares

Exercise Price or Tax Liability 1 txn

Insider Sitzer Nina Momtazee

Role COO and CLO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	12,134	$14.22	$173K

Holdings After Transaction: Common Stock — 147,101 shares (Direct)

Footnotes (1)

1. F1. Represents common shares withheld by Issuer to satisfy tax withholding obligations in connection with the delivery, on December 15, 2025, of common shares underlying 27,390 previously reported, time-based restricted share units granted to Reporting Person on March 7, 2025.

FAQ

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

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

The filing reports that COO and CLO Nina Momtazee Sitzer had 12,134 Peakstone Realty Trust common shares withheld by the issuer to satisfy tax withholding obligations.

How many PKST shares does Nina Momtazee Sitzer own after the reported transaction?

Following the reported transaction, Nina Momtazee Sitzer beneficially owns 147,101 common shares of Peakstone Realty Trust, held directly.

At what price were the Peakstone Realty Trust shares withheld in this transaction?

The 12,134 common shares of Peakstone Realty Trust were withheld at a price of $14.22 per share.

What equity awards were involved in this PKST insider transaction?

The transaction is connected to the delivery of common shares underlying 27,390 previously reported, time-based restricted share units granted to Nina Momtazee Sitzer on March 7, 2025.

Why were PKST shares withheld from the COO and CLO in this filing?

The 12,134 common shares were withheld by Peakstone Realty Trust to satisfy tax withholding obligations arising from the delivery of shares underlying vested restricted share units.

When did the PKST restricted share units deliver and the withholding transaction occur?

The common shares underlying the restricted share units were delivered, and the withholding transaction occurred, on December 15, 2025.

What is Nina Momtazee Sitzer’s role at Peakstone Realty Trust?

Nina Momtazee Sitzer is an officer of Peakstone Realty Trust, serving as the company’s COO and CLO.

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

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Accepted by SEC EDGAR 12/17/2025 - 06:43 PM 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^*

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)
12/15/2025

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	12/15/2025		F(1)		12,134	D	$14.22	147,101	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 15, 2025, of common shares underlying 27,390 previously reported, time-based restricted share units granted to Reporting Person on March 7, 2025.

	/s/ Nina Momtazee Sitzer	12/17/2025
	** 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.