CEO of Seaport Entertainment (SEG) uses 2,726 shares for taxes

Rhea-AI Filing Summary

Seaport Entertainment Group Inc. reported that Chief Executive Officer Matthew Morris Partridge had 2,726 shares of common stock withheld by the company on March 6, 2026 to cover tax liabilities tied to the vesting of equity awarded under its 2024 Equity Incentive Plan.

These shares were treated as a tax-withholding disposition at $21.64 per share, and Partridge now directly holds 120,533 shares of Seaport Entertainment Group common stock following the transaction.

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^*

PARTRIDGE MATTHEW MORRIS

(Last) (First) (Middle)

199 WATER STREET

28TH FLOOR

(Street)

NEW YORK NY 10038

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Seaport Entertainment Group Inc. [ SEG ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/06/2026

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	03/06/2026		F(1)		2,726	D	$21.64	120,533	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. On March 6, 2026, Seaport Entertainment Group Inc. (the "Issuer") withheld 2,726 shares of common stock of the Issuer from the Reporting Person for payment of the tax liability incident to the vesting of shares of common stock granted by the Issuer pursuant to the terms of the Issuer's 2024 Equity Incentive Plan.

	/s/ Lucy Fato, Attorney-in-Fact	03/09/2026
	** Signature of Reporting Person	Date
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FAQ

What insider transaction did Seaport Entertainment Group (SEG) disclose for its CEO?

Seaport Entertainment Group disclosed that CEO Matthew Morris Partridge had 2,726 common shares withheld on March 6, 2026. The company used these shares to satisfy tax liabilities from vesting equity awards under its 2024 Equity Incentive Plan.

How many Seaport Entertainment Group (SEG) shares were withheld for CEO tax obligations?

A total of 2,726 Seaport Entertainment Group common shares were withheld from CEO Matthew Morris Partridge. The shares were applied toward his tax liability created by the vesting of stock granted under the company’s 2024 Equity Incentive Plan.

At what price were the withheld Seaport Entertainment Group (SEG) shares valued?

The withheld Seaport Entertainment Group shares were valued at $21.64 per share. This price was applied to 2,726 common shares used to cover the CEO’s tax liability associated with the vesting of previously granted equity awards.

What is CEO Matthew Partridge’s Seaport Entertainment Group (SEG) shareholding after the tax withholding?

After the tax-withholding transaction, CEO Matthew Morris Partridge directly holds 120,533 Seaport Entertainment Group common shares. This figure reflects his direct ownership following the 2,726-share withholding to cover taxes on vested stock.

What triggered the Seaport Entertainment Group (SEG) tax-withholding share disposition?

The disposition was triggered by the vesting of Seaport Entertainment Group common stock previously granted to CEO Matthew Morris Partridge. The issuer withheld 2,726 shares to satisfy tax liabilities under its 2024 Equity Incentive Plan on March 6, 2026.

How is the Seaport Entertainment Group (SEG) CEO’s Form 4 transaction classified?

The CEO’s Form 4 transaction is classified as a tax-withholding disposition coded "F." This represents payment of tax liability by delivering 2,726 Seaport Entertainment Group common shares rather than an open-market purchase or sale.