Matthew Morris Partridge - 26 Feb 2026 Form 4 Insider Report for Seaport Entertainment Group Inc. (SEG)

Role: Chief Executive Officer, Director
Signature: /s/ Lucy Fato, Attorney-in-Fact
Issuer symbol: SEG
Transactions as of: 26 Feb 2026
Net transactions value: $0
Form type: 4
Filing time: 02 Mar 2026, 16:30:28 UTC
Previous filing: 19 Sep 2025
Next filing: 09 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
PARTRIDGE MATTHEW MORRIS	Chief Executive Officer, Director	199 WATER STREET, 28TH FLOOR, NEW YORK	/s/ Lucy Fato, Attorney-in-Fact	02 Mar 2026	0001663789

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SEG	Common Stock	Award	$0	+27,625	+29%	$0.000000	123,259	26 Feb 2026	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SEG	Non-Qualified Stock Option (Right to Buy)	Award	$0	+55,148		$0.000000	55,148	26 Feb 2026	Common Stock	55,148	$21.72	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents restricted stock units ("RSUs") granted to the Reporting Person pursuant to Seaport Entertainment Group Inc.'s (the "Issuer") 2024 Equity Incentive Plan (the "Plan"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs vest in three substantially equal annual installments beginning on February 27, 2027, subject to the Reporting Person's continued service with the Issuer or its subsidiaries through such date.
F2	The options vest in four substantially equal annual installments beginning on February 26, 2027, subject to the Reporting Person's continued service with the Issuer or its subsidiaries through such date.

Content

Represents restricted stock units ("RSUs") granted to the Reporting Person pursuant to Seaport Entertainment Group Inc.'s (the "Issuer") 2024 Equity Incentive Plan (the "Plan"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs vest in three substantially equal annual installments beginning on February 27, 2027, subject to the Reporting Person's continued service with the Issuer or its subsidiaries through such date.

The options vest in four substantially equal annual installments beginning on February 26, 2027, subject to the Reporting Person's continued service with the Issuer or its subsidiaries through such date.