SEG (SEG) CEO faces 4,918-share tax withholding but keeps 115,615 shares

Rhea-AI Filing Summary

Seaport Entertainment Group Inc. reported that Chief Executive Officer Matthew Morris Partridge had 4,918 shares of common stock withheld on April 1, 2026 to cover tax liabilities tied to vesting under the company’s 2024 Equity Incentive Plan at $21.46 per share. This was a tax-withholding disposition rather than an open-market sale, and Partridge held 115,615 shares of common stock directly after the transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider PARTRIDGE MATTHEW MORRIS

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	4,918	$21.46	$106K

Holdings After Transaction: Common Stock — 115,615 shares (Direct)

Footnotes (1)

1. [object Object]

Key Figures

Shares withheld for tax: 4,918 shares Withholding share value: $21.46 per share Shares held after transaction: 115,615 shares +1 more

4 metrics

Shares withheld for tax 4,918 shares Tax-withholding disposition on April 1, 2026

Withholding share value $21.46 per share Value used for tax liability on withheld shares

Shares held after transaction 115,615 shares Direct common stock holdings after withholding

Tax-withholding shares count 4,918 shares Reported in transactionSummary as taxWithholdingShares

Key Terms

withheld, tax liability, vesting, 2024 Equity Incentive Plan

4 terms

withheld financial

"the Issuer withheld 4,918 shares of common stock of the Issuer"

tax liability financial

"for payment of the tax liability incident to the vesting"

vesting financial

"tax liability incident to the vesting of shares of common stock"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

2024 Equity Incentive Plan financial

"granted by the Issuer pursuant to the terms of the Issuer's 2024 Equity Incentive Plan"

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

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 04/03/2026 - 04:40 PM Learn about SEC filing dates

FAQ

What did SEG CEO Matthew Partridge report in this Form 4 filing?

SEG CEO Matthew Partridge reported a tax-related share disposition, not an open-market trade. The company withheld 4,918 common shares on April 1, 2026 to pay taxes from vesting equity, leaving him with 115,615 directly held shares afterward.

How many Seaport Entertainment Group (SEG) shares were withheld for taxes?

The company withheld 4,918 SEG common shares from Matthew Partridge to satisfy tax obligations. These shares related to the vesting of stock granted under the 2024 Equity Incentive Plan and were not sold into the market, but retained by the issuer.

At what price were the withheld SEG shares valued in this Form 4?

The withheld SEG shares were valued at $21.46 per share for this tax-withholding event. This price reflects the fair market value used to calculate the tax liability associated with the vesting equity award under Seaport Entertainment Group’s 2024 Equity Incentive Plan.

How many SEG shares does the CEO hold after this tax-withholding transaction?

Following the tax-withholding transaction, CEO Matthew Partridge directly holds 115,615 SEG common shares. This figure comes after 4,918 shares were withheld by the company to cover taxes related to vesting of stock granted under the 2024 Equity Incentive Plan.

Was this SEG Form 4 transaction an open-market sale by the CEO?

No, this Form 4 does not show an open-market sale by the CEO. It reflects shares withheld by Seaport Entertainment Group to pay tax liabilities from vesting equity, a routine administrative step rather than a discretionary sale into the public market.

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^*

PARTRIDGE MATTHEW MORRIS

(Last) (First) (Middle)

199 WATER STREET

28TH FLOOR

(Street)

NEW YORK NEW YORK 10038

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

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
Common Stock	04/01/2026		F(1)		4,918	D	$21.46	115,615	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 April 1, 2026, Seaport Entertainment Group Inc. (the "Issuer") withheld 4,918 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	04/02/2026
	** 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).
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)