Leidos (NYSE: LDOS) Sector President reports tax-related share dispositions

Rhea-AI Filing Summary

Leidos Holdings, Inc. Sector President Elizabeth A. Porter reported two tax-related share withholdings of common stock. On March 4, 2026, the company withheld 376 shares at $180.65 per share, and on March 3, 2026, it withheld 651 shares at $179.40 per share. The footnote explains these shares were withheld by the company to cover the reporting person's tax obligations from previously reported restricted stock unit awards, as authorized in the award agreement. After these dispositions, Porter directly held 48,031 shares of Leidos common stock.

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^*

Porter Elizabeth A

(Last) (First) (Middle)

1750 PRESIDENTS STREET

(Street)

RESTON VA 20190

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Leidos Holdings, Inc. [ LDOS ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Sector President

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

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	03/03/2026		F(1)		651	D	$179.4	48,407	D
Common Stock	03/04/2026		F(1)		376	D	$180.65	48,031	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. These shares were withheld by the Company to satisfy the reporting person's tax obligation associated with previously reported awards of restricted stock units. This share withholding was authorized in the restricted stock award agreement.

Remarks:

	/s/ Ramune M. Kligys by PoA of Elizabeth M. Porter	03/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did Leidos (LDOS) report for Elizabeth A. Porter?

Leidos reported two tax-related share withholdings for Sector President Elizabeth A. Porter. The company withheld 651 shares on March 3, 2026 and 376 shares on March 4, 2026 to satisfy tax obligations on prior restricted stock unit awards.

Were the Leidos (LDOS) insider transactions open-market sales?

No, the transactions were tax-withholding dispositions, not open-market sales. The company withheld shares from previously granted restricted stock units to cover Elizabeth A. Porter’s tax obligations, as authorized under her restricted stock award agreement with Leidos.

How many Leidos (LDOS) shares were withheld for taxes from Elizabeth A. Porter?

Leidos withheld a total of 1,027 shares of common stock from Elizabeth A. Porter. This included 651 shares at $179.40 per share and 376 shares at $180.65 per share, both reported as tax-withholding dispositions.

What is Elizabeth A. Porter’s Leidos (LDOS) share ownership after these transactions?

After the reported tax-withholding dispositions, Sector President Elizabeth A. Porter directly owned 48,031 shares of Leidos common stock. This number reflects her holdings following the March 4, 2026 tax-related share withholding transaction.

What does transaction code F mean in the Leidos (LDOS) Form 4 filing?

Transaction code F indicates a tax-withholding disposition. In this Leidos filing, it means shares of common stock were delivered back to the company to satisfy Elizabeth A. Porter’s tax liability related to previously reported restricted stock unit awards.

What role does Elizabeth A. Porter hold at Leidos (LDOS) in this Form 4?

In this Form 4, Elizabeth A. Porter is identified as a Leidos officer with the title Sector President. The reported transactions reflect company share withholdings related to her compensation in restricted stock units.