Amentum (AMTM) Chief Technology Officer reports 30,000-share bona fide stock gift

Rhea-AI Filing Summary

Amentum Holdings, Inc. Chief Technology Officer Jill L. Bruning reported a disposition of common stock through a bona fide gift. On the reported date, she transferred 30,000 shares of Common Stock at a stated price of $0.0000 per share, described as a gift transfer. After this transaction, she held 190,999 shares of Common Stock in direct ownership.

Insider Trade Summary

30,000 shares gifted

Mixed 1 txn

Insider Bruning Jill L

Role Chief Technology Officer

Type	Security	Shares	Price	Value
Gift	Common Stock	30,000	$0.00	--

Holdings After Transaction: Common Stock — 190,999 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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^*

Bruning Jill L

(Last) (First) (Middle)

C/O AMENTUM HOLDINGS, INC.

4800 WESTFIELDS BOULEVARD, SUITE 400

(Street)

CHANTILLY VA 20151

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Amentum Holdings, Inc. [ AMTM ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

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	03/04/2026		G		30,000	D	$0	190,999	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:

Remarks:

	/s/ Michele T. St. Mary, Attorney-in-Fact	03/05/2026
	** 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.

FAQ

What insider transaction did Amentum Holdings (AMTM) report for Jill L. Bruning?

Amentum Holdings reported that Chief Technology Officer Jill L. Bruning made a bona fide gift of 30,000 shares of Common Stock. The transaction was coded "G" and classified as a gift transfer at a stated price of $0.0000 per share.

Was the AMTM insider Form 4 transaction a buy or sell of shares?

The Form 4 for Amentum Holdings shows a disposition of shares by gift, not an open market buy or sell. The transaction code "G" indicates a bona fide gift, with 30,000 Common Stock shares transferred at $0.0000 per share.

How many Amentum (AMTM) shares did Jill L. Bruning hold after the reported gift?

After the reported gift transaction, Chief Technology Officer Jill L. Bruning held 190,999 shares of Amentum Holdings Common Stock. These shares are reported as direct ownership in the Form 4, following the 30,000-share bona fide gift disposition.

What does transaction code "G" mean in the Amentum (AMTM) Form 4 filing?

In the Amentum Holdings Form 4, transaction code "G" is described as a bona fide gift. This means the 30,000 Common Stock shares were transferred as a gift transfer, with the filing showing a transaction price of $0.0000 per share.

What role does Jill L. Bruning hold at Amentum Holdings (AMTM) in this Form 4?

In this Form 4, Jill L. Bruning is identified as an officer of Amentum Holdings, serving as Chief Technology Officer. She is not listed as a director or ten percent owner in the structured data associated with this insider transaction.