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).

1. Name and Address of Reporting Person* Goldberg 2014 LLC (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (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 X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 05/08/2025
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X 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	05/08/2025		J(1)	V	1,132,839	A	(1)	45,026,743	I	See Footnotes(2)(3)

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

1. Name and Address of Reporting Person* Goldberg 2014 LLC (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Goldberg 2020 LLC (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* LG GP Holding IV LLC (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* LG GP Holding V LLC (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Lindsay Goldberg GP IV LLC (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Lindsay Goldberg GP V LLC (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Lindsay Goldberg IV L.P. (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Lindsay Goldberg IV - A L.P. (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Lindsay Goldberg IV - PCF L.P. (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Lindsay Goldberg Co-Inv. IV L.P. (Last) (First) (Middle) C/O GOLDBERG LINDSAY & CO. LLC 630 FIFTH AVENUE, 30TH FLOOR (Street) NEW YORK NY 10111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Represents securities received in a pro-rata distribution in-kind by Amentum Joint Venture LP to its partners for no consideration.

2. Mr. Goldberg is the Managing Member of Goldberg 2014 LLC and the Manager of Goldberg 2020 LLC. Goldberg 2014 LLC is the Active Member (and thereby, the manager) of LG GP Holding IV LLC, which is the managing member of Lindsay Goldberg GP IV LLC, which is the general partner of each of Lindsay Goldberg IV L.P., Lindsay Goldberg IV - A L.P., Lindsay Goldberg IV - PCF L.P., Lindsay Goldberg Co-Inv. IV L.P. and Lindsay Goldberg Employee Co-Inv. IV L.P (together, the "LG Fund IV Partnerships"). Goldberg 2020 LLC is the Manager of LG GP Holding V LLC, which is the managing member of Lindsay Goldberg GP V LLC, which is the general partner of each of Lindsay Goldberg V L.P. and Lindsay Goldberg Maverick Co-Inv. L.P. (together, the "LG Fund V Partnerships").

3. Each of Lindsay Goldberg GP IV LLC and Lindsay Goldberg GP V LLC are the general partners of LG Co-Inv. A LP. Each of the LG Fund IV Partnerships, the LG Fund V Partnerships and LG Co-Inv. A LP are members of LG Amentum Holdings GP LLC, which is the general partner of LG Amentum Holdings LP. Each of the Reporting Persons other than LG Amentum Holdings LP may be deemed to share beneficial ownership of the Common Shares directly held by LG Amentum Holdings LP.

Remarks:

Due to limitations of the electronic filing system, Lindsay Goldberg Employee Co-Inv. IV L.P., LG Co-Inv. A L.P., Lindsay Goldberg V L.P., Lindsay Goldberg Maverick Co-Inv. L.P., LG Amentum Holdings GP LLC and LG Amentum Holdings LP are filing a separate Form 4. Mr. Goldberg is filing his own Form 4.

	Goldberg 2014 LLC /s/ James C. Pickel, Jr., Vice President	05/12/2025
	Goldberg 2020 LLC /s/ James C. Pickel, Jr., Vice President	05/12/2025
	LG GP Holding IV LLC /s/ James C. Pickel, Jr., Vice President	05/12/2025
	LG GP Holding V LLC /s/ James C. Pickel, Jr., Vice President	05/12/2025
	Lindsay Goldberg GP IV LLC /s/ James C. Pickel, Jr., Vice President	05/12/2025
	Lindsay Goldberg GP V LLC /s/ James C. Pickel, Jr., Vice President	05/12/2025
	Lindsay Goldberg IV L.P. By: Lindsay Goldberg GP IV LLC, its General Partner /s/ James C. Pickel, Jr., Vice President	05/12/2025
	Lindsay Goldberg IV - A L.P. By: Lindsay Goldberg GP IV LLC, its General Partner /s/ James C. Pickel, Jr., Vice President	05/12/2025
	Lindsay Goldberg IV - PCF L.P. By: Lindsay Goldberg GP IV LLC, its General Partner /s/ James C. Pickel, Jr., Vice President	05/12/2025
	Lindsay Goldberg Co-Inv. IV L.P. By: Lindsay Goldberg GP IV LLC, its General Partner /s/ James C. Pickel, Jr., Vice President	05/12/2025
	** 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).
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