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Amentum Holdings, Inc.

For the period ended Jun 27, 2025. Filed Aug 6, 2025.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 27, 2025 · Filed Aug 6, 2025

AMTM$21.25-0.6%Stored close · as of Nov 6, 2026
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

þQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 27, 2025

or

oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number:001-42176

Amentum Holdings, Inc.

(Exact name of registrant as specified in its charter)

Delaware99-0622272
(State or other jurisdiction of(I.R.S. Employer
incorporation or organization)Identification No.)

4800 Westfields Blvd., Suite #400

Chantilly, Virginia 20151

(Address of principal executive offices)

(703)579-0410

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, par value $0.01 per shareAMTMNew York Stock Exchange

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ Noo

Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit such files). Yes þ Noo

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated fileroAccelerated filero
Non-accelerated filerþSmaller reporting companyo
Emerging growth companyo

If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yeso Noþ

As of August 1, 2025, there were 243,328,645 shares outstanding of Amentum Holdings, Inc. common stock, par value of $0.01 per share.

PART I: · FINANCIAL INFORMATION
Item 1.Financial Statements (Unaudited)4
Condensed Consolidated Balance Sheets4
Condensed Consolidated Statements of Operations5
Condensed Consolidated Statements of Comprehensive Income (Loss)6
Condensed Consolidated Statements of Shareholders' Equity7
Condensed Consolidated Statements of Cash Flows8
Notes to Condensed Consolidated Financial Statements9
Note 1 — Basis of Presentation9
Note 2 — Recent Accounting Pronouncements9
Note 3 — Acquisition and Divestiture10
Note 4 — Revenues12
Note 5 — Contract Balances14
Note 6 — Sales of Receivables14
Note 7 — Goodwill and Intangible Assets14
Note 8 — Income Taxes15
Note 9 — Debt15
Note 10 — Joint Ventures16
Note 11 — Accumulated Other Comprehensive Income (Loss)17
Note 12 — Segment Information18
Note 13 — Earnings (Loss) Per Share20
Note 14 — Legal Proceedings and Commitments and Contingencies20
Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations21
Item 3.Quantitative and Qualitative Disclosures About Market Risk27
Item 4.Controls and Procedures28
PART II:OTHER INFORMATION29
Item 1.Legal Proceedings29
Item 1A.Risk Factors29
Item 2.Unregistered Sales of Equity Securities and Use of Proceeds29
Item 3.Defaults Upon Senior Securities29
Item 4.Mine Safety Disclosures29
Item 5.Other Information29
Item 6.Exhibits29
Signatures31
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