Welcome to our dedicated page for Amentum Holdings SEC filings (Ticker: AMTM), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Amentum Holdings, Inc. filings document regulatory reporting for an advanced engineering and technology solutions company serving government, international and commercial customers. The company’s Form 8-K filings report results of operations and financial condition, earnings releases, conference-call materials, material agreements and capital-structure changes, including senior secured term loan and revolving credit facility disclosures involving Amentum Services and Amentum Technology.
Proxy and annual meeting filings describe board elections, auditor ratification, executive compensation votes and related governance procedures. The filing record also documents shareholder voting results, risk and forward-looking statement language, and formal disclosure controls around Amentum’s public-company reporting obligations.
Amentum Holdings director John C. Vollmer reported equity compensation activity involving the company’s common stock. On February 6, 2026, 11,564 restricted stock units converted into an equal number of common shares at a price of $0 per share, increasing his direct common stock holdings to 424,780 shares. On the same date, he was granted 5,062 additional restricted stock units at $0, which will vest on the date of the next annual meeting of stockholders. Following these transactions, Vollmer directly owned 429,842 shares of Amentum Holdings common stock, while the reported restricted stock unit award tied to this filing had a remaining balance of zero units after vesting.
Amentum Holdings, Inc. reported the results of its Annual Meeting of Stockholders held on February 6, 2026. Stockholders elected all 13 director nominees to serve until the next annual meeting and until their successors are elected. A management proposal to ratify Ernst & Young LLP as the independent registered public accounting firm for fiscal year 2026 was approved, receiving 232,680,957 votes for. Stockholders also approved, on an advisory basis, the compensation of the company’s named executive officers for fiscal 2025.
Amentum Holdings, Inc. reported quarterly net income attributable to common shareholders of $44 million, up from $12 million a year earlier, with diluted EPS rising to $0.18 from $0.05. Revenue declined to $3.24 billion from $3.42 billion, mainly due to U.S. government shutdown impacts, contract transitions to unconsolidated joint ventures, and prior-year divestitures, partly offset by growth on existing programs and new awards.
Operating cash flow swung to an outflow of $136 million from an inflow of $110 million, driven by working capital changes, including an additional pay cycle and shutdown effects. Total debt was $3.998 billion and cash was $247 million. Backlog increased to $47.2 billion, and remaining performance obligations were $10.8 billion, with most expected to convert to revenue over the next two years.
Amentum Holdings reported first-quarter fiscal 2026 revenue of $3.24 billion, down 5% year over year, as contract transitions, divestitures, and a government shutdown weighed on sales. Net income rose to $44 million from $12 million, with diluted EPS increasing to $0.18.
Adjusted EBITDA was $263 million with an 8.1% margin, essentially flat versus last year, while adjusted diluted EPS improved to $0.54. Free cash flow shifted to an outflow of $142 million from an inflow of $102 million, largely due to working-capital timing and an extra pay cycle.
Backlog grew to $47.2 billion, up 4%, with a book-to-bill of 1.0x and 1.1x over the last twelve months. The company highlighted several sizable nuclear, defense, and digital infrastructure awards and reaffirmed its fiscal 2026 guidance for revenue of $13.95–$14.3 billion, adjusted EBITDA of $1.10–$1.14 billion, adjusted EPS of $2.25–$2.45, and free cash flow of $525–$575 million. Moody’s upgraded Amentum’s credit rating to Ba3 from Ba1.
Amentum Holdings CEO John E. Heller reported stock activity tied to restricted stock units vesting. On January 28, 2026, 51,979 restricted stock units converted into an equal number of common shares. In connection with this vesting, 19,768 common shares were tendered to cover tax withholding at $35.71 per share.
After these transactions, Heller directly holds 366,058 shares of Amentum common stock and 103,959 restricted stock units, each representing a right to receive one share of common stock. The restricted stock units involved in this filing vested on January 28, 2026.
Amentum Holdings, Inc. reports an amended insider ownership filing for its Chief Executive Officer, who also serves as a director. The Form 4/A updates the number of common shares beneficially owned to 333,847 shares held directly after a previously misreported balance.
According to the explanation, the change reflects a non-reportable transfer of shares received from a pro-rata in-kind distribution by Amentum Joint Venture LP to its partners for no consideration at the time of the transaction. The amendment is being filed solely to correct the holding shown in the non-derivative securities table and does not describe a new purchase or sale for cash.
Amentum Holdings, Inc. chief technology officer filed an amended insider ownership report to correct previously reported holdings of company stock. The Form 4/A shows that the officer now directly beneficially owns 220,999 shares of common stock after the update to Table I.
According to the explanation, the change reflects a non-reportable transaction in which shares were transferred through a pro-rata in-kind distribution by Amentum Joint Venture LP to its partners for no consideration as of 11/17/2025. The amendment is described as being made solely to report the correct holding figure, rather than to disclose a new purchase or sale.
Amentum Holdings, Inc. filed an amended insider trading report to correct the share holdings of its Chief Operating Officer. The filing shows that the COO now reports beneficial ownership of 94,299 shares of common stock, held directly after the previously reported transactions dated 11/17/2025. This amended Form 4/A states that the sole purpose of the update is to report the correct holding in Table I, with no new derivative security activity disclosed in Table II.
Amentum Holdings, Inc. Chief Growth Officer reported the vesting of restricted stock units and related tax withholding. On December 17, 2025, 9,298 restricted stock units were converted into an equal number of AMTM common shares, reflecting a scheduled vesting event. On the same date, 4,194 shares of AMTM common stock were tendered to cover tax withholding obligations at a price of $28.67 per share. After these transactions, the officer directly beneficially owns 26,138 shares of AMTM common stock and no remaining restricted stock units from this award.