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 (AMTM) reported an insider equity event. On November 6, 2025, the Executive Chair and Director received 90,727 shares of common stock upon the vesting of restricted stock units.
To cover taxes, 28,818 shares were withheld at $21.79 per share. Following these transactions, the insider held 682,802 shares directly. An additional 23,550 shares were reported as indirectly owned by a spouse. The RSU award vested on November 6, 2025, and the corresponding derivative balance was reduced to zero upon share delivery.
Amentum Holdings (AMTM) reported an insider equity transaction by its Chief Operating Officer. On 11/06/2025, the executive acquired 12,701 shares of common stock through the vesting of restricted stock units (code M). To cover taxes, 3,093 shares were withheld at a price of $21.79 per share (code F). After these transactions, the executive beneficially owned 31,628 common shares directly. The filing also shows 25,404 restricted stock units remaining beneficially owned following the event.
Invesco Ltd. filed Amendment No. 2 to Schedule 13G reporting beneficial ownership of 22,116,835 shares of Amentum Holdings Inc. common stock, representing 9.1% of the class. Invesco reports sole voting power over 22,069,274 shares and sole dispositive power over 22,116,835 shares, with no shared voting or dispositive power. The event date is 09/30/2025. Invesco states the securities were acquired and are held in the ordinary course and not for the purpose of changing or influencing control.
Amentum Holdings, Inc. (AMTM) S-3ASR prospectus describes the incorporation by reference of prior SEC filings, identifies selling stockholders and the methods by which registered shares may be sold, and summarizes shareholder rights and corporate governance provisions. The prospectus incorporates quarterly reports, audited and unaudited financial statements for certain business units acquired from Jacobs, the 2025 proxy’s Part III disclosures, and an updated description of capital stock from the company’s 10-K. It discloses that authorized capital includes 1,000,000,000 shares of Common Stock and 1,000,000 shares of preferred stock, explains voting, dividend and liquidation rights for common shares, and notes the Board’s authority to issue preferred stock with varying rights. The document details selling stockholder registration mechanics, potential sale methods, FATCA and U.S. federal tax rules applicable to Non-U.S. Holders, anti-takeover provisions, and indemnification and limitation of liability provisions for directors and officers.
Q3 FY2025 highlights: Amentum reported three-month revenues of $3,561 million (vs. $2,142 million prior-year) and nine-month revenues of $10,468 million (vs. $6,176 million prior-year), driven by the merger with Jacobs CMS. GAAP net income attributable to common shareholders was $10 million for the quarter and $26 million for the nine months; basic diluted EPS were $0.04 and $0.11, respectively. Cash and cash equivalents were $738 million and total assets were $11,808 million. Total debt, net of OID and fees, was $4,484 million.
Material transactions and metrics: CMS acquisition consideration totaled $4,032 million with preliminary purchase price allocations and measurement-period adjustments; goodwill totaled $5,616 million at June 27, 2025. The company completed the sale of Rapid Solutions for $360 million. Remaining performance obligations were $9.5 billion, with ~73% expected in the next 12 months. Significant amortization expense was $118 million for the quarter and the effective tax rate was 108.3% for the three months ended June 27, 2025.