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.
The Amentum Holdings, Inc. (NYSE: AMTM) SEC filings page on Stock Titan provides access to the company’s official regulatory disclosures as filed with the U.S. Securities and Exchange Commission. These documents are a primary source of information on Amentum’s financial performance, governance, risk factors and executive compensation as an advanced engineering and technology company serving U.S. and allied government markets.
Investors can review annual reports on Form 10-K and quarterly reports on Form 10-Q for detailed discussions of segment performance in Digital Solutions and Global Engineering Solutions, contract backlog, cash flow, and other key metrics. Earnings-related Form 8-K filings, such as those furnished in connection with fiscal year 2025 and interim quarters, include press releases that summarize results and outline factors driving revenue and adjusted EBITDA across Amentum’s government-focused programs.
The company’s DEF 14A definitive proxy statement provides extensive information on corporate governance, the composition and responsibilities of the board of directors, committee structures, and compensation programs for named executive officers. It also describes matters submitted to stockholders at the annual meeting, including director elections, ratification of the independent registered public accounting firm and the advisory vote on executive compensation.
Through this page, users can also monitor other current reports and, where applicable, insider-related filings such as Forms 3, 4 and 5 that disclose transactions by directors and officers. Stock Titan enhances these filings with AI-powered summaries that highlight key points, explain complex sections in plain language and help readers quickly identify items such as changes in guidance, notable contract developments, or governance updates.
Filings are updated in near real time as they appear on the SEC’s EDGAR system, allowing investors, analysts and other stakeholders to follow Amentum’s regulatory history, understand the drivers of its space, defense, nuclear and digital infrastructure work, and assess how governance and compensation practices align with disclosed performance.
Amentum Holdings, Inc. (AMTM) reported an insider equity transaction by its Chief Operating Officer on a Form 4. On November 17, 2025, 1,178 shares of AMTM common stock were distributed upon the vesting of previously granted restricted stock units, and 287 shares were withheld to cover taxes at a price of $21.49 per share. After these transactions, the officer directly owned 46,956 shares of common stock.
On the same date, the officer received a new grant of 46,769 restricted stock units at an exercise price of $0, which will vest in three equal annual installments on the first, second, and third anniversaries of November 17, 2025. Each restricted stock unit represents a contingent right to receive one share of AMTM common stock, aligning the executive’s compensation with future company performance.
Amentum Holdings, Inc. (AMTM) reported insider equity activity by its Executive Chair and director on Form 4 dated 11/17/2025. The insider received 43,396 shares of AMTM common stock upon vesting of previously granted restricted stock units and had 17,077 shares of common stock tendered to cover tax withholding related to that vesting at a price of $21.49 per share. The insider was also granted 111,355 restricted stock units that will vest and be delivered on the first anniversary of November 17, 2025. Following these transactions, the insider beneficially owned 820,476 shares of AMTM common stock directly and 23,550 shares indirectly through a spouse.
Amentum Holdings, Inc. (AMTM) reported insider equity activity by its Chief Operating Officer on a Form 4. On November 15 and 16, 2025, restricted stock units (RSUs) vested, resulting in multiple conversions of RSUs into AMTM common stock, reported with transaction code M. The COO received common shares in amounts including 5,758, 5,053, 3,681, and 4,596 shares as RSUs vested and were distributed as stock. To cover tax withholding upon these vestings, the officer surrendered AMTM common shares in separate transactions with code F, including 1,403, 1,231, and 1,120 shares at a price of $22.07 per share. Following the reported transactions, the COO beneficially owned 46,065 shares of AMTM common stock directly and continued to hold RSUs with contingent rights to receive additional shares.
Amentum Holdings (AMTM) reported an insider equity event by its Chief Financial Officer on 11/06/2025. The CFO received 12,097 shares of common stock upon the vesting of restricted stock units, then disposed of 3,642 shares to cover taxes at $21.79 per share.
Following these transactions, the officer directly holds 8,455 shares of AMTM common stock. The filing also notes 24,194 restricted stock units beneficially owned after the reported activity, each representing the right to receive one share. The vested restricted stock units vested on November 6, 2025.
Amentum Holdings (AMTM) reported an insider equity change by its Chief Technology Officer. On November 6, 2025, 4,838 shares of common stock were delivered upon vesting of restricted stock units. To satisfy taxes, 1,457 shares were withheld at $21.79 per share.
Following these transactions, the CTO directly owns 3,381 common shares. The filing also shows 9,678 restricted stock units remaining outstanding after the vesting event.
Amentum Holdings (AMTM) reported an insider equity transaction by its Chief Executive Officer and Director on November 6, 2025. The executive received 39,617 shares of common stock upon the vesting of restricted stock units, then tendered 17,868 shares for tax withholding at $21.79 per share. Following these transactions, the executive directly owned 113,543 shares of AMTM common stock. In addition, the filing lists 79,236 restricted stock units beneficially owned as derivative securities. These entries reflect routine equity compensation vesting and related tax withholding.
Amentum Holdings (AMTM): Form 4 insider activity. The Chief Growth Officer reported the vesting and settlement of 4,838 restricted stock units into common stock on November 6, 2025. To cover taxes, 1,621 shares were withheld at $21.79 per share (Code F). Following these transactions, the reporting person directly holds 3,217 shares of common stock and 9,678 RSUs remain outstanding. Each RSU represents the right to receive one share.
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.