Form 4: Amentum CEO Heller's Pre-Planned Stock Vesting & Tax Sale

Amentum Holdings CEO John E. Heller reported a pre-planned vesting of restricted stock units and a subsequent sale of shares for tax withholding purposes, effective November 6, 2025.

Summary

• Amentum Holdings, Inc. CEO and Director, John E. Heller, reported transactions related to his beneficial ownership of company stock.
• On November 6, 2025, Mr. Heller acquired 39,617 shares of AMTM common stock upon the vesting of restricted stock units (RSUs).
• Concurrently, 17,868 shares of AMTM common stock were disposed of at a price of $21.79 per share to cover tax withholding obligations associated with the RSU vesting.
• Following these transactions, Mr. Heller beneficially owns 113,543 shares of common stock and 79,236 restricted stock units.
• These transactions were made pursuant to a Rule 10b5-1 pre-planned contract, instruction, or written plan.

Sentiment

Score: 6

Explanation: The filing details a routine, pre-planned vesting of restricted stock units and a subsequent sale of shares for tax withholding purposes by the CEO. This is a standard executive compensation event and does not indicate any significant positive or negative operational or financial developments for the company.

Positives

• The vesting of restricted stock units indicates the execution of a long-term incentive compensation plan for the CEO, aligning management interests with shareholder value over time.

Negatives

• A portion of the vested shares (17,868) was sold to cover tax withholding, which reduces the CEO's direct beneficial ownership of common stock.

Future Outlook

This Form 4 filing reports specific insider transactions and does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This filing is a routine insider transaction report and does not provide information directly related to broader industry trends or competitive landscape.

Comparison to Industry Standards

• Not applicable as this filing reports an individual insider transaction, not company performance or project results.

Stakeholder Impact

• Shareholders: Minor impact as this is a routine, pre-planned executive compensation transaction, reflecting standard governance practices.

Key Dates

Recommendation

This Form 4 reports a standard, pre-planned insider transaction related to executive compensation (RSU vesting and tax-related share disposal). It does not provide new information regarding the company's operational performance, financial health, or strategic direction that would warrant a change in investment recommendation. Therefore, a 'hold' recommendation is appropriate, maintaining existing positions based on broader company fundamentals.

Keywords

Amentum Holdings, AMTM, John E. Heller, CEO, Director, Form 4, SEC filing, insider transaction, stock vesting, restricted stock units, RSU, tax withholding, beneficial ownership, Rule 10b5-1