Form 4: Amentum CTO Vests Shares, Sells for Tax

Amentum Holdings' Chief Technology Officer, Jill L Bruning, vested 4,838 restricted stock units and sold a portion for tax withholding.

Summary

• Jill L Bruning, Chief Technology Officer of Amentum Holdings, Inc. (AMTM), reported transactions related to her beneficial ownership.
• On November 6, 2025, 4,838 restricted stock units (RSUs) vested, resulting in the acquisition of 4,838 shares of AMTM common stock.
• Concurrently, 1,457 shares of AMTM common stock were disposed of to cover tax withholding obligations at a price of $21.79 per share.
• Following these transactions, Jill L Bruning directly beneficially owns 3,381 shares of common stock.
• Additionally, 9,678 derivative securities (Restricted Stock Units) remain beneficially owned.

Sentiment

Score: 6

Explanation: The filing reports a routine executive compensation event (vesting of RSUs) and subsequent tax-related share disposition. This is a neutral to slightly positive event as it represents a realization of value for the executive, but it does not indicate significant operational or financial news for the company.

Positives

• The vesting of 4,838 restricted stock units represents a realization of compensation for the Chief Technology Officer.
• The acquisition of 4,838 common shares increases the direct equity stake of a key executive in the company.

Negatives

• The disposition of 1,457 shares for tax withholding is a routine event and not indicative of a negative outlook.

Future Outlook

The filing does not provide any forward-looking statements or guidance.

Industry Context

This is a routine insider compensation event and does not provide specific insights into broader industry trends or competitive landscape.

Stakeholder Impact

• Shareholders: Minor impact, as it's a routine compensation event for an executive. The sale of shares for tax purposes is a small dilution relative to the overall outstanding shares.
• Management: The Chief Technology Officer realized value from her compensation package.

Key Dates

Keywords

Amentum Holdings, AMTM, Form 4, insider transaction, restricted stock units, RSU vesting, Chief Technology Officer, executive compensation, stock transaction, beneficial ownership