Vollmer John C. 4

What Happened
John C. Vollmer, a director of Amentum Holdings, acquired shares on February 6, 2026 through vesting and conversion of derivative securities. The filing shows 5,062 shares received as a grant/award (vested restricted stock units) and 11,564 shares acquired via exercise/conversion of derivative securities; the same 11,564 derivative units were reported as disposed (conversion/cancellation). Prices reported are $0.00 (no cash paid) and the reported total values are $0. These are compensation-related transactions rather than open-market purchases.

Key Details

• Transaction date: February 6, 2026; Form 4 filed February 10, 2026 (timely within required 2 business days).
• Activity codes: A = award/grant (5,062 shares); M = exercise/conversion of derivative (11,564 shares acquired; 11,564 derivative units disposed).
• Reported prices/values: $0.00 / $0 for awarded and converted shares (no cash exchanged in filing).
• Net common shares acquired (per filing): 16,626 shares (5,062 + 11,564).
• Shares owned after the transactions: not stated in the provided filing summary.
• Notable footnotes: F1/F5 — these shares reflect RSUs that vested on Feb 6, 2026; F2 — some shares reflect a pro‑rata in‑kind distribution from Amentum Joint Venture LP to partners for no consideration; F3/F4 — RSUs represent contingent rights to one share each and some were scheduled to vest at the next annual meeting (per filing language).

Context
Code M indicates conversion/exercise of derivative securities into common stock (the derivative instrument is often canceled when converted, which explains the matching disposition line). These transactions were compensation/vesting events (RSUs and derivative conversion) and therefore are routine for insiders; they do not represent an open-market buy or sale and should not be interpreted on their own as a bullish or bearish signal.