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$AMTM All transactions

Amentum Holdings, Inc.

A

$ Value

$0

Shares

22,271

Price

$0

Filed

Nov 19

Insider

Name

St. Mary Michele T

Title

Chief Legal Officer & GC

CIK

0002057553

Roles

Officer

Transaction Details

Transaction Date

2025-11-17

Code

A

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

22,271

Footnotes

One-third of the restricted stock units shall vest on each of the first, second and third anniversaries of November 17, 2025.

Filing Info

Accession No.

0001628280-25-053272

Form Type

4

Issuer CIK

0002011286

St. Mary Michele T's History

Date Ticker Type Value
2026-02-17 AMTM M
2026-02-17 AMTM F $69K
2026-02-17 AMTM M $0
2025-11-17 AMTM A $0

Other Insiders at AMTM (90d)

Insider Bought Sold Last
EBERHART RALPH E 2026-02-06
Thompson Christopher M.T. 2026-02-06
Heller John E.
Chief Executive Officer
2026-01-28
Rowland Sandra E. 2026-02-06
IRELAND SUSAN LESLIE 2026-02-06
Vollmer John C. 2026-02-06
Loughran Barbara 2026-02-06
Brooks Vincent K 2026-02-06
Arnette Stephen A
Chief Operating Officer
2026-03-02
Bruning Jill L
Chief Technology Officer
2026-03-04
St. Mary Michele T
Chief Legal Officer & GC
2026-02-17