The Vanguard Group 13D/13G Filings for Amentum Holdings, Inc. (AMTM)

The Vanguard Group 13D and 13G filings for Amentum Holdings, Inc.:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Shares have been adjusted for stock splits.
Time period
Reported
DateTime		 Transaction
Date		 Type Company
Symbol		 Filed By
Symbol		 Shares Owned
% Owned		 Shares Vs. Prev Report View
2025-01-30
8:09 pm
Purchase		 2024-12-31 13G Amentum Holdings, Inc.
AMTM		 The Vanguard Group 16,542,447
6.790%		 2,529,173increase
(+18.05%)		 Filing
2024-11-12
1:25 pm
Unchanged		 2024-09-30 13G Amentum Holdings, Inc.
AMTM		 The Vanguard Group 14,013,274
9.140%		 0
(Unchanged)		 Filing
2024-11-04
10:22 am
Purchase		 2024-09-30 13G Amentum Holdings, Inc.
AMTM		 The Vanguard Group 14,013,274
9.140%		 14,013,274increase
(New Position)		 Filing