Filing Manager
ASP Manager Corp.
Reporting Manager
ASP Manager Corp.
Symbol
AMTM
Shares outstanding
243,314,324 shares
Disclosed Ownership
43,893,904 shares
Ownership
18%
Form type
SCHEDULE 13D
Filing time
23 Dec 2024, 18:03:02 UTC
Date of event
17 Dec 2024

Quoteable Key Fact

"ASP Manager Corp. disclosed 18% ownership in Amentum Holdings, Inc. Common Stock, par value $0.01 per share (AMTM) on 17 Dec 2024."

Quick Takeaways

  • ASP Manager Corp. filed SCHEDULE 13D for Amentum Holdings, Inc. Common Stock, par value $0.01 per share (AMTM).
  • Disclosed ownership: 18%.
  • Date of event: 17 Dec 2024.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 23 Dec 2024, 18:03.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Source Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
ASP Amentum Investco LP 18% 43,893,904 0 43,893,904 /s/ Eric L. Schondorf By: ASP Manager Corp., its general partner; Eric L. Schondorf / Vice President
ASP Manager Corp. 18% 43,893,904 0 43,893,904 /s/ Eric L. Schondorf Eric L. Schondorf / Vice President 0001621183
American Securities LLC 18% 43,893,904 0 43,893,904 /a/ Michael G. Fisch Michael G. Fisch / Managing Member 0001475483