Feeds › Ownership stakes (13D / 13G)
Ownership stakes (13D / 13G)
Investors who own more than 5% of a company, from activists (13D) to passive holders (13G).
About this data
- What it is
- An investor who owns more than 5% of a public company must say so. Investors who may try to influence the company, such as activists, file the longer Schedule 13D; passive holders file the shorter Schedule 13G.
- Who files it
- The investor, within days of crossing 5%, and again whenever the stake changes materially.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- 13G filings are far more common than 13D. A 13D usually means the investor intends to push for changes, so it tends to get more attention.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Filings per day, last 30 days
13D (activist) 13G (passive)
Latest ownership filings
Showing: ticker AMTM
| Filed | ScheduleBoth report a stake of more than 5%. A 13D is filed by investors who may try to influence the company, such as activists; a 13G by passive holders. | Company | Investor | Shares | % of shares | Filing |
|---|---|---|---|---|---|---|
| Aug 6, 2026 | SCHEDULE 13G | AMTM Amentum Holdings, Inc. | Primecap Management Co/Ca/ | 12.29M | 5.0% | SCHEDULE 13G ↗ |
| May 7, 2026 | SCHEDULE 13G/A (amended) | AMTM Amentum Holdings, Inc. | Invesco Ltd. | 24.53M | 10.1% | SCHEDULE 13G/A ↗ |
| Mar 26, 2026 | SCHEDULE 13G/A (amended) | AMTM Amentum Holdings, Inc. | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Nov 6, 2025 | SCHEDULE 13G/A (amended) | AMTM Amentum Holdings, Inc. | Invesco Ltd. | 22.12M | 9.1% | SCHEDULE 13G/A ↗ |
| May 9, 2025 | SCHEDULE 13G/A (amended) | AMTM Amentum Holdings, Inc. | Invesco Ltd. | 17.19M | 7.1% | SCHEDULE 13G/A ↗ |
| Mar 13, 2025 | SCHEDULE 13G/A (amended) | AMTM Amentum Holdings, Inc. | Jacobs Engineering Group Inc. | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Mar 13, 2025 | SCHEDULE 13G/A (amended) | AMTM Amentum Holdings, Inc. | Jacobs Solutions Inc. | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 7, 2025 | SCHEDULE 13G | AMTM Amentum Holdings, Inc. | Invesco Ltd. | 13.86M | 5.7% | SCHEDULE 13G ↗ |
| Feb 5, 2025 | SCHEDULE 13G/A (amended) | AMTM Amentum Holdings, Inc. | BlackRock, Inc. | 16.77M | 6.9% | SCHEDULE 13G/A ↗ |
| Jan 30, 2025 | SCHEDULE 13G/A (amended) | AMTM Amentum Holdings, Inc. | The Vanguard Group | 16.54M | 6.8% | SCHEDULE 13G/A ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | LG Amentum Holdings LP | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | LG Amentum Holdings GP LLC | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Lindsay Goldberg Maverick Co-Inv. L.P. | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Lindsay Goldberg V L.P. | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | LG Co-Inv. A L.P. | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Lindsay Goldberg Employee Co-Inv. IV L.P. | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Lindsay Goldberg Co-Inv. IV L.P. | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Lindsay Goldberg IV - PCF L.P. | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Lindsay Goldberg IV - A L.P. | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Lindsay Goldberg IV L.P. | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Lindsay Goldberg GP V LLC | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Lindsay Goldberg GP IV LLC | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | LG GP Holding V LLC | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | LG GP Holding IV LLC | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Goldberg 2020 LLC | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Goldberg 2014 LLC | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | Alan E. Goldberg | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | American Securities LLC | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | ASP Manager Corp. | 43.89M | 18.0% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | AMTM Amentum Holdings, Inc. | ASP Amentum Investco LP | 43.89M | 18.0% | SCHEDULE 13D ↗ |
30 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 5:37 PM EST.
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