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 AI
| 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 |
|---|---|---|---|---|---|---|
| May 15, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | The Siebel 2011 Irrevocable Children's Trust | 1.24M | 0.9% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | First Virtual Holdings, LLC | 509,216 | 0.4% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Siebel Asset Management III, L.P. | 72,695 | 0.1% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Siebel Asset Management, L.P. | 170,294 | 0.1% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | The Siebel Living Trust u/a/d 7/27/93, as amended | 2.77M | 1.9% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Thomas M Siebel | 25.56M | 15.3% | SCHEDULE 13G/A ↗ |
| Apr 29, 2026 | SCHEDULE 13G | AI C3.ai, Inc. | Vanguard Portfolio Management | 8.66M | 6.1% | SCHEDULE 13G ↗ |
| Apr 24, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | BlackRock, Inc. | 9.69M | 6.8% | SCHEDULE 13G/A ↗ |
| Mar 26, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Susquehanna Securities, LLC | 3.98M | 2.9% | SCHEDULE 13G/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Susquehanna Investment Group | 3.98M | 2.9% | SCHEDULE 13G/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Susquehanna Fundamental Investments, LLC | 3.98M | 2.9% | SCHEDULE 13G/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | SIG Brokerage, LP | 3.98M | 2.9% | SCHEDULE 13G/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | G1 Execution Services, LLC | 3.98M | 2.9% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | The Siebel 2011 Irrevocable Children's Trust | 1.24M | 0.9% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | First Virtual Holdings, LLC | 509,216 | 0.4% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Siebel Asset Management III, L.P. | 72,695 | 0.1% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Siebel Asset Management, L.P. | 170,294 | 0.1% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | The Siebel Living Trust u/a/d 7/27/93, as amended | 4.58M | 3.3% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Thomas M Siebel | 27.37M | 17.2% | SCHEDULE 13G/A ↗ |
| Nov 13, 2025 | SCHEDULE 13G | AI C3.ai, Inc. | Susquehanna Securities, LLC | 7.13M | 5.3% | SCHEDULE 13G ↗ |
| Nov 13, 2025 | SCHEDULE 13G | AI C3.ai, Inc. | Susquehanna Investment Group | 7.13M | 5.3% | SCHEDULE 13G ↗ |
| Nov 13, 2025 | SCHEDULE 13G | AI C3.ai, Inc. | SIG Brokerage, LP | 7.13M | 5.3% | SCHEDULE 13G ↗ |
| Nov 13, 2025 | SCHEDULE 13G | AI C3.ai, Inc. | G1 Execution Services, LLC | 7.13M | 5.3% | SCHEDULE 13G ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Susquehanna Securities, LLC | 5.61M | 4.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Susquehanna Investment Group | 5.61M | 4.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Susquehanna Fundamental Investments, LLC | 5.61M | 4.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | SIG Brokerage, LP | 5.61M | 4.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | G1 Execution Services, LLC | 5.61M | 4.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | The Siebel 2011 Irrevocable Children's Trust | 1.24M | 0.9% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | First Virtual Holdings, LLC | 509,216 | 0.4% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Siebel Asset Management III, L.P. | 72,695 | 0.1% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Siebel Asset Management, L.P. | 170,294 | 0.1% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | The Siebel Living Trust u/a/d 7/27/93, as amended | 5.89M | 4.4% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Thomas M Siebel | 29.19M | 18.6% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | Voya Financial, Inc. | 5.58M | 4.4% | SCHEDULE 13G/A ↗ |
| Feb 13, 2025 | SCHEDULE 13G | AI C3.ai, Inc. | Susquehanna Securities, LLC | 6.78M | 5.4% | SCHEDULE 13G ↗ |
| Feb 13, 2025 | SCHEDULE 13G | AI C3.ai, Inc. | Susquehanna Investment Group | 6.78M | 5.4% | SCHEDULE 13G ↗ |
| Feb 13, 2025 | SCHEDULE 13G | AI C3.ai, Inc. | Susquehanna Fundamental Investments, LLC | 6.78M | 5.4% | SCHEDULE 13G ↗ |
| Feb 13, 2025 | SCHEDULE 13G | AI C3.ai, Inc. | G1 Execution Services, LLC | 6.78M | 5.4% | SCHEDULE 13G ↗ |
| Feb 5, 2025 | SCHEDULE 13G/A (amended) | AI C3.ai, Inc. | BlackRock, Inc. | 9.98M | 8.0% | SCHEDULE 13G/A ↗ |
41 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 5:29 PM EST.
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