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 SAM
| 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 |
|---|---|---|---|---|---|---|
| Oct 27, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | BlackRock, Inc. | 1.10M | 13.4% | SCHEDULE 13G/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | AQR Capital Management Holdings, LLC | 539,988 | 6.5% | SCHEDULE 13G/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | AQR Capital Management, LLC | 539,988 | 6.5% | SCHEDULE 13G/A ↗ |
| Jul 22, 2026 | SCHEDULE 13G | SAM Boston Beer Company, Inc. | Israel A. Englander | 411,413 | 4.9% | SCHEDULE 13G ↗ |
| Jul 22, 2026 | SCHEDULE 13G | SAM Boston Beer Company, Inc. | Millennium Group Management LLC | 411,413 | 4.9% | SCHEDULE 13G ↗ |
| Jul 22, 2026 | SCHEDULE 13G | SAM Boston Beer Company, Inc. | Millennium Management LLC | 411,413 | 4.9% | SCHEDULE 13G ↗ |
| Jul 8, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | BlackRock, Inc. | 947,156 | 11.3% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | AQR Capital Management Holdings, LLC | 651,984 | 7.8% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | AQR Capital Management, LLC | 651,984 | 7.8% | SCHEDULE 13G/A ↗ |
| May 6, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | Abigail P. Johnson | 195,365 | 2.3% | SCHEDULE 13G/A ↗ |
| May 6, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | FMR LLC | 195,365 | 2.3% | SCHEDULE 13G/A ↗ |
| Apr 29, 2026 | SCHEDULE 13G | SAM Boston Beer Company, Inc. | Vanguard Portfolio Management | 635,388 | 7.6% | SCHEDULE 13G ↗ |
| Mar 26, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 12, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | AQR Capital Management Holdings, LLC | 440,224 | 5.1% | SCHEDULE 13G/A ↗ |
| Feb 12, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | AQR Capital Management, LLC | 440,224 | 5.1% | SCHEDULE 13G/A ↗ |
| Feb 11, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | C. James Koch | 2.27M | 21.6% | SCHEDULE 13G/A ↗ |
| Jan 30, 2026 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | The Vanguard Group | 1.04M | 12.1% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G | SAM Boston Beer Company, Inc. | AQR Capital Management Holdings, LLC | 647,060 | 7.3% | SCHEDULE 13G ↗ |
| Nov 14, 2025 | SCHEDULE 13G | SAM Boston Beer Company, Inc. | AQR Capital Management, LLC | 647,060 | 7.3% | SCHEDULE 13G ↗ |
| Jun 5, 2025 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | The Vanguard Group | 912,433 | 10.1% | SCHEDULE 13G/A ↗ |
| May 14, 2025 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | T. Rowe Price Investment Management, Inc. | 52,713 | 0.6% | SCHEDULE 13G/A ↗ |
| Feb 7, 2025 | SCHEDULE 13G/A (amended) | SAM Boston Beer Company, Inc. | C. James Koch | 2.27M | 20.0% | SCHEDULE 13G/A ↗ |
22 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 5:38 PM EST.
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