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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 ASYS
| 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 9, 2026 | SCHEDULE 13G | ASYS Amtech Systems, Inc. | Wasatch Advisors LP | 1.18M | 6.8% | SCHEDULE 13G ↗ |
| Aug 6, 2026 | SCHEDULE 13G/A (amended) | ASYS Amtech Systems, Inc. | First Eagle Investment Management, LLC | 848,697 | 4.9% | SCHEDULE 13G/A ↗ |
| Jul 27, 2026 | SCHEDULE 13G | ASYS Amtech Systems, Inc. | AIGH Capital Management LLC | 1.25M | 7.2% | SCHEDULE 13G ↗ |
| Jul 27, 2026 | SCHEDULE 13G | ASYS Amtech Systems, Inc. | Orin Hirschman | 1.25M | 7.2% | SCHEDULE 13G ↗ |
| Jun 2, 2026 | SCHEDULE 13D/A (amended) | ASYS Amtech Systems, Inc. | Oih LLC | 22,917 | 0.2% | SCHEDULE 13D/A ↗ |
| Jun 2, 2026 | SCHEDULE 13D/A (amended) | ASYS Amtech Systems, Inc. | M3C Holdings LLC | 263,688 | 1.8% | SCHEDULE 13D/A ↗ |
| Jun 2, 2026 | SCHEDULE 13D/A (amended) | ASYS Amtech Systems, Inc. | Robert Averick | 2.99M | 20.6% | SCHEDULE 13D/A ↗ |
| Jun 2, 2026 | SCHEDULE 13D/A (amended) | ASYS Amtech Systems, Inc. | Cornice Fiduciary Management LLC, as Trustee under Trust Agreement dated December 23, 1989 FBO the issue of Jonathan D. Sackler | 1.39M | 9.6% | SCHEDULE 13D/A ↗ |
| Jun 2, 2026 | SCHEDULE 13D/A (amended) | ASYS Amtech Systems, Inc. | Piton Capital Partners LLC | 600,000 | 4.1% | SCHEDULE 13D/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G/A (amended) | ASYS Amtech Systems, Inc. | Wax Asset Management, LLC | 1.32M | 9.2% | SCHEDULE 13G/A ↗ |
| Jan 21, 2026 | SCHEDULE 13G/A (amended) | ASYS Amtech Systems, Inc. | Dimensional Fund Advisors LP | 672,107 | 4.7% | SCHEDULE 13G/A ↗ |
| Apr 4, 2025 | SCHEDULE 13G/A (amended) | ASYS Amtech Systems, Inc. | Royce & Associates LP | 587,986 | 4.1% | SCHEDULE 13G/A ↗ |
| Feb 18, 2025 | SCHEDULE 13D/A (amended) | ASYS Amtech Systems, Inc. | Oih LLC | 22,917 | 0.2% | SCHEDULE 13D/A ↗ |
| Feb 18, 2025 | SCHEDULE 13D/A (amended) | ASYS Amtech Systems, Inc. | M3C Holdings LLC | 263,688 | 1.8% | SCHEDULE 13D/A ↗ |
| Feb 18, 2025 | SCHEDULE 13D/A (amended) | ASYS Amtech Systems, Inc. | Robert Averick | 2.89M | 20.2% | SCHEDULE 13D/A ↗ |
| Feb 18, 2025 | SCHEDULE 13D/A (amended) | ASYS Amtech Systems, Inc. | Cornice Fiduciary Management LLC, as Trustee under Trust Agreement dated December 23, 1989 FBO the issue of Jonathan D. Sackler | 1.39M | 9.7% | SCHEDULE 13D/A ↗ |
| Feb 18, 2025 | SCHEDULE 13D/A (amended) | ASYS Amtech Systems, Inc. | Piton Capital Partners LLC | 600,000 | 4.2% | SCHEDULE 13D/A ↗ |
| Feb 12, 2025 | SCHEDULE 13G/A (amended) | ASYS Amtech Systems, Inc. | Pacific Ridge Capital Partners, LLC | 652,393 | 4.6% | SCHEDULE 13G/A ↗ |
| Feb 11, 2025 | SCHEDULE 13G/A (amended) | ASYS Amtech Systems, Inc. | Wax Asset Management, LLC | 2.26M | 15.8% | SCHEDULE 13G/A ↗ |
| Jan 28, 2025 | SCHEDULE 13G/A (amended) | ASYS Amtech Systems, Inc. | Royce & Associates LP | 1.48M | 10.4% | SCHEDULE 13G/A ↗ |
20 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:18 PM EST.
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