Amtech Systems Inc
Ownership
Ownership Structure
Who owns Amtech Systems Inc (ASYS)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 77.4% of the shares are freely tradable; institutional investors hold 65.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Arnhold & S. Bleichroeder Advisers, LLC | 9.69 | 1,696,852 | +103.8 | 06/30/2026 |
| AIGH Capital Management, LLC | 7.15 | 1,252,000 | +0.0 | 06/30/2026 |
| BlackRock Inc | 4.36 | 763,487 | +424.9 | 06/30/2026 |
| Awm Investment Company Inc | 3.94 | 690,000 | +0.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.32 | 580,502 | +2.9 | 06/30/2026 |
| Acadian Asset Management LLC | 3.31 | 580,278 | +24.3 | 06/30/2026 |
| Dimensional Fund Advisors, Inc. | 2.44 | 426,694 | -19.4 | 06/30/2026 |
| Marshall Wace Asset Management Ltd | 2.28 | 398,564 | -4.4 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| First Eagle Small Cap Opportunity I | 4.19 | 734,102 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.53 | 443,626 | +0.0 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Shechter Guy | President & CEO | 53,450 | 684,160 $ | Aug 24, 2026 | direct |
| Sabol Thomas B | Chief Financial Officer | 2,000 | 25,600 $ | Sep 14, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 14, 2026 | Sabol Thomas B | Chief Financial Officer | Buy | 2,000 | 14.14 | 28,270 |
| Aug 24, 2026 | Shechter Guy | President & CEO | Buy | 3,450 | 14.34 | 49,456 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 3, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.