Amtech Systems, Inc.
Amtech Systems, Inc. (ASYS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ASYS · as of Mar 31, 2025
Ownership Breakdown
39
Institutional Holders
▲ 2 vs Q4
$23.18M
Total Inst. Value
▼ $7.06M vs Q4
14.50M
Shares Outstanding
freeFloat 72.07%
4.80M
13F Shares Held
▼ 749,239 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ASYS largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
DIMENSIONAL FUND ADVISORS LP special industry machinery, nec | 927.6K | 6.49% | 6.49% | $4.48B | May 13, 2025 | ▼ 3.6K |
FIRST EAGLE INVESTMENT MANAGEMENT, LLC special industry machinery, nec | 841.9K | 5.89% | 5.89% | $4.07B | May 12, 2025 | ▲ 7.0K |
VANGUARD GROUP INC special industry machinery, nec | 670.8K | 4.69% | 4.69% | $3.24B | May 9, 2025 | — held |
PACIFIC RIDGE CAPITAL PARTNERS, LLC special industry machinery, nec | 621.0K | 4.34% | 4.34% | $3.00B | May 9, 2025 | ▼ 31.4K |
ROYCE & ASSOCIATES LP special industry machinery, nec | 588.0K | 4.11% | 4.11% | $2.84B | May 6, 2025 | ▼ 891.3K |
GEODE CAPITAL MANAGEMENT, LLC special industry machinery, nec | 136.5K | 95.49% | 95.49% | $659.52M | May 13, 2025 | ▲ 3.8K |
BLACKROCK, INC. special industry machinery, nec | 120.0K | 83.92% | 83.92% | $579.46M | May 2, 2025 | ▼ 549 |
ANCORA ADVISORS, LLC special industry machinery, nec | 111.0K | 77.66% | 77.66% | $536.24M | May 15, 2025 | ▲ 407 |
AMH EQUITY LTD special industry machinery, nec | 97.6K | 68.26% | 68.26% | $471.33M | May 5, 2025 | ▲ 56.4K |
KOVACK ADVISORS, INC. special industry machinery, nec | 75.4K | 52.74% | 52.74% | $364.18M | May 6, 2025 | ▲ 9.9K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
21
Increased
+221.6K shares4
New Positions
first time holders7
Decreased
−938.6K shares4
Sold Out
fully exitedNet shares change (top 50)
717.0K
+221.6K / −938.6K
Net new holders
+14
4 new / 4 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ASYS insider trading · insider activity
Source: SEC Form 4
8
Buy transactions
4
Sell transactions
2.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Shechter Guy President & COO | May 19, 2026 | Award | 50,000 | $19.67 | $983.5K | 50.0K | Form 4 ↗ |
SABOL THOMAS B Chief Financial Officer | May 14, 2026 | Award | 45,000 | $22.46 | $1.01M | 45.0K | Form 4 ↗ |
LUDWIG MICHAEL M director | Mar 4, 2026 | Award | 2,839 | — | — | 2.8K | Form 4 ↗ |
Jakwani Asif Y. director | Mar 4, 2026 | Award | 2,839 | — | — | 2.8K | Form 4 ↗ |
Averick Robert M
| Mar 4, 2026 | Award | 2,839 | — | — | 10.9K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Amtech Systems, Inc. (ASYS) is primarily owned by institutional investors, who hold approximately 33.1% of total shares outstanding. Company insiders own approximately 27.93%, while retail and public investors account for the remaining 38.97%.
The largest institutional shareholder of Amtech Systems, Inc. is DIMENSIONAL FUND ADVISORS LP, holding approximately 927,626 shares — equal to 6.49% of outstanding shares — as of March 31, 2025.
A total of 39 institutional investors currently hold ASYS stock, with a combined institutional value of approximately $23,178,100 as of the most recent 13F filing period.
Frequently asked questions
ASYS ownershipAmtech Systems, Inc. (ASYS) is primarily owned by institutional investors, who hold approximately 33.1% of shares. The largest shareholder is DIMENSIONAL FUND ADVISORS LP with a 6.49% stake. Company insiders hold 27.93%. Data sourced from SEC Form 13F as of March 31, 2025.