Amtech Systems, Inc.
A maker of equipment that semiconductor factories use to build and package chips — including reflow ovens for advanced packaging (used in AI accelerators), diffusion furnaces, and CMP consumables and wafer-cleaning systems sold under the PR Hoffman, Entrepix, and Intersurface Dynamics brands. The company was incorporated in Arizona in 1981 as Quartz Engineering & Materials, renamed itself Amtech in 1987, and later grew through acquisitions such as BTU International. Its name is a portmanteau of "American" (or "Advanced") and "technology."
Granted 62.6K · Bought 574.3K
Granted 543.3K · Sold 153.8K
Bought 350.0K · Sold 365.4K
Bought 550.0K
Bought 30.9K
Bought 55.4K
Granted 63.4K · Bought 111.6K
Granted 521.1K · Bought 18.2K · Sold 638.8K
Granted 48.6K · Sold 10.0K
Granted 181.7K · Bought 8.1K · Sold 140.7K
Granted 33.1K
Granted 124.6K · Sold 126.1K
Granted 58.3K · Bought 2.0K · Sold 28.8K
Granted 8.5K · Bought 2.0K
Granted 8.1K
Bought 7.0K
Granted 54.8K · Sold 42.9K
Granted 4.5K · Sold 2.0K
Granted 70.6K · Bought 2.0K · Sold 70.6K
Granted 22.6K · Bought 1.5K · Sold 22.6K
Bought 520.6K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Averick Robert MDirector, 10% owner · 68 transactions | — | 5.24M | 62.6K | 574.3K | — |
| Wansem Paul J Van DerDirector · 31 transactions | — | 926.5Kas of Dec 2017 | 543.3K | — | 153.8K |
| Marxe Austin W & Greenhouse David M10% owner · 13 transactions | — | 894.6Kas of Jan 2010 | — | 350.0K | 365.4K |
| Piton Capital Partners LLC10% owner · 10 transactions | — | 600.0Kas of Nov 2015 | — | 550.0K | — |
| Scott Richard L10% owner · 7 transactions | — | 515.0Kas of Jan 2007 | — | 30.9K | — |
| M3C Holdings LLC10% owner · 5 transactions | — | 263.7Kas of May 2015 | — | 55.4K | — |
| Daigle Robert CChairman & CEO, Director · 20 transactions | — | 156.9Kas of May 2025 | 63.4K | 111.6K | — |
| Whang Jong SDirector · 208 transactions | — | 70.7Kas of Aug 2022 | 521.1K | 18.2K | 638.8K |
| Garnreiter MichaelDirector · 16 transactions | — | 38.6K | 48.6K | — | 10.0K |
| Anderson Bradley ClarkChief Financial Officer · 47 transactions | — | 35.0Kas of Nov 2015 | 181.7K | 8.1K | 140.7K |
| Ludwig Michael MDirector · 7 transactions | — | 33.1K | 33.1K | — | — |
| Pentinga FokkoPresident and CEO, Director · 31 transactions | — | 31.8Kas of Jun 2018 | 124.6K | — | 126.1K |
| Whang MichaelChief Executive Officer, Director · 12 transactions | — | 31.5Kas of Nov 2022 | 58.3K | 2.0K | 28.8K |
| Gibbs LisaVP and Chief Financial Officer, Director · 2 transactions | — | 10.5Kas of Nov 2022 | 8.5K | 2.0K | — |
| Jakwani Asif Y.Director · 1 transaction | — | 8.1K | 8.1K | — | — |
| Goudena Egbert J. G.Director · 3 transactions | — | 6.0Kas of Nov 2015 | — | 7.0K | — |
| Hass Robert TCFO · 18 transactions | — | 5.5Kas of Dec 2018 | 54.8K | — | 42.9K |
| Hwang Jeong MoChief Technology Officer · 3 transactions | — | 2.5Kas of Dec 2011 | 4.5K | — | 2.0K |
| King Robert FDirector · 30 transactions | — | 2.0Kas of Dec 2020 | 70.6K | 2.0K | 70.6K |
| Giese AlfredDirector · 16 transactions | — | 1.5Kas of Mar 2014 | 22.6K | 1.5K | 22.6K |
| Schreyer Leslie J10% owner · 14 transactions | — | 0as of Nov 2018 | — | 520.6K | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over all recorded history: +632.0K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.