ASYS - CIK 0000720500
AMTECH SYSTEMS INC has filed 957 documents with the SEC between 1995 and 2026. The most frequent type is insider trade (331 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Major company event | 8-K | 2018-03-16 | 2018-03-14 |
| Quarterly report | 10-Q | 2018-02-08 | 2017-12-31 |
| Major company event | 8-K | 2018-02-08 | 2018-02-08 |
| Annual report (amended) | 10-K/A | 2018-01-26 | 2017-09-30 |
| Insider trade | 4 | 2018-01-19 | 2018-01-18 |
| Major company event | 8-K | 2018-01-18 | 2018-01-11 |
| New insider ownership | 3 | 2018-01-12 | 2018-01-04 |
| New insider ownership | 3 | 2018-01-12 | 2018-01-04 |
| Major company event | 8-K | 2018-01-10 | 2018-01-04 |
| Passive ownership stake (update) | SC 13G/A | 2018-01-03 | - |
| Activist ownership stake (update) | SC 13D/A | 2017-12-18 | - |
| Major company event | 8-K | 2017-12-18 | 2017-12-13 |
| Insider trade | 4 | 2017-12-15 | 2017-12-13 |
| Insider trade (amended) | 4/A | 2017-12-15 | 2017-11-22 |
| Insider trade | 4 | 2017-12-15 | 2017-12-13 |
| Insider trade | 4 | 2017-11-29 | 2017-11-27 |
| Insider trade | 4 | 2017-11-27 | 2017-11-22 |
| Annual report | 10-K | 2017-11-20 | 2017-09-30 |
| Major company event | 8-K | 2017-11-20 | 2017-11-20 |
| Activist ownership stake (update) | SC 13D/A | 2017-08-24 | - |
| Major company event | 8-K | 2017-08-23 | 2017-08-23 |
| Prospectus supplement | 424B5 | 2017-08-18 | - |
| Major company event | 8-K | 2017-08-18 | 2017-08-18 |
| Major company event | 8-K | 2017-08-18 | 2017-08-17 |
| Prospectus supplement | 424B5 | 2017-08-17 | - |
| Quarterly report | 10-Q | 2017-08-09 | 2017-06-30 |
| Major company event | 8-K | 2017-08-09 | 2017-08-09 |
| Insider trade | 4 | 2017-06-09 | 2017-06-07 |
| SD | - | 2017-05-31 | - |
| Major company event | 8-K | 2017-05-10 | 2017-05-10 |
| Quarterly report | 10-Q | 2017-05-10 | 2017-03-31 |
| Major company event | 8-K | 2017-04-25 | 2017-04-19 |
| Insider trade | 4 | 2017-03-21 | 2017-03-17 |
| Insider trade | 4 | 2017-03-21 | 2017-03-17 |
| Insider trade | 4 | 2017-03-21 | 2017-03-17 |
| Insider trade | 4 | 2017-03-21 | 2017-03-17 |
| Insider trade | 4 | 2017-03-21 | 2017-03-17 |
| Major company event | 8-K | 2017-03-20 | 2017-03-16 |
| Insider trade | 4 | 2017-02-17 | 2017-02-15 |
| Quarterly report | 10-Q | 2017-02-09 | 2016-12-31 |
| EFFECT | - | 2017-02-06 | - |
| Company correspondence | CORRESP | 2017-02-02 | - |
| S-3/A | - | 2017-02-02 | - |
| Proxy statement | DEF 14A | 2017-01-27 | 2017-03-16 |
| Major company event | 8-K | 2017-01-24 | 2017-01-24 |
| Securities registration | S-3 | 2017-01-18 | - |
| Passive ownership stake (update) | SC 13G/A | 2017-01-03 | - |
| Annual report (amended) | 10-K/A | 2016-12-02 | 2016-09-30 |
| Annual report | 10-K | 2016-11-30 | 2016-09-30 |
| Insider trade | 4 | 2016-11-18 | 2016-11-10 |