DIMENSIONAL FUND ADVISORS LP 13D and 13G filings for Amtech Systems, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2024-10-31 11:55 am Sale | 2024-10-31 | 13G | Amtech Systems, Inc. ASYS | DIMENSIONAL FUND ADVISORS LP | 924,130 6.500% | -198,546 (-17.69%) | Filing |
| 2024-02-09 09:59 am Sale | 2024-02-14 | 13G | Amtech Systems, Inc. ASYS | DIMENSIONAL FUND ADVISORS LP | 1,122,676 7.900% | -25,438 (-2.22%) | Filing |
| 2023-02-10 2:42 pm Purchase | 2023-02-14 | 13G | Amtech Systems, Inc. ASYS | DIMENSIONAL FUND ADVISORS LP | 1,148,114 8.200% | 47,919 (+4.36%) | Filing |
| 2022-02-08 3:52 pm Sale | 2022-02-14 | 13G | Amtech Systems, Inc. ASYS | DIMENSIONAL FUND ADVISORS LP | 1,100,195 7.700% | -1,017 (-0.09%) | Filing |
| 2021-02-12 3:55 pm Sale | 2021-02-16 | 13G | Amtech Systems, Inc. ASYS | DIMENSIONAL FUND ADVISORS LP | 1,101,212 7.800% | -77,850 (-6.60%) | Filing |