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SC 13D/A

Beneficial Ownership Report

AMTECH SYSTEMS INC Filed 2021-02-18 Acc 0000919574-21-001795

Documents 1

SC 13D/A Beneficial Ownership Report , d8806077_13d-a.htm

Around this filing

2022-02-24 SC 13D/A Beneficial Ownership Report
2021-02-18 SC 13D/A Beneficial Ownership Report
2021-02-12 SC 13G/A Amended Statement of Ownership
2021-02-11 10-Q Quarterly Report
2021-02-11 8-K Results of operations · Other events
2020-01-30 SC 13D/A Beneficial Ownership Report

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