AMTECH SYSTEMS INC — SCHEDULE 13G/A Filings
6 SCHEDULE 13G/A filings on record
This page lists all SCHEDULE 13G/A filings submitted to the SEC by AMTECH SYSTEMS INC (ASYS), sorted by most recent first. Each row links to the full filing on EdgarLookup. AMTECH SYSTEMS INC has filed 6 SCHEDULE 13G/A documents with the SEC since 1995. To view all SEC filings by AMTECH SYSTEMS INC, see the full filings list.
All
10-K
10-K/A
10-K405
10-K405/A
10-Q
10-Q/A
3
3/A
4
4/A
424B1
424B3
424B5
425
5
8-A12G
8-K
8-K/A
ARS
CORRESP
CT ORDER
DEF 14A
DEFA14A
DEFM14A
DEFR14A
EFFECT
NT 10-K
NT 10-K/A
NT 10-Q
PRE 14A
REGDEX
RW
S-1
S-1/A
S-1MEF
S-3
S-3/A
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13D/A
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0001398344-26-003122 | Feb 13, 2026 | — |
| SCHEDULE 13G/A | — | 0000354204-26-000303 | Jan 21, 2026 | — |
| SCHEDULE 13G/A | — | 0000906304-25-000074 | Apr 4, 2025 | — |
| SCHEDULE 13G/A | — | 0001591546-25-000007 | Feb 12, 2025 | — |
| SCHEDULE 13G/A | — | 0001398344-25-002365 | Feb 11, 2025 | — |
| SCHEDULE 13G/A | — | 0000906304-25-000018 | Jan 28, 2025 | — |