AMTECH SYSTEMS INC — All Filings
949 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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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 |
|---|---|---|---|---|
| EFFECT | — | 9999999995-26-000911 | Mar 23, 2026 | — |
| S-3 | S-3 | 0000720500-26-000002 | Mar 13, 2026 | — |
| 4 | 4 | 0001256949-26-000003 | Mar 6, 2026 | Mar 4, 2026 |
| 4 | 4 | 0001193125-26-096720 | Mar 6, 2026 | Mar 4, 2026 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-26-024720 | Mar 6, 2026 | Mar 4, 2026 |
| 4 | 4 | 0001193125-26-096467 | Mar 6, 2026 | Mar 4, 2026 |
| 8-K | 8-K | 0000720500-26-000001 | Mar 6, 2026 | Mar 4, 2026 |
| SCHEDULE 13G/A | — | 0001398344-26-003122 | Feb 13, 2026 | — |
| 10-Q | 10-Q | 0001193125-26-039360 | Feb 5, 2026 | Dec 31, 2025 |
| 8-K | 8-K | 0001193125-26-039351 | Feb 5, 2026 | — |
| ARS | ARS | 0001193125-26-020766 | Jan 23, 2026 | Sep 30, 2025 |
| DEF 14A | DEF 14A | 0001193125-26-020762 | Jan 23, 2026 | Mar 4, 2026 |
| SCHEDULE 13G/A | — | 0000354204-26-000303 | Jan 21, 2026 | — |
| 8-K | 8-K | 0001193125-25-319228 | Dec 15, 2025 | Dec 9, 2025 |
| 8-K | 8-K | 0001193125-25-314185 | Dec 10, 2025 | — |
| 10-K | 10-K | 0001193125-25-314147 | Dec 10, 2025 | Sep 30, 2025 |
| 8-K | 8-K | 0001193125-25-304022 | Dec 1, 2025 | Nov 26, 2025 |
| 8-K | 8-K | 0001193125-25-303881 | Dec 1, 2025 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-086997 | Sep 3, 2025 | Sep 2, 2025 |
| 4 | 4 | 0000950170-25-109373 | Aug 15, 2025 | Aug 8, 2025 |
| 10-Q | 10-Q | 0000950170-25-104002 | Aug 6, 2025 | Jun 30, 2025 |
| 8-K | 8-K | 0000950170-25-103999 | Aug 6, 2025 | — |
| SD | SD | 0000950170-25-079283 | May 30, 2025 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-050117 | May 16, 2025 | May 14, 2025 |
| 4 | 4 | 0000950170-25-073717 | May 16, 2025 | May 14, 2025 |
| 8-K | 8-K | 0000950170-25-069140 | May 12, 2025 | — |
| 10-Q | 10-Q | 0000950170-25-069135 | May 12, 2025 | Mar 31, 2025 |
| 8-K | 8-K | 0000950170-25-052548 | Apr 9, 2025 | — |
| SCHEDULE 13G/A | — | 0000906304-25-000074 | Apr 4, 2025 | — |
| 4 | 4 | 0000950170-25-043411 | Mar 21, 2025 | Mar 19, 2025 |
| S-8 | S-8 | 0000950170-25-041938 | Mar 19, 2025 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-022964 | Mar 12, 2025 | Mar 10, 2025 |
| 4 | 4 | 0000950170-25-035616 | Mar 7, 2025 | Mar 5, 2025 |
| 4 | 4 | 0000950170-25-035589 | Mar 7, 2025 | Mar 5, 2025 |
| 4 | 4 | 0000950170-25-035575 | Mar 7, 2025 | Mar 5, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-021752 | Mar 7, 2025 | Mar 6, 2025 |
| 8-K | 8-K | 0000950170-25-034957 | Mar 7, 2025 | Mar 5, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-020979 | Mar 5, 2025 | Mar 3, 2025 |
| DEFA14A | DEFA14A | 0000950170-25-025653 | Feb 24, 2025 | — |
| SCHEDULE 13D/A | — | 0001104659-25-014731 | Feb 18, 2025 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-014728 | Feb 18, 2025 | Feb 13, 2025 |
| SCHEDULE 13G/A | — | 0001591546-25-000007 | Feb 12, 2025 | — |
| SCHEDULE 13G/A | — | 0001398344-25-002365 | Feb 11, 2025 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-010932 | Feb 10, 2025 | Feb 7, 2025 |
| 8-K | 8-K | 0000950170-25-014472 | Feb 5, 2025 | — |
| 10-Q | 10-Q | 0000950170-25-014465 | Feb 5, 2025 | Dec 31, 2024 |
| 3 | 3 | 0000950170-25-012331 | Feb 3, 2025 | — |
| SCHEDULE 13G/A | — | 0000906304-25-000018 | Jan 28, 2025 | — |
| ARS | ARS | 0000950170-25-008847 | Jan 24, 2025 | Sep 30, 2024 |
| DEF 14A | DEF 14A | 0000950170-25-008792 | Jan 24, 2025 | Mar 5, 2025 |