AMTECH SYSTEMS INC — 4/A Filings
11 4/A filings on record
This page lists all 4/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 11 4/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 |
|---|---|---|---|---|
| 4/A | FORM 4/A | 0000720500-17-000062 | Dec 15, 2017 | Nov 22, 2017 |
| 4/A | FORM 4/A | 0001140361-15-012940 | Mar 23, 2015 | Mar 17, 2015 |
| 4/A | PRIMARY DOCUMENT | 0001266457-14-000002 | Feb 13, 2014 | Feb 11, 2014 |
| 4/A | PRIMARY DOCUMENT | 0001266457-11-000008 | Apr 25, 2011 | Apr 20, 2011 |
| 4/A | PRIMARY DOCUMENT | 0001044321-10-000003 | Jan 6, 2010 | Jan 4, 2010 |
| 4/A | AMENDMENTS - STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 16 | 0001206774-09-001772 | Sep 17, 2009 | Sep 9, 2009 |
| 4/A | — | 0001206774-07-002500 | Oct 31, 2007 | Oct 10, 2007 |
| 4/A | PRIMARY DOCUMENT | 0001266457-07-000003 | Sep 25, 2007 | Jul 20, 2007 |
| 4/A | MAIN DOCUMENT DESCRIPTION | 0001209191-07-012702 | Feb 22, 2007 | Feb 19, 2007 |
| 4/A | PRIMARY DOCUMENT | 0001361620-06-000004 | Dec 13, 2006 | Dec 8, 2006 |
| 4/A | — | 0001206774-06-000132 | Jan 30, 2006 | Jul 8, 2005 |