NATURAL GAS SERVICES GROUP INC — 4/A Filings
23 4/A filings on record
This page lists all 4/A filings submitted to the SEC by NATURAL GAS SERVICES GROUP INC (NGS), sorted by most recent first. Each row links to the full filing on EdgarLookup. NATURAL GAS SERVICES GROUP INC has filed 23 4/A documents with the SEC since 2006. To view all SEC filings by NATURAL GAS SERVICES GROUP INC, see the full filings list.
All
10-K
10-K/A
10-Q
10-Q/A
10KSB
10KSB/A
10QSB
10QSB/A
144
25
3
3/A
4
4/A
424B1
424B3
424B5
5
8-A12B
8-K
8-K/A
ARS
CERTAMX
CERTNYS
CORRESP
DEF 14A
DEFA14A
EFFECT
NT 10-K
NT 10-Q
POS AM
POS462B
PRE 14A
S-1
S-1/A
S-1MEF
S-3
S-3/A
S-8
SB-2
SB-2/A
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13D/A
SCHEDULE 13G
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 4/A | PRIMARY DOCUMENT | 0001084991-25-000094 | Jun 17, 2025 | Jun 13, 2025 |
| 4/A | PRIMARY DOCUMENT | 0001084991-24-000124 | Nov 15, 2024 | Aug 20, 2024 |
| 4/A | PRIMARY DOCUMENT | 0001084991-24-000111 | Nov 13, 2024 | Aug 20, 2024 |
| 4/A | PRIMARY DOCUMENT | 0001084991-24-000039 | May 13, 2024 | May 9, 2024 |
| 4/A | PRIMARY DOCUMENT | 0001084991-23-000061 | May 15, 2023 | Apr 25, 2023 |
| 4/A | PRIMARY DOCUMENT | 0001084991-23-000049 | May 3, 2023 | Apr 28, 2023 |
| 4/A | PRIMARY DOCUMENT | 0001084991-21-000030 | Apr 2, 2021 | Mar 29, 2021 |
| 4/A | PRIMARY DOCUMENT | 0001084991-21-000029 | Apr 2, 2021 | Mar 18, 2021 |
| 4/A | PRIMARY DOCUMENT | 0001084991-18-000005 | Jan 26, 2018 | Jan 23, 2018 |
| 4/A | PRIMARY DOCUMENT | 0001084991-18-000004 | Jan 26, 2018 | Jan 17, 2018 |
| 4/A | PRIMARY DOCUMENT | 0001084991-17-000019 | Mar 15, 2017 | Feb 14, 2017 |
| 4/A | FORM 4/A SUBMISSION | 0000899243-16-012897 | Feb 9, 2016 | Jan 6, 2016 |
| 4/A | MAIN DOCUMENT DESCRIPTION | 0001209191-12-006875 | Feb 2, 2012 | Jan 25, 2012 |
| 4/A | MAIN DOCUMENT DESCRIPTION | 0001209191-12-006874 | Feb 2, 2012 | Jan 25, 2012 |
| 4/A | MAIN DOCUMENT DESCRIPTION | 0001209191-10-061124 | Dec 16, 2010 | Dec 13, 2010 |
| 4/A | — | 0001010549-07-000248 | Mar 23, 2007 | Dec 29, 2006 |
| 4/A | — | 0001010549-07-000247 | Mar 23, 2007 | Dec 29, 2006 |
| 4/A | — | 0001010549-07-000246 | Mar 23, 2007 | Dec 29, 2006 |
| 4/A | — | 0001010549-07-000242 | Mar 23, 2007 | Dec 29, 2006 |
| 4/A | — | 0001010549-07-000240 | Mar 23, 2007 | Dec 29, 2006 |
| 4/A | MAIN DOCUMENT DESCRIPTION | 0001209191-03-009612 | Jul 2, 2003 | Dec 31, 2002 |
| 4/A | FORM 4 FOR J. GRISBY FILED ON 02/20/2003 | 0001181431-03-003037 | Feb 20, 2003 | Oct 24, 2002 |
| 4/A | CHARLES G. CURTIS AMENDED FORM 4 FILED ON 10/28/2002 | 0001181431-02-001432 | Oct 28, 2002 | Oct 24, 2002 |