GEOSPACE TECHNOLOGIES CORP — SC 13G/A Filings
90 SC 13G/A filings on record
This page lists all SC 13G/A filings submitted to the SEC by GEOSPACE TECHNOLOGIES CORP (GEOS), sorted by most recent first. Each row links to the full filing on EdgarLookup. GEOSPACE TECHNOLOGIES CORP has filed 90 SC 13G/A documents with the SEC since 1997. To view all SEC filings by GEOSPACE TECHNOLOGIES CORP, see the full filings list.
All
10-K
10-K/A
10-K405
10-Q
10-Q/A
144
3
3/A
4
4/A
424B1
424B3
424B4
8-A12B
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEFA14A
EFFECT
FWP
NT 10-Q
PRE 14A
S-1
S-1/A
S-3
S-3/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SC 13G/A | FORM 13G/A GEOS 12-31-23 | 0001050442-24-000006 | Feb 14, 2024 | — |
| SC 13G/A | — | 0001398344-24-002392 | Feb 9, 2024 | — |
| SC 13G/A | TIETON CAPITAL MANAGEMENT 13G/A | 0001381954-24-000004 | Feb 1, 2024 | — |
| SC 13G/A | — | 0001398344-23-019123 | Oct 10, 2023 | — |
| SC 13G/A | GEOS 13G-A 2022-12-31 | 0001050442-23-000004 | Feb 14, 2023 | — |
| SC 13G/A | — | 0001144969-23-000004 | Feb 13, 2023 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000354204-23-001393 | Feb 10, 2023 | — |
| SC 13G/A | — | 0000315066-22-001581 | May 10, 2022 | — |
| SC 13G/A | 13G/A GEOS 2021-12-31 | 0001050442-22-000005 | Feb 15, 2022 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-22-017634 | Feb 10, 2022 | — |
| SC 13G/A | — | 0000315066-22-000949 | Feb 9, 2022 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000354204-22-001550 | Feb 8, 2022 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000354204-21-000129 | Feb 12, 2021 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-21-018170 | Feb 10, 2021 | — |
| SC 13G/A | — | 0000315066-21-001019 | Feb 8, 2021 | — |
| SC 13G/A | — | 0000834237-21-000075 | Jan 8, 2021 | — |
| SC 13G/A | — | 0000834237-20-010206 | Sep 9, 2020 | — |
| SC 13G/A | — | 0000834237-20-010008 | Jul 10, 2020 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-20-018766 | Feb 12, 2020 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001258897-20-001006 | Feb 12, 2020 | — |
| SC 13G/A | — | 0000315066-20-000959 | Feb 7, 2020 | — |
| SC 13G/A | AMENDMENT NO. 1 TO THE SCHEDULE 13G | 0001013594-20-000041 | Jan 21, 2020 | — |
| SC 13G/A | — | 0000834237-20-000042 | Jan 10, 2020 | — |
| SC 13G/A | — | 0000315066-19-001096 | Feb 13, 2019 | — |
| SC 13G/A | — | 0000932471-19-004930 | Feb 11, 2019 | — |
| SC 13G/A | — | 0000215457-19-001647 | Jan 28, 2019 | — |
| SC 13G/A | — | 0001398344-18-008754 | Jun 8, 2018 | — |
| SC 13G/A | — | 0001659213-18-000001 | Feb 15, 2018 | — |
| SC 13G/A | — | 0001398344-18-002256 | Feb 14, 2018 | — |
| SC 13G/A | — | 0000315066-18-001288 | Feb 13, 2018 | — |
| SC 13G/A | — | 0000215457-18-001441 | Jan 19, 2018 | — |
| SC 13G/A | — | 0001398344-17-001696 | Feb 9, 2017 | — |
| SC 13G/A | — | 0000215457-17-000400 | Jan 12, 2017 | — |
| SC 13G/A | — | 0001546927-17-000004 | Jan 11, 2017 | — |
| SC 13G/A | — | 0000215457-16-006722 | Sep 9, 2016 | — |
| SC 13G/A | — | 0001390777-16-000235 | Jun 9, 2016 | — |
| SC 13G/A | — | 0001398344-16-009958 | Feb 16, 2016 | — |
| SC 13G/A | — | 0000315066-16-005089 | Feb 12, 2016 | — |
| SC 13G/A | — | 0000932471-16-011204 | Feb 10, 2016 | — |
| SC 13G/A | — | 0001390777-16-000179 | Feb 1, 2016 | — |
| SC 13G/A | — | 0000215457-16-002832 | Jan 26, 2016 | — |
| SC 13G/A | — | 0000790502-16-000071 | Jan 26, 2016 | — |
| SC 13G/A | — | 0001546927-16-000331 | Jan 25, 2016 | — |
| SC 13G/A | — | 0000790502-15-000058 | Nov 19, 2015 | — |
| SC 13G/A | — | 0000315066-15-002507 | Mar 10, 2015 | — |
| SC 13G/A | — | 0000932471-15-004253 | Feb 10, 2015 | — |
| SC 13G/A | — | 0001398344-15-000666 | Feb 5, 2015 | — |
| SC 13G/A | — | 0001086364-15-000271 | Jan 15, 2015 | — |
| SC 13G/A | GEOSPACE TECHNOLOGIES CORP. | 0000790502-15-000024 | Jan 8, 2015 | — |
| SC 13G/A | — | 0001398344-14-006191 | Dec 5, 2014 | — |