GEOSPACE TECHNOLOGIES CORP — SCHEDULE 13G/A Filings
11 SCHEDULE 13G/A filings on record
This page lists all SCHEDULE 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 11 SCHEDULE 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 |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-001309 | Mar 26, 2026 | — |
| SCHEDULE 13G/A | — | 0001050442-26-000005 | Feb 17, 2026 | — |
| SCHEDULE 13G/A | — | 0001050442-25-000039 | Nov 14, 2025 | — |
| SCHEDULE 13G/A | — | 0000102909-25-000177 | Oct 30, 2025 | — |
| SCHEDULE 13G/A | — | 0000354204-25-001276 | Oct 9, 2025 | — |
| SCHEDULE 13G/A | — | 0001050442-25-000026 | Aug 14, 2025 | — |
| SCHEDULE 13G/A | — | 0002052113-25-003055 | Jul 17, 2025 | — |
| SCHEDULE 13G/A | — | 0001050442-25-000014 | May 15, 2025 | — |
| SCHEDULE 13G/A | — | 0001050442-25-000004 | Feb 14, 2025 | — |
| SCHEDULE 13G/A | — | 0001941040-25-000118 | Feb 11, 2025 | — |
| SCHEDULE 13G/A | — | 0001050442-24-000022 | Nov 14, 2024 | — |