GEOSPACE TECHNOLOGIES CORP

Symbol
GEOS on Nasdaq
Business address
7007 Pinemont Dr., Houston, TX, 77040
State of incorporation
TX
Fiscal year end
30 September
Former names
OYO GEOSPACE CORP (to 01 Oct 2012)
Get insider transactions for this issuer
GEOSPACE TECHNOLOGIES CORP has filed 1,002 SEC EDGAR filings since 30 Sep 1997

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
DEF 14A Open Document | Data Open Filing FORM DEF 14A 23 Dec 2025 05 Feb 2026 001-13601
DEFA14A Open Document Open Filing FORM DEFA14A 23 Dec 2025 001-13601
4 Open Document Open Filing FORM 4 05 Dec 2025 05 Dec 2025
4 Open Document Open Filing FORM 4 05 Dec 2025 05 Dec 2025
4 Open Document Open Filing FORM 4 05 Dec 2025 05 Dec 2025
4/A Open Document Open Filing FORM 4/A 05 Dec 2025 20 Nov 2025
4 Open Document Open Filing FORM 4 01 Dec 2025 25 Nov 2025
4 Open Document Open Filing FORM 4 25 Nov 2025 20 Nov 2025
4 Open Document Open Filing FORM 4 25 Nov 2025 20 Nov 2025
4 Open Document Open Filing FORM 4 25 Nov 2025 20 Nov 2025
10-K Open Document | Data Open Filing FORM 10-K 21 Nov 2025 30 Sep 2025 001-13601
8-K Open Document | Data Open Filing FORM 8-K 20 Nov 2025 20 Nov 2025 001-13601
SCHEDULE 13G/A Open Document Open Filing 14 Nov 2025 005-52075
SCHEDULE 13G/A Open Document Open Filing 30 Oct 2025 005-52075
SCHEDULE 13G/A Open Document Open Filing 09 Oct 2025 005-52075
8-K Open Document | Data Open Filing FORM 8-K 04 Sep 2025 29 Aug 2025 001-13601
SCHEDULE 13G/A Open Document Open Filing 14 Aug 2025 005-52075
10-Q Open Document | Data Open Filing FORM 10-Q 08 Aug 2025 30 Jun 2025 001-13601
8-K Open Document | Data Open Filing FORM 8-K 08 Aug 2025 07 Aug 2025 001-13601
SCHEDULE 13G/A Open Document Open Filing 17 Jul 2025 005-52075
SD Open Document Open Filing FORM SD 21 May 2025 001-13601
SCHEDULE 13G/A Open Document Open Filing 15 May 2025 005-52075
10-Q Open Document | Data Open Filing FORM 10-Q 09 May 2025 31 Mar 2025 001-13601
8-K Open Document | Data Open Filing FORM 8-K 09 May 2025 08 May 2025 001-13601
8-K Open Document | Data Open Filing FORM 8-K 04 Mar 2025 27 Feb 2025 001-13601
SCHEDULE 13G/A Open Document Open Filing 14 Feb 2025 005-52075
SCHEDULE 13G/A Open Document Open Filing 11 Feb 2025 005-52075
4 Open Document Open Filing FORM 4 07 Feb 2025 06 Feb 2025
4 Open Document Open Filing FORM 4 07 Feb 2025 06 Feb 2025
4 Open Document Open Filing FORM 4 07 Feb 2025 06 Feb 2025
4 Open Document Open Filing FORM 4 07 Feb 2025 06 Feb 2025
4 Open Document Open Filing FORM 4 07 Feb 2025 06 Feb 2025
4 Open Document Open Filing FORM 4 07 Feb 2025 06 Feb 2025
10-Q Open Document | Data Open Filing FORM 10-Q 06 Feb 2025 31 Dec 2024 001-13601
8-K Open Document | Data Open Filing FORM 8-K 06 Feb 2025 06 Feb 2025 001-13601
8-K Open Document | Data Open Filing FORM 8-K 05 Feb 2025 05 Feb 2025 001-13601
SCHEDULE 13G Open Document Open Filing 23 Jan 2025 005-52075
8-K Open Document | Data Open Filing FORM 8-K 10 Jan 2025 03 Jan 2025 001-13601
DEFA14A Open Document Open Filing FORM DEFA14A 27 Dec 2024 001-13601
DEF 14A Open Document Open Filing FORM DEF 14A 27 Dec 2024 06 Feb 2025 001-13601
3 Open Document Open Filing FORM 3 11 Dec 2024 02 Dec 2024
8-K Open Document | Data Open Filing FORM 8-K 26 Nov 2024 21 Nov 2024 001-13601
4 Open Document Open Filing FORM 4 22 Nov 2024 21 Nov 2024
4 Open Document Open Filing FORM 4 22 Nov 2024 21 Nov 2024
4 Open Document Open Filing FORM 4 22 Nov 2024 21 Nov 2024
10-K Open Document | Data Open Filing FORM 10-K 22 Nov 2024 30 Sep 2024 001-13601
8-K Open Document | Data Open Filing FORM 8-K 21 Nov 2024 21 Nov 2024 001-13601
SCHEDULE 13G/A Open Document Open Filing 14 Nov 2024 005-52075
SC 13G Open Document Open Filing 08 Nov 2024 005-52075
SC 13G Open Document Open Filing 22 Oct 2024 005-52075
4 Open Document Open Filing FORM 4 02 Oct 2024 01 Oct 2024
8-K Open Document | Data Open Filing FORM 8-K 19 Sep 2024 19 Sep 2024 001-13601
10-Q Open Document | Data Open Filing FORM 10-Q 09 Aug 2024 30 Jun 2024 001-13601
8-K Open Document | Data Open Filing FORM 8-K 08 Aug 2024 08 Aug 2024 001-13601
10-K/A Open Document | Data Open Filing FORM 10-K/A 02 Jul 2024 30 Sep 2023 001-13601
10-K/A Open Document | Data Open Filing FORM 10-K/A 02 Jul 2024 30 Sep 2022 001-13601
SD Open Document Open Filing FORM SD 21 May 2024 001-13601
10-Q Open Document | Data Open Filing FORM 10-Q 10 May 2024 31 Mar 2024 001-13601
3/A Open Document Open Filing FORM 3/A 09 May 2024 29 Apr 2024
3 Open Document Open Filing FORM 3 09 May 2024 29 Apr 2024
8-K Open Document | Data Open Filing FORM 8-K 09 May 2024 09 May 2024 001-13601
4 Open Document Open Filing FORM 4 27 Feb 2024 22 Feb 2024
4 Open Document Open Filing FORM 4 26 Feb 2024 22 Feb 2024
144 Open Document Open Filing 21 Feb 2024 001-13601
4/A Open Document Open Filing FORM 4/A 21 Feb 2024 14 Feb 2024
4 Open Document Open Filing FORM 4 21 Feb 2024 14 Feb 2024
144 Open Document Open Filing 14 Feb 2024 001-13601
SC 13G/A Open Document Open Filing FORM 13G/A GEOS 12-31-23 14 Feb 2024 005-52075
SC 13G Open Document Open Filing SCHEDULE 13G 13 Feb 2024 005-52075
SC 13G/A Open Document Open Filing 09 Feb 2024 005-52075
10-Q Open Document | Data Open Filing FORM 10-Q 08 Feb 2024 31 Dec 2023 001-13601
4 Open Document Open Filing OWENS 02-07-24 08 Feb 2024 07 Feb 2024
4 Open Document Open Filing ASHWORTH 02-07-24 08 Feb 2024 07 Feb 2024
8-K Open Document | Data Open Filing FORM 8-K 08 Feb 2024 08 Feb 2024 001-13601
4 Open Document Open Filing ASHWORTH 02-07-24 08 Feb 2024 07 Feb 2024
4 Open Document Open Filing GIESINGER 02-07-24 08 Feb 2024 07 Feb 2024
4 Open Document Open Filing MILES 02-07-24 08 Feb 2024 07 Feb 2024
4 Open Document Open Filing DAVIS 02-07-24 08 Feb 2024 07 Feb 2024
8-K Open Document | Data Open Filing FORM 8-K 07 Feb 2024 07 Feb 2024 001-13601
SC 13G/A Open Document Open Filing TIETON CAPITAL MANAGEMENT 13G/A 01 Feb 2024 005-52075
DEF 14A Open Document Open Filing FORM DEF 14A 03 Jan 2024 08 Feb 2024 001-13601
3 Open Document Open Filing FORM 3 22 Dec 2023 21 Dec 2023
8-K Open Document | Data Open Filing FORM 8-K 21 Dec 2023 21 Dec 2023 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 17 Nov 2023 16 Nov 2023
4 Open Document Open Filing FORM 4 SUBMISSION 17 Nov 2023 16 Nov 2023
4 Open Document Open Filing FORM 4 SUBMISSION 17 Nov 2023 16 Nov 2023
10-K Open Document | Data Open Filing FORM 10-K 17 Nov 2023 30 Sep 2023 001-13601
8-K Open Document | Data Open Filing FORM 8-K 17 Nov 2023 16 Nov 2023 001-13601
SC 13G/A Open Document Open Filing 10 Oct 2023 005-52075
10-Q Open Document | Data Open Filing FORM 10-Q 11 Aug 2023 30 Jun 2023 001-13601
8-K Open Document | Data Open Filing FORM 8-K 10 Aug 2023 10 Aug 2023 001-13601
8-K Open Document | Data Open Filing FORM 8-K 01 Aug 2023 26 Jul 2023 001-13601
8-K Open Document | Data Open Filing FORM 8-K 06 Jul 2023 29 Jun 2023 001-13601
SD Open Document Open Filing FORM SD 17 May 2023 001-13601
10-Q Open Document | Data Open Filing FORM 10-Q 12 May 2023 31 Mar 2023 001-13601
8-K Open Document | Data Open Filing FORM 8-K 11 May 2023 11 May 2023 001-13601
8-K Open Document | Data Open Filing 8-K 28 Feb 2023 27 Feb 2023 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 22 Feb 2023 17 Feb 2023
SC 13G/A Open Document Open Filing GEOS 13G-A 2022-12-31 14 Feb 2023 005-52075
SC 13G/A Open Document Open Filing 13 Feb 2023 005-52075
SC 13G/A Open Document Open Filing SEC SCHEDULE 13G 10 Feb 2023 005-52075
4/A Open Document Open Filing FORM 4/A SUBMISSION 10 Feb 2023 09 Feb 2023
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2023 09 Feb 2023
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2023 09 Feb 2023
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2023 09 Feb 2023
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2023 09 Feb 2023
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2023 09 Feb 2023
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2023 09 Feb 2023
8-K Open Document | Data Open Filing 8-K 09 Feb 2023 09 Feb 2023 001-13601
10-Q Open Document | Data Open Filing 10-Q 09 Feb 2023 31 Dec 2022 001-13601
8-K Open Document | Data Open Filing 8-K 08 Feb 2023 08 Feb 2023 001-13601
SC 13G Open Document Open Filing TIETON CAPITAL MANAGEMENT 13G 25 Jan 2023 005-52075
SC 13G Open Document Open Filing 10 Jan 2023 005-52075
DEF 14A Open Document Open Filing DEF 14A 04 Jan 2023 09 Feb 2023 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 21 Nov 2022 21 Nov 2022
4 Open Document Open Filing FORM 4 SUBMISSION 21 Nov 2022 21 Nov 2022
4 Open Document Open Filing FORM 4 SUBMISSION 21 Nov 2022 21 Nov 2022
4 Open Document Open Filing FORM 4 SUBMISSION 21 Nov 2022 21 Nov 2022
10-K Open Document | Data Open Filing 10-K 18 Nov 2022 30 Sep 2022 001-13601
8-K Open Document | Data Open Filing 8-K 18 Nov 2022 17 Nov 2022 001-13601
8-K Open Document | Data Open Filing 8-K 04 Nov 2022 03 Nov 2022 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 07 Sep 2022 02 Sep 2022
4 Open Document Open Filing FORM 4 SUBMISSION 01 Sep 2022 30 Aug 2022
4 Open Document Open Filing FORM 4 SUBMISSION 23 Aug 2022 19 Aug 2022
4 Open Document Open Filing FORM 4 SUBMISSION 17 Aug 2022 15 Aug 2022
10-Q Open Document | Data Open Filing 10-Q 10 Aug 2022 30 Jun 2022 001-13601
8-K Open Document | Data Open Filing 8-K 10 Aug 2022 09 Aug 2022 001-13601
8-K Open Document | Data Open Filing 8-K 09 Aug 2022 05 Aug 2022 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 19 May 2022 17 May 2022
SD Open Document Open Filing SD 19 May 2022 001-13601
10-Q Open Document | Data Open Filing 10-Q 12 May 2022 31 Mar 2022 001-13601
8-K Open Document | Data Open Filing 8-K 12 May 2022 11 May 2022 001-13601
8-K Open Document | Data Open Filing 8-K 10 May 2022 06 May 2022 001-13601
SC 13G/A Open Document Open Filing 10 May 2022 005-52075
8-K Open Document | Data Open Filing 8-K 28 Apr 2022 27 Apr 2022 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 28 Feb 2022 25 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 25 Feb 2022 23 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 24 Feb 2022 22 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 17 Feb 2022 17 Feb 2022
SC 13G/A Open Document Open Filing 13G/A GEOS 2021-12-31 15 Feb 2022 005-52075
SC 13G/A Open Document Open Filing SCHEDULE 13G/A 10 Feb 2022 005-52075
SC 13G/A Open Document Open Filing 09 Feb 2022 005-52075
SC 13G Open Document Open Filing 08 Feb 2022 005-52075
SC 13G/A Open Document Open Filing SEC SCHEDULE 13G 08 Feb 2022 005-52075
4 Open Document Open Filing FORM 4 SUBMISSION 03 Feb 2022 02 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Feb 2022 02 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Feb 2022 02 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Feb 2022 02 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Feb 2022 02 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Feb 2022 02 Feb 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Feb 2022 02 Feb 2022
8-K Open Document | Data Open Filing 8-K 02 Feb 2022 01 Feb 2022 001-13601
10-Q Open Document | Data Open Filing 10-Q 02 Feb 2022 31 Dec 2021 001-13601
8-K Open Document | Data Open Filing 8-K 20 Jan 2022 19 Jan 2022 001-13601
DEF 14A Open Document Open Filing DEF 14A 03 Jan 2022 02 Feb 2022 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 22 Nov 2021 18 Nov 2021
4 Open Document Open Filing FORM 4 SUBMISSION 22 Nov 2021 18 Nov 2021
4 Open Document Open Filing FORM 4 SUBMISSION 22 Nov 2021 18 Nov 2021
4 Open Document Open Filing FORM 4 SUBMISSION 22 Nov 2021 18 Nov 2021
10-K Open Document | Data Open Filing 10-K 2021 19 Nov 2021 30 Sep 2021 001-13601
8-K Open Document | Data Open Filing 8-K 19 Nov 2021 18 Nov 2021 001-13601
8-K Open Document | Data Open Filing 8-K 04 Nov 2021 03 Nov 2021 001-13601
S-8 Open Document Open Filing S-8 27 Aug 2021 333-259131
4 Open Document Open Filing FORM 4 SUBMISSION 12 Aug 2021 12 Aug 2021
10-Q Open Document | Data Open Filing 3RD QTR 2021 FORM 10-Q 06 Aug 2021 30 Jun 2021 001-13601
8-K Open Document | Data Open Filing 8-K 06 Aug 2021 05 Aug 2021 001-13601
8-K Open Document | Data Open Filing 8-K 22 Jul 2021 21 Jul 2021 001-13601
SD Open Document Open Filing SD 24 May 2021 001-13601
10-Q Open Document | Data Open Filing GEOS10Q-03-31-21 07 May 2021 31 Mar 2021 001-13601
8-K Open Document | Data Open Filing 8-K 07 May 2021 06 May 2021 001-13601
8-K Open Document | Data Open Filing 8-K 28 Apr 2021 27 Apr 2021 001-13601
8-K Open Document | Data Open Filing 8-K 29 Mar 2021 25 Mar 2021 001-13601
SC 13G Open Document Open Filing FORM 13G 2020-12-31 16 Feb 2021 005-52075
SC 13G/A Open Document Open Filing SEC SCHEDULE 13G 12 Feb 2021 005-52075
SC 13G/A Open Document Open Filing SCHEDULE 13G/A 10 Feb 2021 005-52075
SC 13G/A Open Document Open Filing 08 Feb 2021 005-52075
4 Open Document Open Filing FORM 4 SUBMISSION 05 Feb 2021 04 Feb 2021
4 Open Document Open Filing FORM 4 SUBMISSION 05 Feb 2021 04 Feb 2021
4 Open Document Open Filing FORM 4 SUBMISSION 05 Feb 2021 04 Feb 2021
4 Open Document Open Filing FORM 4 SUBMISSION 05 Feb 2021 04 Feb 2021
4 Open Document Open Filing FORM 4 SUBMISSION 05 Feb 2021 04 Feb 2021
4 Open Document Open Filing FORM 4 SUBMISSION 05 Feb 2021 04 Feb 2021
4 Open Document Open Filing FORM 4 SUBMISSION 05 Feb 2021 04 Feb 2021
8-K Open Document | Data Open Filing 8-K 05 Feb 2021 04 Feb 2021 001-13601
10-Q Open Document | Data Open Filing 1ST QTR FORM 10-Q 12-31-20 04 Feb 2021 31 Dec 2020 001-13601
8-K Open Document | Data Open Filing 8-K 04 Feb 2021 03 Feb 2021 001-13601
8-K Open Document | Data Open Filing 8-K 22 Jan 2021 22 Jan 2021 001-13601
SC 13G/A Open Document Open Filing 08 Jan 2021 005-52075
DEF 14A Open Document Open Filing DEF 14A 30 Dec 2020 04 Feb 2021 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 11 Dec 2020 10 Dec 2020
4 Open Document Open Filing FORM 4 SUBMISSION 11 Dec 2020 09 Dec 2020
4 Open Document Open Filing FORM 4 SUBMISSION 02 Dec 2020 01 Dec 2020
3 Open Document Open Filing FORM 3 SUBMISSION 01 Dec 2020 01 Dec 2020
3 Open Document Open Filing FORM 3 SUBMISSION 01 Dec 2020 01 Dec 2020
4 Open Document Open Filing FORM 4 SUBMISSION 30 Nov 2020 25 Nov 2020
4 Open Document Open Filing FORM 4 SUBMISSION 27 Nov 2020 24 Nov 2020
8-K Open Document | Data Open Filing 8-K 23 Nov 2020 17 Nov 2020 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 20 Nov 2020 19 Nov 2020
4 Open Document Open Filing FORM 4 SUBMISSION 20 Nov 2020 19 Nov 2020
4 Open Document Open Filing FORM 4 SUBMISSION 20 Nov 2020 19 Nov 2020
4 Open Document Open Filing FORM 4 SUBMISSION 20 Nov 2020 19 Nov 2020
10-K Open Document | Data Open Filing 10-K 20 Nov 2020 30 Sep 2020 001-13601
8-K Open Document | Data Open Filing 8-K 20 Nov 2020 19 Nov 2020 001-13601
8-K Open Document | Data Open Filing 8-K 12 Nov 2020 09 Nov 2020 001-13601
8-K Open Document | Data Open Filing 8-K 10 Nov 2020 09 Nov 2020 001-13601
SC 13G/A Open Document Open Filing 09 Sep 2020 005-52075
SC 13D/A Open Document Open Filing AMENDMENT NO. 1 TO THE SCHEDULE 13D 26 Aug 2020 005-52075
8-K Open Document | Data Open Filing 8-K 11 Aug 2020 06 Aug 2020 001-13601
10-Q Open Document | Data Open Filing 10-Q 07 Aug 2020 30 Jun 2020 001-13601
8-K Open Document Open Filing 8-K 07 Aug 2020 06 Aug 2020 001-13601
8-K Open Document Open Filing 8-K 22 Jul 2020 22 Jul 2020 001-13601
SC 13D/A Open Document Open Filing 15 Jul 2020 005-52075
SC 13G/A Open Document Open Filing 10 Jul 2020 005-52075
8-K Open Document Open Filing 8-K 02 Jul 2020 30 Jun 2020 001-13601
8-K Open Document Open Filing 8-K 28 May 2020 26 May 2020 001-13601
SC 13D Open Document Open Filing SCHEDULE 13D DATED MAY 26, 2020 27 May 2020 005-52075
SC 13G Open Document Open Filing MAY 18, 2020 18 May 2020 005-52075
SD Open Document Open Filing SD 18 May 2020 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 15 May 2020 14 May 2020
4 Open Document Open Filing FORM 4 SUBMISSION 14 May 2020 13 May 2020
4 Open Document Open Filing FORM 4 SUBMISSION 14 May 2020 13 May 2020
4 Open Document Open Filing FORM 4 SUBMISSION 13 May 2020 12 May 2020
8-K Open Document Open Filing 8-K 08 May 2020 07 May 2020 001-13601
10-Q Open Document | Data Open Filing GEOS-10Q-2019-03-31 08 May 2020 31 Mar 2020 001-13601
8-K Open Document Open Filing 8-K 24 Apr 2020 23 Apr 2020 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 06 Apr 2020 06 Apr 2020
SC 13D Open Document Open Filing SC 13D 18 Feb 2020 005-52075
SC 13G/A Open Document Open Filing SCHEDULE 13G/A 12 Feb 2020 005-52075
SC 13G/A Open Document Open Filing SCHEDULE 13G/A 12 Feb 2020 005-52075
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2020 06 Feb 2020
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2020 06 Feb 2020
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2020 06 Feb 2020
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2020 06 Feb 2020
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2020 06 Feb 2020
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2020 06 Feb 2020
SC 13G/A Open Document Open Filing 07 Feb 2020 005-52075
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2020 06 Feb 2020
8-K Open Document Open Filing 8-K 07 Feb 2020 06 Feb 2020 001-13601
10-Q Open Document | Data Open Filing GEOS-10Q-1Q2020 06 Feb 2020 31 Dec 2019 001-13601
8-K Open Document Open Filing 8-K 06 Feb 2020 05 Feb 2020 001-13601
8-K Open Document Open Filing 8-K 27 Jan 2020 24 Jan 2020 001-13601
SC 13G/A Open Document Open Filing AMENDMENT NO. 1 TO THE SCHEDULE 13G 21 Jan 2020 005-52075
SC 13G/A Open Document Open Filing 10 Jan 2020 005-52075
3 Open Document Open Filing FORM 3 SUBMISSION 06 Jan 2020 01 Jan 2020
DEF 14A Open Document Open Filing DEF 14A 06 Jan 2020 06 Feb 2020 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 05 Dec 2019 03 Dec 2019
4 Open Document Open Filing FORM 4 SUBMISSION 26 Nov 2019 26 Nov 2019
4 Open Document Open Filing FORM 4 SUBMISSION 26 Nov 2019 26 Nov 2019
4 Open Document Open Filing FORM 4 SUBMISSION 26 Nov 2019 26 Nov 2019
4/A Open Document Open Filing FORM 4/A SUBMISSION 26 Nov 2019 21 Nov 2019
4 Open Document Open Filing FORM 4 SUBMISSION 22 Nov 2019 21 Nov 2019
4 Open Document Open Filing FORM 4 SUBMISSION 22 Nov 2019 21 Nov 2019
4 Open Document Open Filing FORM 4 SUBMISSION 22 Nov 2019 21 Nov 2019
4 Open Document Open Filing FORM 4 SUBMISSION 22 Nov 2019 21 Nov 2019
8-K Open Document Open Filing 8-K 22 Nov 2019 21 Nov 2019 001-13601
10-K Open Document | Data Open Filing GEOS-10K-2019 22 Nov 2019 30 Sep 2019 001-13601
8-K Open Document Open Filing 8-K 18 Nov 2019 15 Nov 2019 001-13601
8-K Open Document Open Filing 8-K 08 Nov 2019 07 Nov 2019 001-13601
8-K Open Document Open Filing 8-K 12 Aug 2019 08 Aug 2019 001-13601
8-K Open Document Open Filing 8-K 09 Aug 2019 08 Aug 2019 001-13601
10-Q Open Document | Data Open Filing GEO-10Q-2019-06-30 09 Aug 2019 30 Jun 2019 001-13601
8-K Open Document Open Filing 8-K 25 Jul 2019 24 Jul 2019 001-13601
8-K Open Document Open Filing 8-K 04 Jun 2019 03 Jun 2019 001-13601
SD Open Document Open Filing FORM SD 24 May 2019 001-13601
10-Q Open Document | Data Open Filing 10-Q 03-31-19 03 May 2019 31 Mar 2019 001-13601
8-K Open Document Open Filing 8-K 03 May 2019 02 May 2019 001-13601
8-K Open Document Open Filing 8-K 23 Apr 2019 23 Apr 2019 001-13601
8-K Open Document Open Filing 8-K 01 Apr 2019 29 Mar 2019 001-13601
SC 13G/A Open Document Open Filing 13 Feb 2019 005-52075
SC 13G/A Open Document Open Filing 11 Feb 2019 005-52075
SC 13D/A Open Document Open Filing FEBRUARY 8, 2019 08 Feb 2019 005-52075
8-K Open Document Open Filing 8-K 08 Feb 2019 06 Feb 2019 001-13601
SC 13G Open Document Open Filing SCHEDULE 13G 08 Feb 2019 005-52075
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2019 06 Feb 2019
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2019 06 Feb 2019
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2019 06 Feb 2019
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2019 06 Feb 2019
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2019 06 Feb 2019
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2019 06 Feb 2019
4 Open Document Open Filing FORM 4 SUBMISSION 07 Feb 2019 06 Feb 2019
8-K Open Document Open Filing 8-K 06 Feb 2019 05 Feb 2019 001-13601
10-Q Open Document | Data Open Filing GEOS-10Q-2018-12-31 06 Feb 2019 31 Dec 2018 001-13601
8-K Open Document Open Filing 8-K 29 Jan 2019 28 Jan 2019 001-13601
SC 13G/A Open Document Open Filing 28 Jan 2019 005-52075
DEF 14A Open Document Open Filing DEF 14A 04 Jan 2019 06 Feb 2019 001-13601
SC 13D/A Open Document Open Filing 13DA 12 Dec 2018 005-52075
4 Open Document Open Filing FORM 4 SUBMISSION 07 Dec 2018 06 Dec 2018
4 Open Document Open Filing FORM 4 SUBMISSION 28 Nov 2018 27 Nov 2018
4 Open Document Open Filing FORM 4 SUBMISSION 28 Nov 2018 27 Nov 2018
4 Open Document Open Filing FORM 4 SUBMISSION 28 Nov 2018 27 Nov 2018
4 Open Document Open Filing FORM 4 SUBMISSION 28 Nov 2018 27 Nov 2018
8-K Open Document Open Filing FORM 8-K 26 Nov 2018 26 Nov 2018 001-13601
8-K Open Document Open Filing 8-K 16 Nov 2018 15 Nov 2018 001-13601
10-K Open Document | Data Open Filing 10-K 2018 16 Nov 2018 30 Sep 2018 001-13601
8-K Open Document Open Filing 8-K 13 Nov 2018 08 Nov 2018 001-13601
8-K Open Document Open Filing 8-K 06 Nov 2018 05 Nov 2018 001-13601
4/A Open Document Open Filing FORM 4/A SUBMISSION 11 Sep 2018 07 Sep 2018
4 Open Document Open Filing FORM 4 SUBMISSION 11 Sep 2018 07 Sep 2018
10-Q Open Document | Data Open Filing 10-Q 06-30-18 03 Aug 2018 30 Jun 2018 001-13601
8-K Open Document Open Filing 8-K 03 Aug 2018 02 Aug 2018 001-13601
8-K Open Document Open Filing FORM 8-K 30 Jul 2018 27 Jul 2018 001-13601
8-K Open Document Open Filing 8-K 20 Jul 2018 19 Jul 2018 001-13601
SC 13G/A Open Document Open Filing 08 Jun 2018 005-52075
SD Open Document Open Filing SD 22 May 2018 001-13601
SC 13D/A Open Document Open Filing 15 May 2018 005-52075
10-Q Open Document | Data Open Filing 10-Q-20180331 04 May 2018 31 Mar 2018 001-13601
8-K Open Document Open Filing 8-K 04 May 2018 03 May 2018 001-13601
8-K Open Document Open Filing 8-K 24 Apr 2018 24 Apr 2018 001-13601
SC 13G Open Document Open Filing APRIL 23, 2018 23 Apr 2018 005-52075
SC 13D Open Document Open Filing SC 13D FILING STATEMENT 03 Apr 2018 005-52075
8-K Open Document Open Filing 8-K 01 Mar 2018 27 Feb 2018 001-13601
SC 13G/A Open Document Open Filing 15 Feb 2018 005-52075
SC 13G/A Open Document Open Filing 14 Feb 2018 005-52075
SC 13G/A Open Document Open Filing 13 Feb 2018 005-52075
8-K Open Document Open Filing FORM 8-K 12 Feb 2018 07 Feb 2018 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 08 Feb 2018 07 Feb 2018
4 Open Document Open Filing FORM 4 SUBMISSION 08 Feb 2018 07 Feb 2018
4 Open Document Open Filing FORM 4 SUBMISSION 08 Feb 2018 07 Feb 2018
4 Open Document Open Filing FORM 4 SUBMISSION 08 Feb 2018 07 Feb 2018
4 Open Document Open Filing FORM 4 SUBMISSION 08 Feb 2018 07 Feb 2018
4 Open Document Open Filing FORM 4 SUBMISSION 08 Feb 2018 07 Feb 2018
4 Open Document Open Filing FORM 4 SUBMISSION 08 Feb 2018 07 Feb 2018
SC 13G Open Document Open Filing 08 Feb 2018 005-52075
8-K Open Document Open Filing 8-K 08 Feb 2018 07 Feb 2018 001-13601
10-Q Open Document | Data Open Filing 10-Q 07 Feb 2018 31 Dec 2017 001-13601
8-K Open Document Open Filing 8-K 07 Feb 2018 06 Feb 2018 001-13601
8-K Open Document Open Filing 8-K 30 Jan 2018 29 Jan 2018 001-13601
SC 13G/A Open Document Open Filing 19 Jan 2018 005-52075
DEF 14A Open Document Open Filing DEF 14A 03 Jan 2018 07 Feb 2018 001-13601
8-K Open Document Open Filing FORM 8-K 15 Dec 2017 14 Dec 2017 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 11 Dec 2017 07 Dec 2017
4 Open Document Open Filing FORM 4 SUBMISSION 06 Dec 2017 06 Dec 2017
10-K Open Document | Data Open Filing GEOS-10K-093017 01 Dec 2017 30 Sep 2017 001-13601
8-K Open Document Open Filing FORM 8-K 01 Dec 2017 30 Nov 2017 001-13601
8-K Open Document Open Filing 8-K 22 Nov 2017 16 Nov 2017 001-13601
8-K Open Document Open Filing FORM 8-K 17 Nov 2017 17 Nov 2017 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 17 Nov 2017 16 Nov 2017
4 Open Document Open Filing FORM 4 SUBMISSION 17 Nov 2017 16 Nov 2017
4 Open Document Open Filing FORM 4 SUBMISSION 17 Nov 2017 16 Nov 2017
4 Open Document Open Filing FORM 4 SUBMISSION 17 Nov 2017 16 Nov 2017
8-K Open Document Open Filing 8-K 27 Oct 2017 25 Oct 2017 001-13601
8-K Open Document Open Filing 8-K 22 Sep 2017 21 Sep 2017 001-13601
10-Q Open Document | Data Open Filing GEOS-10Q-20170630 04 Aug 2017 30 Jun 2017 001-13601
8-K Open Document | Data Open Filing 8-K 04 Aug 2017 03 Aug 2017 001-13601
8-K Open Document | Data Open Filing 8-K 26 Jul 2017 25 Jul 2017 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 05 Jun 2017 02 Jun 2017
4 Open Document Open Filing FORM 4 SUBMISSION 02 Jun 2017 31 May 2017
4 Open Document Open Filing FORM 4 SUBMISSION 15 May 2017 15 May 2017
SD Open Document Open Filing SD 11 May 2017 001-13601
8-K/A Open Document Open Filing 8-K/A 10 May 2017 09 Feb 2017 001-13601
10-Q Open Document | Data Open Filing 10-Q 05 May 2017 31 Mar 2017 001-13601
8-K Open Document Open Filing 8-K 05 May 2017 04 May 2017 001-13601
8-K Open Document Open Filing FORM 8-K 21 Apr 2017 21 Apr 2017 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2017 09 Feb 2017
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2017 09 Feb 2017
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2017 09 Feb 2017
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2017 09 Feb 2017
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2017 09 Feb 2017
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2017 09 Feb 2017
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2017 09 Feb 2017
8-K Open Document Open Filing 8-K 10 Feb 2017 09 Feb 2017 001-13601
SC 13G/A Open Document Open Filing 09 Feb 2017 005-52075
10-Q Open Document | Data Open Filing 10-Q 09 Feb 2017 31 Dec 2016 001-13601
8-K Open Document Open Filing 8-K 08 Feb 2017 08 Feb 2017 001-13601
8-K Open Document Open Filing FORM 8-K 30 Jan 2017 27 Jan 2017 001-13601
SC 13G/A Open Document Open Filing 12 Jan 2017 005-52075
SC 13G/A Open Document Open Filing 11 Jan 2017 005-52075
DEF 14A Open Document Open Filing DEF 14A 28 Dec 2016 09 Feb 2017 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 18 Nov 2016 16 Nov 2016
4 Open Document Open Filing FORM 4 SUBMISSION 18 Nov 2016 16 Nov 2016
4 Open Document Open Filing FORM 4 SUBMISSION 18 Nov 2016 16 Nov 2016
4 Open Document Open Filing FORM 4 SUBMISSION 18 Nov 2016 16 Nov 2016
8-K Open Document Open Filing 8-K 17 Nov 2016 16 Nov 2016 001-13601
10-K Open Document | Data Open Filing 10-K 17 Nov 2016 30 Sep 2016 001-13601
8-K Open Document Open Filing FORM 8-K 08 Nov 2016 07 Nov 2016 001-13601
SC 13G/A Open Document Open Filing 09 Sep 2016 005-52075
10-Q Open Document | Data Open Filing 10-Q 05 Aug 2016 30 Jun 2016 001-13601
8-K Open Document Open Filing FORM 8-K 05 Aug 2016 04 Aug 2016 001-13601
8-K Open Document Open Filing 8-K 25 Jul 2016 22 Jul 2016 001-13601
SC 13G/A Open Document Open Filing 09 Jun 2016 005-52075
SD Open Document Open Filing SD 20 May 2016 001-13601
10-Q Open Document | Data Open Filing 10-Q 06 May 2016 31 Mar 2016 001-13601
8-K Open Document | Data Open Filing 8-K 06 May 2016 05 May 2016 001-13601
8-K Open Document | Data Open Filing 8-K 21 Apr 2016 20 Apr 2016 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 29 Feb 2016 26 Feb 2016
SC 13G/A Open Document Open Filing 16 Feb 2016 005-52075
SC 13G/A Open Document Open Filing 12 Feb 2016 005-52075
SC 13G/A Open Document Open Filing 10 Feb 2016 005-52075
8-K Open Document Open Filing FORM 8-K 05 Feb 2016 04 Feb 2016 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 05 Feb 2016 04 Feb 2016
10-Q Open Document | Data Open Filing 10-Q 04 Feb 2016 31 Dec 2015 001-13601
8-K Open Document Open Filing 8-K 03 Feb 2016 03 Feb 2016 001-13601
SC 13G/A Open Document Open Filing 01 Feb 2016 005-52075
SC 13G/A Open Document Open Filing 26 Jan 2016 005-52075
SC 13G/A Open Document Open Filing 26 Jan 2016 005-52075
8-K Open Document Open Filing FORM 8-K 26 Jan 2016 26 Jan 2016 001-13601
SC 13G/A Open Document Open Filing 25 Jan 2016 005-52075
8-K Open Document Open Filing 8-K 11 Jan 2016 11 Jan 2016 001-13601
DEF 14A Open Document Open Filing DEF 14A 23 Dec 2015 04 Feb 2016 001-13601
SC 13G Open Document Open Filing 30 Nov 2015 005-52075
4 Open Document Open Filing FORM 4 SUBMISSION 24 Nov 2015 24 Nov 2015
4 Open Document Open Filing FORM 4 SUBMISSION 23 Nov 2015 23 Nov 2015
3 Open Document Open Filing FORM 3 SUBMISSION 20 Nov 2015 18 Nov 2015
4 Open Document Open Filing FORM 4 SUBMISSION 20 Nov 2015 18 Nov 2015
4 Open Document Open Filing FORM 4 SUBMISSION 20 Nov 2015 18 Nov 2015
4 Open Document Open Filing FORM 4 SUBMISSION 20 Nov 2015 18 Nov 2015
4 Open Document Open Filing FORM 4 SUBMISSION 20 Nov 2015 18 Nov 2015
8-K Open Document Open Filing 8-K 20 Nov 2015 17 Nov 2015 001-13601
10-K Open Document | Data Open Filing 10-K 19 Nov 2015 30 Sep 2015 001-13601
SC 13G/A Open Document Open Filing 19 Nov 2015 005-52075
8-K Open Document Open Filing FORM 8-K 10 Nov 2015 10 Nov 2015 001-13601
8-K Open Document Open Filing 8-K 02 Oct 2015 01 Oct 2015 001-13601
10-Q Open Document | Data Open Filing 10-Q 07 Aug 2015 30 Jun 2015 001-13601
8-K Open Document Open Filing 8-K 07 Aug 2015 06 Aug 2015 001-13601
8-K Open Document Open Filing FORM 8-K 24 Jul 2015 24 Jul 2015 001-13601
8-K Open Document Open Filing FORM 8-K 26 May 2015 07 May 2015 001-13601
SD Open Document Open Filing FORM SD 20 May 2015 001-13601
10-Q Open Document | Data Open Filing 10-Q 08 May 2015 31 Mar 2015 001-13601
8-K Open Document Open Filing 8-K 07 May 2015 07 May 2015 001-13601
8-K Open Document Open Filing 8-K 28 Apr 2015 28 Apr 2015 001-13601
8-K Open Document Open Filing 8-K 17 Apr 2015 16 Apr 2015 001-13601
8-K Open Document Open Filing FORM 8-K 07 Apr 2015 06 Apr 2015 001-13601
SC 13G/A Open Document Open Filing 10 Mar 2015 005-52075
4 Open Document Open Filing FORM 4 SUBMISSION 24 Feb 2015 23 Feb 2015
8-K Open Document Open Filing FORM 8-K 13 Feb 2015 12 Feb 2015 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 13 Feb 2015 12 Feb 2015
4 Open Document Open Filing FORM 4 SUBMISSION 13 Feb 2015 12 Feb 2015
4 Open Document Open Filing FORM 4 SUBMISSION 13 Feb 2015 12 Feb 2015
4 Open Document Open Filing FORM 4 SUBMISSION 13 Feb 2015 12 Feb 2015
4 Open Document Open Filing FORM 4 SUBMISSION 13 Feb 2015 12 Feb 2015
4 Open Document Open Filing FORM 4 SUBMISSION 13 Feb 2015 12 Feb 2015
SC 13G Open Document Open Filing 13 Feb 2015 005-52075
SC 13G/A Open Document Open Filing 10 Feb 2015 005-52075
SC 13G Open Document Open Filing 09 Feb 2015 005-52075
8-K Open Document Open Filing 8-K 05 Feb 2015 05 Feb 2015 001-13601
10-Q Open Document | Data Open Filing 10-Q 05 Feb 2015 31 Dec 2014 001-13601
SC 13G/A Open Document Open Filing 05 Feb 2015 005-52075
8-K Open Document Open Filing 8-K 22 Jan 2015 22 Jan 2015 001-13601
SC 13G/A Open Document Open Filing 15 Jan 2015 005-52075
SC 13G/A Open Document Open Filing GEOSPACE TECHNOLOGIES CORP. 08 Jan 2015 005-52075
DEF 14A Open Document Open Filing DEF 14A 30 Dec 2014 12 Feb 2015 001-13601
PRE 14A Open Document Open Filing PRELIMINARY PROXY STATEMENT 12 Dec 2014 12 Feb 2015 001-13601
4 Open Document Open Filing FORM 4 SUBMISSION 05 Dec 2014 04 Dec 2014
SC 13G/A Open Document Open Filing 05 Dec 2014 005-52075
8-K Open Document Open Filing 8-K 03 Dec 2014 01 Dec 2014 001-13601
10-K Open Document | Data Open Filing 10-K 21 Nov 2014 30 Sep 2014 001-13601
8-K Open Document Open Filing 8-K 21 Nov 2014 20 Nov 2014 001-13601
8-K Open Document Open Filing 8-K 17 Nov 2014 13 Nov 2014 001-13601
SC 13G/A Open Document Open Filing 10 Nov 2014 005-52075
8-K Open Document Open Filing 8-K 01 Oct 2014 01 Oct 2014 001-13601
10-Q Open Document | Data Open Filing 10-Q 07 Aug 2014 30 Jun 2014 001-13601
8-K Open Document Open Filing 8-K 07 Aug 2014 06 Aug 2014 001-13601
8-K Open Document Open Filing 8-K 23 Jul 2014 23 Jul 2014 001-13601
SD Open Document Open Filing SD 02 Jun 2014 001-13601
S-8 Open Document Open Filing S-8 21 May 2014 333-196149
10-Q Open Document | Data Open Filing 10-Q 08 May 2014 31 Mar 2014 001-13601
8-K Open Document Open Filing 8-K 08 May 2014 07 May 2014 001-13601
UPLOAD Open Document Open Filing 06 May 2014
10-Q/A Open Document Open Filing 10-Q/A 02 May 2014 31 Dec 2013 001-13601
8-K Open Document Open Filing 8-K 30 Apr 2014 30 Apr 2014 001-13601
CORRESP Open Document Open Filing 17 Apr 2014
UPLOAD Open Document Open Filing 09 Apr 2014
CORRESP Open Document Open Filing 28 Mar 2014
8-K Open Document Open Filing 21 Mar 2014 21 Mar 2014 001-13601
UPLOAD Open Document Open Filing 21 Mar 2014
8-K Open Document Open Filing 06 Mar 2014 06 Mar 2014 001-13601
SC 13G/A Open Document Open Filing 13 Feb 2014 005-52075
8-K Open Document Open Filing FORM OF RESTRICTED STOCK AWARD AGREEMENT 12 Feb 2014 06 Feb 2014 001-13601
SC 13G/A Open Document Open Filing 11 Feb 2014 005-52075
4 Open Document Open Filing RESTRICTED STOCK GRANT 10 Feb 2014 06 Feb 2014
4 Open Document Open Filing RESTRICTED STOCK GRANT 10 Feb 2014 06 Feb 2014
4 Open Document Open Filing RESTRICTED STOCK GRANT 10 Feb 2014 06 Feb 2014
4 Open Document Open Filing RESTRICTED STOCK GRANT 10 Feb 2014 06 Feb 2014
4 Open Document Open Filing RESTRICTED STOCK GRANT 10 Feb 2014 06 Feb 2014
8-K Open Document Open Filing 10 Feb 2014 06 Feb 2014 001-13601
4 Open Document Open Filing RESTRICTED STOCK GRANT 10 Feb 2014 06 Feb 2014
8-K Open Document Open Filing 06 Feb 2014 05 Feb 2014 001-13601
10-Q Open Document | Data Open Filing 10-Q 06 Feb 2014 31 Dec 2013 001-13601
SC 13G/A Open Document Open Filing 30 Jan 2014 005-52075
SC 13G/A Open Document Open Filing 10 Jan 2014 005-52075