Geospace Technologies Corporation

GEOS·NASDAQ·$8.61Share Price as of 11/2·$111MMarket Cap as of 11/2

Financials

10-QQ3 ended 06/30/2608/07/26 10-QQ2 ended 03/31/2605/08/26 10-QQ1 ended 12/31/2502/12/26 10-KFY 202511/21/25 10-QQ3 ended 06/30/2508/08/25

Disclosures

8-KCurrent report08/07/26 8-KCurrent report05/07/26 8-KCurrent report04/06/26 8-KCurrent report02/05/26 8-KCurrent report02/04/26

Prospectuses and Registrations

S-8Registration of securities for employees08/27/21 S-8Registration of securities for employees05/21/14 424B1Prospectus02/16/12 FWPFree writing prospectus02/14/12 424B4Prospectus02/13/12

Proxies

DEF 14ADefinitive proxy12/23/25 DEFA14AAdditional proxy materials12/23/25 DEF 14ADefinitive proxy12/27/24 DEFA14AAdditional proxy materials12/27/24 DEF 14ADefinitive proxy01/03/24

Ownership

SC 13GBeneficial ownership10/07/26 SC 13G/ABeneficial ownership (amended)08/14/26 SC 13G/ABeneficial ownership (amended)07/31/26 SC 13G/ABeneficial ownership (amended)05/15/26 SC 13GBeneficial ownership04/29/26

Other

SDConflict Minerals disclosure05/19/26 NT 10-QLate filing notification (10-Q)02/09/26 SDConflict Minerals disclosure05/21/25 SDConflict Minerals disclosure05/21/24 SDConflict Minerals disclosure05/17/23