Dawson Geophysical Co.

DWSN·NASDAQ·$4.12Share Price as of 11/2·$128MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/14/26 10-QQ1 ended 03/31/2605/15/26 10-K/AFY 202504/30/26 10-KFY 202503/31/26 10-QQ3 ended 09/30/2511/13/25

Disclosures

8-KCurrent report08/13/26 8-KCurrent report05/14/26 8-KCurrent report03/31/26 8-KCurrent report11/12/25 8-KCurrent report11/06/25

Prospectuses and Registrations

S-8Registration of securities for employees06/28/21 S-8Registration of securities for employees07/18/16 S-8Registration of securities for employees06/02/15 S-8 POSPost-effective amendment (S-8)02/12/15 S-8Registration of securities for employees02/06/15

Proxies

DEF 14ADefinitive proxy04/30/25 DEFA14AAdditional proxy materials05/16/24 DEF 14ADefinitive proxy04/29/24 DEF 14ADefinitive proxy11/08/23 PRE 14APreliminary proxy10/27/23

Ownership

Form 4Insider transaction10/29/26 Form 4Insider transaction10/29/26 Form 4Insider transaction07/01/26 Form 4Insider transaction01/05/26 SC 13D/ABeneficial ownership (amended)01/05/26

Other

NT 10-KLate filing notification (10-K)04/01/25 UPLOADLetter from the SEC08/25/23 CORRESPCorrespondence with the SEC08/07/23 UPLOADLetter from the SEC07/26/23 SC 14D9/ASolicitation/Recommendation (amended)01/18/22