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CIK 0000799165 · Non-accelerated filer<br>Smaller reporting company

DAWSON GEOPHYSICAL CO

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Ticker
DWSN
Exchange
Nasdaq
Industry
Oil & Gas Field Exploration Services
FY end
Dec 31
Incorporated
TX
Entity type
operating
EIN
742095844
Phone
4326843000
Business address
508 WEST WALL, SUITE 800, MIDLAND, TX, 79701
Former names
TGC INDUSTRIES INC
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$0
in 0 filings

Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2025-05-19 Mays Ray L EVP & Chief Operating Officer Grant or award +900 $1.31 $1K 1,500
2025-05-19 Shaw Ian M. Chief Financial Officer Grant or award +3,645 $1.28 $5K 6,500
2025-05-19 Krylov Sergei Director Grant or award +2,640 $1.27 $3K 25,360
2025-05-16 Mays Ray L EVP & Chief Operating Officer Grant or award +600 $1.28 $768 600
2025-05-16 Shaw Ian M. Chief Financial Officer Grant or award +2,855 $1.28 $4K 2,855
2025-05-16 Krylov Sergei Director Grant or award +3,555 $1.29 $5K 22,720
2024-10-01 Krylov Sergei Director Grant or award +19,165 19,165
2024-10-01 Bradley Bruce Franklin Director Grant or award +19,165 19,165
2024-10-01 Fernandes Jose Carlos Director Grant or award +19,165 19,165
2024-10-01 Conly Albert S. Director Grant or award +19,165 19,165
2024-06-28 Clark William Anthony CEO & President Grant or award +150 150
2023-09-13 Wilks Brothers, LLC Director Conversion +5,811,765 $1.70 $9.9M 24,609,095
2023-09-13 Wilks Brothers, LLC Director Conversion · Convertible Note (convertible into Common Stock) −5,811,765 24,609,095
2023-06-14 Wilks Brothers, LLC 10% owner Purchase +8,895 $2.23 $20K 18,847,330
2023-06-14 Wilks Brothers, LLC 10% owner Purchase +8,895 $2.23 $20K 18,847,330
2023-06-13 Wilks Brothers, LLC 10% owner Purchase +4,438 $2.19 $10K 17,650,200
2023-06-12 Wilks Brothers, LLC 10% owner Purchase +4,166 $2.17 $9K 18,833,997
2023-06-12 Wilks Brothers, LLC 10% owner Purchase +4,438 $2.19 $10K 18,838,435
2023-06-12 Wilks Brothers, LLC 10% owner Purchase +4,166 $2.17 $9K 17,645,762
2023-03-24 Wilks Brothers, LLC 10% owner Other acquisition +1,188,235 18,829,831

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