Vander Ploeg Mark A 4
4 · DAWSON GEOPHYSICAL CO · Filed Jan 3, 2019
Insider Transaction Report
Form 4
Vander Ploeg Mark A
Director
Transactions
- Award
Dawson Geophysical Company-Common Stock $0.01 par value
2018-12-31+3,848→ 40,640 total
4 · DAWSON GEOPHYSICAL CO · Filed Jan 3, 2019
Dawson Geophysical Company-Common Stock $0.01 par value