Mark A. Vander Ploeg

Insider Reports History

Entity
Individual
Location
866 Hermosa Way, Menlo Park, CA
Signature
Mark A. Vander Ploeg
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by Mark A. Vander Ploeg:

Stock Role Class Num Shares Value Price $ Report Date Ownership
DAWSON GEOPHYSICAL CO Director Dawson Geophysical Company-Common Stock $0.01 par value 0 $1.75 Jan 18, 2022 Direct
DAWSON GEOPHYSICAL CO Director Dawson Geophysical Company-Common Stock $0.01 par value 0 $1.75 Jan 18, 2022 Through the Hermosa Trust dated November 3, 2015.

Insider Reports Filed by Mark A. Vander Ploeg

Symbol Company Period Transactions Value $ Form Type Date Filed Role
DWSN DAWSON GEOPHYSICAL CO Jan 18, 2022 2 -$159K 4 Jan 20, 2022 Director
DWSN DAWSON GEOPHYSICAL CO Sep 30, 2021 1 $0 4 Oct 1, 2021 Director
DWSN DAWSON GEOPHYSICAL CO Jun 30, 2021 1 $0 4 Jul 2, 2021 Director