Mark A. Vander Ploeg

Insider Reports History

Location
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 18 Jan 2022 Direct
DAWSON GEOPHYSICAL CO Director Dawson Geophysical Company-Common Stock $0.01 par value 0 $1.75 18 Jan 2022 Through the Hermosa Trust dated November 3, 2015.

Insider Reports Filed by Mark A. Vander Ploeg

Symbol Company Period Transactions Value $ Form Type Role Filing Time
DWSN DAWSON GEOPHYSICAL CO 18 Jan 2022 2 -$159K 4 Director 20 Jan 2022, 12:50
DWSN DAWSON GEOPHYSICAL CO 30 Sep 2021 1 $0 4 Director 01 Oct 2021, 12:13
DWSN DAWSON GEOPHYSICAL CO 30 Jun 2021 1 $0 4 Director 02 Jul 2021, 10:12