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Insider Trading & Ownership of Mark A. Vander Ploeg

Location
Menlo Park, CA
Signature
Mark A. Vander Ploeg
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Ownership of Mark A. Vander Ploeg

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
DWSN DAWSON GEOPHYSICAL CO Director 18 Jan 2022

Insider Transactions Reported by Mark A. Vander Ploeg:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.