0001104659-21-121779.txt : 20211001
0001104659-21-121779.hdr.sgml : 20211001
20211001121317
ACCESSION NUMBER: 0001104659-21-121779
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20210930
FILED AS OF DATE: 20211001
DATE AS OF CHANGE: 20211001
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Vander Ploeg Mark A
CENTRAL INDEX KEY: 0001604461
FILING VALUES:
FORM TYPE: 4
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-32472
FILM NUMBER: 211297867
MAIL ADDRESS:
STREET 1: 1360 ELDER AVENUE
CITY: MENLO PARK
STATE: CA
ZIP: 94025
ISSUER:
COMPANY DATA:
COMPANY CONFORMED NAME: DAWSON GEOPHYSICAL CO
CENTRAL INDEX KEY: 0000799165
STANDARD INDUSTRIAL CLASSIFICATION: OIL AND GAS FIELD EXPLORATION SERVICES [1382]
IRS NUMBER: 742095844
STATE OF INCORPORATION: TX
FISCAL YEAR END: 1231
BUSINESS ADDRESS:
STREET 1: 508 WEST WALL
STREET 2: SUITE 800
CITY: MIDLAND
STATE: TX
ZIP: 79701
BUSINESS PHONE: 4326843000
MAIL ADDRESS:
STREET 1: 508 WEST WALL
STREET 2: SUITE 800
CITY: MIDLAND
STATE: TX
ZIP: 79701
FORMER COMPANY:
FORMER CONFORMED NAME: TGC INDUSTRIES INC
DATE OF NAME CHANGE: 19920703
4
1
tm2129025-4_4seq1.xml
OWNERSHIP DOCUMENT
X0306
4
2021-09-30
0
0000799165
DAWSON GEOPHYSICAL CO
DWSN
0001604461
Vander Ploeg Mark A
1360 ELDER AVENUE
MENLO PARK
CA
94025
1
0
0
0
Dawson Geophysical Company-Common Stock $0.01 par value
2021-09-30
4
A
0
2988
0
A
31099
D
Dawson Geophysical Company-Common Stock $0.01 par value
36792
I
Through the Hermosa Trust dated November 3, 2015.
Held through the Hermosa Trust, of which the insider and his wife are trustees and beneficiaries.
Mark A. Vander Ploeg
2021-10-01