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Form SC 13G - Statement of acquisition of beneficial ownership by individuals:
SEC Accession No. 0001193125-20-037117
Filing Date
2020-02-14
Accepted
2020-02-14 10:40:03
Documents
3
Group Members
COLUMBIA MANAGEMENT INVESTMENT ADVISERS, LLC

Document Format Files

Seq Description Document Type Size
1 SC 13G d132923dsc13g.htm SC 13G 47737
2 EX-99.I d132923dex99i.htm EX-99.I 1070
3 EX-99.II d132923dex99ii.htm EX-99.II 3583
  Complete submission text file 0001193125-20-037117.txt   54420
Mailing Address 508 WEST WALL SUITE 800 MIDLAND TX 79701
Business Address 508 WEST WALL SUITE 800 MIDLAND TX 79701 4326843000
DAWSON GEOPHYSICAL CO (Subject) CIK: 0000799165 (see all company filings)

IRS No.: 742095844 | State of Incorp.: TX | Fiscal Year End: 1231
Type: SC 13G | Act: 34 | File No.: 005-37717 | Film No.: 20615352
SIC: 1382 Oil & Gas Field Exploration Services

Mailing Address 1099 AMERIPRISE FINANCIAL CENTER MINNEAPOLIS MN 55474
Business Address 1099 AMERIPRISE FINANCIAL CENTER MINNEAPOLIS MN 55474 612-671-8001
AMERIPRISE FINANCIAL INC (Filed by) CIK: 0000820027 (see all company filings)

IRS No.: 133180631 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G
SIC: 6282 Investment Advice