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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0001193125-21-040689
Filing Date
2021-02-12
Accepted
2021-02-12 11:36:56
Documents
3
Group Members
COLUMBIA MANAGEMENT INVESTMENT ADVISERS, LLC

Document Format Files

Seq Description Document Type Size
1 SC 13G/A d103779dsc13ga.htm SC 13G/A 50296
2 EX-99.I d103779dex99i.htm EX-99.I 1068
3 EX-99.II d103779dex99ii.htm EX-99.II 3480
  Complete submission text file 0001193125-21-040689.txt   56880
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/A | Act: 34 | File No.: 005-37717 | Film No.: 21624408
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/A
SIC: 6282 Investment Advice