DAWSON GEOPHYSICAL CO — SC 13G/A Filings
63 SC 13G/A filings on record
This page lists all SC 13G/A filings submitted to the SEC by DAWSON GEOPHYSICAL CO (DWSN), sorted by most recent first. Each row links to the full filing on EdgarLookup. DAWSON GEOPHYSICAL CO has filed 63 SC 13G/A documents with the SEC since 2004. To view all SEC filings by DAWSON GEOPHYSICAL CO, see the full filings list.
All
10-K
10-K/A
10-Q
10-QT
10KSB
10KSB/A
10QSB
10QSB/A
25
3
4
4/A
424B3
424B4
425
5
5/A
8-A12B
8-A12G
8-K
8-K/A
ARS
CERTAMX
CERTNAS
CORRESP
DEF 14A
DEFA14A
DEFM14A
DEFR14A
DEFS14A
EFFECT
NT 10-K
NT 10-Q
POS EX
PRE 14A
PREM14A
PRER14A
PRES14A
S-4
S-4/A
S-8
S-8 POS
SB-2
SB-2/A
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC 14D9
SC 14D9/A
SC TO-T
SC TO-T/A
SCHEDULE 13D/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SC 13G/A | SC 13G/A | 0001104659-23-021619 | Feb 14, 2023 | — |
| SC 13G/A | — | 0001037389-23-000084 | Feb 13, 2023 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000354204-23-001540 | Feb 10, 2023 | — |
| SC 13G/A | — | 0001606587-22-000590 | Feb 17, 2022 | — |
| SC 13G/A | SC 13G/A | 0001193125-22-040281 | Feb 14, 2022 | — |
| SC 13G/A | — | 0001037389-22-000127 | Feb 11, 2022 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000354204-22-001712 | Feb 8, 2022 | — |
| SC 13G/A | DWSN 13G 11/30/21 GRACE & WHITE, INC | 0000903064-21-000011 | Dec 7, 2021 | — |
| SC 13G/A | SC 13G/A | 0001193125-21-040689 | Feb 12, 2021 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000354204-21-000353 | Feb 12, 2021 | — |
| SC 13G/A | — | 0001037389-21-000204 | Feb 11, 2021 | — |
| SC 13G/A | GRACE & WHITE, INC 13G/1 DWSN 12/31/20 | 0000903064-21-000004 | Jan 29, 2021 | — |
| SC 13G/A | — | 0001398344-20-024444 | Dec 10, 2020 | — |
| SC 13G/A | — | 0001398344-20-007752 | Apr 9, 2020 | — |
| SC 13G/A | — | 0001171520-20-000129 | Feb 14, 2020 | — |
| SC 13G/A | — | 0001037389-20-000182 | Feb 13, 2020 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001258897-20-000915 | Feb 12, 2020 | — |
| SC 13G/A | GRACE & WHITE, INC. DWSN 13G/A 12/31/19 | 0000903064-20-000007 | Feb 3, 2020 | — |
| SC 13G/A | — | 0000215457-19-008281 | Jul 10, 2019 | — |
| SC 13G/A | — | 0001037389-19-000183 | Feb 13, 2019 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001258897-19-001356 | Feb 8, 2019 | — |
| SC 13G/A | — | 0001278641-19-000002 | Feb 8, 2019 | — |
| SC 13G/A | — | 0001037389-18-000106 | Feb 14, 2018 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001258897-18-001367 | Feb 9, 2018 | — |
| SC 13G/A | — | 0001278641-18-000003 | Feb 1, 2018 | — |
| SC 13G/A | — | 0000215457-17-003444 | Jul 10, 2017 | — |
| SC 13G/A | — | 0000353480-17-000348 | Jan 23, 2017 | — |
| SC 13G/A | DWSN 13G GWI | 0000903064-16-000019 | Aug 2, 2016 | — |
| SC 13G/A | ROBECO INVESTMENT MANAGEMENT INC. | 0001085146-16-003008 | Feb 11, 2016 | — |
| SC 13G/A | — | 0000903064-16-000013 | Feb 4, 2016 | — |
| SC 13G/A | — | 0001057439-16-000128 | Jan 21, 2016 | — |
| SC 13G/A | — | 0001278641-15-000007 | Dec 4, 2015 | — |
| SC 13G/A | — | 0000215457-15-000342 | Mar 10, 2015 | — |
| SC 13G/A | — | 0001037792-15-000005 | Feb 12, 2015 | — |
| SC 13G/A | SCHEDULE 13G HOLDINGS REPORT AMENDMENT | 0001172661-15-000267 | Feb 6, 2015 | — |
| SC 13G/A | — | 0001398344-15-000575 | Feb 2, 2015 | — |
| SC 13G/A | — | 0000906304-15-000180 | Jan 28, 2015 | — |
| SC 13G/A | — | 0001057439-15-000078 | Jan 22, 2015 | — |
| SC 13G/A | — | 0001037792-14-000016 | Feb 14, 2014 | — |
| SC 13G/A | — | 0000906304-14-000192 | Jan 16, 2014 | — |
| SC 13G/A | SC 13G/A | 0001193125-13-054120 | Feb 13, 2013 | — |
| SC 13G/A | — | 0001037792-13-000010 | Feb 12, 2013 | — |
| SC 13G/A | — | 0000906304-13-000201 | Jan 22, 2013 | — |
| SC 13G/A | SCHEDULE 13G AMENDMENT NO. 1 | 0001193125-12-056730 | Feb 13, 2012 | — |
| SC 13G/A | — | 0001057439-12-000048 | Feb 1, 2012 | — |
| SC 13G/A | — | 0000906304-12-000242 | Jan 23, 2012 | — |
| SC 13G/A | — | 0001057439-11-000042 | Feb 9, 2011 | — |
| SC 13G/A | — | 0000906304-11-000218 | Jan 25, 2011 | — |
| SC 13G/A | — | 0000906304-10-000237 | Jan 26, 2010 | — |
| SC 13G/A | — | 0001085936-09-000026 | Feb 13, 2009 | — |