DAWSON GEOPHYSICAL CO — 425 Filings
25 425 filings on record
This page lists all 425 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 25 425 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 |
|---|---|---|---|---|
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-15-007853 | Feb 9, 2015 | — |
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-15-001996 | Jan 13, 2015 | — |
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-15-000342 | Jan 5, 2015 | — |
| 425 | PROSPECTUSES AND COMMUNICATIONS RE: BUSINESS COMBINATION TRANSACTIONS | 0001104659-14-084407 | Dec 2, 2014 | — |
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-14-081142 | Nov 17, 2014 | — |
| 425 | PROSPECTUSES AND COMMUNICATIONS RE: BUSINESS COMBINATION TRANSACTIONS | 0001104659-14-073830 | Oct 27, 2014 | — |
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-14-071091 | Oct 9, 2014 | — |
| 425 | FORM 8-K | 0000950123-11-091530 | Oct 24, 2011 | — |
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-11-057437 | Oct 24, 2011 | — |
| 425 | PROSPECTUSES AND COMMUNICATIONS RE: BUSINESS COMBINATION TRANSACTIONS | 0001104659-11-056554 | Oct 18, 2011 | — |
| 425 | PROSPECTUSES AND COMMUNICATIONS RE: BUSINESS COMBINATION TRANSACTIONS | 0001104659-11-055440 | Oct 7, 2011 | — |
| 425 | FORM 8-K | 0000950123-11-086794 | Sep 27, 2011 | — |
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-11-053311 | Sep 27, 2011 | — |
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-11-050383 | Sep 6, 2011 | — |
| 425 | FORM 8-K | 0000950123-11-082768 | Sep 6, 2011 | — |
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-11-048497 | Aug 24, 2011 | — |
| 425 | FORM 8-K | 0000950123-11-079699 | Aug 24, 2011 | — |
| 425 | FORM 8-K | 0000950123-11-068577 | Jul 27, 2011 | — |
| 425 | FORM 8-K | 0000950123-11-056102 | Jun 2, 2011 | — |
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-11-032932 | Jun 2, 2011 | — |
| 425 | FORM 8-K | 0000950123-11-045237 | May 5, 2011 | — |
| 425 | FORM 8-K | 0000950123-11-044140 | May 4, 2011 | — |
| 425 | 425 | 0000950123-11-027290 | Mar 21, 2011 | — |
| 425 | FORM 8-K | 0000950123-11-027009 | Mar 21, 2011 | — |
| 425 | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | 0001104659-11-015440 | Mar 21, 2011 | — |