| Filed On | Filing |
|---|---|
| 08 Oct 2021 | SC 13D |
| 19 Jan 2021 | SC 13D |
| 22 Dec 1999 | WEDGE ENERGY SERVICES, LLC FOR TGC INDUSTRIES, INC |
| 13 Oct 1998 | SC 13D |
| 13 Oct 1998 | SC 13D |
| 13 Oct 1998 | SC 13D |
| 27 Aug 1998 | SC 13D |
| 21 Aug 1998 | SC 13D |
| 17 Aug 1998 | SC 13D |
| 25 Jun 1998 | SC 13D |
| 23 Jun 1998 | SC 13D |
| 09 Sep 1997 | SC 13D |
| 09 Sep 1997 | SC 13D |
| 15 Aug 1997 | SC 13D |
| 14 Aug 1997 | SC 13D |
| 13 Aug 1997 | SC 13D |
| 14 May 1997 | SC 13D |
| 14 May 1997 | SC 13D |
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