DAWSON GEOPHYSICAL CO — Director's Dealing 2008

Feb 7, 2008

SEC Form 5 — Annual Statement of Changes in Beneficial Ownership

Issuer: TGC INDUSTRIES INC (TGE)
CIK: 0000799165
Period of Report: 2007-12-31

Reporting Person: GARDNER HERBERT M (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-06-12	Common Stock	J	220000	—	Disposed	291960	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	220000	Indirect
Common Stock	60040	Indirect

Footnotes

F1: On June 12, 2007, the reporting person contributed 220,000 shares of TGC common stock to a GRAT of which the reporting person's spouse is a trustee and of which the reporting person and his wife are beneficiaries. The reporting person continues to report beneficial ownership of all of the TGC common stock held by the GRAT, but disclaims beneficial ownership except to the extent of his and his wife's pecuniary interest therein.

F2: Not applicable

F3: Reporting person disclaims beneficial ownership of shares owned by spouse.