DAWSON GEOPHYSICAL CO — Director's Dealing 2006

Feb 14, 2006

SEC Form 5 — Annual Statement of Changes in Beneficial Ownership

Issuer: TGC INDUSTRIES INC (TGE)
CIK: 0000799165
Period of Report: 2005-12-31

Reporting Person: Winn Daniel G (Vice President)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-06-07	Stock Option	$5.33	A	5000	Acquired	2010-06-06	Common Stock (5000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	10100	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option	$.80	2009-02-19	Common Stock (8000)	8000	Direct

Footnotes

F1: Stock options are exercisable as follows: one-third exercisable after twelve months from date of grant; two-thirds exercisable after twenty-four months from date of grant; and all exercisable after thirty-six months from date of grant.

F2: See exercise price in column 2.