DAWSON GEOPHYSICAL CO — Director's Dealing 2008

Nov 4, 2008

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TGC INDUSTRIES INC (TGE)
CIK: 0000799165
Period of Report: 2008-11-04

Reporting Person: WHITENER WAYNE A (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2008-11-04	Common Stock	P	1000	$2.15	Acquired	87555	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option	$4.60	2010-06-06	Common Stock (57881)	57881	Direct
Stock Option	$3.37	2013-10-23	Common Stock (50000)	50000	Direct

Footnotes

F1: Currently exercisable.

F2: Stock options are exercisable as follows: one-third exercisable afer 12 months from date of grant; two-thirds exercisable after 24 months from date of grant; and all exerciasable after 36 months from date of grant.