DAWSON GEOPHYSICAL CO — Director's Dealing 2011

Dec 7, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TGC INDUSTRIES INC (TGE)
CIK: 0000799165
Period of Report: 2011-12-06

Reporting Person: Brata James Kevin (VP; Secy; Treas; CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-12-06	Common Stock	S	7500	$8.55	Disposed	6969	Direct
2011-12-07	Common Stock	S	3525	$8.55	Disposed	3444	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Incentive Stock Option	$3.06	2013-10-23	Common Stock (33075)	33075	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.51 to $8.60, inclusive. The reporting person undertakes to provide TGC Industries, Inc., any security holder of TGC, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F2: Currently exercisable.