DAWSON GEOPHYSICAL CO — Director's Dealing 2012

Apr 6, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TGC INDUSTRIES INC (TGE)
CIK: 0000799165
Period of Report: 2012-04-04

Reporting Person: HURTT STEPHANIE P (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-04-04	Common Stock	M	10989	$8.38	Acquired	278357	Direct
2012-04-04	Common Stock	F	9002	$10.23	Disposed	269355	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-04-04	Nonqualified Stock Option	$8.38	M	10989	Disposed	2012-09-18	Common Stock (10989)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	36611	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Nonqualified Stock Option	$3.09	2013-10-22	Common Stock (24320)	24320	Direct
Nonqualified Stock Option	$3.88	2014-12-03	Common Stock (19936)	19936	Direct
Nonqualified Stock Option	$6.32	2016-11-20	Common Stock (16837)	16837	Direct

Footnotes

F1: Reporting person disclaims beneficial ownership of shares owned by the William C. Hurtt Jr. Family GST Exempt Trust except to the extent of reporting persons pecuniary interest. Reporting person is a Co-Trustee of the Trust.

F2: The option vests 50% on 11-21-2011 and 50% on 11-21-2012.

F3: Currently exercisable.

F4: Includes 13,783 shares of common stock held in Reporting Persons IRA account.