DAWSON GEOPHYSICAL CO — Director's Dealing 2012

Jun 15, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TGC INDUSTRIES INC (TGE)
CIK: 0000799165
Period of Report: 2012-06-14

Reporting Person: BARRETT WILLIAM J (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-06-14	Common Stock	S	4000	$10.10	Disposed	1818969	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	169281	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Nonqualified Stock Option - reload	$9.50	2012-09-19	Common Stock (9689)	9689	Direct
Nonqualified Stock Option	$2.95	2013-10-22	Common Stock (25536)	25536	Direct
Nonqualified Stock Option	$3.69	2014-12-03	Common Stock (20933)	20933	Direct
Nonqualified Stock Option	$6.02	2016-11-20	Common Stock (17679)	17679	Direct

Footnotes

F1: Reporting Person disclaims beneficial ownership of common stock owned by spouse.

F2: Includes 1,764,528 shares of common stock held in Reporting Persons IRA accounts.

F3: Currently exercisable.

F4: The option vests 50% on 11-21-2011 and 50% on 11-21-2012.

F5: The reload option vests six months from the date of grant.