DAWSON GEOPHYSICAL CO — Director's Dealing 2013

Dec 20, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TGC INDUSTRIES INC (TGE)
CIK: 0000799165
Period of Report: 2013-12-18

Reporting Person: GARDNER HERBERT M (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-12-18	Nonqualified Stock Option	$7.18	A	19797	Acquired	2018-12-18	Common Stock (19797)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	702851	Direct
Common Stock	80453	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Nonqualified Stock Option	$3.52	2014-12-03	Common Stock (21979)	21979	Direct
Nonqualified Stock Option	$5.73	2016-11-20	Common Stock (18562)	18562	Direct
Nonqualified Stock Option	$5.60	2017-08-06	Common Stock (19687)	19687	Direct

Footnotes

F1: Includes 296,331 shares held in Reporting Persons IRA accounts.

F2: Reporting Person disclaims beneficial ownership of shares owned by the estate of spouse.

F3: Currently exercisable.

F4: Option vests fifty percent on the date of grant (12-18-2013) and the remaining fifty percent vests one year after the date of grant (12-18-2014).

F5: Not applicable.