DAWSON GEOPHYSICAL CO — Director's Dealing 2014

Oct 7, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TGC INDUSTRIES INC (TGE)
CIK: 0000799165
Period of Report: 2014-10-03

Reporting Person: GARDNER HERBERT M (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-10-03	Common Stock	M	21979	$3.5159	Acquired	724830	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-10-03	Nonqualified Stock Option	$3.5159	M	21979	Disposed	2014-12-03	Common Stock (21979)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	80453	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
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
Nonqualified Stock Option	$7.18	2018-12-18	Common Stock (19797)	19797	Direct
Nonqualified Stock Option	$3.93	2019-07-30	Common Stock (37500)	37500	Direct

Footnotes

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

F2: Reporting Person disclaims beneficial ownership of shares owned by the Generation Skipping Marital Trust U/W/O Mary K. Gardner, of which the Reporting Person is a Co-Trustee.

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: Option vests fifty percent on the date of grant (7-31-2014) and the remaining fifty percent vests one year after the date of grant (7-31-2015).