GEOSPACE TECHNOLOGIES CORP — Director's Dealing 2008

Aug 21, 2008

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OYO GEOSPACE CORP (OYOG)
CIK: 0001001115
Period of Report: 2008-08-21

Reporting Person: MCENTIRE THOMAS T (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2008-08-21	Common Stock, par value $.01 per share	M	1000	$14.56	Acquired	12000	Direct
2008-08-21	Common Stock, par value $.01 per share	S	1000	$50.42	Disposed	11000	Direct
2008-08-21	Common Stock, par value $.01 per share	M	2000	$14.56	Acquired	13000	Direct
2008-08-21	Common Stock, par value $.01 per share	S	2000	$50.92	Disposed	11000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2008-08-21	Options (right to buy)	$14.56	M	1000	Disposed	2008-11-16	Common Stock (1000)	Direct
2008-08-21	Options (right to buy)	$14.56	M	2000	Disposed	2008-11-16	Common Stock (2000)	Direct

Footnotes

F1: These shares were issued upon the exercise of options (described in Table II) and then immediately sold.

F2: The shares that were issued upon the exercise of options were immediately sold, as is presented in Table I.

F3: This option becamse exercisable in equal annual installments over a four year period. The option became fully exercisable on November 16, 2002.

F4: This number represents the partial exercise of the option issued to Mr. McEntire in November 1998 to purchase shares of common stock, par value $.01 per share, of OYO Geospace Corporation.

F5: Pursuant to General Instruction C(iii) of Form 4, the exercise price is reported in Cell 2 of this Table II.

F6: Includes options to purchase shares of common stock, par value $.01 per share, of OYO Geospace Corporation having varying exercise dates, expirations dates and exercise prices.