GEOSPACE TECHNOLOGIES CORP — Director's Dealing 2011

Mar 2, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OYO GEOSPACE CORP (OYOG)
CIK: 0001001115
Period of Report: 2011-02-28

Reporting Person: MCENTIRE THOMAS T (Vice President,CFO & Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-28	Common Stock, par value $.01 per share	M	2000	$7.12	Acquired	13000	Direct
2011-02-28	Common Stock, par value $.01 per share	S	1001	$100.22	Disposed	11999	Direct
2011-02-28	Common Stock, par value $.01 per share	S	500	$101.24	Disposed	11499	Direct
2011-02-28	Common Stock, par value $.01 per share	S	499	$102.36	Disposed	11000	Direct
2011-03-01	Common Stock, par value $.01 per share	M	169	$7.12	Acquired	11169	Direct
2011-03-01	Common Stock, par value $.01 per share	S	169	$100.1	Disposed	11000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-02-28	Options (right to buy)	$7.12	M	2000	Disposed	2013-02-28	Common Stock (2000)	Direct
2011-03-01	Options (right to buy)	$7.12	M	169	Disposed	2013-02-28	Common Stock (169)	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 became exercisable in equal annual installments over a four year period. The option became fully exercisable on February 28, 2007.

F4: This number represents the partial exercise of the options issued to Mr. McEntire in February 2003 to purchase shares of common stock, par value $.01 per share, of OYO Geospace Corporation.

F5: Pursuant to General Instruction 4(c)(iii) of Form 4, the exercise price is reported in Column 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, expiration dates and exercise prices.

F7: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.00 to $100.99. The reporting person undertakes to provide OYO Geospace Corporation, any security holder of OYO Geospace Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (7), (8), (9) ad (10) to this Form 4.

F8: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $101.00 to $101.99.

F9: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.00 to $102.99.

F10: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.00 to $100.99.