GEOSPACE TECHNOLOGIES CORP — Director's Dealing 2006

May 17, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OYO GEOSPACE CORP (OYOG)
CIK: 0001001115
Period of Report: 2006-05-15

Reporting Person: KOBAYASHI KATSUHIKO (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-05-15	Common Stock, $.01 par value	X	135000	$10.01	Disposed	1150000	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2006-05-15	Options (obligation to sell)	$10.01	X	135000	Disposed	2012-06-28	Common Stock (135000)	Indirect

Footnotes

F1: Pursuant to a privately negotiated agreement between OYO Corporation U.S.A. and Ernest M. Hall, Jr. dated as of June 28, 2002, OYO Corporation U.S.A. granted Mr. Hall options to purchase 140,000 shares of common stock, par value $.01 per share, of OYO Geospace Corporation held by OYO Corporation U.S.A. Mr. Hall previously exercised options pursuant to this agreement to purchase 5,000 shares of common stock, par value $.01 per share, of OYO Geospace Corporation held by OYO Corporation U.S.A. on April 3, 2006. The reported transaction reflects Mr. Hall's exercise of the remaining options pursuant to this agreement for 135,000 shares of common stock, par value $.01 per share, of OYO Geospace Corporation held by OYO Corporation U.S.A. OYO Geospace Corporation is not a party to this transaction.