GEOSPACE TECHNOLOGIES CORP — Director's Dealing 2004

Feb 4, 2004

SEC Form 4/A — Form 4/A

Issuer: OYO GEOSPACE CORP (OYOG)
CIK: 0001001115
Period of Report: 1998-04-16

Reporting Person: HALL ERNEST M JR (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-01-09	Common Stock, par value $.01 per share	A	707	—	Acquired	343857	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-01-12	Options (right to buy)	$17.69	A	3150	Acquired	2014-01-12	Common Stock (3150)	Direct
1998-04-16	Call Options (right to buy)	$14.00	P	160000	Acquired	2008-04-15	Common Stock (160000)	Direct
2002-06-28	Call Options (right to buy)	$10.01	P	140000	Acquired	2015-05-31	Common Stock (140000)	Direct

Footnotes

F1: Pursuant to the OYO Geospace Corporation 1997 Non-Employee Director Stock Option Plan and in transactions exempt from Rule 16(b) pursuant to Rule 16b-3(d), on January 9, 2004, Mr. Hall was granted 707 shares of Common Stock as partial payment of his annual director's retainer fee and on January 12, 2004, options to purchase an additional 3,150 shares of Common Stock.

F2: The options were originally issued on April 16, 1998 pursuant to a privately negotiated agreement between Mr. Hall and Oyo Corporation U.S.A. with an exercise price of $21.00 per share. The agreement was amended on June 22, 1999 to reduce the exercise price to $14.00 per share. The options vested in equal portions over a three year period. OYO Geospace is not a party to this transaction.

F3: The options were granted to Mr. Hall by OYO Corpporation U.S.A. as compensation for services provided to OYO Corporation U.S.A.

F4: The options were granted pursuant to a privately negotiated agreement between Mr. Hall and OYO Corporation U.S.A. on June 28, 2002 at an exercise price of $10.01. These options can not be exercised prior to May 31, 2005 without the written consent of OYO Corporation U.S.A. OYO Geospace is not a party to this transaction.