BIO-RAD LABORATORIES, INC. — Director's Dealing 2005

May 17, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIO RAD LABORATORIES INC (BIO)
CIK: 0000012208
Period of Report: 2005-05-13

Reporting Person: STARK JAMES R (Controller)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-05-13	Bio-Rad A Common Stock	S	5210	$52.127	Disposed	5790	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Incentive Stock Option (right to buy)	$10.75	2010-09-19	Bio-Rad A Common Stock (6500)	6500	Direct
Incentive Stock Option (right to buy)	$11.57	2008-02-11	Bio-Rad A Common Stock (3000)	3000	Direct
Incentive Stock Option (right to buy)	$11.94	2010-02-02	Bio-Rad A Common Stock (2500)	2500	Direct
Incentive Stock Option (right to buy)	$28.61	2012-02-06	Bio-Rad A Common Stock (3000)	3000	Direct
Incentive Stock Option (right to buy)	$35.5	2013-02-05	Bio-Rad A Common Stock (2000)	2000	Direct
Incentive Stock Option (right to buy)	$53.75	2014-02-04	Bio-Rad A Common Stock (2300)	2300	Direct
Incentive Stock Option (right to buy)	$57.49	2015-02-09	Bio-Rad A Common Stock (1500)	1500	Direct