ABBOTT LABORATORIES — Director's Dealing 2005

May 26, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ABBOTT LABORATORIES (ABT)
CIK: 0000001800
Period of Report: 2005-05-25

Reporting Person: DEMPSEY WILLIAM G (Senior Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-05-25	Common shares without par value	M	26251	$38.4567	Acquired	175857	Direct
2005-05-25	Common shares without par value	F	22916	$48.67	Disposed	152941	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-05-25	Option (right to buy)	$38.4567	M	26251	Disposed	2007-02-13	common shares (26251)	Direct
2005-05-25	Option (right to buy)	$48.67	A	22916	Acquired	2007-02-13	common shares (22916)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common shares without par value	10182	Indirect

Footnotes

F1: Balance in the Abbott Laboratories Stock Retirement Trust as of May 25, 2005.

F2: Employee stock option granted pursuant to the Abbott Laboratories 1996 Incentive Stock Program, including a replacement option feature, in a transaction exempt from Section 16 under Rule 16b-3.