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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
891024	Patterson Companies Inc.	PDCO	Wholesale-Medical, Dental & Hospital Equipment & Supplies (5047)	410886515

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
901714	E Ronald Ezerski	26531 Rookery Lake Drive Bonita Springs FL 34134		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2010-05-04	59,184	$31.38	974,579	No	4	S	Indirect	LLC

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	LLC

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	150,809	Indirect	In Trust
Common Stock	13,096	Direct

Reported Derivative Holdings

Sec. Name	Sec. Type	Price	Date	Expiration Date	Amount	Remaning Holdings	Nature of Ownership
Common Stock	Director Stock Options	$0.00			54,926	54,926	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
	54,926	54,926	Direct

Footnotes

Held by Irrevocable Trust of which Reporting Person's spouse is trustee.
The transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 19, 2010.
Held by limited liability company of which the Reporting Person is the managing member.
Options exercisable as follows: 12,000 on 9/10/03, 12,000 on 9/09/04, 12,000 on 9/13/05, 12,000 on 9/12/06, 5,000 on 9/18/07 and 1,926 on 4/30/08.
All grants expire 10 years after grant date.
Options granted as follows: 12,000 on 9/10/02 at $23.9425, 12,000 on 9/9/03 at $27.8575, 12,000 on 9/13/04 at $37.18, 12,000 on 9/12/05 at $40.935, 5,000 on 9/18/06 at $32.41 and 1,926 on 4/30/07 at $36.06.