PENTAIR plc — Director's Dealing 2005

Mar 4, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2005-03-02

Reporting Person: SCHROCK MICHAEL V (President, COO Enclosures)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-03-02	Common Stock	M	16668	$16.5625	Acquired	201562.191	Direct
2005-03-02	Common Stock	M	68000	$18.1485	Acquired	269562.191	Direct
2005-03-02	Common Stock	M	42666	$17.47	Acquired	312228.191	Direct
2005-03-02	Common Stock	M	14398	$22.88	Acquired	326626.191	Direct
2005-03-02	Common Stock	F	94414	$41.43	Disposed	232212.191	Direct
2005-03-03	Common Stock	S	100	$41.5	Disposed	232112.191	Direct
2005-03-03	Common Stock	S	11000	$41.52	Disposed	221112.191	Direct
2005-03-03	Common Stock	S	6200	$41.54	Disposed	214912.191	Direct
2005-03-03	Common Stock	S	399	$41.56	Disposed	214513.191	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-03-02	Employee Stock Option (right to buy)	$16.5625	M	16668	Disposed	2011-10-22	Common Stock (16668)	Direct
2005-03-02	Employee Stock Option (right to buy)	$17.47	M	42666	Disposed	2013-01-02	Common Stock (42666)	Direct
2005-03-02	Employee Stock Option (right to buy)	$18.1485	M	68000	Disposed	2012-01-02	Common Stock (68000)	Direct
2005-03-02	Employee Stock Option (right to buy)	$22.88	M	14398	Disposed	2014-01-02	Common Stock (14398)	Direct
2005-03-02	Employee Stock Option (right to buy)	$41.43	A	6662	Acquired	2011-10-22	Common Stock (6662)	Direct
2005-03-02	Employee Stock Option (right to buy)	$41.43	A	29786	Acquired	2012-01-02	Common Stock (29786)	Direct
2005-03-02	Employee Stock Option (right to buy)	$41.43	A	17991	Acquired	2013-01-02	Common Stock (17991)	Direct
2005-03-02	Employee Stock Option (right to buy)	$41.43	A	7951	Acquired	2014-01-02	Common Stock (7951)	Direct

Footnotes

F1: On May 17, 2004, Pentair declared a 2-for-1 stock split in the form of a 100 percent stock dividend payable on June 8, 2004, to shareholders of record as of June 1, 2004. This previously reported stock option and exercise price have been adjusted to reflect the stock split.

F2: Employee reload stock option granted pursuant to the Pentair, Inc. Omnibus Stock Incentive Plan.

F3: Reload stock option becomes exercisable upon grant and expires on the same date as the original option grant.