PENTAIR plc — Director's Dealing 2007

Aug 27, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2007-08-24

Reporting Person: AINSWORTH LOUIS L (Sr. Vice President, Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-08-23	Common Stock	G	75	—	Disposed	125725.464	Direct
2007-08-24	Common Stock	M	46000	$17.47	Acquired	171725.464	Direct
2007-08-24	Common Stock	F	30351	$35.77	Disposed	141374.464	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-08-24	Employee Stock Option (right to buy)	$17.47	M	46000	Disposed	2013-01-02	Common Stock (46000)	Direct
2007-08-24	Employee Stock Option (right to buy)	$35.77	A	22465	Acquired	2013-01-02	Common Stock (22465)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock - ESOP	1696.8039	Indirect
Common Stock	3719.615	Indirect

Footnotes

F2: End-of-period holdings include ESOP allocation and shares acquired under a dividend reinvestment plan in exempt transactions not required to be reported pursuant to Section 16(a).

F4: Reload stock option becomes exercisable upon grant and expires on the same date as the original option grant.

F1: End-of-period holdings include shares acquired under a dividend reinvestment plan in exempt transaction not required to be reported pursuant to Section 16(a).

F3: Employee reload stock option granted pursuant to the Pentair, Inc. Omnibus Stock Incentive Plan.