PENTAIR plc — Director's Dealing 2009

May 28, 2009

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2009-05-27

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-05-27	Common Stock	G	200	$0.00	Disposed	142765.858	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3868.719	Indirect
Common Stock - ESOP	2028.0266	Indirect

Footnotes

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).

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).