PENTAIR plc — Director's Dealing 2005

Sep 16, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2005-09-16

Reporting Person: CATHCART RICHARD J (Director, Vice Chairman)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-09-16	Common Stock	S	700	$38.47	Disposed	111797	Direct
2005-09-16	Common Stock	S	300	$38.48	Disposed	111497	Direct
2005-09-16	Common Stock	S	1000	$38.49	Disposed	110497	Direct
2005-09-16	Common Stock	S	600	$38.54	Disposed	109897	Direct
2005-09-16	Common Stock	S	600	$38.56	Disposed	109297	Direct
2005-09-16	Common Stock	S	200	$38.57	Disposed	109097	Direct
2005-09-16	Common Stock	S	200	$38.61	Disposed	108897	Direct
2005-09-16	Common Stock	S	700	$38.71	Disposed	108197	Direct
2005-09-16	Common Stock	S	700	$38.73	Disposed	107497	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1529.118	Indirect

Footnotes

F1: The reported sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 16, 2005.