PENTAIR plc — Director's Dealing 2012

May 10, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2012-05-08

Reporting Person: MONAHAN WILLIAM T (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-08	Common Stock	M	2533.128	—	Acquired	24830.532	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-08	Phantom Stock Units (Deferred Compensation)	$	M	2533.128	Disposed		Common Stock (2533.128)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock - Deferral Plan	1324.719	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: Phantom stock units convert into common stock on a one-for-one basis.

F3: Settlement of phantom stock units in accordance with reporting person's irrevocable election.