PENTAIR plc — Director's Dealing 2012

May 24, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2012-05-22

Reporting Person: MERRIMAN RONALD (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-22	Common Stock	M	12000	$24.78	Acquired	22000	Direct
2012-05-22	Common Stock	S	8400	$42.01	Disposed	13600	Direct
2012-05-22	Common Stock	S	3600	$42.35	Disposed	10000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-22	Nonqualified Stock Option (right to buy)	$24.78	M	12000	Disposed	2019-01-02	Common Stock (12000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock - Deferral Plan	1331.483	Indirect
Common Stock	1771.087	Indirect

Footnotes

F1: The price in Column 4 is a weighted average price. The prices actually received ranged from $41.31 to $42.25. The reporting person has provided to the issuer, and will provide to any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range for all transactions reported in this Form 4 utilizing an average weighted price.

F2: The price in Column 4 is a weighted average price. The prices actually received ranged from $42.33 to $42.38. The reporting person has provided to the issuer, and will provide to any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range for all transactions reported in this Form 4 utilizing an average weighted price.

F3: 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).

F4: Shares of Pentair, Inc. common stock will be delivered to the reporting person in accordance with their irrevocable deferral election.