X0303 4 2009-10-01 0 0000077360 PENTAIR INC PNR 0001189049 HOGAN RANDALL J 5500 WAYZATA BLVD. SUITE 800 GOLDEN VALLEY MN 55416 1 1 0 0 Chairman, CEO Common Stock 2009-10-01 4 M 0 16000 11.375 A 167594 D Common Stock 2009-10-01 4 F 0 10476 28.61 D 157118 D Common Stock 2009-10-01 4 M 0 63333 11.375 A 220451 D Common Stock 2009-10-01 4 M 0 40784 18.1485 A 261235 D Common Stock 2009-10-01 4 M 0 2329 16.2735 A 263564 D Common Stock 2009-10-01 4 S 0 106446 28.877 D 157118 D Common Stock 267389 I By Trust Common Stock 123531 I By GRAT Common Stock - ESOP 1388.6351 I By ESOP Employee Stock Option (right to buy) 11.375 2009-10-01 4 M 0 16000 0.00 D 2002-01-02 2011-01-02 Common Stock 16000 222000 D Employee Stock Option (right to buy) 11.375 2009-10-01 4 M 0 63333 0.00 D 2002-01-02 2011-01-02 Common Stock 63333 158667 D Employee Stock Option (right to buy) 18.1485 2009-10-01 4 M 0 40784 0.00 D 2003-01-02 2012-01-02 Common Stock 40784 250216 D Employee Stock Option (right to buy) 16.2735 2009-10-01 4 M 0 2329 0.00 D 2002-01-14 2011-01-02 Common Stock 2329 4659 D The reported sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 31, 2009. Upon request by the Commission, the company or a shareholder, the reporting person will provide full details of the information reported regarding the number of shares sold at each separate price. The reported price for this transaction is the weighted average price, and the range of prices is $28.65 to $29.33. Since the reporting person's last filed form, 123,531 shares previously reported as indirectly beneficially owned by Trust have been contributed to a grantor retained annuity trust. 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). s/ Louis L. Ainsworth, Attorney-in-Fact 2009-10-02