X0303 5 2009-12-31 0 0 0000066740 3M CO MMM 0001215821 BUCKLEY GEORGE W 3M CENTER ST. PAUL MN 55144-1000 1 1 CHAIRMAN OF THE BOARD & CEO Common Stock 2009-12-31 5 J 0 219889 D 42832 D Common Stock 592 I By 401k/paesop Trust Restricted Stock Units 2009-12-31 5 J 0 132808 A Common Stock 132808 132808 D Restricted Stock Units 2009-12-31 5 J 0 10755 A Common Stock 10755 10755 D Restricted Stock Units 2009-12-31 5 J 0 72261 A Common Stock 72261 72261 D Restricted Stock Units 2009-12-31 5 J 0 4065 A Common Stock 4065 4065 D Due to reporting automation changes instituted by Issuer's stock plan vendor, the reporting person's restricted stock units will be reported on Table II going forward. This transaction indicates the number of restricted stock units that will be transferred to Table II. Each restricted stock unit represents a contingent right to receive one share of 3M common stock. Includes shares acquired during the fiscal year pursuant to the 3M Voluntary Investment Plan. The terms of the initial award (157,808 restricted stock units) provided for vesting as follows: 25,000 restricted stock units on 12/31/2006 and 132,808 on 12/6/2010. The terms of the initial award (50,000 restricted stock units) provided for vesting in five equal annual installments on the anniversary of the grant date, 12/6/2005. The restricted stock units will vest 100% three years from the grant date (2/9/2009). The terms of the initial award (5,420 restricted stock units) provided for vesting in four equal installments commencing 12/31/2009. George Ann Biros, attorney-in-fact for George W. Buckley 2010-01-15