X0306 4 2013-11-01 0000066740 3M CO MMM 0001465913 Delgado Joaquin 3M CENTER ST. PAUL MN 55144-1000 1 Executive Vice President Common Stock 2013-11-01 4 M 0 11418 76.80 A 16579 D Common Stock 2013-11-01 4 S 0 10013 125.66 D 6566 D Common Stock 2013-11-01 4 S 0 400 125.67 D 6166 D Common Stock 2013-11-01 4 S 0 605 125.69 D 5561 D Common Stock 2013-11-01 4 S 0 100 125.70 D 5461 D Common Stock 2013-11-01 4 S 0 200 125.71 D 5261 D Common Stock 2013-11-01 4 S 0 100 125.716 D 5161 D Common Stock 2013-11-01 4 M 0 3420 54.11 A 8581 D Common Stock 2013-11-01 4 S 0 1646 125.68 D 6935 D Common Stock 2013-11-01 4 S 0 222 125.69 D 6713 D Common Stock 2013-11-01 4 S 0 1400 125.70 D 5313 D Common Stock 2013-11-01 4 S 0 100 125.706 D 5213 D Common Stock 2013-11-01 4 S 0 52 125.73 D 5161 D Common Stock 1020 I By 401k/paesop Trust Non-qualified Stock Option (Right to Buy) 76.80 2013-11-01 4 M 0 11418 0 D 2006-05-10 2015-05-08 Common Stock 11418 0 D Non-qualified Stock Option (Right to Buy) 54.11 2013-11-01 4 M 0 3420 0 D 2010-02-09 2019-02-08 Common Stock 3420 10260 D The total has been adjusted to reflect a withholding of 22 additional shares upon vesting of an RSU award on 2/8/2013 and reported on 2/12/2013. Includes shares acquired during the fiscal year pursuant to the 3M Voluntary Investment Plan. /s/ George Ann Biros, attorney-in-fact for Joaquin Delgado 2013-11-04