X0303 4 2011-05-04 0000066740 3M CO MMM 0001465913 Delgado Joaquin 3M CENTER ST. PAUL MN 55144-1000 1 Executive Vice President Common Stock 2011-05-04 4 S 0 300 96.17 D 11174 D Common Stock 2011-05-04 4 S 0 800 96.18 D 10374 D Common Stock 2011-05-04 4 S 0 100 96.185 D 10274 D Common Stock 2011-05-04 4 S 0 810 96.19 D 9464 D Common Stock 2011-05-04 4 S 0 340 96.20 D 9124 D Common Stock 2011-05-04 4 S 0 200 96.205 D 8924 D Common Stock 2011-05-04 4 S 0 200 96.21 D 8724 D Common Stock 2011-05-04 4 S 0 100 96.215 D 8624 D Common Stock 2011-05-04 4 S 0 300 96.22 D 8324 D Common Stock 2011-05-04 4 S 0 100 96.2207 D 8224 D Common Stock 2011-05-04 4 S 0 440 96.23 D 7784 D Common Stock 2011-05-04 4 S 0 473 96.24 D 7311 D Common Stock 2011-05-04 4 S 0 400 96.25 D 6911 D Common Stock 2011-05-04 4 S 0 427 96.26 D 6484 D Common Stock 2011-05-04 4 S 0 100 96.265 D 6384 D Common Stock 2011-05-04 4 S 0 200 96.27 D 6184 D Common Stock 2011-05-04 4 S 0 100 96.29 D 6084 D Common Stock 958 I By 401k/paesop Trust Non-qualified Stock Option (Right to Buy) 61.85 2011-05-04 4 M 0 16590 0 D 2004-05-13 2013-05-13 Common Stock 16590 0 D Includes shares acquired during the fiscal year pursuant to the 3M Voluntary Investment Plan. /s/ George Ann Biros, attorney-in-fact for Joaquin Delgado 2011-05-05