X0306 4 2017-11-01 0000066740 3M CO MMM 0001465913 Delgado Joaquin 3M CENTER ST. PAUL MN 55144-1000 1 Executive Vice President Common Stock 2017-11-01 4 M 0 26936 78.72 A 60632 D Common Stock 2017-11-01 4 S 0 211 229.64 D 60421 D Common Stock 2017-11-01 4 S 0 304 229.65 D 60117 D Common Stock 2017-11-01 4 S 0 300 229.66 D 59817 D Common Stock 2017-11-01 4 S 0 755 229.70 D 59062 D Common Stock 2017-11-01 4 S 0 100 229.705 D 58962 D Common Stock 2017-11-01 4 S 0 325 229.71 D 58637 D Common Stock 2017-11-01 4 S 0 901 229.72 D 57736 D Common Stock 2017-11-01 4 S 0 500 229.73 D 57236 D Common Stock 2017-11-01 4 S 0 300 229.735 D 56936 D Common Stock 2017-11-01 4 S 0 300 229.745 D 56636 D Common Stock 2017-11-01 4 S 0 741 229.77 D 55895 D Common Stock 2017-11-01 4 S 0 10 229.78 D 55885 D Common Stock 2017-11-01 4 S 0 189 229.79 D 55696 D Common Stock 2017-11-01 4 S 0 300 229.80 D 55396 D Common Stock 2017-11-01 4 S 0 100 229.805 D 55296 D Common Stock 2017-11-01 4 S 0 100 229.81 D 55196 D Common Stock 2017-11-01 4 S 0 200 229.84 D 54996 D Common Stock 2017-11-01 4 S 0 190 229.85 D 54806 D Common Stock 2017-11-01 4 S 0 100 229.8575 D 54706 D Common Stock 2017-11-01 4 S 0 810 229.86 D 53896 D Common Stock 2017-11-01 4 S 0 200 229.87 D 53696 D Common Stock 2017-11-01 4 S 0 100 229.88 D 53596 D Common Stock 2017-11-01 4 S 0 100 229.885 D 53496 D Common Stock 2017-11-01 4 S 0 100 229.89 D 53396 D Common Stock 2017-11-01 4 S 0 200 229.90 D 53196 D Common Stock 2017-11-01 4 S 0 197 229.91 D 52999 D Common Stock 2017-11-01 4 S 0 103 229.92 D 52896 D Common Stock 2017-11-01 4 S 0 100 229.925 D 52796 D Common Stock 1121 I By 401k/paesop Trust Includes shares acquired pursuant to the 3M Voluntary Investment Plan. 1 of 4 /s/ Sheila B. Claugherty, attorney-in-fact for Joaquin Delgado 2017-11-03