X0306 4 2019-02-05 0000066740 3M CO MMM 0001577544 Roman Michael F 3M CENTER ST. PAUL MN 55144-1000 1 1 Chief Exec Officer & Director Common Stock 2019-02-05 4 A 0 7624.196 0 A 33313.5722 D Common Stock 2019-02-05 4 F 0 199.79 0 D 33113.7822 D Incentive Stock Option (Right to Buy) 201.12 2019-02-05 4 A 0 146240 0 A 2020-02-05 2029-02-04 Common Stock 146240 146240 D Represents shares of 3M common stock that will be delivered pursuant to the terms of a performance share award made to the reporting person on March 1, 2016. The performance-based vesting requirements applicable to such award were satisfied on the date reported in Column 2 above, which represents the date on which the level of performance attained was certified. The reporting person previously elected to defer receipt of the shares and will not have voting or investment powers with respect to these shares until they are issued. The number of shares withheld for FICA taxes was estimated and will be revised by amendment, if necessary. Includes shares acquired under 3M's General Employee Stock Purchase Plan. /s/ Sheila B. Claugherty, attorney-in-fact for Michael F. Roman 2019-02-07