MMM

SEC source: 0001127602-18-004639 · form4.xml · derivative · entry 3

McGrath Marlene Mary · CIK 0001546559 · Senior VP - Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,200

Underlying: Common Stock · 22,200 shares

Expires 2028-02-04

F3 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004639 · form4.xml · nonDerivative · entry 2

McGrath Marlene Mary · CIK 0001546559 · Senior VP - Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,086.5406

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004639 · form4.xml · nonDerivative · entry 1

McGrath Marlene Mary · CIK 0001546559 · Senior VP - Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,922.5406

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

SEC source: 0001127602-18-004637 · form4.xml · derivative · entry 3

Little Frank R Jr. · CIK 0001592355 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,035

Underlying: Common Stock · 42,035 shares

Expires 2028-02-04

F3 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004637 · form4.xml · nonDerivative · entry 2

Little Frank R Jr. · CIK 0001592355 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,671.9459

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004637 · form4.xml · nonDerivative · entry 1

Little Frank R Jr. · CIK 0001592355 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,323.9459

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

SEC source: 0001127602-18-004632 · form4.xml · derivative · entry 5

Ashish Khandpur K · CIK 0001614139 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,273

Underlying: Common Stock · 27,273 shares

Expires 2028-02-04

F4 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004632 · form4.xml · nonDerivative · entry 2

Ashish Khandpur K · CIK 0001614139 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,947.8601

F1 · shares: 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 2, 2015. 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.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004632 · form4.xml · nonDerivative · entry 1

Ashish Khandpur K · CIK 0001614139 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,052.8601

F1 · shares: 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 2, 2015. 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.

SEC source: 0001127602-18-004628 · form4.xml · derivative · entry 3

Keel Paul A · CIK 0001626337 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,828

Underlying: Common Stock · 16,828 shares

Expires 2028-02-04

F3 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004628 · form4.xml · nonDerivative · entry 2

Keel Paul A · CIK 0001626337 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,011.8429

F1 · shares: 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 2, 2015. 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.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004628 · form4.xml · nonDerivative · entry 1

Keel Paul A · CIK 0001626337 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,110.8429

F1 · shares: 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 2, 2015. 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.

SEC source: 0001127602-18-004622 · form4.xml · derivative · entry 3

Fong Ivan K · CIK 0001342238 · Sr. VP, Legal & Gen. Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,291

Underlying: Common Stock · 17,291 shares

Expires 2028-02-04

F3 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004622 · form4.xml · nonDerivative · entry 2

Fong Ivan K · CIK 0001342238 · Sr. VP, Legal & Gen. Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,931.0252

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004622 · form4.xml · nonDerivative · entry 1

Fong Ivan K · CIK 0001342238 · Sr. VP, Legal & Gen. Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,496.0252

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

SEC source: 0001127602-18-004616 · form4.xml · derivative · entry 4

Delgado Joaquin · CIK 0001465913 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,273

Underlying: Common Stock · 27,273 shares

Expires 2028-02-04

F4 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004616 · form4.xml · nonDerivative · entry 2

Delgado Joaquin · CIK 0001465913 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,631.8005

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004616 · form4.xml · nonDerivative · entry 1

Delgado Joaquin · CIK 0001465913 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,944.8005

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

SEC source: 0001127602-18-004613 · form4.xml · derivative · entry 4

Bushman Julie L · CIK 0001518599 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,029

Underlying: Common Stock · 35,029 shares

Expires 2028-02-04

F4 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004613 · form4.xml · nonDerivative · entry 2

Bushman Julie L · CIK 0001518599 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,917.9088

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004613 · form4.xml · nonDerivative · entry 1

Bushman Julie L · CIK 0001518599 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,369.9088

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

SEC source: 0001127602-18-004610 · form4.xml · derivative · entry 3

Bauman James L · CIK 0001628097 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,103

Underlying: Common Stock · 34,103 shares

Expires 2028-02-04

F3 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004610 · form4.xml · nonDerivative · entry 2

Bauman James L · CIK 0001628097 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,382.131

F1 · shares: 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 2, 2015. 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.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004610 · form4.xml · nonDerivative · entry 1

Bauman James L · CIK 0001628097 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,497.131

F1 · shares: 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 2, 2015. 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.

SEC source: 0001127602-18-004596 · form4.xml · derivative · entry 3

Ludgate Kristen M · CIK 0001727434 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,518

Underlying: Common Stock · 5,518 shares

Expires 2028-02-04

F2 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004596 · form4.xml · nonDerivative · entry 2

Ludgate Kristen M · CIK 0001727434 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 985.5828

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on April 1, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

SEC source: 0001127602-18-004596 · form4.xml · nonDerivative · entry 1

Ludgate Kristen M · CIK 0001727434 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,235.5828

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on April 1, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

SEC source: 0001127602-18-004583 · form4.xml · derivative · entry 3

Hammes Eric D. · CIK 0001610493 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,438

Underlying: Common Stock · 15,438 shares

Expires 2028-02-04

F3 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004583 · form4.xml · nonDerivative · entry 2

Hammes Eric D. · CIK 0001610493 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,268.1302

F1 · shares: 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 2, 2015 and July 3, 2017. 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.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004583 · form4.xml · nonDerivative · entry 1

Hammes Eric D. · CIK 0001610493 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,330.1302

F1 · shares: 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 2, 2015 and July 3, 2017. 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.

SEC source: 0001127602-18-004588 · form4.xml · derivative · entry 3

Lindekugel Jon T · CIK 0001608409 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,828

Underlying: Common Stock · 16,828 shares

Expires 2028-02-04

F3 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004588 · form4.xml · nonDerivative · entry 2

Lindekugel Jon T · CIK 0001608409 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,540.6095

F1 · shares: 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 2, 2015 and May 1, 2017. 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.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004588 · form4.xml · nonDerivative · entry 1

Lindekugel Jon T · CIK 0001608409 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,622.2235

F1 · shares: 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 2, 2015 and May 1, 2017. 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.

SEC source: 0001127602-18-004565 · form4.xml · derivative · entry 3

Vrohidis Ippocratis · CIK 0001710917 · Vice President & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,518

Underlying: Common Stock · 5,518 shares

Expires 2028-02-04

F3 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004565 · form4.xml · nonDerivative · entry 2

Vrohidis Ippocratis · CIK 0001710917 · Vice President & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 597.8179

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004565 · form4.xml · nonDerivative · entry 1

Vrohidis Ippocratis · CIK 0001710917 · Vice President & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,026.8179

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on March 2, 2015. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

SEC source: 0001127602-18-004572 · form4.xml · derivative · entry 3

Banovetz John Patrick · CIK 0001711228 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,438

Underlying: Common Stock · 15,438 shares

Expires 2028-02-04

F3 · security: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/6/2018).

SEC source: 0001127602-18-004572 · form4.xml · nonDerivative · entry 2

Banovetz John Patrick · CIK 0001711228 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,581.3359

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on May 1, 2015 and July 3, 2017. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

F2 · balance_after: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

SEC source: 0001127602-18-004572 · form4.xml · nonDerivative · entry 1

Banovetz John Patrick · CIK 0001711228 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,138.3359

F1 · shares: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on May 1, 2015 and July 3, 2017. 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 number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

SEC source: 0001127602-18-007287 · form4a.xml · derivative · entry 3

Bauman James L · CIK 0001628097 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,103

Underlying: Common Stock · 34,103 shares

Expires 2028-02-04

SEC source: 0001127602-18-007287 · form4a.xml · nonDerivative · entry 2

Bauman James L · CIK 0001628097 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,353.131

F1 · shares: On February 8, 2018, the reporting person reported the number of shares of 3M Common Stock that will be delivered on a deferred basis as a result of the vesting of a 2015 performance share award made to the reporting person. The number of shares previously reported as being withheld for the payment of FICA taxes was estimated. This amendment is being filed to update the Form 4 with the actual number of shares withheld.

SEC source: 0001127602-18-007287 · form4a.xml · nonDerivative · entry 1

Bauman James L · CIK 0001628097 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,497.131

SEC source: 0001127602-18-007230 · form4a.xml · derivative · entry 3

Banovetz John Patrick · CIK 0001711228 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,438

Underlying: Common Stock · 15,438 shares

Expires 2028-02-04

SEC source: 0001127602-18-007230 · form4a.xml · nonDerivative · entry 2

Banovetz John Patrick · CIK 0001711228 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,580.3359

F1 · shares: On February 8, 2018, the reporting person reported the imminent delivery of a number of shares of 3M Common Stock earned as a result of the 2015 performance shares awarded to the reporting person under the 3M Long-Term Incentive Plan. The number of shares to be withheld from this delivery for the payment of withholding taxes was estimated at that time. This amendment is being filed to update the Form 4 with the number of shares actually received after withholding taxes.

SEC source: 0001127602-18-007230 · form4a.xml · nonDerivative · entry 1

Banovetz John Patrick · CIK 0001711228 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,138.3359

SEC source: 0001127602-18-007565 · form4a.xml · derivative · entry 3

McGrath Marlene Mary · CIK 0001546559 · Senior VP - Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,200

Underlying: Common Stock · 22,200 shares

Expires 2028-02-04

SEC source: 0001127602-18-007565 · form4a.xml · nonDerivative · entry 2

McGrath Marlene Mary · CIK 0001546559 · Senior VP - Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,163.5406

F1 · shares: On February 8, 2018, the reporting person reported the imminent delivery of a number of shares of 3M Common Stock earned as a result of the 2015 performance shares awarded to the reporting person under the 3M Long-Term Incentive Plan. The number of shares to be withheld from this delivery for the payment of withholding taxes was estimated at that time. This amendment is being filed to update the Form 4 with the number of shares actually received after withholding taxes.

SEC source: 0001127602-18-007565 · form4a.xml · nonDerivative · entry 1

McGrath Marlene Mary · CIK 0001546559 · Senior VP - Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,922.5406

SEC source: 0001127602-18-007561 · form4a.xml · derivative · entry 3

Ludgate Kristen M · CIK 0001727434 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,518

Underlying: Common Stock · 5,518 shares

Expires 2028-02-04

SEC source: 0001127602-18-007561 · form4a.xml · nonDerivative · entry 2

Ludgate Kristen M · CIK 0001727434 · Sr Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 984.5828

F1 · shares: On February 8, 2018, the reporting person reported the imminent delivery of a number of shares of 3M Common Stock earned as a result of the 2015 performance shares awarded to the reporting person under the 3M Long-Term Incentive Plan. The number of shares to be withheld from this delivery for the payment of withholding taxes was estimated at that time. This amendment is being filed to update the Form 4 with the number of shares actually received after withholding taxes.