FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Ashish Khandpur K   2. Issuer Name and Ticker or Trading Symbol 3M CO [MMM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Sr. VP, Chief Tech. Officer (Last) (First) (Middle) 3M CENTER 3. Date of Earliest Transaction (Month/Day/Year) 08/14/2015 (Street) ST. PAUL, MN 55144-1000 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 10/28/2015   M   309 A $ 101.49 1,061 D   Common Stock 10/28/2015   S   309 D $ 156.49 752 D   Common Stock 10/28/2015   M   155 A $ 126.72 907 D   Common Stock 10/28/2015   S   155 D $ 156.49 752 D   Common Stock               752 (1) I by Spouse Common Stock               728 (2) I Spouse 401k/paesop

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units

(3)

08/14/2015

J

85 (4)

(5)

(5)

Common Stock

85

(6)

0

I

by Spouse

Restricted Stock Units

(3)

08/14/2015

J

93 (7)

(8)

(8)

Common Stock

93

(6)

0

I

by Spouse

Non-qualified Stock Option (Right to Buy) (9)

$ 101.49

08/14/2015

J

156 (10)

02/05/2014

02/03/2023

Common Stock

156

$ 0

309

I

by Spouse

Non-qualified Stock Option (Right to Buy) (11)

$ 126.72

08/14/2015

J

313 (10)

02/04/2015

02/02/2024

Common Stock

313

$ 0

155

I

by Spouse

Non-qualified Stock Option (Right to Buy) (9)

$ 101.49

10/28/2015

M

309

02/05/2014

02/03/2023

Common Stock

309

$ 0

0

I

by Spouse

Non-qualified Stock Option (Right to Buy) (11)

$ 126.72

10/28/2015

M

155

02/04/2015

02/02/2024

Common Stock

155

$ 0

0

I

by Spouse

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Ashish Khandpur K 3M CENTER ST. PAUL, MN 55144-1000			Sr. VP, Chief Tech. Officer

Signatures

/s/ Sheila B. Claugherty, attorney-in-fact for Ashish K. Khanpur		10/29/2015
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Includes shares acquired pursuant to 3M's Dividend Reinvestment Plan.
(2)	Includes shares acquired pursuant to the 3M Voluntary Investment Plan.
(3)	Each restricted stock unit represents a contingent right to receive one share of 3M common stock.
(4)	On August 14, 2015, the Issuer cancelled the option of 85 shares of 3M Common Stock granted to the reporting person on 2/4/2014, due to termination of service.
(5)	The restricted stock units will vest on 2/4/2017.
(6)	Each restricted stock unit represents a contingent right to receive one share of 3M common stock.
(7)	On August 14, 2015, the Issuer cancelled the option of 93 shares of 3M Common Stock granted to the reporting person on 2/5/2013, due to termination of service.
(8)	The restricted stock units will vest on 2/5/2016.
(9)	This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/5/2013).
(10)	On August 14, 2015, due to termination of service, the unvested portion of the option could not be exercised.
(11)	This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/4/2014).

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