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 OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940 1. Name and Address of Reporting Person * 2. Issuer Name and Ticker or Trading Symbol Singh Jesse G 3M CO [ MMM ] (Last) (First) _____ Director 3. Date of Earliest Transaction (MM/DD/YYYY) (Middle) (Street) (State) _____ Other (specify below) Senior Vice President 4. If Amendment, Date Original Filed (MM/DD/YYYY) 6. Individual or Joint/Group Filing (Check Applicable Line) ST. PAUL, MN 55144-1000 (City) _____ 10% Owner __ X __ Officer (give title below) 5/12/2016 3M CENTER 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _ X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code (Instr. 8) Code 4. Securities Acquired (A) or 5. Amount of Securities Beneficially Owned Disposed of (D) Following Reported Transaction(s) (Instr. 3, 4 and 5) (Instr. 3 and 4) V Amount (A) or (D) Price 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) Common Stock 5/12/2016 S 100 D $169.92 6339 D Common Stock 5/12/2016 S 300 D $169.93 6039 D Common Stock 5/12/2016 S 400 D $169.94 5639 D Common Stock 5/12/2016 S 100 D $169.96 5539 D Common Stock 5/12/2016 S 964 D $169.97 4575 D Common Stock 5/12/2016 M 10922 A $89.47 15497 D Common Stock 5/12/2016 S 522 D $169.88 14975 D Common Stock 5/12/2016 S 100 D $169.905 14875 D Common Stock 5/12/2016 S 10300 D $169.96 4575 D Common Stock 5/12/2016 M 12497 A $87.89 17072 D Common Stock 5/12/2016 S 97 D $169.84 16975 D Common Stock 5/12/2016 S 100 D $169.86 16875 D Common Stock 5/12/2016 S 200 D $169.895 16675 D Common Stock 5/12/2016 S 200 D $169.91 16475 D Common Stock 5/12/2016 S 100 D $169.94 16375 D Common Stock 5/12/2016 S 11700 D $169.95 4675 D Common Stock 5/12/2016 S 100 D $170.035 4575 D Common Stock 5/12/2016 M 9795 A $101.49 14370 D Common Stock 5/12/2016 S 95 D $169.99 14275 D Common Stock 5/12/2016 S 6800 D $170.005 7475 D Common Stock 5/12/2016 S 2600 D $170.01 4875 D Common Stock 5/12/2016 S 300 D $170.03 4575 D 7. Nature of Indirect Beneficial Ownership (Instr. 4) Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivate 2. Security Conversion (Instr. 3) or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed 4. Trans. Code 5. Number of 6. Date Exercisable and Execution (Instr. 8) Derivative Securities Expiration Date Date, if any Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) Code V (A) (D) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) Date Expiration Title Exercisable Date 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) Amount or Number of Shares Non-qualified Stock Option (Right to Buy) $78.72 5/12/2016 M 8906 2/9/2011 2/7/2020 Common Stock 8906 $0 0 D Non-qualified Stock Option (Right to Buy) $78.72 5/12/2016 M 3564 2/9/2011 2/7/2020 Common Stock 3564 $0 0 D Non-qualified Stock Option (Right to Buy) $89.47 5/12/2016 M 10922 2/8/2012 2/8/2021 Common Stock 10922 $0 0 D Non-qualified Stock Option (Right to Buy) $87.89 5/12/2016 M 12497 2/7/2013 2/7/2022 Common Stock 12497 $0 0 D (1) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivate 2. Security Conversion (Instr. 3) or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed 4. Trans. Code 5. Number of 6. Date Exercisable and Execution (Instr. 8) Derivative Securities Expiration Date Date, if any Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) Code V (A) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) Date Expiration Title Exercisable Date (D) 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) $0 0 D Amount or Number of Shares 11. Nature of Indirect Beneficial Ownership (Instr. 4) (2) Non-qualified Stock Option (Right to Buy) $101.49 5/12/2016 M 9795 2/5/2014 (3) 2/3/2023 Common Stock 9795 Explanation of Responses: ( 1) This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/8/2011). ( 2) This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/5/2013). ( 3) This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/5/2013). Remarks: 2 of 2 Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Singh Jesse G 3M CENTER ST. PAUL, MN 55144-1000 Other Senior Vice President Signatures /s/ Sheila B. Claugherty, attorney-in-fact for Jesse G. Singh 5/13/2016 ** Signature of Reporting Person Date Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. * 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). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. 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