FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 [ X ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). 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 ALVARADO LINDA G 3M CO [ MMM ] (Last) (First) __ X __ Director 3. Date of Earliest Transaction (MM/DD/YYYY) (Middle) _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5/10/2016 924 W. COLFAX AVE (Street) 4. If Amendment, Date Original Filed (MM/DD/YYYY) 6. Individual or Joint/Group Filing (Check Applicable Line) DENVER, CO 80204 (City) 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) (State) _ 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 Common Stock 5/10/2016 V A 4. Securities Acquired (A) 5. Amount of Securities Beneficially Owned or Disposed of (D) Following Reported Transaction(s) (Instr. 3, 4 and 5) (Instr. 3 and 4) Amount (A) or (D) Price 343 A $0 Common Stock 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 18179 (1) D 10870 (2) I 7. Nature of Indirect Beneficial Ownership (Instr. 4) By Corporation Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivate Security (Instr. 3) 2. Conversion 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 Amount or Number of Title Shares 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) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Explanation of Responses: ( 1) Includes shares acquired pursuant to 3M's Dividend Reinvestment Plan. ( 2) Includes acquisition of deferred dividend reinvestment shares pursuant to 3M's Compensation Plan for Non- Employee Directors. Reporting Owners Reporting Owner Name / Address ALVARADO LINDA G 924 W. COLFAX AVE DENVER, CO 80204 Relationships Director 10% Owner Officer Other X Signatures /s/ Sheila B. Claugherty, attorney-in-fact for Linda Alvarado 5/12/2016 ** 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. Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.