FORM 3
        
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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 *

Reinseth Theresa E

2. Date of Event Requiring Statement (MM/DD/YYYY)
4/1/2019 

3. Issuer Name and Ticker or Trading Symbol

3M CO [MMM]

(Last)        (First)        (Middle)

3M CENTER

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                            _____ 10% Owner
___ X ___ Officer (give title below)          _____ Other (specify below)
Vice President/CAO /

(Street)

MAPLEWOOD, MN 55144       

(City)              (State)              (Zip)
5. If Amendment, Date Original Filed (MM/DD/YYYY)

 

6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person


Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock   835.4771   D    
Common Stock   444   I   By 401k/paesop Trust  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(MM/DD/YYYY)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units     (1)   (1) Common Stock   394     (2) D    
Restricted Stock Units     (3)   (3) Common Stock   289     (2) D    
Restricted Stock Units     (4)   (4) Common Stock   269     (2) D    
Non-qualified Stock Option (Right to Buy)   2/7/2013   2/7/2022   Common Stock   33   $87.89   D    
Non-qualified Stock Option (Right to Buy)   2/5/2014   2/3/2023   Common Stock   795   $101.49   D    
Non-qualified Stock Option (Right to Buy)   2/4/2015   2/2/2024   Common Stock   913   $126.72   D    
Non-qualified Stock Option (Right to Buy)   2/3/2016   2/3/2025   Common Stock   368   $165.94   D    
Non-qualified Stock Option (Right to Buy)   2/2/2017   2/2/2026   Common Stock   1664   $147.87   D    
Non-qualified Stock Option (Right to Buy)   2/7/2018   2/7/2027   Common Stock   2947   $175.76   D    
Non-qualified Stock Option (Right to Buy)   2/6/2019   2/4/2028   Common Stock   1621   $233.63   D    
Non-qualified Stock Option (Right to Buy)   2/4/2020   2/4/2029   Common Stock   1578   $201.12   D    

Explanation of Responses:
(1)  The restricted stock units will vest 100% three years from the grant date of 02/07/2017.
(2)  Each restricted stock unit represents a contingent right to receive one share of 3M common stock.
(3)  The restricted stock units will vest 100% three years from the grant date of 02/26/2018.
(4)  The restricted stock units will vest 100% in three years from the grant date of 02/05/2019.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Reinseth Theresa E
3M CENTER
MAPLEWOOD, MN 55144


Vice President/CAO

Signatures
/s/ Sheila B. Claugherty, attorney-in-fact for Ms. Reinseth 4/8/2019
** 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 5(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.
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