SEC FORM 3

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

MAHAN JAMES T

(Last)

(First)

(Middle)

(Street)

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
07/01/2003

3. Issuer Name and Ticker or Trading Symbol
3M CO [ MMM ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
VICE PRESIDENT ENGRG MFG &

5. If Amendment, Date of 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

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	9,163	D
Common Stock	1,624	I	by 401k/PAESOP Trust

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Incentive Stock Option (right to buy)	05/14/1997	05/14/2006	Common Stock	1,586	63.035	D
Incentive Stock Option (right to buy)	05/09/2001	05/09/2010	Common Stock	1,153	86.7	D
Incentive Stock Option (right to buy)	05/13/1998	05/13/2007	Common Stock	1,090	91.7	D
Incentive Stock Option (right to buy)	05/12/1999	05/12/2008	Common Stock	1,071	93.35	D
Incentive Stock Option (right to buy)	05/11/2000	05/10/2009	Common Stock	1,052	95	D
Incentive Stock Option (right to buy)	05/08/2002	05/08/2011	Common Stock	852	117.25	D
Non-Qualified Stock Option (right to buy)	05/08/2002	05/08/2011	Common Stock	4,053	117.25	D
Non-Qualified Stock Option (right to buy)	05/14/2004	05/12/2013	Common Stock	13,200	123.7	D
Non-Qualified Stock Option (right to buy)	12/03/2002	05/07/2004	Common Stock	243	125.3	D
Non-Qualified Stock Option (right to buy)	12/03/2002	05/06/2005	Common Stock	470	125.3	D
Non-Qualified Stock Option (right to buy)	12/03/2002	05/12/2006	Common Stock	635	125.3	D
Non-Qualified Stock Option (right to buy)	12/03/2002	05/11/2007	Common Stock	705	125.3	D
Non-Qualified Stock Option (right to buy)	12/03/2002	05/12/2008	Common Stock	3,504	125.3	D
Non-Qualified Stock Option (right to buy)	12/03/2002	05/11/2009	Common Stock	3,268	125.3	D
Non-Qualified Stock Option (right to buy)	09/19/2003	05/12/2006	Common Stock	126	129	D
Non-Qualified Stock Option (right to buy)	09/19/2003	05/11/2007	Common Stock	2,682	129	D
Non-Qualified Stock Option (right to buy)	09/19/2003	05/11/2009	Common Stock	280	129	D
Non-Qualified Stock Option (right to buy)	09/19/2003	05/07/2010	Common Stock	3,222	129	D
Non-Qualified Stock Option (right to buy)	09/19/2004	05/06/2011	Common Stock	2,816	129	D
Non-Qualified Stock Option (right to buy)	05/15/2003	05/14/2012	Common Stock	7,900	129	D

Explanation of Responses:

	By: George Ann Biros For: James T. Mahan	07/08/2003
	** 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 Number.