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*
MacDonald Robert D III

(Last) (First) (Middle)
3M CENTER

(Street)
ST. PAUL MN 55144

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
10/01/2004
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 MARKETING
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 10,798 D
Common Stock 1,693 I by 401k/PAESOP Trust
Common Stock 9,614 I by Spouse
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)
Date Exercisable Expiration Date Title Amount or Number of Shares
Incentive Stock Option (right to buy) 05/09/1996 05/09/2005 Common Stock 3,490 $28.6348 D
Incentive Stock Option (right to buy) 05/14/1997 05/14/2006 Common Stock 3,172 $31.5175 D
Incentive Stock Option (right to buy) 05/09/2001 05/09/2010 Common Stock 2,306 $43.35 D
Incentive Stock Option (right to buy) 05/13/1998 05/13/2007 Common Stock 2,180 $45.85 D
Incentive Stock Option (right to buy) 05/12/1999 05/12/2008 Common Stock 2,142 $46.675 D
Incentive Stock Option (right to buy) 05/11/2000 05/10/2009 Common Stock 2,104 $47.5 D
Incentive Stock Option (right to buy) 05/08/2002 05/08/2011 Common Stock 1,704 $58.625 D
Non-Qualified Stock Option (right to buy) 05/08/2002 05/08/2011 Common Stock 14,096 $58.625 D
Non-Qualified Stock Option (right to buy) 11/13/2003 05/06/2005 Common Stock 4,108 $61.85 D
Non-Qualified Stock Option (right to buy) 11/13/2003 05/12/2006 Common Stock 5,220 $61.85 D
Non-Qualified Stock Option (right to buy) 11/13/2003 05/11/2009 Common Stock 6,344 $61.85 D
Non-Qualified Stock Option (right to buy) 11/13/2003 05/07/2010 Common Stock 1,518 $61.85 D
Non-Qualified Stock Option (right to buy) 05/14/2004 05/12/2013 Common Stock 17,380 $61.85 D
Non-Qualified Stock Option (right to buy) 04/16/2003 05/11/2007 Common Stock 6,958 $61.9 D
Non-Qualified Stock Option (right to buy) 04/16/2003 05/12/2008 Common Stock 7,066 $61.9 D
Non-Qualified Stock Option (right to buy) 04/16/2003 05/11/2009 Common Stock 828 $61.9 D
Non-Qualified Stock Option (right to buy) 04/16/2003 05/07/2010 Common Stock 4,124 $61.9 D
Non-Qualified Stock Option (right to buy) 05/15/2003 05/14/2012 Common Stock 15,800 $64.5 D
Non-Qualified Stock Option (right to buy) 05/12/2005 05/09/2014 Common Stock 15,010 $84.4 D
Explanation of Responses:
By: George Ann Biros For: Robert D MacDonald 10/01/2004
** 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.