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UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2009 Commission file number 1-3285
State of Incorporation: Delaware I.R.S. Employer Identification No. 41-0417775 Principal executive offices: 3M Center, St. Paul, Minnesota 55144 Telephone number: (651) 733-1110 SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: Title of each class Common Stock, Par Value $.01 Per Share Name of each exchange on which registered New York Stock Exchange, Inc. Chicago Stock Exchange, Inc.
Note: The common stock of the Registrant is also traded on the SWX Swiss Exchange. Securities registered pursuant to section 12(g) of the Act: None Yes x Yes o Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. No o Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. No x
Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No o Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of...