Registration No. 333-103234 Filed pursuant to Rule 424(b)(3) Prospectus Supplement dated May 9, 2003 (To Prospectus dated May 9, 2003) $639,000,000 3M COMPANY LIQUID YIELD OPTION(TM) NOTES DUE 2032 (ZERO COUPON -- SENIOR) AND SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THE LIQUID YIELD OPTION(TM) NOTES ------------------------------------------ This document supplements the prospectus dated May 9, 2003 relating to the resale by holders of Liquid Yield Option(TM) Notes due 2032 (Zero Coupon - Senior) (the "LYONs") and the shares of our common stock into which the LYONs are convertible. This prospectus supplement is incorporated by reference into, and should be read in conjunction with, the prospectus dated May 9, 2003, as amended or supplemented. This prospectus supplement is not complete without, and may not be delivered or utilized except in connection with, the prospectus, as amended or supplemented. The table of selling securityholders contained on pages 29-31 of the prospectus dated May 9, 2003 is hereby replaced in its entirety by the table set forth below.
SHARES OF PRINCIPAL COMMON LYONs COMMON STOCK AMOUNT OF STOCK COMMON OWNED OWNED LYONS BENEFICIALLY STOCK AFTER AFTER BENEFICIALLY OWNED UPON OFFERED UPON COMPLETION COMPLETION OWNED AND CONVERSION CONVERSION OF OF NAME OFFERED OF LYONs(1) OF LYONs(1) OFFERING(2) OFFERING(2) - ---- ---------- ----------- ------------ ----------- ----------- Advisory Convertible Arbitrage Fund(I)L.P.(4) 1,200,000 5,676.1 5,676.1 0 - Akela Capital Master Fund, Ltd. 5,000,000 23,650.5 23,650.5 0 - Allstate Life Insurance Company(4) 1,250,000 5,912.6 5,912.6 0 - Aloha Airlines Non-Pilots Pension Trust 210,000 993.3 993.3 0 - Aloha Pilots Retirement Trust 115,000 544.0 544.0 0 - American Investors Life Insurance Co. 100,000 473.0 473.0 0 - Amerisure Mutual Insurance Company 320,000 1,513.6 1,513.6 0 - AmerUs Life Insurance Co. 1,300,000 6,149.1 6,149.1 0 - Arbitex Master Fund, L.P.(4) 19,100,000 90,344.9 90,344.9 0 - Argent Classic Convertible Arbitrage Fund (Bermuda) Ltd. 3,300,000 15,609.3 15,609.3 0 - Argent Low Lev Convertible Arbitrage Fund LLC 900,000 4,257.1 4,257.1 0 - Argent Low Lev Convertible Arbitrage Fund Ltd. 5,500,000 26,015.6 26,015.6 0 - Arpeggio Fund(4) 7,700,000 36,421.8 36,421.8 0 - Banc of America Securities, LLC(5) 4,438,000 20,992.2 20,992.2 0 - Bankers Life Insurance Company of New York 100,000 473.0 473.0 0 - C&H Sugar Company Inc. 265,000 1,253.5 1,253.5 0 - Canyon Capital Arbitrage Master Fund, Ltd.(4) 9,000,000 42,570.9 42,570.9 0 - Canyon Value Realization Fund (Cayman), Ltd.(4) 13,500,000 63,856.4 63,856.4 0 - Canyon Value Realization Fund, L.P.(4) 6,000,000 28,380.6 28,380.6 0 - Canyon Value Realization MAC 18, Ltd.(RMF)(4) 1,500,000 7,095.2 7,095.2 0 - CitiSAM Ltd.(4) 1,000,000 4,730.1 4,730.1 0 - Clinton Multistrategy Master Fund, Ltd. 10,000,000 47,301.0 47,301.0 0 - Clinton Riverside Convertible Portfolio Limited 10,000,000 47,301.0 47,301.0 0 - CSV Limited(4) 1,800,000 8,514.2 8,514.2 0 - Deutsche Bank AG - London(4) 8,000,000 37,840.8 37,840.8 0 - DNB Investment 500,000 2,365.1 2,365.1 0 - Dodeca Fund, L.P. 900,000 4,257.1 4,257.1 0 - Drury University 50,000 236.5 236.5 0 - Excellus Health Plan Inc. 2,000,000 9,460.2 9,460.2 0 - Goldman Sachs, & Co.(5) 7,380,000 34,908.1 34,908.1 0 - Hawaiian Airlines Employees Pension Plan - IAM 85,000 402.1 402.1 0 - Hawaiian Airlines Pension Plan for Salaried Employees 15,000 71.0 71.0 0 - Hawaiian Airlines Pilots Retirement Plan 190,000 898.7 898.7 0 - Hillbloom Foundation 85,000 402.1 402.1 0 - IL Annuity and Insurance Co. 11,100,000 52,504.1 52,504.1 0 - IMF Convertible Fund(4) 800,000 3,784.1 3,784.1 0 - Innovest Finanzdienstle 900,000 4,257.1 4,257.1 0 -
[WIDE TABLE CONTINUED FROM ABOVE]
MATERIAL NAME RELATIONSHIP(3) - ---- --------------- Advisory Convertible Arbitrage Fund(I)L.P.(4) None Akela Capital Master Fund, Ltd. None Allstate Life Insurance Company(4) None Aloha Airlines Non-Pilots Pension Trust None Aloha Pilots Retirement Trust None American Investors Life Insurance Co. None Amerisure Mutual Insurance Company None AmerUs Life Insurance Co. None Arbitex Master Fund, L.P.(4) None Argent Classic Convertible Arbitrage Fund (Bermuda) Ltd. None Argent Low Lev Convertible Arbitrage Fund LLC None Argent Low Lev Convertible Arbitrage Fund Ltd. None Arpeggio Fund(4) None Banc of America Securities, LLC(5) None Bankers Life Insurance Company of New York None C&H Sugar Company Inc. None Canyon Capital Arbitrage Master Fund, Ltd.(4) None Canyon Value Realization Fund (Cayman), Ltd.(4) None Canyon Value Realization Fund, L.P.(4) None Canyon Value Realization MAC 18, Ltd.(RMF)(4) None CitiSAM Ltd.(4) None Clinton Multistrategy Master Fund, Ltd. None Clinton Riverside Convertible Portfolio Limited None CSV Limited(4) None Deutsche Bank AG - London(4) None DNB Investment None Dodeca Fund, L.P. None Drury University None Excellus Health Plan Inc. None Goldman Sachs, & Co.(5) None Hawaiian Airlines Employees Pension Plan - IAM None Hawaiian Airlines Pension Plan for Salaried Employees None Hawaiian Airlines Pilots Retirement Plan None Hillbloom Foundation None IL Annuity and Insurance Co. None IMF Convertible Fund(4) None Innovest Finanzdienstle None
Investcorp - SAM Fund Ltd.(4) 4,400,000 20,812.4 20,812.4 0 - JMG Convertible Investments, LP 7,250,000 34,293.2 34,293.2 0 - Lehman Brothers Inc(5) 45,650,000 215,929.1 215,929.1 0 - Lyxor Master Fund (4) 5,000,000 23,650.5 23,650.5 0 - Lyxor Master Fund Ref: Argent LowLev CB c/o Argent 1,200,000 5,676.1 5,676.1 0 - McMahan Securities Co. L.P.(5) 1,500,000 7,095.2 7,095.2 0 - Med America Insurance Co. 2,430,000 11,494.1 11,494.1 0 - Med America Insurance Co. of N.Y. 340,000 1,608.2 1,608.2 0 - Merrill Lynch Pierce Fenner & Smith Inc.(5) 9,039,000 42,755.4 42,755.4 0 - MLQA Convertible Securities Arbitrage, Ltd.(4) 10,000,000 47,301.0 47,301.0 0 - Morgan Stanley Dean Witter Convertible Securities Trust(4) 3,000,000 14,190.3 14,190.3 0 - NACM Investment Grade Convertible 10,000 47.3 47.3 0 - Nomura Securities Intl Inc(5) 5,000,000 23,650.5 23,650.5 0 - Partners Group Alternative Strategies PCC, Ltd. 200,000 946.0 946.0 0 - Quest Global Convertible Master Fund, Ltd. 2,000,000 9,460.2 9,460.2 0 - RBC Alternative Assets LP(4) 200,000 946.0 946.0 0 - Rhapsody Fund, L.P.(4) 10,000,000 47,301.0 47,301.0 0 - State of Oregon/SAIF Corporation 6,500,000 30,745.7 30,745.7 0 - Sunrise Partners Limited Partnership(4) 1,000,000 4,730.1 4,730.1 0 - Sutton Brook Capital Portfolio LP 35,000,000 165,553.5 165,553.5 0 - Teachers Insurance and Annuity Association 10,000,000 47,301.0 47,301.0 0 - Thrivent Financial for Lutherans(4) 1,500,000 7,095.2 7,095.2 0 - Topanga XI(4) 2,000,000 9,460.2 9,460.2 0 - US Bank FBO Benedictine Health System 350,000 1,655.5 1,655.5 0 - Wachovia Securities International Ltd.(4) 20,000,000 94,602.0 94,602.0 0 - Windmill Master Fund LP 5,000,000 23,650.5 23,650.5 0 - Xavex Convertible Arbitrage 2 Fund 200,000 946.0 946.0 0 - Other(6) 314,628,000 1,488,221.9 1,488,221.9 0 -
[WIDE TABLE CONTINUED FROM ABOVE
Investcorp - SAM Fund Ltd.(4) JMG Convertible Investments, LP None Lehman Brothers Inc(5) None Lyxor Master Fund (4) None Lyxor Master Fund Ref: Argent LowLev CB None c/o Argent McMahan Securities Co. L.P.(5) None Med America Insurance Co. None Med America Insurance Co. of N.Y. None Merrill Lynch Pierce Fenner & Smith Inc.(5) None Aulana Peters is a director of Merrill Lynch & Co and has been a director of 3M since 1990. Further, Merrill Lynch Pierce Fenner & Smith may or may not have acted in a financial investment advisory capacity to 3M within the past 3 years. MLQA Convertible Securities Arbitrage, Ltd.(4) None Morgan Stanley Dean Witter Convertible Securities Trust(4) None NACM Investment Grade Convertible None Nomura Securities Intl Inc(5) None Partners Group Alternative Strategies PCC, Ltd. None Quest Global Convertible Master Fund, Ltd. None RBC Alternative Assets LP(4) None Rhapsody Fund, L.P.(4) None State of Oregon/SAIF Corporation None Sunrise Partners Limited Partnership(4) None Sutton Brook Capital Portfolio LP None Teachers Insurance and Annuity Association None Thrivent Financial for Lutherans(4) None Topanga XI(4) None US Bank FBO Benedictine Health System None Wachovia Securities International Ltd.(4) None Windmill Master Fund LP None Xavex Convertible Arbitrage 2 Fund None Other(6)
(1) Represents shares of common stock issuable upon conversion of LYONs, at the rate of 4.7301 shares of common stock per $1,000 principal amount of maturity of LYONs, that would be beneficially owned and offered by the selling security holder upon such conversion. This conversion rate is subject to adjustment, however, as described under "Description of LYONs--Conversion Rights--Conversion Adjustments and Delivery of Common Stock." As a result, the number of shares of common stock issuable upon conversion of the LYONs may increase or decrease in the future. 3M has the right to deliver, in lieu of common stock, cash upon conversion, as described in this Prospectus. (2) Assumes that all the LYONs and/or all of the common stock into which the LYONs are convertible are sold. No selling security holder will own more than 1% of the common stock after the offering by the selling stockholder. (3) Includes any position, office or other material relationship which the selling security holder has had within the past three years with 3M or any of its affiliates. (4) This selling securityholder has represented to 3M that, although it is affiliated with a securities broker or dealer, the selling securityholder purchased the securities shown in the ordinary course of business, and at the time of the purchase of the securities, the selling securityholder had no agreements or understandings, directly or indirectly, with any person to distribute the securities. (5) This selling securityholder has identified itself as a securities broker or dealer, and accordingly it is deemed to be an "underwriter" within the meaning of Section 2(a)(11) of the Securities Act. (6) Assumes that none of the holders of LYONs who have not yet returned their questionnaire beneficially own any other shares of our common stock. Other selling securityholders may be identified at a later date and will be included in a post-effective amendment to the registration statement. To the extent that they are brokers or dealers, disclosure will be made that they are deemed to be "underwriters" within the meaning of Section 2(a)(11) of the Securities Act. See the "Risk Factors" section beginning on page 7 of the prospectus to read about factors you should consider before purchasing the LYONs. Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense. The date of this prospectus supplement is May 9, 2003 (TM) Trademark of Merrill Lynch & Co., Inc.