3M CO — Director's Dealing 2003

Oct 31, 2003

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2003-10-30

Reporting Person: NELSON RONALD G (VICE PRESIDENT & CONTROLLER)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2003-10-30	Common Stock	M	2100	$24.1186	Acquired	36254	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2003-10-30	Incentive Stock Option (right to buy)	$24.1186	M	2100	Disposed	2004-05-10	Common Stock (2100)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1810	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Incentive Stock Option (right to buy)	$28.6348	2005-05-09	Common Stock (3490)	3490	Direct
Incentive Stock Option (right to buy)	$31.5175	2006-05-14	Common Stock (3172)	3172	Direct
Incentive Stock Option (right to buy)	$43.35	2010-05-09	Common Stock (2306)	2306	Direct
Incentive Stock Option (right to buy)	$45.85	2007-05-13	Common Stock (2180)	2180	Direct
Incentive Stock Option (right to buy)	$46.675	2008-05-12	Common Stock (2142)	2142	Direct
Incentive Stock Option (right to buy)	$47.5	2009-05-10	Common Stock (2104)	2104	Direct
Incentive Stock Option (right to buy)	$58.625	2011-05-08	Common Stock (1704)	1704	Direct
Non-Qualified Stock Option (right to buy)	$46.675	2008-05-12	Common Stock (9018)	9018	Direct
Non-Qualified Stock Option (right to buy)	$47.5	2009-05-10	Common Stock (19016)	19016	Direct
Non-Qualified Stock Option (right to buy)	$48.875	2005-05-09	Common Stock (7572)	7572	Direct
Non-Qualified Stock Option (right to buy)	$52.5	2005-05-06	Common Stock (3130)	3130	Direct
Non-Qualified Stock Option (right to buy)	$52.5	2006-05-12	Common Stock (10140)	10140	Direct
Non-Qualified Stock Option (right to buy)	$58.625	2011-05-08	Common Stock (30896)	30896	Direct
Non-Qualified Stock Option (right to buy)	$61.85	2013-05-12	Common Stock (32600)	32600	Direct
Non-Qualified Stock Option (right to buy)	$62.3	2004-05-07	Common Stock (1550)	1550	Direct
Non-Qualified Stock Option (right to buy)	$62.3	2005-05-06	Common Stock (1116)	1116	Direct
Non-Qualified Stock Option (right to buy)	$62.3	2010-05-07	Common Stock (15074)	15074	Direct
Non-Qualified Stock Option (right to buy)	$64.5	2012-05-14	Common Stock (32600)	32600	Direct
Non-Qualified Stock Option (right to buy)	$69.35	2004-05-07	Common Stock (1706)	1706	Direct
Non-Qualified Stock Option (right to buy)	$69.35	2006-05-12	Common Stock (3238)	3238	Direct
Non-Qualified Stock Option (right to buy)	$69.35	2007-05-11	Common Stock (14620)	14620	Direct
Non-Qualified Stock Option (right to buy)	$69.35	2008-05-12	Common Stock (7768)	7768	Direct

Footnotes

F1: On September 29, 2003, the common stock of 3M Company split 2-for-1. The shares of common stock reported on Table I and all options reported on Table II have been adjusted to reflect the split.