Ownership Profile

Top Holders	Shares Held	% O/S	Share Change	Filing Date
PRIMECAP Management Company	4,922,181	8.9	-29,900	09/30/09
Blue Ridge Capital	3,024,000	5.4	0	09/30/09
Vanguard Group, Inc.	2,813,221	5.1	51,824	09/30/09
Manning & Napier Advisors, Inc.	2,169,225	3.9	460,440	09/30/09
Barclays Global Investors, N.A.	2,072,197	3.7	-32,145	09/30/09
State Street Global Advisors (US)	2,053,426	3.7	200,347	09/30/09
T. Rowe Price Associates, Inc.	1,629,872	2.9	-1,331,600	09/30/09
Pictet Asset Management Ltd.	1,447,310	2.6	-6,300	09/30/09
Eagle Capital Management L.L.C. (New York)	1,322,062	2.4	-30,235	09/30/09
Select Equity Group, Inc.	1,257,804	2.3	-110,922	09/30/09

Ownership data based on most recent publicly available data according to Thomson Financial.

IR CONTACT

Joshua S. Young
Director, Investor Relations
Tel: 978-715-1527
Joshua_Young@millipore.com

Millipore Contact Information

IR SERVICES

MIL (Common Stock)
11/20/09 4:02 p.m. ET
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Price	$67.73
Change	- 0.22
Volume	656,067

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Safe Harbor Statement

The information on the Millipore investor relations website, as well as in future oral and written statements by management of Millipore Corporation that are forward-looking statements, are based on current management expectations that involve substantial risks and uncertainties which could cause actual results to differ materially from the results expressed in, or implied by, these forward-looking statements.

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