UNITED
STATES
SECURITIES
AND EXCHANGE COMMISSION
|
Washington,
D.C. 20549
SCHEDULE
TO
|
(RULE
14d-100)
Tender
Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1)
of
the
Securities Exchange Act of 1934
|
VENTANA
MEDICAL SYSTEMS, INC.
|
(Name
of Subject Company)
|
ROCKET
ACQUISITION CORPORATION
ROCHE
HOLDING LTD
|
(Names
of Filing Persons – Offeror)
|
COMMON
STOCK, PAR VALUE $0.001 PER SHARE
|
(Title
of Class of Securities)
|
92276H106
|
(Cusip
Number of Class of Securities)
|
Beat
Kraehenmann
Roche
Holding Ltd
Grenzacherstrasse
124
CH-4070
Basel
Switzerland
Telephone:
+41-61-688-1111
|
(Name,
Address and Telephone Number of Person Authorized to Receive
Notices
and
Communications on Behalf of Filing Persons)
|
Copies
to:
|
Christopher
Mayer
Davis
Polk & Wardwell
450
Lexington Avenue
New
York, New York 10017
Telephone:
(212) 450-4000
|
x
Check the box if the filing relates solely to preliminary communications
made before the commencement of a tender offer.
|
Check
the appropriate boxes below to designate any transactions to which
the
statement relates:
x third-party
tender offer subject to Rule 14d-1.
o issuer
tender offer subject to Rule 13e-4.
o going-private
transaction subject to Rule 13e-3.
o amendment
to Schedule 13D under Rule 13d-2.
|
Check
the following box if the filing is a final amendment reporting the
results
of the tender offer. o
|
Dr.
Severin Schwan
CEO
Division Roche Diagnostics
Member
of the Executive Committee
|
|
F.
Hoffmann-La Roche Ltd.
|
CH
-
4070 Basel
|
Bldg
52/1611
|
Tel.
+41 61 687 31 88
Fax:
+41 61 691 9757
eMail:
severin.schwan@roche.com
|