As filed with the Securities and Exchange Commission on June 8, 2006
Registration No. 333-118274
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Post-Effective
Amendment No. 4 to
Form S-3
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
THORATEC CORPORATION
(Exact Name of Registrant as Specified in its Charter)
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California
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94-234064 |
(State or Other Jurisdiction of
Incorporation or Organization)
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(I.R.S. Employer
Identification Number) |
6035 Stoneridge Drive
Pleasanton, California 94588
(925) 847-8600
(Address, including Zip Code, and Telephone Number,
including Area Code, of Registrants Principal Executive Offices)
David Lehman, Esq.
Vice President and General Counsel
Thoratec Corporation
6035 Stoneridge Drive
Pleasanton, California 94588
(925) 847-8600
(Address, including Zip Code, and Telephone Number,
including Area Code, of Agent for Service)
Copies to:
Gregory J. Conklin, Esq.
Gibson, Dunn & Crutcher LLP
One Montgomery Street, 31st Floor
San Francisco, California 94104
(415) 393-8200
Approximate Date of Commencement of Proposed Sale to the Public: From time to time after
the effective date of this Registration Statement.
If the only securities being registered on this form are being offered pursuant to dividend or
interest reinvestment plans, please check the following box. o
If any of the securities being registered on this form are to be offered on a delayed or
continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities
offered only in connection with dividend or interest reinvestment plans, check the following box.
x
If this form is filed to register additional securities for an offering pursuant to Rule
462(b) under the Securities Act, check the following box and list the Securities Act registration
statement number of the earlier effective registration statement for the same offering. o
If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities
Act, check the following box and list the Securities Act registration statement number of the
earlier effective registration statement for the same offering. o
If delivery of this prospectus is expected to be made pursuant to Rule 434, check the
following box. o
DEREGISTRATION OF SECURITIES
The purpose of this Post-Effective Amendment No. 4 (this Amendment) to the Registration Statement
on Form S-3 (Registration No. 333-118274) (the Registration Statement) of Thoratec Corporation, a
California corporation (Thoratec), is to deregister all Senior Subordinated Convertible Notes due
2034 (the Notes) issued by Thoratec on May 24, 2004 and June 7, 2004, and all shares of Common
Stock, no par value per share of Thoratec (the Common Stock), issuable upon conversion of the
Notes, and not sold pursuant to the Registration Statement prior to the date this Amendment is
filed. The Registration Statement was filed pursuant to a Registration Rights Agreement, dated May
24, 2004 (the Registration Rights Agreement), by and between Thoratec and Merrill Lynch, Pierce,
Fenner & Smith Incorporated, as the initial purchaser. Pursuant to the Registration Rights
Agreement, Thoratec agreed to use reasonable efforts to keep the Registration Statement effective
with respect to the Notes and the shares of Common Stock issuable upon conversion of the Notes
until the earliest to occur of: the last date of the holding period applicable to sales of
securities under Rule 144(k), the date as of which all securities may be sold without restriction
under Rule 144, and the date as of which all securities registrable thereunder have been sold
pursuant to the Registration Statement. June 7, 2006 was the last date of the holding period
applicable to sales of securities under Rule 144(k), and therefore Thoratec is filing this
Amendment to deregister all Notes and shares of Common Stock issuable upon conversion of the Notes,
and not sold pursuant to the Registration Statement prior to the date this Amendment is filed.
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has
duly caused this Post-Effective Amendment No. 4 to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the city of Pleasanton, state of
California, on June 8, 2006.
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THORATEC CORPORATION
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By: |
/s/ Gerhard F. Burbach |
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Gerhard F. Burbach |
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Director, President and Chief Executive Officer |
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