<PAGE>
AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 9, 1998
Registration No. 333-42167
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
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POST-EFFECTIVE AMENDMENT NO. 1
TO
FORM S-3
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
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PRI AUTOMATION, INC.
(Exact name of registrant as specified in its charter)
MASSACHUSETTS 04-2495703
(State or other jurisdiction (I.R.S. employer
of incorporation or organization) identification number)
805 Middlesex Turnpike
BILLERICA, MASSACHUSETTS 01821
(978) 663-8555
(Address, including zip code, and telephone number, including area code, of
registrant=s principal executive offices)
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MITCHELL G. TYSON
President and Chief Executive Officer
PRI Automation, Inc.
805 Middlesex Turnpike
Billerica, Massachusetts 01821
(978) 670-4270
(Name, address, including zip code, and telephone number, including area code,
of agent for service)
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Copies to:
ROBERT L. BIRNBAUM, ESQ.
WILLIAM R. KOLB, ESQ.
Foley, Hoag & Eliot LLP
One Post Office Square
Boston, Massachusetts 02109
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The Registrant hereby withdraws from registration all of those
shares of its common stock, $.01 par value per share, registered pursuant
to its Registration Statement on Form S-3 (registration number 333-42167) for
sale from time to time by certain selling stockholders (as named in such
Registration Statement) which have not been sold as of the time of filing of
this Post-Effective Amendment No. 1.
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SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Post-Effective Amendment No. 1 to Registration Statement to
be signed on its behalf by the undersigned, thereunto duly authorized, in the
City of Billerica, Massachusetts, on this 9th day of December, 1998.
PRI AUTOMATION, INC.
By: /s/ Stephen D. Allison
---------------------------------
Stephen D. Allison
Chief Financial Officer
Pursuant to the requirements of the Securities Act of 1933, this Post-
Effective Amendment No. 1 to Registration Statement has been signed on this
9th day of December, 1998 by the following persons in the capacities indicated.
SIGNATURE TITLE
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* Chairman of the Board, Treasurer and
- --------------------------------- Director
Mordechai Wiesler
* President, Chief Executive Officer and
- --------------------------------- Director
Mitchell G. Tyson
* Chief Financial Officer
- ---------------------------------
Stephen D. Allison
* Director
- ---------------------------------
Alexander V. d'Arbeloff
* Director
- ---------------------------------
Boruch B. Frusztajer
* Director
- ---------------------------------
Amram Rasiel
*By /s/ Stephen D. Allison
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Stephen D. Allison
Attorney-in-fact
