<PAGE> 1
As filed with the Securities and Exchange Commission on January 11, 2001
Registration No. 333-63439
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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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ASPEN TECHNOLOGY, INC.
(Exact name of registrant as specified in its charter)
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DELAWARE 04-2739697
(State or other jurisdiction of (I.R.S. Employer Identification No.)
incorporation or organization)
Ten Canal Park
Cambridge, Massachusetts 02141
(617) 949-1000
(Address, including zip code, and telephone number, including area
code, of registrant's principal executive offices)
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LAWRENCE B. EVANS
Chairman of the Board and Chief Executive Officer
Aspen Technology, Inc.
Ten Canal Park
Cambridge, Massachusetts 02141
(617) 949-1000
(Name, address, including zip code, and telephone number, including area
code, of agent for service)
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Copies to:
MICHAEL J. MUSCATELLO, ESQ. MARK L. JOHNSON, ESQ.
General Counsel Hale and Dorr LLP
Aspen Technology, Inc. 60 State Street
Ten Canal Park Boston, Massachusetts 02109
Cambridge, Massachusetts 02141 Telephone: (617) 526-6000
Telephone: (617) 949-1000 Fax: (617) 526-5000
Fax: (617) 949-1717
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This registrant hereby withdraws from registration all of its 5 1/4%
convertible subordinated debentures due June 15, 2005 registered pursuant to its
registration statement on Form S-3 (registration number 333-63439) and not 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 on
Form S-3 to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Cambridge, Commonwealth of Massachusetts, as of
January 10, 2001.
ASPEN TECHNOLOGY, INC.
By: /s/ Lisa A. Zappala
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Lisa A. Zappala
Senior Vice President and 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 as of
January 10, 2001 by the following persons in the capacities indicated.
Signature Title
--------- -----
* Chairman of the Board and Chief Executive
-------------------------------- Officer (Principal Executive Officer)
Lawrence B. Evans
/s/ Lisa W. Zappala Senior Vice President and Chief Financial
-------------------------------- Officer (Principal Financial and
Lisa W. Zappala Accounting Officer)
* Director
--------------------------------
Joseph F. Boston
* Director
--------------------------------
Gresham T. Brebach, Jr.
* Director
--------------------------------
Douglas R. Brown
Director
--------------------------------
Stephen L. Brown
Director
--------------------------------
Stephen M. Jennings
-------------------------------- Director
Joan C. McArdle
*By: /s/ Lisa W. Zappala
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Lisa W. Zappala
Attorney-in-fact
