CUSIP NO. 862221
Exhibit I
AGREEMENT RE JOINT FILING OF
SCHEDULE 13D
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The undersigned agree as follows:
(i) Each of them is individually eligible to use the Schedule 13D to which
this Exhibit is attached, and such Schedule 13D is filed on behalf of each of
them; and
(ii) Each of them is responsible for the timely filing of such Schedule 13D
and any amendments thereto, and for the completeness and accuracy of the
information concerning such person contained therein; but none of them is
responsible for the completeness or accuracy of the information concerning the
other persons making the filing, unless such person knows or has reason to
believe that such information is inaccurate.
Date: June 17, 1998
PRUDENTIAL PRIVATE EQUITY INVESTORS III, L.P.
By: Prudential Equity Investors, Inc.
Its: General Partner
By: /s/Xxxxx X. Xxxxxxxx
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Name: Xxxxx X. Xxxxxxxx
Title: President
CORNERSTONE EQUITY INVESTORS, L.L.C.
By: /s/Xxxx Xxxxx
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Name: Xxxx Xxxxx
Title: Senior Managing Director
PRUDENTIAL EQUITY INVESTORS, INC.
By: /s/Xxxxx X. Xxxxxxxx
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Name: Xxxxx X. Xxxxxxxx
Title: President
THE PRUDENTIAL INSURANCE COMPANY OF AMERICA
By: /s/Xxxxx X. Xxxxxxxx
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Name: Xxxxx X. Xxxxxxxx
Title: Vice President
