<PAGE>
Exhibit 99.1
PROXY
RATIONAL SOFTWARE CORPORATION
PROXY FOR SPECIAL MEETING OF STOCKHOLDERS
February 13, 2001
THIS PROXY IS SOLICITED ON BEHALF OF THE SPECIAL COMMITTEE
OF THE BOARD OF DIRECTORS OF RATIONAL SOFTWARE CORPORATION
The undersigned hereby appoints Thomas F. Bogan and Timothy A. Brennan, or
either of them, each with full power of substitution, to represent the
undersigned at the special meeting of stockholders of Rational Software
Corporation and at any adjournments of the special meeting, and to vote, as
designated below, the number of shares the undersigned would be entitled to
vote if personally present at the meeting. The special meeting will be held at
8:00 a.m. Pacific time on February 13, 2001 at our offices located at 18880
Homestead Road, Cupertino, California 95014.
THE SPECIAL COMMITTEE OF THE BOARD OF DIRECTORS
RECOMMENDS THAT YOU VOTE FOR PROPOSAL NO. 1
(CONTINUED AND TO BE SIGNED ON REVERSE SIDE.)
/\ FOLD AND DETACH HERE /\
<PAGE>
<TABLE>
<S> <C> <C>
1. TO APPROVE THE ISSUANCE OF RATIONAL FOR AGAINST ABSTAIN THIS PROXY WHEN PROPERLY EXECUTED WILL
SOFTWARE CORPORATION COMMON STOCK [_] [_] [_] BE VOTED AS DIRECTED. WHEN NO CHOICE IS
PURSUANT TO A MERGER AGREEMENT IN WHICH INDICATED, THIS PROXY WILL BE VOTED FOR
CATAPULSE INC. WILL MERGE WITH AND INTO EACH PROPOSAL.
RATIONAL AND AS A RESULT OF WHICH,
CATAPULSE STOCKHOLDERS WILL BECOME WHETHER OR NOT YOU PLAN TO ATTEND THE
STOCKHOLDERS OF RATIONAL. SPECIAL MEETING IN PERSON, WE URGE YOU TO
COMPLETE, DATE, SIGN AND PROMPTLY MAIL
THIS PROXY IN THE ENCLOSED RETURN ENVELOPE
SO THAT YOUR SHARES MAY BE REPRESENTED AT
THE SPECIAL MEETING.
</TABLE>
and, in their discretion, to transact such other business as may properly
come before the special meeting or at any postponements or adjournments of the
special meeting.
Signature(s)_____________________________________ Date:________________, 2001
Please sign exactly as your name(s) appears on your stock certificate. If shares
of stock stand of record in the names of two or more persons or in the name of
husband and wife, whether as joint tenants or otherwise, both or all of such
persons should sign the proxy. If shares of stock are held of record by a
corporation, the proxy should be executed by the president or vice president and
the secretary or assistant secretary. Executors, administrators or other
fiduciaries who execute the above proxy for a deceased stockholder should give
their full title. Please date the proxy.
/\ FOLD AND DETACH HERE /\
