EXHIBIT 10.13
AMENDMENT NO. 5
TO AMTC CORPORATION STOCK OPTION AGREEMENT
This Agreement is entered into as of March 1, 2003, between Xxxxx X.
Xxxx ("Xxxx") and Zix Corporation, a Texas corporation ("ZixCorp"). Reference is
made to that certain AMTC Corporation Stock Option Agreement, effective as of
April 29, 1998, between Xxxx and ZixCorp (the "Xxxx Option").
1. Amendments. The Xxxx Option is amended as follows:
o Revise Section 5 in its entirety to read as follows:
"5. Expiration of Option. The Option shall expire, and shall not
be exercisable thereafter with respect to any vested shares of
Common Stock hereunder as to which the Option has not been
exercised, on the sixth anniversary of the Award Date."
o Delete clause (c) and renumber existing clause (d) as clause (c)
in Section 3.
2. No Other Changes. Other than as provided herein, the Xxxx Option shall
remain in full force and effect.
Executed on the dates set forth below, to be effective as of the date
first set forth above.
ZIX CORPORATION
By: /s/ Xxxxxx X. Xxxxxxxx
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Xxxxxx X. Xxxxxxxx,
Senior Vice President
Date: 3-07-03
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/s/ Xxxxx X. Xxxx
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Xxxxx X. Xxxx
Date: 2/28/2003
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/s/ Xxxxxx X. Xxxx
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Xxxxxx X. Xxxx
Date: 2-28-03
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