EXHIBIT 10.23 THIS OFFER TO SUBLEASE ("Sublease") made the 1st day of August 2002 BETWEEN: OPTIWAVE CORPORATION/CORPORATION OPTIWAVE (a Canadian corporation, hereinafter called the "Sublandlord" for the purpose of this Sublease only) OF THE FIRST PART...Zix Corp • March 21st, 2003 • Services-computer programming, data processing, etc. • Ontario
ZIX CORPORATIONAgreement • March 21st, 2003 • Zix Corp • Services-computer programming, data processing, etc.
EXHIBIT 10.25 THIS SUBLEASE AMENDMENT AGREEMENT made the 19th day of November 2002 BETWEEN: OPTIWAVE CORPORATION/CORPORATION OPTIWAVE (a Canadian corporation, hereinafter called the "Sublandlord") OF THE FIRST PART AND:Agreement • March 21st, 2003 • Zix Corp • Services-computer programming, data processing, etc.
AMENDMENT NO. 5 TO AMTC CORPORATION STOCK OPTION AGREEMENTAmtc Corporation Stock Option Agreement • March 21st, 2003 • Zix Corp • Services-computer programming, data processing, etc.
