FIRST AMENDMENT TO OFFICE LEASE
THIS FIRST AMENDMENT TO OFFICE LEASE (this "Amendment") is made as of this 2nd day of March,
2001, by and between CORNERSTONE SUBURBAN OFFICE, L.P., a Delaware limited partnership
("Landlord"), having an address at 311 South Wacker Drive, Suite 980, Chicago, Illinois 60606, and ANTRIM
CORPORATION, a Texas corporation ("Tenant"), having an address at 101 East Park Blvd., Suite 1200,
Plano, Texas 75074.
A. Landlord's predecessor in title and Tenant entered into a certain lease dated June 1, 1996 (the "Lease"),
whereby Landlord's predecessor in title leased to Tenant certain premises consisting of approximately 47,420
rentable square feet of office space on the tenth (10th), eleventh (11th), twelfth (12th) and thirteenth (13th) floors
(the "Original Premises") of that certain building known as Bank of America Plano Tower located at 101 East
Park Blvd., Plano, Texas (the "Building"), for a lease term expiring on May 31, 2001 (the "Original Term").
B. Landlord acquired title to the Building and succeeded to the interest of the landlord under the Lease.
C. Landlord and Tenant desire to extend the Original Term of the Lease as provided herein.
D. Landlord and Tenant have further agreed that, subject to the terms and conditions of this Amendment, Tenant
shall vacate, and the Lease shall terminate solely as to, a portion of the Original Premises, and in connection
therewith, Landlord and Tenant desire to modify the Lease accordingly.
NOW, THEREFORE, for good and valuable consideration, the receipt and legal sufficiency of which are hereby
acknowledged, it is hereby agreed as follows:
1. DEFINITIONS. Each capitalized term used in this Amendment shall have the same meaning as is ascribed to
such capitalized term in the Lease, unless otherwise provided for herein.
2. EXTENSION OF TERM. The Expiration Date of the Original Term of the Lease is extended from May 31,
2001 to May 31, 2006. As used herein and in the Lease, the "Term" of the Lea