FIRST AMENDMENT TO LEASE
FIRST AMENDMENT TO LEASE dated as of this 3 rd day of May 2010, by and between BP
RESERVOIR PLACE LLC, a Delaware limited liability company (successor-in-interest to Boston Properties
Limited Partnership) (“Landlord”) and CONSTANT CONTACT, INC., a Delaware corporation (“Tenant”).
By Lease dated May 29, 2009 (the “Lease”), Landlord did lease to Tenant and Tenant did lease from
Landlord certain premises (the “Premises”) in the building known as Reservoir Place Main and numbered 1601
Trapelo Road, Waltham, Massachusetts (the “Building”) as set forth in the Lease.
The initial premises leased by Tenant under the Lease consists of 85,583 square feet of rentable floor area
located on the third (3 rd ) floor of the building (the “Initial Premises”). Article XVII of the Lease provides for
portions of the second (2 nd ) and third (3 rd ) floors of the Building, compromising an additional 52,844 rentable
square feet (collectively defined in the Lease as the “Must Take Premises” and individually defined in the Lease
as “Premises Components”), to be incorporated into the Premises at the times and upon the terms set forth in the
Landlord and Tenant are entering into this First Amendment to Lease (the “Amendment”) to acknowledge
those Premises Components which have previously been delivered to Tenant, to acknowledge certain Premises
Components which are scheduled to be delivered to Tenant and to amend the Lease with regard to the process
for incorporating Premises Components into the Premises.
NOW THEREFORE, in consideration of One Dollar ($1.00) and other good and valuable consideration in
hand this date paid by each of the parties to the other, the receipt and sufficiency of which are hereby severally
acknowledged, and in further consideration of the mutual promises herein contained, Landlord and Tenant,
hereby agree to and with each other as follows:
1. Section 17.2(B) of the Lease is hereby deleted in its entir