LOAN MODIFICATION AGREEMENT
This Loan Modification Agreement (this “Loan Modification Agreement”) is dated as of June 9, 2004, by and between
SILICON VALLEY BANK , a California-chartered bank, with its principal place of business at 3003 Tasman Drive, Santa Clara,
California 95054 and with a loan production office located at One Newton Executive Park, Suite 200, 2221 Washington Street,
Newton, Massachusetts 02462, doing business under the name “Silicon Valley East” (“Bank”) and NETSCOUT SYSTEMS,
INC. , a Delaware corporation with offices at 310 Littleton Road, Westford, Massachusetts 01886-4105 (“Borrower”).
1. DESCRIPTION OF EXISTING INDEBTEDNESS AND OBLIGATIONS . Among other indebtedness and obligations
which may be owing by Borrower to Bank, Borrower is indebted to Bank pursuant to a certain loan arrangement dated as of
March 12, 1998, evidenced by, among other documents, a certain Amended and Restated Loan and Security Agreement dated
as of March 12, 1998 between Borrower and Bank, as amended by certain Loan Modification Agreements between Borrower and
Bank dated March 11, 1999, March 10, 2000, June 27, 2000, March 9, 2001, August 14, 2001, September 7, 2001, March 10, 2002,
November 7, 2002, March 19, 2003, dated as of July 31, 2003, effective as of June 8, 2003 (as may be amended from time to time,
the “Loan Agreement”). The Loan Agreement established a working capital line of credit in favor of Borrower in the maximum
principal amount of Ten Million Dollars ($10,000,000.00) (the “Committed Revolving Line”). Capitalized terms used but not
otherwise defined herein shall have the same meaning as in the Loan Agreement.
Hereinafter, all indebtedness and obligations owing by Borrower to Bank shall be referred to as the “Obligations”.
2. DESCRIPTION OF COLLATERAL . Repayment of the Obligations is secured by the Collateral as described in the Loan
Agreement (together with any other collateral security granted to Bank, the “Security Documents”).