NETSCOUT SYSTEMS INC — Director's Dealing 2011

Jan 27, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: NETSCOUT SYSTEMS INC (NTCT)
CIK: 0001078075
Period of Report: 2011-01-25

Reporting Person: SOMMERS DAVID P (CFO & VP General Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-01-25	Common Stock	M	31250	$5.26	Acquired	158046	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-01-25	Employee Stock Options (Right to Buy)	$5.26	M	31250	Disposed	2011-06-27	Common Stock (31250)	Direct

Footnotes

F1: The shares of Common Stock were acquired upon the exercise of an option grant pursuant to a 10b5-1 plan.

F2: 2,500 of these shares are held by a trust in which the reporting person has a pecuniary interest.

F3: The initial portion of the option grant initially became exercisable on June 27, 2002 and the remainder vested in equal quarterly installments thereafter.