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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1078075	Netscout Systems Inc	NTCT	Services-Computer Integrated Systems Design (7373)	042837575

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1232884	Michael Szabados	C/O Netscout Systems, Inc. 310 Littleton Road Westford MA 01886	Chief Operating Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2010-05-04	1,250	$4.30	74,118	No	4	M	Direct
Common Stock	Disposition	2010-05-04	1,250	$13.94	72,868	No	4	S	Direct
Common Stock	Disposition	2010-05-04	10,000	$13.79	62,868	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Options (Right to Buy)	Disposition	2010-05-04	1,250	$0.00	1,250	$4.30

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2012-07-17	No	4	M	Direct

Footnotes

Option was exercised and related Common stock was sold pursuant to a 10b5-1 plan.
The shares sold on this date were sold in multiple transactions. This price is the weighted average sales price per share; the actual sales price per share ranged from $13.87 to $14.20.
The shares of Common Stock were sold pursuant to a 10b5-1 plan.
The shares sold on this date were sold in multiple transactions. This price is the weighted average sales price per share; the actual sales price per share ranged from $13.65 to $14.28.
The initial portion of the option grant initially became exercisable on July 17, 2003 and the remainder vested in equal quarterly installments thereafter.