NETSCOUT SYS INC

Ticker: NTCT CUSIP: 64115T104 Class: Common Stock

ValueAct Holdings, L.P.'s Holding History (CIK: 0001418814)

Note: Option positions (PUT/CALL) are excluded.

Q2 2017

Shares 1,750,943 Value ($000) $60,232 Avg Close $36.18 Range $32.25 - $38.48

Q1 2017

Shares 2,300,000 Value ($000) $87,285 Avg Close $35.32 Range $29.50 - $38.45

Q4 2016

Shares 1,645,000 Value ($000) $51,818 Avg Close $30.68 Range $26.25 - $33.83

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	1,750,943	$60,232	$36.18	$32.25 - $38.48
Q1 2017	2,300,000	$87,285	$35.32	$29.50 - $38.45
Q4 2016	1,645,000	$51,818	$30.68	$26.25 - $33.83