MERCURY SYS INC

Ticker: MRCY CUSIP: 589378108 Class: Common Stock

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q3 2020

Shares 56,621 Value ($000) $4,386 Avg Close $75.86 Range $66.33 - $83.18

Q2 2020

Shares 20,937 Value ($000) $1,647 Avg Close $81.87 Range $65.87 - $96.29

Q3 2019

Shares 119,756 Value ($000) $9,721 Avg Close $79.00 Range $67.40 - $89.44

Q2 2019

Shares 111,456 Value ($000) $7,841 Avg Close $69.39 Range $63.39 - $79.83

Q3 2018

Shares 21,395 Value ($000) $1,184 Avg Close $48.40 Range $37.55 - $57.26

Q3 2017

Shares 16,300 Value ($000) $846 Avg Close $46.11 Range $39.96 - $52.00

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2020	56,621	$4,386	$75.86	$66.33 - $83.18
Q2 2020	20,937	$1,647	$81.87	$65.87 - $96.29
Q3 2019	119,756	$9,721	$79.00	$67.40 - $89.44
Q2 2019	111,456	$7,841	$69.39	$63.39 - $79.83
Q3 2018	21,395	$1,184	$48.40	$37.55 - $57.26
Q3 2017	16,300	$846	$46.11	$39.96 - $52.00