MERCURY SYS INC

Ticker: MRCY CUSIP: 589378108 Class: Common Stock

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q1 2018

Shares 15,800 Value ($000) $763 Avg Close $47.69 Range $41.64 - $52.59

Q4 2017

Shares 15,781 Value ($000) $810 Avg Close $51.31 Range $47.69 - $55.00

Q3 2017

Shares 416,189 Value ($000) $21,592 Avg Close $46.11 Range $39.96 - $52.00

Q2 2017

Shares 539,762 Value ($000) $22,719 Avg Close $39.30 Range $36.09 - $43.15

Q1 2017

Shares 537,665 Value ($000) $20,996 Avg Close $35.55 Range $29.31 - $40.86

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	15,800	$763	$47.69	$41.64 - $52.59
Q4 2017	15,781	$810	$51.31	$47.69 - $55.00
Q3 2017	416,189	$21,592	$46.11	$39.96 - $52.00
Q2 2017	539,762	$22,719	$39.30	$36.09 - $43.15
Q1 2017	537,665	$20,996	$35.55	$29.31 - $40.86