MERCURY SYS INC

Ticker: MRCY CUSIP: 589378108 Class: Common Stock

True North Advisors, LLC's Holding History (CIK: 0001634556)

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

Q2 2020

Shares 8,000 Value ($000) $629 Avg Close $81.87 Range $65.87 - $96.29

Q1 2020

Shares 8,000 Value ($000) $570 Avg Close $75.77 Range $52.24 - $87.57

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2020	8,000	$629	$81.87	$65.87 - $96.29
Q1 2020	8,000	$570	$75.77	$52.24 - $87.57