908 DEVICES INC

Ticker: MASS CUSIP: 65443P102 Class: Common Stock

Laurion Capital Management LP's Holding History (CIK: 0001390202)

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

Q1 2021

Shares 20,000 Value ($000) $970 Avg Close $57.14 Range $38.88 - $79.60

Q4 2020

Shares 20,000 Value ($000) $1,139 Avg Close $58.41 Range $43.25 - $74.00

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	20,000	$970	$57.14	$38.88 - $79.60
Q4 2020	20,000	$1,139	$58.41	$43.25 - $74.00