NLIGHT INC

Ticker: LASR CUSIP: 65487K100 Class: Common Stock

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q4 2019

Shares 32,825 Value ($000) $666 Avg Close $17.24 Range $12.60 - $21.13

Q2 2019

Shares 36,909 Value ($000) $709 Avg Close $21.97 Range $17.73 - $26.77

Q1 2019

Shares 14,986 Value ($000) $334 Avg Close $20.24 Range $16.58 - $23.21

Q4 2018

Shares 62,155 Value ($000) $1,105 Avg Close $18.94 Range $16.25 - $23.94

Q3 2018

Shares 36,808 Value ($000) $818 Avg Close $31.28 Range $21.82 - $43.63

Q2 2018

Shares 6,811 Value ($000) $225 Avg Close $33.61 Range $22.24 - $42.79

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	32,825	$666	$17.24	$12.60 - $21.13
Q2 2019	36,909	$709	$21.97	$17.73 - $26.77
Q1 2019	14,986	$334	$20.24	$16.58 - $23.21
Q4 2018	62,155	$1,105	$18.94	$16.25 - $23.94
Q3 2018	36,808	$818	$31.28	$21.82 - $43.63
Q2 2018	6,811	$225	$33.61	$22.24 - $42.79