DIRTT ENVIRONMENTAL SOLUTION

Ticker: DRTTF CUSIP: 25490H106 Class: FGC

NEEDHAM INVESTMENT MANAGEMENT LLC's Holding History (CIK: 0001167212)

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

Q3 2020

Shares 71,500 Value ($000) $114 Avg Close $1.50 Range $1.00 - $2.38

Q2 2020

Shares 71,500 Value ($000) $87 Avg Close $1.20 Range $0.83 - $1.78

Q1 2020

Shares 285,000 Value ($000) $291 Avg Close $2.29 Range $0.71 - $3.48

Q4 2019

Shares 172,500 Value ($000) $572 Avg Close $3.80 Range $3.01 - $4.96

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2020	71,500	$114	$1.50	$1.00 - $2.38
Q2 2020	71,500	$87	$1.20	$0.83 - $1.78
Q1 2020	285,000	$291	$2.29	$0.71 - $3.48
Q4 2019	172,500	$572	$3.80	$3.01 - $4.96