DIRTT ENVIRONMENTAL SOLUTION

Ticker: DRTTF CUSIP: 25490H106 Class: FGC

GILDER GAGNON HOWE & CO LLC's Holding History (CIK: 0000902464)

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

Q4 2017
Shares 444,610 Value ($000) $2,392 Avg Close $4.83 Range $4.40 - $6.00
Q3 2017
Shares 1,592,093 Value ($000) $6,976 Avg Close $4.53 Range $4.00 - $6.00
Q2 2017
Shares 9,926,997 Value ($000) $52,360 Avg Close $4.85 Range $4.18 - $5.29
Q1 2017
Shares 9,980,713 Value ($000) $52,311 Avg Close $5.19 Range $4.55 - $5.73
Q4 2016
Shares 10,492,255 Value ($000) $49,056 Avg Close $4.13 Range $3.44 - $4.81
Q3 2016
Shares 10,641,075 Value ($000) $40,322 Avg Close $4.14 Range $3.65 - $4.54
Q2 2016
Shares 10,438,029 Value ($000) $43,241 Avg Close $4.08 Range $3.42 - $4.60
Q1 2015
Shares 10,504,358 Value ($000) $55,015 Avg Close $3.93 Range $2.95 - $5.42
Q4 2014
Shares 10,807,006 Value ($000) $33,536 Avg Close $3.12 Range $2.88 - $3.52
Q3 2014
Shares 10,659,807 Value ($000) $33,769 Avg Close $3.25 Range $2.99 - $3.48
Q2 2014
Shares 5,363,004 Value ($000) $17,800 Avg Close $2.94 Range $2.52 - $3.61