X0306 4 2022-02-28 0 0001340476 DIRTT ENVIRONMENTAL SOLUTIONS LTD DRTT 0001494933 Lillibridge Todd W. 7303-30TH STREET SE CALGARY A0 T2C 1N6 ALBERTA, CANADA 1 1 0 0 See Remarks Common Shares 2022-02-28 4 P 0 179633 1.863 A 414333 D Common Shares 2022-03-01 4 P 0 70367 1.962 A 484700 D The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.8225 - $1.8998, inclusive. The reporting person undertakes to provide to DIRTT Environmental Solutions Ltd., any security holder of DIRTT Environmental Solutions Ltd., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range. The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.8494 - $2.00, inclusive. The reporting person undertakes to provide to DIRTT Environmental Solutions Ltd., any security holder of DIRTT Environmental Solutions Ltd., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range. Director and Interim President and CEO /s/ Nandini Somayaji, as attorney-in-fact for Todd Lillibridge 2022-03-02