Investor Presentaiton

FISCAL YEAR 2023 RESULTS % [ ] C ($M except per share data) Q1 Q2 Q3 Q4 Twelve months FY23 FY23 FY23 FY23 FY23 FY22 Sales 114.1 132.7 140.9 156.0 543.6 536.1 Gross profit % 11.0% 13.8% 14.1% 14.6% 13.5% 17.0% Operating income 2.6 8.6 5.1 9.9 26.2 44.8 Operating income (%) 2.3% 6.5% 3.6% 6.3% 4.8% 8.3% Adjusted EBITDA (1) 11.4 16.2 14.1 19.6 61.4 83.0 Adjusted EBITDA (1) (%) 10.0% 12.2% 10.0% 12.6% 11.3% 15.5% Strong recovery from the beginning of the fiscal year Bringing second-half of the year sales to $297 millions (1) Non-IFRS financial measure. Please refer to the "Non-IFRS financial measures" section at the end of this document for further details HÉROUX-DEVTEK INC. | INVESTOR PRESENTATION 9

View entire presentation