Investor Presentaiton

DIVERSIFIED AND BALANCED REVENUE MIX YEAR ENDED MARCH 2023 DEFENCE / CIVIL 69% DEFENCE / 31% CIVIL Vs 54% in FY20 Vs 46% in FY20 Other Large Jets Helicopters 6.1% 15.1% 10.6% 24.9% Fighters 27.0% BY END CUSTOMER LOCATION Rest of Europe Other countries Canada 7.7% 6.1% 12.6% Business Jets 8.1% 2.7% 2.7% Regional Jets Spain 5.4% Helicopters 2.8% Other Transport 6.8% United Kingdom 61.4% United States [ PROPRIETARY/BUILD-TO-PRINT LONG TERM AGREEMENT Build-to-print Other Build-to-print Tier 1 4.6% Proprietary and Life of Program Contracts 8.3% 50.2% 37.0% Build-to-print OEM FY20 Large jets = 27.4% ($168M) FY23 Large jets = 15.1% ($82M) Geographically diversified Strong proprietary content HÉROUX-DEVTEK INC. | INVESTOR PRESENTATION 6

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