Forward-Looking Acquisitions Deck

5 Q3 and LTM FY21 results Q3 FY21 VS. Q3 FY20 Bookings decreased 16% Backlog increased 16% ■ Revenue up 23% Organic revenue(¹) up 5% ▪ GAAP net income down 34% Adjusted EBITDA up 16% Op cash of $23.2M ▪ FCF of $13.2M; 24% of adj. EBITDA ■ ■ Ⓒ Mercury Systems, Inc. LTM FY21 VS. LTM FY20 Bookings decreased 2% Backlog up 16% ■ Revenue up 18% Organic revenue ¹ up 10% (¹) ■ GAAP net income flat ■ Adjusted EBITDA up 17% ▪ Op cash of $98.8M ▪ FCF of $52.6M; 27% of adj. EBITDA ■ Notes (1) Organic revenue represents total company revenue excluding net revenue from acquisitions for the first four full quarters since the entities' acquisition date (which excludes any intercompany transactions). After the completion of four fiscal quarters, acquired businesses are treated as organic for current and comparable historical periods. mercury

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