2020 Annual Meeting of Shareholders

11 FY23 annual guidance In $ millions, except percentage and per share data Revenue GAAP Net Income (Loss) GAAP Earnings (Loss) Per Share Weighted-average diluted shares outstanding Adjusted EPS (4) Adj. EBITDA (4) % of revenue © Mercury Systems, Inc. FY22(¹) $988.2 $11.3 $0.20 55.9 $2.19 $200.5 20.3% Does not contain Technical Data. //Mercury Proprietary/No Tech Data// FY23(2)(5) $990.0 - $1,010.0 ($19.0) - ($11.1) ($0.34) - ($0.20) 56.8 $1.36 - $1.50 $160.0 - $170.0 16.2% 16.8% CHANGE 0% -2% N.A. N.A. (38%) - (32%) (20%) - (15%) Notes (1) FY22 figures are as reported in the Company's earnings release dated August 2, 2022. (2) The guidance included herein is from the Company's earnings release dated May 2, 2023. (3) The effective tax rate in the guidance included herein excludes discrete items. (4) Non-GAAP, see reconciliation table. (5) All references in this presentation to the full fiscal 2022 are to the 52-week period ended July 1, 2022, and to the full fiscal 2023 are to the 52-week period ending June 30, 2023. mercury

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