nLIGHT Corporate Overview

Summary Financial Results | Profitability and Cash Flow Full Year and Q1 2022 $ Millions; % of Revenue Net Income (Loss) Q1 2021 Q1 2022 2020 2021 ($6.1) ($8.6) ($20.9) ($29.7) 2.6 (1.6) 7.3 10.7 Non-GAAP Net Income (Loss)* Net Income (Loss) Per Share (diluted) (0.15) (0.20) (0.55) (0.70) Non-GAAP Net Income (Loss) Per Share (diluted)* 0.06 (0.04) 0.17 0.23 Adjusted EBITDA (non-GAAP)* 6.0 2.0 18.2 22.6 Cash Flow from (used in) Operations 4.1 (7.0) 13.0 (7.4) Capital Expenditures (3.2) (5.1) (23.4) (19.3) N LIGHT * See Appendix for reconciliation to most directly comparable GAAP measure 32 32

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