nLIGHT Corporate Overview

Operating Expenses | R&D and SG&A Operating Expenses (Non-GAAP) $ Millions; % of Revenue $20 40% $18 SG&A R&D $18.8 $18.1 $18.2 $17.6 35% OpEx as % of Sales $16 $15.1 $14.7 $14.3 30% $14.2 8.4 $14 7.8 8.1 $12.5 $13.0 $12.9 7.7 $12.8 $12.9 $12.1 25% $12 $11.4 $11.2 6.5 7.1 $10.4 6.4 7.3 $10 20% 6.7 7.0 7.2 6.9 6.2 6.0 $8 6.7 6.3 15% 6.1 $6 9.9 10.3 10.4 10.1 10% $4 7.9 8.2 8.1 6.9 5.8 5.9 5.8 6.0 6.1 6.5 $2 4.3 4.7 5.0 5% $0 0% Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 2018 2019 2020 2021 2022 NLIGHT Note: Excluding stock-based compensation expense, amortization of purchased intangibles and acquisition and integration-related costs. See Appendix for a reconciliation to GAAP operating expenses. 31

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