Cytek IPO Presentation Deck

Historical Adjusted EBITDA ($ in millions) 2 YoY Quarterly Adj. EBITDA ($) / Adj. EBITDA Margin (%) 1,2 ($0.5) (3%) Q1'20A $1.8 7% Q1'21A Annual Adj. EBITDA ($) / Adj. EBITDA Margin (%) 1,2 $14.9 $3.3 6% FY2019A Note: Fiscal year ended December 31 and first quarter ended March 31 1. We define Adjusted EBITDA as net income (loss) adjusted for interest expense, interest income, other income (expense), net, provision for (benefit from) income taxes, depreciation and amortization, legal settlement expenses and stock-based compensation expenses. Adjusted EBITDA Margin is on a percentage of revenue basis Reconciliation of Non-GAAP figures are in the appendix 16% FY2020A CYTEK 32

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