Cytek IPO Presentation Deck

Historical Revenue and Gross Margin ($ in millions) Quarterly Revenue ($)1 / Gross Margin (%) $18.0 $1.9 47% $16.1 $19.1 $1.7 43% $17.4 $25.1 $1.9 Service Revenue 62% $23.2 $30.6 $2.0 Note: Fiscal year ended December 31 and first quarter ended March 31 1 Product revenue includes reagents 64% $28.6 $24.3 $1.6 60% $22.7 $30-$31 Q1'20A Q2¹20A Q3'20A Q4'20A Q1'21A Q2¹21E Product Revenue 64%-67% -Gross Margin Annual Revenue ($)1/ Gross Margin (%) $57.9 $7.7 50% $50.2 FY2019A Service Revenue YoY growth 60% Product Revenue $92.8 $7.6 56% $85.2 FY2020A -Gross Margin CYTEK | 31

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