Cytek Investor Day Presentation Deck

Cytek Operating Stats Non-GAAP Target Operating Model ($ in thousands) Gross Margin % S&M % R&D % G&A % Adj. EBITDA Margin % Gross Margin Shift in product mix with higher margin reagents becoming a greater share of total revenue Benefit from economies of scale as Company grows Leverage global manufacturing capabilities CYTEK TRANSCEND THE CONVENTIONAL 1Q2020 47% 19% 17% 14% -2% 2Q2020 43% 16% 15% 13% 2% S&M 3Q2020 62% 15% 13% 7% 28% Increased publications improve brand recognition and lowers customer acquisition costs Key Improvement Drivers Improved variable costs to retain and service customers at scale Reconciliation of Non-GAAP figures are in the appendix 4Q2020 64% 15% 14% 8% 27% 1Q2021 60% 17% 20% 16% 7% R&D 2Q2021 65% 18% 20% 13% 15% ▪ Lower cost to develop new products by leveraging existing FSP platform ■ Talent diversification in other lower cost locations Lower fixed costs to operate at scale 3Q2021 64% 18% 16% 15% 16% ■ 4Q2021 63% 20% 16% 16% 14% G&A 1Q2022 61% 18% 19% 18% 7% Improved operating costs through system automation ■ Talent diversification in other lower cost locations 113

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