Cytek Investor Day Presentation Deck

Note: Fiscal Quarter Non-GAAP Adjusted GP Reconciliation ($ in thousands) Non-GAAP Adjusted Gross Profit Reconciliation ($ in thousands) GAAP Gross Profit Adjustments Amortization of Acquisition-Related Intangible Assets Stock-Based Compensation Expense Non-GAAP gross profit Revenue !Non-GAAP gross profit % FY20A 51,710 0 232 51,942 92,839 56% FY21A 79,144 237 1,508 80,888 127,950 63% 1 1Q2020 8,375 0 29 8,404 17,988 47% 2Q2020 8,270 0 40 8,310 19,137 43% 3Q2020 15,615 0 38 15,653 25,095 62% 4Q2020 19,450 0 125 19,574 30,619 64% 1Q2021 14,487 0 112 14,599 24,272 60% 2Q2021 19,745 0 120 19,864 30,408 65% 3Q2021 21,276 0 559 21,835 34,376 64% 4Q2021 23,636 237 717 24,589 38,893 63% CYTEK TRANSCEND THE CONVENTIONAL 4Q2022 20,177 337 708 21,221 35,064 61% 122

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