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CIK 0001831915 · Accelerated filer

Cytek Biosciences, Inc.

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Ticker
CTKB
Exchange
Nasdaq
Industry
Laboratory Analytical Instruments
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
472547526
Phone
(877) 922-9835
Business address
47215 LAKEVIEW BOULEVARD, FREMONT, CA, 94538
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$0
in 0 filings

Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Date Insider Transaction Shares Price Value Owned after
2026-05-18 Chin Richard Director Option exercise +6,107 22,392
2026-05-18 Chin Richard Director Option exercise · Restricted Stock Units −6,107 50,897
2026-03-13 Yan Ming CHIEF TECHNOLOGY OFFICER Gift −1,176,000 4,915,933
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Option exercise +2,049 30,951
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Shares withheld for taxes −635 $4.23 $3K 30,316
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Option exercise +2,946 33,262
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Shares withheld for taxes −912 $4.23 $4K 32,350
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Option exercise +4,833 37,183
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Shares withheld for taxes −1,496 $4.23 $6K 35,687
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Grant or award · Employee Stock Option (right to buy) +70,665 70,665
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Grant or award · Restricted Stock Units +133,226 133,226
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Option exercise · Restricted Stock Units −2,049 6,665
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Option exercise · Restricted Stock Units −2,946 17,682
2026-03-10 Busque Philippe SVP, GLOBAL SALES AND SERVICES Option exercise · Restricted Stock Units −4,833 43,505
2026-03-10 McCombe William D. Chief Financial Officer Option exercise +6,320 87,034
2026-03-10 McCombe William D. Chief Financial Officer Shares withheld for taxes −2,603 $4.23 $11K 84,431
2026-03-10 McCombe William D. Chief Financial Officer Option exercise +17,401 101,832
2026-03-10 McCombe William D. Chief Financial Officer Shares withheld for taxes −7,145 $4.23 $30K 94,687
2026-03-10 McCombe William D. Chief Financial Officer Grant or award · Employee Stock Option (right to buy) +136,205 136,205
2026-03-10 McCombe William D. Chief Financial Officer Grant or award · Restricted Stock Units +256,790 256,790

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