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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
2026-03-10 Barnett Valerie CHIEF LEGAL OFFICER Grant or award · Restricted Stock Units +226,453 226,453
2026-03-10 Barnett Valerie CHIEF LEGAL OFFICER Option exercise · Restricted Stock Units −4,908 14,734
2026-03-10 Barnett Valerie CHIEF LEGAL OFFICER Option exercise · Restricted Stock Units −10,313 61,884
2026-03-10 Barnett Valerie CHIEF LEGAL OFFICER Option exercise · Restricted Stock Units −14,501 130,512
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Option exercise +15,708 5,375,535
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Shares withheld for taxes −3,825 $4.23 $16K 5,371,710
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Option exercise +29,467 5,401,177
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Shares withheld for taxes −7,747 $4.23 $33K 5,393,430
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Option exercise +38,669 5,432,099
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Shares withheld for taxes −9,416 $4.23 $40K 5,422,683
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Grant or award · Employee Stock Option (right to buy) +485,545 485,545
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Grant or award · Restricted Stock Units +915,407 915,407
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Option exercise · Restricted Stock Units −15,708 47,129
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Option exercise · Restricted Stock Units −29,467 176,806
2026-03-10 Jiang Wenbin PRESIDENT AND CEO Option exercise · Restricted Stock Units −38,669 348,030
2026-03-10 Holder Michael Director Option exercise +2,908 15,267
2026-03-10 Holder Michael Director Option exercise · Restricted Stock Units −2,908 10,911
2026-03-10 Chin Richard Director Option exercise +6,107 16,285
2026-03-10 Chin Richard Director Option exercise · Restricted Stock Units −6,107 57,004
2026-02-18 Yan Ming CHIEF TECHNOLOGY OFFICER Option exercise +1,332 6,074,659

Page 9 of 49 · 980 trades