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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
2025-11-18 McCombe William D. Chief Financial Officer Shares withheld for taxes −4,196 $5.53 $23K 80,714
2025-11-18 McCombe William D. Chief Financial Officer Option exercise · Restricted Stock Units −6,320 63,209
2025-11-18 McCombe William D. Chief Financial Officer Option exercise · Restricted Stock Units −13,051 174,014
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Option exercise +1,981 6,059,400
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Shares withheld for taxes −483 $5.53 $3K 6,058,917
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Option exercise +7,363 6,066,280
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Shares withheld for taxes −1,793 $5.53 $10K 6,064,487
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Option exercise +5,525 6,070,012
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Shares withheld for taxes −1,346 $5.53 $7K 6,068,666
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Option exercise +6,162 6,074,828
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Shares withheld for taxes −1,501 $5.53 $8K 6,073,327
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Option exercise · Restricted Stock Units −1,981 1,332
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Option exercise · Restricted Stock Units −7,363 39,277
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Option exercise · Restricted Stock Units −5,525 51,569
2025-11-18 Yan Ming CHIEF TECHNOLOGY OFFICER Option exercise · Restricted Stock Units −6,162 82,175
2025-11-18 Barnett Valerie CHIEF LEGAL OFFICER Option exercise +2,016 101,167
2025-11-18 Barnett Valerie CHIEF LEGAL OFFICER Shares withheld for taxes −649 $5.53 $4K 100,518
2025-11-18 Barnett Valerie CHIEF LEGAL OFFICER Option exercise +3,681 104,199
2025-11-18 Barnett Valerie CHIEF LEGAL OFFICER Shares withheld for taxes −1,184 $5.53 $7K 103,015
2025-11-18 Barnett Valerie CHIEF LEGAL OFFICER Option exercise +7,735 110,750

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