CTKB

Cytek Biosciences, Inc.

Company with tickers: CTKB

CIK

1831915

CUSIP

23285D109

Shares Outstanding

129,142,587

13F Activity (30d)

92 filings 88 filers

Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 3, 4 and 5. Form 4 must be filed within two business days of the trade.

Date	Insider	Role	Type	Shares	Price	Value	After
2026-05-18	Yan Ming	Director, CHIEF TECHNOLOGY OFFICER	Tax	1,025	$3.55	$3,639	4,925,464
2026-05-18	Barnett Valerie	CHIEF LEGAL OFFICER	Convert	5,156	—	—	141,165
2026-05-18	Barnett Valerie	CHIEF LEGAL OFFICER	Tax	881	$3.55	$3,128	136,009
2026-05-18	Yan Ming	Director, CHIEF TECHNOLOGY OFFICER	Convert	4,108	—	—	4,926,489
2026-05-18	Yan Ming	Director, CHIEF TECHNOLOGY OFFICER	Convert	4,908	—	—	4,920,841
2026-05-18	McCombe William D.	Director, Chief Financial Officer	Tax	3,122	$3.55	$11,083	104,317
2026-05-18	Jiang Wenbin	Director, PRESIDENT AND CEO	Tax	5,032	$3.55	$17,864	5,454,071
2026-05-18	McCombe William D.	Director, Chief Financial Officer	Tax	3,839	$3.55	$13,628	111,177
2026-05-18	McCombe William D.	Director, Chief Financial Officer	Tax	2,268	$3.55	$8,051	98,739
2026-05-18	Jiang Wenbin	Director, PRESIDENT AND CEO	Tax	3,588	$3.55	$12,737	5,439,769
2026-05-18	Barnett Valerie	CHIEF LEGAL OFFICER	Convert	5,156	—	—	56,728
2026-05-18	Yan Ming	Director, CHIEF TECHNOLOGY OFFICER	Convert	9,480	—	—	4,934,944
2026-05-18	Barnett Valerie	CHIEF LEGAL OFFICER	Convert	2,454	—	—	136,890
2026-05-18	Busque Philippe	SVP, GLOBAL SALES AND SERVICES	Convert	1,473	—	—	16,209
2026-05-18	Barnett Valerie	CHIEF LEGAL OFFICER	Convert	7,250	—	—	146,565
2026-05-18	Busque Philippe	SVP, GLOBAL SALES AND SERVICES	Convert	1,024	—	—	36,711
2026-05-18	Barnett Valerie	CHIEF LEGAL OFFICER	Convert	9,435	—	—	217,018
2026-05-18	Yan Ming	Director, CHIEF TECHNOLOGY OFFICER	Convert	3,683	—	—	40,520
2026-05-18	Jiang Wenbin	Director, PRESIDENT AND CEO	Convert	14,733	—	—	5,443,357
2026-05-18	Yan Ming	Director, CHIEF TECHNOLOGY OFFICER	Tax	2,364	$3.55	$8,392	4,932,580
2026-05-18	Yan Ming	Director, CHIEF TECHNOLOGY OFFICER	Tax	1,224	$3.55	$4,345	4,919,617
2026-05-18	Holder Michael	Director	Convert	1,454	—	—	16,721
2026-05-18	McCombe William D.	Director, Chief Financial Officer	Convert	10,699	—	—	246,091
2026-05-18	Busque Philippe	SVP, GLOBAL SALES AND SERVICES	Convert	1,473	—	—	37,921
2026-05-18	Chin Richard	Director	Convert	6,107	—	—	50,897
2026-05-18	Jiang Wenbin	Director, PRESIDENT AND CEO	Convert	14,733	—	—	162,073
2026-05-18	Yan Ming	Director, CHIEF TECHNOLOGY OFFICER	Convert	4,108	—	—	69,850
2026-05-18	Busque Philippe	SVP, GLOBAL SALES AND SERVICES	Tax	378	$3.55	$1,342	37,543
2026-05-18	McCombe William D.	Director, Chief Financial Officer	Convert	10,699	—	—	115,016
2026-05-18	Busque Philippe	SVP, GLOBAL SALES AND SERVICES	Tax	1,424	$3.55	$5,055	43,466
2026-05-18	Barnett Valerie	CHIEF LEGAL OFFICER	Convert	7,250	—	—	123,262
2026-05-18	Yan Ming	Director, CHIEF TECHNOLOGY OFFICER	Tax	919	$3.55	$3,262	4,922,381
2026-05-18	Jiang Wenbin	Director, PRESIDENT AND CEO	Convert	19,334	—	—	5,459,103
2026-05-18	Busque Philippe	SVP, GLOBAL SALES AND SERVICES	Convert	2,416	—	—	41,089
2026-05-18	Yan Ming	Director, CHIEF TECHNOLOGY OFFICER	Convert	4,908	—	—	24,552
2026-05-18	Busque Philippe	SVP, GLOBAL SALES AND SERVICES	Convert	5,551	—	—	127,675
2026-05-18	Busque Philippe	SVP, GLOBAL SALES AND SERVICES	Tax	620	$3.55	$2,201	39,339
2026-05-18	Jiang Wenbin	Director, PRESIDENT AND CEO	Convert	38,141	—	—	5,492,212
2026-05-18	McCombe William D.	Director, Chief Financial Officer	Convert	6,320	—	—	50,569
2026-05-18	Barnett Valerie	CHIEF LEGAL OFFICER	Tax	3,386	$3.55	$12,020	150,012
2026-05-18	McCombe William D.	Director, Chief Financial Officer	Convert	8,700	—	—	147,913
2026-05-18	Busque Philippe	SVP, GLOBAL SALES AND SERVICES	Convert	5,551	—	—	44,890
2026-05-18	Busque Philippe	SVP, GLOBAL SALES AND SERVICES	Tax	263	$3.55	$934	36,448
2026-05-18	McCombe William D.	Director, Chief Financial Officer	Convert	6,320	—	—	101,007
2026-05-18	McCombe William D.	Director, Chief Financial Officer	Convert	8,700	—	—	107,439
2026-05-18	Jiang Wenbin	Director, PRESIDENT AND CEO	Convert	19,334	—	—	328,696
2026-05-18	Jiang Wenbin	Director, PRESIDENT AND CEO	Convert	7,854	—	—	5,430,537
2026-05-18	Jiang Wenbin	Director, PRESIDENT AND CEO	Convert	7,854	—	—	39,275
2026-05-18	Chin Richard	Director	Convert	6,107	—	—	22,392
2026-05-18	Barnett Valerie	CHIEF LEGAL OFFICER	Convert	9,435	—	—	153,398

Showing 1–50 of 954 transactions