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Cytek Biosciences, Inc. — Insider Transactions

Form 4 filings by directors, officers, and 10%+ shareholders

SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.

Overview All Filings Annual Quarterly Insiders
Insider Title Type Shares Price Value Owns After Date
Yan Ming CHIEF TECHNOLOGY OFFICER Option Exercise 5,525 6,070,012 Nov 18, 2025
Busque Philippe SVP, GLOBAL SALES AND SERVICES Option Exercise 1,536 24,952 Nov 18, 2025
Barnett Valerie CHIEF LEGAL OFFICER Option Exercise 10,875 119,138 Nov 18, 2025
McCombe William D. Chief Financial Officer Option Exercise 13,051 84,910 Nov 18, 2025
Jiang Wenbin PRESIDENT AND CEO Option Exercise 29,002 5,368,065 Nov 18, 2025
Holder Michael Option Exercise 2,181 12,359 Nov 18, 2025
Chin Richard Option Exercise 6,107 10,178 Nov 18, 2025
Yan Ming CHIEF TECHNOLOGY OFFICER Option Exercise 7,363 6,050,882 Aug 18, 2025
Busque Philippe SVP, GLOBAL SALES AND SERVICES Option Exercise 2,210 22,064 Aug 18, 2025
Barnett Valerie CHIEF LEGAL OFFICER Tax Withholding 1,434 $4.06 $5,822 87,150 Aug 18, 2025
Jiang Wenbin PRESIDENT AND CEO Option Exercise 11,781 5,278,628 Aug 18, 2025
McCombe William D. Chief Financial Officer Option Exercise 13,051 72,655 Aug 18, 2025
Holder Michael Option Exercise 2,181 10,178 Aug 18, 2025
Chin Richard Option Exercise 4,071 4,071 Aug 18, 2025
Imper Vera Option Exercise 15,706 15,706 Jun 5, 2025
HARDISON DON M Option Exercise 15,706 15,706 Jun 5, 2025
Ball Jack Option Exercise 15,706 42,705 Jun 5, 2025
NEFF DEBORAH J Option Exercise 15,706 15,706 Jun 5, 2025
McCombe William D. Chief Financial Officer Purchase 35,000 $2.78 $97,300 55,746 Jun 2, 2025
McCombe William D. Chief Financial Officer Option Exercise 8,700 24,135 May 19, 2025
Jiang Wenbin PRESIDENT AND CEO Option Exercise 14,733 5,250,697 May 19, 2025
Barnett Valerie CHIEF LEGAL OFFICER Option Exercise 2,016 75,388 May 19, 2025
Busque Philippe SVP, GLOBAL SALES AND SERVICES Tax Withholding 574 $2.69 $1,544 17,443 May 19, 2025
Yan Ming CHIEF TECHNOLOGY OFFICER Option Exercise 3,683 6,040,330 May 19, 2025
Holder Michael Option Exercise 1,454 7,997 May 19, 2025
Barnett Valerie CHIEF LEGAL OFFICER Tax Withholding 1,912 $4.36 $8,336 67,076 Mar 10, 2025
Busque Philippe SVP, GLOBAL SALES AND SERVICES Tax Withholding 799 $4.36 $3,484 14,121 Mar 10, 2025
Jiang Wenbin PRESIDENT AND CEO Tax Withholding 4,658 $4.36 $20,309 5,203,442 Mar 10, 2025
Yan Ming CHIEF TECHNOLOGY OFFICER Tax Withholding 2,911 $4.36 $12,692 6,026,621 Mar 10, 2025
Holder Michael Option Exercise 2,908 6,543 Mar 10, 2025
Barnett Valerie CHIEF LEGAL OFFICER Tax Withholding 786 $5.31 $4,174 64,080 Feb 18, 2025
Yan Ming CHIEF TECHNOLOGY OFFICER Option Exercise 1,981 6,020,303 Feb 18, 2025
Jiang Wenbin PRESIDENT AND CEO Tax Withholding 2,004 $5.31 $10,641 5,192,392 Feb 18, 2025
Busque Philippe SVP, GLOBAL SALES AND SERVICES Tax Withholding 599 $6.03 $3,612 11,522 Nov 18, 2024
Barnett Valerie CHIEF LEGAL OFFICER Option Exercise 3,681 58,953 Nov 18, 2024
Jiang Wenbin PRESIDENT AND CEO Tax Withholding 5,382 $6.03 $32,453 5,187,638 Nov 18, 2024
Poirson Allen SVP BUS. AND CORP. DEV. Tax Withholding 732 $6.03 $4,414 59,981 Nov 18, 2024
Yan Ming CHIEF TECHNOLOGY OFFICER Option Exercise 7,363 6,015,936 Nov 18, 2024
Holder Michael Option Exercise 2,181 3,635 Nov 18, 2024
Jiang Wenbin PRESIDENT AND CEO Gift 200,000 5,156,896 Sep 14, 2024
Holder Michael Option Exercise 1,454 1,454 Aug 19, 2024
Barnett Valerie CHIEF LEGAL OFFICER Option Exercise 7,735 56,743 Aug 19, 2024
Jiang Wenbin PRESIDENT AND CEO Option Exercise 11,781 5,343,047 Aug 19, 2024
Yan Ming CHIEF TECHNOLOGY OFFICER Option Exercise 7,363 6,004,693 Aug 19, 2024
Williams Paul Christopher CHIEF OPERATING OFFICER Tax Withholding 392 $5.53 $2,168 10,516 Aug 19, 2024
Poirson Allen SVP BUS. AND CORP. DEV. Tax Withholding 308 $5.53 $1,703 54,151 Aug 19, 2024
Busque Philippe SVP, GLOBAL SALES AND SERVICES Tax Withholding 861 $5.53 $4,761 10,585 Aug 19, 2024
Poirson Allen SVP BUS. AND CORP. DEV. Tax Withholding 651 $5.96 $3,880 52,905 May 20, 2024
Yan Ming CHIEF TECHNOLOGY OFFICER Tax Withholding 1,456 $5.96 $8,678 5,993,347 May 20, 2024
Williams Paul Christopher CHIEF OPERATING OFFICER Tax Withholding 2,296 $5.96 $13,684 9,902 May 20, 2024