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.
| 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 |