CTKB · Cytek Biosciences Inc. Common Stock
View on chartInsiders & Stakes
| RA CAPITAL MANAGEMENT, L.P. Director | ▲ Buy | Open Market | 13,381,054 Shares held | 3/15/2022 | View profile |
| Wenbin Jiang President and CEO | ▼ Sell | Tax Withholding | 5,561,029 Shares held | 8/18/2026 | View profile |
| Ming Yan Chief Technology Officer | ▼ Sell | Tax Withholding | 4,821,870 Shares held | 8/18/2026 | View profile |
| Valerie Barnett General Counsel | ▼ Sell | Tax Withholding | 150,012 Shares held | 5/18/2026 | View profile |
| William D. McCombe Chief Financial Officer | ▼ Sell | Tax Withholding | 134,693 Shares held | 8/18/2026 | View profile |
| Jeanmonod Patrik Chief Financial Officer | ▼ Sell | Tax Withholding | 97,465 Shares held | 3/11/2024 | View profile |
| Jack Ball Director | ▲ Buy | Option Exercise | 86,678 Shares held | 6/10/2026 | View profile |
| Michael Holder | ▲ Buy | Option Exercise | 62,875 Shares held | 8/18/2026 | View profile |
| Poirson Allen SVP Marketing and Corp. Dev. | ▼ Sell | Tax Withholding | 59,981 Shares held | 11/18/2024 | View profile |
| Vera Imper | ▲ Buy | Option Exercise | 59,679 Shares held | 6/10/2026 | View profile |
| Deborah J. Neff | ▲ Buy | Option Exercise | 59,679 Shares held | 6/10/2026 | View profile |
| Philippe Busque SVP, GLOBAL SALES AND SERVICES | ▼ Sell | Tax Withholding | 43,466 Shares held | 5/18/2026 | View profile |
| Richard Chin | ▲ Buy | Option Exercise | 28,499 Shares held | 8/18/2026 | View profile |
| Williams Paul Christopher Chief Operating Officer | ▼ Sell | Tax Withholding | 16,473 Shares held | 8/19/2024 | View profile |
| HARDISON DON M | ▲ Buy | Option Exercise | 15,706 Shares held | 6/5/2025 | View profile |
| Garland Jonathan Todd Chief Commercial Officer | ▼ Sell | Tax Withholding | 8,763 Shares held | 8/18/2023 | View profile |
| Glenn P. Muir | ▲ Buy | Option Exercise | 3,086 Shares held | 8/18/2026 | View profile |
Transaction History
| Wenbin Jiang | ▲ Buy | Option Exercise | 11,781 | — | 8/18/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 2,869 | $13K | 8/18/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 22,100 | — | 8/18/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 5,382 | $25K | 8/18/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 29,002 | — | 8/18/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 7,062 | $33K | 8/18/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 57,212 | — | 8/18/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 20,956 | $98K | 8/18/2026 |
| William D. McCombe | ▲ Buy | Option Exercise | 6,320 | — | 8/18/2026 |
| William D. McCombe | ▼ Sell | Tax Withholding | 2,111 | $10K | 8/18/2026 |
| William D. McCombe | ▲ Buy | Option Exercise | 13,051 | — | 8/18/2026 |
| William D. McCombe | ▼ Sell | Tax Withholding | 4,392 | $21K | 8/18/2026 |
| William D. McCombe | ▲ Buy | Option Exercise | 16,049 | — | 8/18/2026 |
| William D. McCombe | ▼ Sell | Tax Withholding | 5,401 | $25K | 8/18/2026 |
| Glenn P. Muir | ▲ Buy | Option Exercise | 3,086 | — | 8/18/2026 |
| Michael Holder | ▲ Buy | Option Exercise | 2,181 | — | 8/18/2026 |
| Richard Chin | ▲ Buy | Option Exercise | 6,107 | — | 8/18/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 7,363 | — | 8/18/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,778 | $8K | 8/18/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 5,525 | — | 8/18/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,346 | $6K | 8/18/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 6,162 | — | 8/18/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,501 | $7K | 8/18/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 14,220 | — | 8/18/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 3,463 | $16K | 8/18/2026 |
| Ming Yan | ▼ Sell | Gift | 135,892 | $0 | 6/12/2026 |
| Jack Ball | ▲ Buy | Option Exercise | 43,973 | — | 6/10/2026 |
| Vera Imper | ▲ Buy | Option Exercise | 43,973 | — | 6/10/2026 |
| Deborah J. Neff | ▲ Buy | Option Exercise | 43,973 | — | 6/10/2026 |
| Michael Holder | ▲ Buy | Option Exercise | 43,973 | — | 6/10/2026 |
| Michael Holder | ▲ Buy | Option Exercise | 1,454 | — | 5/18/2026 |
| Richard Chin | ▲ Buy | Option Exercise | 6,107 | — | 5/18/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 4,908 | — | 5/18/2026 |
| Philippe Busque | ▲ Buy | Option Exercise | 1,473 | — | 5/18/2026 |
| Philippe Busque | ▼ Sell | Tax Withholding | 378 | $1K | 5/18/2026 |
| Philippe Busque | ▲ Buy | Option Exercise | 2,416 | — | 5/18/2026 |
| Philippe Busque | ▲ Buy | Option Exercise | 5,551 | — | 5/18/2026 |
| Philippe Busque | ▼ Sell | Tax Withholding | 1,424 | $5K | 5/18/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 1,913 | $7K | 5/18/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 14,733 | — | 5/18/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 3,588 | $13K | 5/18/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 19,334 | — | 5/18/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 5,032 | $18K | 5/18/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 38,141 | — | 5/18/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 15,009 | $53K | 5/18/2026 |
| William D. McCombe | ▲ Buy | Option Exercise | 6,320 | — | 5/18/2026 |
| William D. McCombe | ▼ Sell | Tax Withholding | 2,268 | $8K | 5/18/2026 |
| William D. McCombe | ▲ Buy | Option Exercise | 8,700 | — | 5/18/2026 |
| William D. McCombe | ▼ Sell | Tax Withholding | 3,122 | $11K | 5/18/2026 |
| William D. McCombe | ▲ Buy | Option Exercise | 10,699 | — | 5/18/2026 |
| William D. McCombe | ▼ Sell | Tax Withholding | 3,839 | $14K | 5/18/2026 |
| Valerie Barnett | ▲ Buy | Option Exercise | 2,454 | — | 5/18/2026 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 881 | $3K | 5/18/2026 |
| Valerie Barnett | ▲ Buy | Option Exercise | 5,156 | — | 5/18/2026 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 1,850 | $7K | 5/18/2026 |
| Valerie Barnett | ▲ Buy | Option Exercise | 7,250 | — | 5/18/2026 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 2,602 | $9K | 5/18/2026 |
| Valerie Barnett | ▲ Buy | Option Exercise | 9,435 | — | 5/18/2026 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 3,386 | $12K | 5/18/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 7,854 | — | 5/18/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,224 | $4K | 5/18/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 3,683 | — | 5/18/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 919 | $3K | 5/18/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 4,108 | — | 5/18/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,025 | $4K | 5/18/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 9,480 | — | 5/18/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 2,364 | $8K | 5/18/2026 |
| Philippe Busque | ▲ Buy | Option Exercise | 1,024 | — | 5/18/2026 |
| Philippe Busque | ▼ Sell | Tax Withholding | 263 | $934 | 5/18/2026 |
| Philippe Busque | ▼ Sell | Tax Withholding | 620 | $2K | 5/18/2026 |
| Ming Yan | ▼ Sell | Gift | 1,176,000 | $0 | 3/13/2026 |
| Richard Chin | ▲ Buy | Option Exercise | 6,107 | — | 3/10/2026 |
| Valerie Barnett | ▲ Buy | Option Exercise | 4,908 | — | 3/10/2026 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 1,761 | $7K | 3/10/2026 |
| Valerie Barnett | ▲ Buy | Option Exercise | 10,313 | — | 3/10/2026 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 4,247 | $18K | 3/10/2026 |
| Valerie Barnett | ▲ Buy | Option Exercise | 14,501 | — | 3/10/2026 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 5,740 | $24K | 3/10/2026 |
| Philippe Busque | ▲ Buy | Option Exercise | 2,049 | — | 3/10/2026 |
| Philippe Busque | ▼ Sell | Tax Withholding | 635 | $3K | 3/10/2026 |
| Philippe Busque | ▲ Buy | Option Exercise | 2,946 | — | 3/10/2026 |
| Philippe Busque | ▼ Sell | Tax Withholding | 912 | $4K | 3/10/2026 |
| Philippe Busque | ▲ Buy | Option Exercise | 4,833 | — | 3/10/2026 |
| Philippe Busque | ▼ Sell | Tax Withholding | 1,496 | $6K | 3/10/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 15,708 | — | 3/10/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 3,825 | $16K | 3/10/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 29,467 | — | 3/10/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 7,747 | $33K | 3/10/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 38,669 | — | 3/10/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 9,416 | $40K | 3/10/2026 |
| William D. McCombe | ▲ Buy | Option Exercise | 6,320 | — | 3/10/2026 |
| William D. McCombe | ▼ Sell | Tax Withholding | 2,603 | $11K | 3/10/2026 |
| William D. McCombe | ▲ Buy | Option Exercise | 17,401 | — | 3/10/2026 |
| William D. McCombe | ▼ Sell | Tax Withholding | 7,145 | $30K | 3/10/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 9,817 | — | 3/10/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 3,047 | $13K | 3/10/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 7,366 | — | 3/10/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 2,287 | $10K | 3/10/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 8,217 | — | 3/10/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 2,397 | $10K | 3/10/2026 |
| Michael Holder | ▲ Buy | Option Exercise | 2,908 | — | 3/10/2026 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 4,514 | — | 2/18/2026 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 1,339 | $6K | 2/18/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 1,332 | — | 2/18/2026 |
| Ming Yan | ▼ Sell | Tax Withholding | 395 | $2K | 2/18/2026 |
| Valerie Barnett | ▲ Buy | Option Exercise | 1,346 | — | 2/18/2026 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 525 | $2K | 2/18/2026 |
| Ming Yan | ▲ Buy | Option Exercise | 1,981 | — | 11/18/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 483 | $3K | 11/18/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 7,363 | — | 11/18/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,793 | $10K | 11/18/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 5,525 | — | 11/18/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,346 | $7K | 11/18/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 6,162 | — | 11/18/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,501 | $8K | 11/18/2025 |
| Philippe Busque | ▲ Buy | Option Exercise | 1,536 | — | 11/18/2025 |
| Philippe Busque | ▼ Sell | Tax Withholding | 393 | $2K | 11/18/2025 |
| Philippe Busque | ▲ Buy | Option Exercise | 2,210 | — | 11/18/2025 |
| Philippe Busque | ▼ Sell | Tax Withholding | 565 | $3K | 11/18/2025 |
| Philippe Busque | ▲ Buy | Option Exercise | 3,625 | — | 11/18/2025 |
| Philippe Busque | ▼ Sell | Tax Withholding | 927 | $5K | 11/18/2025 |
| Valerie Barnett | ▲ Buy | Option Exercise | 2,016 | — | 11/18/2025 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 649 | $4K | 11/18/2025 |
| Valerie Barnett | ▲ Buy | Option Exercise | 3,681 | — | 11/18/2025 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 1,184 | $7K | 11/18/2025 |
| Valerie Barnett | ▲ Buy | Option Exercise | 7,735 | — | 11/18/2025 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 2,487 | $14K | 11/18/2025 |
| Valerie Barnett | ▲ Buy | Option Exercise | 10,875 | — | 11/18/2025 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 3,497 | $19K | 11/18/2025 |
| William D. McCombe | ▲ Buy | Option Exercise | 6,320 | — | 11/18/2025 |
| William D. McCombe | ▼ Sell | Tax Withholding | 2,032 | $11K | 11/18/2025 |
| William D. McCombe | ▲ Buy | Option Exercise | 13,051 | — | 11/18/2025 |
| William D. McCombe | ▼ Sell | Tax Withholding | 4,196 | $23K | 11/18/2025 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 6,758 | — | 11/18/2025 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 2,660 | $15K | 11/18/2025 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 11,781 | — | 11/18/2025 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 4,636 | $26K | 11/18/2025 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 22,100 | — | 11/18/2025 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 8,697 | $48K | 11/18/2025 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 29,002 | — | 11/18/2025 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 11,413 | $63K | 11/18/2025 |
| Michael Holder | ▲ Buy | Option Exercise | 2,181 | — | 11/18/2025 |
| Richard Chin | ▲ Buy | Option Exercise | 6,107 | — | 11/18/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 1,981 | — | 8/18/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 588 | $2K | 8/18/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 7,363 | — | 8/18/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 2,184 | $9K | 8/18/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 5,525 | — | 8/18/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,498 | $6K | 8/18/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 6,162 | — | 8/18/2025 |
| Philippe Busque | ▼ Sell | Tax Withholding | 599 | $2K | 8/18/2025 |
| Philippe Busque | ▲ Buy | Option Exercise | 2,210 | — | 8/18/2025 |
| Philippe Busque | ▼ Sell | Tax Withholding | 861 | $3K | 8/18/2025 |
| Philippe Busque | ▲ Buy | Option Exercise | 3,625 | — | 8/18/2025 |
| Philippe Busque | ▼ Sell | Tax Withholding | 1,412 | $6K | 8/18/2025 |
| Valerie Barnett | ▲ Buy | Option Exercise | 2,016 | — | 8/18/2025 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 786 | $3K | 8/18/2025 |
| Valerie Barnett | ▲ Buy | Option Exercise | 3,681 | — | 8/18/2025 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 1,434 | $6K | 8/18/2025 |
| Valerie Barnett | ▲ Buy | Option Exercise | 7,735 | — | 8/18/2025 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 3,000 | $12K | 8/18/2025 |
| Valerie Barnett | ▲ Buy | Option Exercise | 10,875 | — | 8/18/2025 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 3,609 | $15K | 8/18/2025 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 6,758 | — | 8/18/2025 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 1,646 | $7K | 8/18/2025 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 11,781 | — | 8/18/2025 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 2,869 | $12K | 8/18/2025 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 22,100 | — | 8/18/2025 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 5,382 | $22K | 8/18/2025 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 29,002 | — | 8/18/2025 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 7,062 | $29K | 8/18/2025 |
| William D. McCombe | ▲ Buy | Option Exercise | 6,320 | — | 8/18/2025 |
| William D. McCombe | ▲ Buy | Option Exercise | 13,051 | — | 8/18/2025 |
| William D. McCombe | ▼ Sell | Tax Withholding | 5,084 | $21K | 8/18/2025 |
| Michael Holder | ▲ Buy | Option Exercise | 2,181 | $0 | 8/18/2025 |
| Richard Chin | ▲ Buy | Option Exercise | 4,071 | — | 8/18/2025 |
| William D. McCombe | ▼ Sell | Tax Withholding | 2,462 | $10K | 8/18/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,468 | $6K | 8/18/2025 |
| Philippe Busque | ▲ Buy | Option Exercise | 1,536 | — | 8/18/2025 |
| Vera Imper | ▲ Buy | Option Exercise | 15,706 | — | 6/5/2025 |
| HARDISON DON M | ▲ Buy | Option Exercise | 15,706 | — | 6/5/2025 |
| Jack Ball | ▲ Buy | Option Exercise | 15,706 | — | 6/5/2025 |
| Deborah J. Neff | ▲ Buy | Option Exercise | 15,706 | — | 6/5/2025 |
| William D. McCombe | ▲ Buy | Open Market | 35,000 | $97K | 6/2/2025 |
| Wenbin Jiang | ▼ Sell | Tax Withholding | 1,913 | $5K | 5/19/2025 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 14,733 | — | 5/19/2025 |
| Philippe Busque | ▼ Sell | Tax Withholding | 942 | $3K | 5/19/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 1,981 | — | 5/19/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 588 | $2K | 5/19/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 4,908 | — | 5/19/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,456 | $4K | 5/19/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 3,683 | — | 5/19/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,093 | $3K | 5/19/2025 |
| Ming Yan | ▲ Buy | Option Exercise | 4,108 | — | 5/19/2025 |
| Ming Yan | ▼ Sell | Tax Withholding | 1,219 | $3K | 5/19/2025 |
| Michael Holder | ▲ Buy | Option Exercise | 1,454 | — | 5/19/2025 |
| Wenbin Jiang | ▲ Buy | Option Exercise | 7,854 | — | 5/19/2025 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 2,009 | $5K | 5/19/2025 |
| Valerie Barnett | ▲ Buy | Option Exercise | 7,250 | — | 5/19/2025 |
| Valerie Barnett | ▼ Sell | Tax Withholding | 2,824 | $8K | 5/19/2025 |