CTKB Cytek Biosciences, Inc.
Nasdaq · SEC CIK 1831915 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $0 0 sales by 0 insiders
- Filings on record
- 272 since 2021-07-26, latest 2026-08-20 16:35
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| Busque Philippe | SVP, Gbl SALES AND SERVICES | — | — |
| Imper Vera | Dir | — | — |
| McCombe William D. | CFO | — | — |
| Yan Ming | CTO, Dir | — | — |
| Barnett Valerie | CLO | — | — |
| Ball Jack | Dir | — | — |
| Jiang Wenbin | Pres AND CEO, Dir | — | — |
| Holder Michael | Dir | — | — |
| Chin Richard | Dir | — | — |
| NEFF DEBORAH J | Dir | — | — |
Transactions 338
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-08-20 16:35 | 2026-08-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | M - OptEx | — | +120.1K | 5.58M | +2% | — |
| DM | 2026-08-20 16:35 | 2026-08-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | F - Tax | $4.67 | -36.3K | 5.56M | -0.6% | -$169.4K |
| DM | 2026-08-20 16:34 | 2026-08-18 | CTKB | McCombe William D. | CFO | M - OptEx | — | +35.4K | 140.1K | +34% | — |
| DM | 2026-08-20 16:34 | 2026-08-18 | CTKB | McCombe William D. | CFO | F - Tax | $4.67 | -11.9K | 134.7K | -8% | -$55.6K |
| D | 2026-08-20 16:31 | 2026-08-18 | CTKB | MUIR GLENN P | Dir | M - OptEx | — | +3,086 | 3,086 | New | — |
| D | 2026-08-20 16:28 | 2026-08-18 | CTKB | Holder Michael | Dir | M - OptEx | — | +2,181 | 62.9K | +4% | — |
| D | 2026-08-20 16:27 | 2026-08-18 | CTKB | Chin Richard | Dir | M - OptEx | — | +6,107 | 28.5K | +27% | — |
| DM | 2026-08-20 16:22 | 2026-08-18 | CTKB | Yan Ming | CTO, Dir | M - OptEx | — | +33.3K | 4.83M | +0.7% | — |
| DM | 2026-08-20 16:22 | 2026-08-18 | CTKB | Yan Ming | CTO, Dir | F - Tax | $4.67 | -8,088 | 4.82M | -0.2% | -$37.8K |
| 2026-06-16 16:59 | 2026-06-12 | CTKB | Yan Ming | CTO, Dir | G - Gift | $0.00 | -135.9K | 4.80M | -3% | $0 | |
| D | 2026-06-12 19:34 | 2026-06-10 | CTKB | Ball Jack | Dir | M - OptEx | — | +44.0K | 86.7K | +103% | — |
| D | 2026-06-12 19:25 | 2026-06-10 | CTKB | Imper Vera | Dir | M - OptEx | — | +44.0K | 59.7K | +280% | — |
| D | 2026-06-12 19:23 | 2026-06-10 | CTKB | NEFF DEBORAH J | Dir | M - OptEx | — | +44.0K | 59.7K | +280% | — |
| D | 2026-06-12 19:22 | 2026-06-10 | CTKB | Holder Michael | Dir | M - OptEx | — | +44.0K | 60.7K | +263% | — |
| D | 2026-05-20 18:01 | 2026-05-18 | CTKB | Holder Michael | Dir | M - OptEx | — | +1,454 | 16.7K | +10% | — |
| D | 2026-05-20 17:59 | 2026-05-18 | CTKB | Chin Richard | Dir | M - OptEx | — | +6,107 | 22.4K | +38% | — |
| DM | 2026-05-20 17:56 | 2026-05-18 | CTKB | Yan Ming | CTO, Dir | M - OptEx | — | +22.2K | 4.93M | +0.5% | — |
| DM | 2026-05-20 17:56 | 2026-05-18 | CTKB | Yan Ming | CTO, Dir | F - Tax | $3.55 | -5,532 | 4.93M | -0.1% | -$19.6K |
| DM | 2026-05-20 17:53 | 2026-05-18 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | M - OptEx | — | +10.5K | 44.9K | +30% | — |
| DM | 2026-05-20 17:53 | 2026-05-18 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | F - Tax | $3.55 | -2,685 | 43.5K | -6% | -$9,532 |
| DM | 2026-05-20 17:50 | 2026-05-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | M - OptEx | — | +80.1K | 5.49M | +1% | — |
| DM | 2026-05-20 17:50 | 2026-05-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | F - Tax | $3.55 | -25.5K | 5.48M | -0.5% | -$90.7K |
| DM | 2026-05-20 17:48 | 2026-05-18 | CTKB | McCombe William D. | CFO | M - OptEx | — | +25.7K | 115.0K | +29% | — |
| DM | 2026-05-20 17:48 | 2026-05-18 | CTKB | McCombe William D. | CFO | F - Tax | $3.55 | -9,229 | 111.2K | -8% | -$32.8K |
| DM | 2026-05-20 17:45 | 2026-05-18 | CTKB | Barnett Valerie | CLO | M - OptEx | — | +24.3K | 153.4K | +19% | — |
| DM | 2026-05-20 17:45 | 2026-05-18 | CTKB | Barnett Valerie | CLO | F - Tax | $3.55 | -8,719 | 150.0K | -5% | -$31.0K |
| 2026-03-13 | 2026-03-13 | CTKB | Yan Ming | CTO, Dir | G - Gift | $0.00 | -1.18M | 4.92M | -19% | $0 | |
| D | 2026-03-12 | 2026-03-10 | CTKB | Chin Richard | Dir | M - OptEx | — | +6,107 | 16.3K | +60% | — |
| DM | 2026-03-12 | 2026-03-10 | CTKB | Barnett Valerie | CLO | M - OptEx | — | +29.7K | 129.9K | +30% | — |
| DM | 2026-03-12 | 2026-03-10 | CTKB | Barnett Valerie | CLO | F - Tax | $4.23 | -11.7K | 125.7K | -9% | -$49.7K |
| DM | 2026-03-12 | 2026-03-10 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | M - OptEx | — | +83.8K | 5.40M | +2% | — |
| DM | 2026-03-12 | 2026-03-10 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | F - Tax | $4.23 | -21.0K | 5.39M | -0.4% | -$88.8K |
| DM | 2026-03-12 | 2026-03-10 | CTKB | Yan Ming | CTO, Dir | F - Tax | $4.23 | -7,731 | 6.09M | -0.1% | -$32.7K |
| DM | 2026-03-12 | 2026-03-10 | CTKB | Yan Ming | CTO, Dir | M - OptEx | — | +25.4K | 6.09M | +0.4% | — |
| DM | 2026-03-12 | 2026-03-10 | CTKB | McCombe William D. | CFO | M - OptEx | — | +23.7K | 87.0K | +37% | — |
| DM | 2026-03-12 | 2026-03-10 | CTKB | McCombe William D. | CFO | F - Tax | $4.23 | -9,748 | 94.7K | -9% | -$41.2K |
| DM | 2026-03-12 | 2026-03-10 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | M - OptEx | — | +9,828 | 37.2K | +36% | — |
| DM | 2026-03-12 | 2026-03-10 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | F - Tax | $4.23 | -3,043 | 35.7K | -8% | -$12.9K |
| D | 2026-03-12 | 2026-03-10 | CTKB | Holder Michael | Dir | M - OptEx | — | +2,908 | 15.3K | +24% | — |
| D | 2026-02-20 | 2026-02-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | M - OptEx | — | +4,514 | 5.36M | +0.1% | — |
| D | 2026-02-20 | 2026-02-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | F - Tax | $4.20 | -1,339 | 5.36M | -0.0% | -$5,624 |
| D | 2026-02-20 | 2026-02-18 | CTKB | Yan Ming | CTO, Dir | M - OptEx | — | +1,332 | 6.07M | +0.0% | — |
| D | 2026-02-20 | 2026-02-18 | CTKB | Yan Ming | CTO, Dir | F - Tax | $4.20 | -395 | 6.07M | -0.0% | -$1,659 |
| D | 2026-02-20 | 2026-02-18 | CTKB | Barnett Valerie | CLO | F - Tax | $4.20 | -525 | 116.5K | -0.4% | -$2,205 |
| D | 2026-02-20 | 2026-02-18 | CTKB | Barnett Valerie | CLO | M - OptEx | — | +1,346 | 117.0K | +1% | — |
| DM | 2025-11-20 | 2025-11-18 | CTKB | Barnett Valerie | CLO | F - Tax | $5.53 | -7,817 | 108.3K | -7% | -$43.2K |
| DM | 2025-11-20 | 2025-11-18 | CTKB | Barnett Valerie | CLO | M - OptEx | — | +24.3K | 119.1K | +26% | — |
| DM | 2025-11-20 | 2025-11-18 | CTKB | Yan Ming | CTO, Dir | F - Tax | $5.53 | -5,123 | 6.06M | -0.1% | -$28.3K |
| DM | 2025-11-20 | 2025-11-18 | CTKB | Yan Ming | CTO, Dir | M - OptEx | — | +21.0K | 6.07M | +0.3% | — |
| DM | 2025-11-20 | 2025-11-18 | CTKB | McCombe William D. | CFO | M - OptEx | — | +19.4K | 84.9K | +30% | — |
| DM | 2025-11-20 | 2025-11-18 | CTKB | McCombe William D. | CFO | F - Tax | $5.53 | -6,228 | 80.7K | -7% | -$34.4K |
| D | 2025-11-20 | 2025-11-18 | CTKB | Holder Michael | Dir | M - OptEx | — | +2,181 | 12.4K | +21% | — |
| DM | 2025-11-20 | 2025-11-18 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | F - Tax | $5.53 | -1,885 | 24.6K | -7% | -$10.4K |
| DM | 2025-11-20 | 2025-11-18 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | M - OptEx | — | +7,371 | 25.0K | +42% | — |
| D | 2025-11-20 | 2025-11-18 | CTKB | Chin Richard | Dir | M - OptEx | — | +6,107 | 10.2K | +150% | — |
| DM | 2025-11-20 | 2025-11-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | M - OptEx | — | +69.6K | 5.37M | +1% | — |
| DM | 2025-11-20 | 2025-11-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | F - Tax | $5.53 | -27.4K | 5.34M | -0.5% | -$151.6K |
| D | 2025-08-20 | 2025-08-18 | CTKB | Chin Richard | Dir | M - OptEx | — | +4,071 | 4,071 | New | — |
| D | 2025-08-20 | 2025-08-18 | CTKB | Holder Michael | Dir | M - OptEx | $0.00 | +2,181 | 10.2K | +27% | $0 |
| DM | 2025-08-20 | 2025-08-18 | CTKB | Yan Ming | CTO, Dir | F - Tax | $4.06 | -5,738 | 6.05M | -0.1% | -$23.3K |
| DM | 2025-08-20 | 2025-08-18 | CTKB | Yan Ming | CTO, Dir | M - OptEx | — | +21.0K | 6.05M | +0.3% | — |
| DM | 2025-08-20 | 2025-08-18 | CTKB | Barnett Valerie | CLO | M - OptEx | — | +24.3K | 102.8K | +31% | — |
| DM | 2025-08-20 | 2025-08-18 | CTKB | Barnett Valerie | CLO | F - Tax | $4.06 | -8,829 | 87.2K | -9% | -$35.8K |
| DM | 2025-08-20 | 2025-08-18 | CTKB | McCombe William D. | CFO | F - Tax | $4.06 | -7,546 | 67.6K | -10% | -$30.6K |
| DM | 2025-08-20 | 2025-08-18 | CTKB | McCombe William D. | CFO | M - OptEx | — | +19.4K | 72.7K | +36% | — |
| DM | 2025-08-20 | 2025-08-18 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | M - OptEx | — | +7,371 | 22.1K | +50% | — |
| DM | 2025-08-20 | 2025-08-18 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | F - Tax | $4.06 | -2,872 | 21.2K | -12% | -$11.7K |
| DM | 2025-08-20 | 2025-08-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | F - Tax | $4.06 | -17.0K | 5.27M | -0.3% | -$68.9K |
| DM | 2025-08-20 | 2025-08-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | M - OptEx | — | +69.6K | 5.28M | +1% | — |
| D | 2025-06-09 | 2025-06-05 | CTKB | NEFF DEBORAH J | Dir | M - OptEx | — | +15.7K | 15.7K | New | — |
| D | 2025-06-09 | 2025-06-05 | CTKB | Imper Vera | Dir | M - OptEx | — | +15.7K | 15.7K | New | — |
| D | 2025-06-09 | 2025-06-05 | CTKB | HARDISON DON M | Dir | M - OptEx | — | +15.7K | 15.7K | New | — |
| D | 2025-06-09 | 2025-06-05 | CTKB | Ball Jack | Dir | M - OptEx | — | +15.7K | 42.7K | +58% | — |
| 2025-06-03 | 2025-06-02 | CTKB | McCombe William D. | CFO | P - Purchase | $2.78 | +35.0K | 55.7K | +169% | +$97.3K | |
| DM | 2025-05-21 | 2025-05-19 | CTKB | McCombe William D. | CFO | F - Tax | $2.69 | -13.2K | 15.4K | -46% | -$35.6K |
| DM | 2025-05-21 | 2025-05-19 | CTKB | McCombe William D. | CFO | M - OptEx | — | +34.0K | 24.1K | New | — |
| DM | 2025-05-21 | 2025-05-19 | CTKB | Yan Ming | CTO, Dir | F - Tax | $2.69 | -4,356 | 6.04M | -0.1% | -$11.7K |
| DM | 2025-05-21 | 2025-05-19 | CTKB | Yan Ming | CTO, Dir | M - OptEx | — | +14.7K | 6.04M | +0.2% | — |
| D | 2025-05-21 | 2025-05-19 | CTKB | Holder Michael | Dir | M - OptEx | — | +1,454 | 7,997 | +22% | — |
| DM | 2025-05-21 | 2025-05-19 | CTKB | Barnett Valerie | CLO | F - Tax | $2.69 | -6,575 | 76.1K | -8% | -$17.7K |
| DM | 2025-05-21 | 2025-05-19 | CTKB | Barnett Valerie | CLO | M - OptEx | — | +16.9K | 75.4K | +29% | — |
| DM | 2025-05-21 | 2025-05-19 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | M - OptEx | — | +48.7K | 5.25M | +0.9% | — |
| DM | 2025-05-21 | 2025-05-19 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | F - Tax | $2.69 | -11.9K | 5.23M | -0.2% | -$31.9K |
| DM | 2025-05-21 | 2025-05-19 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | F - Tax | $2.69 | -1,915 | 17.4K | -10% | -$5,151 |
| DM | 2025-05-21 | 2025-05-19 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | M - OptEx | — | +4,913 | 18.0K | +37% | — |
| DM | 2025-03-12 | 2025-03-10 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | M - OptEx | — | +4,995 | 14.9K | +50% | — |
| DM | 2025-03-12 | 2025-03-10 | CTKB | Busque Philippe | SVP, Gbl SALES AND SERVICES | F - Tax | $4.36 | -1,947 | 14.1K | -12% | -$8,489 |
| D | 2025-03-12 | 2025-03-10 | CTKB | Holder Michael | Dir | M - OptEx | — | +2,908 | 6,543 | +80% | — |
| DM | 2025-03-12 | 2025-03-10 | CTKB | Yan Ming | CTO, Dir | F - Tax | $4.36 | -5,096 | 6.03M | -0.1% | -$22.2K |
| DM | 2025-03-12 | 2025-03-10 | CTKB | Yan Ming | CTO, Dir | M - OptEx | — | +17.2K | 6.03M | +0.3% | — |
| DM | 2025-03-12 | 2025-03-10 | CTKB | Barnett Valerie | CLO | M - OptEx | — | +15.2K | 77.4K | +24% | — |
| DM | 2025-03-12 | 2025-03-10 | CTKB | Barnett Valerie | CLO | F - Tax | $4.36 | -5,929 | 67.1K | -8% | -$25.9K |
| DM | 2025-03-12 | 2025-03-10 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | M - OptEx | — | +45.2K | 5.23M | +0.9% | — |
| DM | 2025-03-12 | 2025-03-10 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | F - Tax | $4.36 | -12.7K | 5.20M | -0.2% | -$55.2K |
| D | 2025-02-20 | 2025-02-18 | CTKB | Barnett Valerie | CLO | M - OptEx | — | +2,016 | 64.9K | +3% | — |
| D | 2025-02-20 | 2025-02-18 | CTKB | Barnett Valerie | CLO | F - Tax | $5.31 | -786 | 64.1K | -1% | -$4,174 |
| D | 2025-02-20 | 2025-02-18 | CTKB | Yan Ming | CTO, Dir | F - Tax | $5.31 | -588 | 6.02M | -0.0% | -$3,122 |
| D | 2025-02-20 | 2025-02-18 | CTKB | Yan Ming | CTO, Dir | M - OptEx | — | +1,981 | 6.02M | +0.0% | — |
| D | 2025-02-20 | 2025-02-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | M - OptEx | — | +6,758 | 5.19M | +0.1% | — |
| D | 2025-02-20 | 2025-02-18 | CTKB | Jiang Wenbin | Pres AND CEO, Dir | F - Tax | $5.31 | -2,004 | 5.19M | -0.0% | -$10.6K |
Purchase Sale Sale after option exercise All abbreviations