Barnett Valerie
SEC CIK 1873091 · EDGAR
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| CTKB | Cytek Biosciences, Inc. | GC | 153.4K | $32.3K | — | 42 | 2021-07-22 | 2026-05-18 |
Most active insiders at CTKB, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Busque Philippe | SVP, Gbl SALES AND SERVICES | — | — |
| 2 | Imper Vera | Dir | — | — |
| 3 | McCombe William D. | CFO | — | — |
| 4 | Yan Ming | CTO, Dir | — | — |
| 5 | Barnett Valerie | CLO | — | — |
| 6 | Ball Jack | Dir | — | — |
| 7 | Jiang Wenbin | Pres AND CEO, Dir | — | — |
| 8 | Holder Michael | Dir | — | — |
| 9 | Chin Richard | Dir | — | — |
| 10 | NEFF DEBORAH J | Dir | — | — |
Transactions 42
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-05-20 17:45 | 2026-05-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +24.3K | 153.4K | +19% | — |
| DM | 2026-05-20 17:45 | 2026-05-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $3.55 | -8,719 | 150.0K | -5% | -$31.0K |
| DM | 2026-03-12 | 2026-03-10 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +29.7K | 129.9K | +30% | — |
| DM | 2026-03-12 | 2026-03-10 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $4.23 | -11.7K | 125.7K | -9% | -$49.7K |
| D | 2026-02-20 | 2026-02-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $4.20 | -525 | 116.5K | -0.4% | -$2,205 |
| D | 2026-02-20 | 2026-02-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +1,346 | 117.0K | +1% | — |
| DM | 2025-11-20 | 2025-11-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $5.53 | -7,817 | 108.3K | -7% | -$43.2K |
| DM | 2025-11-20 | 2025-11-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +24.3K | 119.1K | +26% | — |
| DM | 2025-08-20 | 2025-08-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +24.3K | 102.8K | +31% | — |
| DM | 2025-08-20 | 2025-08-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $4.06 | -8,829 | 87.2K | -9% | -$35.8K |
| DM | 2025-05-21 | 2025-05-19 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $2.69 | -6,575 | 76.1K | -8% | -$17.7K |
| DM | 2025-05-21 | 2025-05-19 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +16.9K | 75.4K | +29% | — |
| DM | 2025-03-12 | 2025-03-10 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +15.2K | 77.4K | +24% | — |
| DM | 2025-03-12 | 2025-03-10 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $4.36 | -5,929 | 67.1K | -8% | -$25.9K |
| D | 2025-02-20 | 2025-02-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +2,016 | 64.9K | +3% | — |
| D | 2025-02-20 | 2025-02-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $5.31 | -786 | 64.1K | -1% | -$4,174 |
| DM | 2024-11-20 | 2024-11-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +13.4K | 59.0K | +30% | — |
| DM | 2024-11-20 | 2024-11-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $6.03 | -4,499 | 57.7K | -7% | -$27.1K |
| DM | 2024-08-21 | 2024-08-19 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +13.4K | 56.7K | +31% | — |
| DM | 2024-08-21 | 2024-08-19 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $5.53 | -5,046 | 53.9K | -9% | -$27.9K |
| DM | 2024-05-22 | 2024-05-20 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +9,626 | 44.1K | +28% | — |
| DM | 2024-05-22 | 2024-05-20 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $5.96 | -3,751 | 42.0K | -8% | -$22.4K |
| D | 2024-03-13 | 2024-03-11 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +4,908 | 38.1K | +15% | — |
| D | 2024-03-13 | 2024-03-11 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $7.22 | -1,912 | 36.2K | -5% | -$13.8K |
| D | 2024-02-22 | 2024-02-20 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | F - Tax | $8.38 | -786 | 33.2K | -2% | -$6,587 |
| D | 2024-02-22 | 2024-02-20 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | CLO | M - OptEx | — | +2,016 | 34.0K | +6% | — |
| DM | 2023-11-21 | 2023-11-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | F - Tax | $5.98 | -2,220 | 31.9K | -6% | -$13.3K |
| DM | 2023-11-21 | 2023-11-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | M - OptEx | — | +5,697 | 33.4K | +21% | — |
| DM | 2023-08-21 | 2023-08-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | F - Tax | $8.46 | -2,220 | 26.2K | -8% | -$18.8K |
| DM | 2023-08-21 | 2023-08-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | M - OptEx | — | +5,697 | 29.9K | +24% | — |
| DM | 2023-05-19 | 2023-05-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | M - OptEx | — | +4,470 | 22.4K | +25% | — |
| DM | 2023-05-19 | 2023-05-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | F - Tax | $6.69 | -1,742 | 21.6K | -7% | -$11.7K |
| D | 2023-02-23 | 2023-02-21 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | M - OptEx | — | +2,016 | 21.1K | +11% | — |
| D | 2023-02-23 | 2023-02-21 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | F - Tax | $10.97 | -786 | 20.3K | -4% | -$8,622 |
| D | 2022-11-22 | 2022-11-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | F - Tax | $14.75 | -786 | 19.1K | -4% | -$11.6K |
| D | 2022-11-22 | 2022-11-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | M - OptEx | — | +2,016 | 19.9K | +11% | — |
| D | 2022-08-19 | 2022-08-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | M - OptEx | — | +2,016 | 18.7K | +12% | — |
| D | 2022-08-19 | 2022-08-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | F - Tax | $14.06 | -786 | 17.9K | -4% | -$11.1K |
| D | 2022-05-20 | 2022-05-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | F - Tax | $9.65 | -1,047 | 14.0K | -7% | -$10.1K |
| D | 2022-05-20 | 2022-05-18 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | M - OptEx | — | +2,688 | 15.1K | +22% | — |
| D | 2022-03-08 | 2022-03-04 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | M - OptEx | $4.71 | +10.5K | 12.4K | +553% | +$49.5K |
| 2021-07-27 | 2021-07-22 | CTKB | Cytek Biosciences, Inc. | Barnett Valerie | GC | P - Purchase | $17.00 | +1,900 | 1,900 | New | +$32.3K |
Purchase Sale Sale after option exercise All abbreviations