Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>

Common stock purchase or sale:
Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
2021-07-22 Purchase | 2021-07-27 9:04 pm | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 1,900 | $17 | $32,300 | 1,900 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
2023-03-03 Option Award | 2023-03-07 7:42 pm | N/A 2033-03-03 | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 147,937 | $0 | 147,937 (Direct) | View |
2023-02-21 Tax Withholding | 2023-02-23 6:40 pm | N/A N/A | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 786 | $10.97 | 43,864 (Direct) | View |
2023-02-21 Exercise | 2023-02-23 6:40 pm | N/A N/A | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 2,016 | $0 | 43,864 (Direct) | View |
2022-11-18 Tax Withholding | 2022-11-22 6:13 pm | N/A N/A | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 786 | $14.75 | 44,649 (Direct) | View |
2022-11-18 Exercise | 2022-11-22 6:13 pm | N/A N/A | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 2,016 | $0 | 44,649 (Direct) | View |
2022-08-18 Tax Withholding | 2022-08-19 7:30 pm | N/A N/A | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 786 | $14.06 | 45,435 (Direct) | View |
2022-08-18 Exercise | 2022-08-19 7:30 pm | N/A N/A | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 2,016 | $0 | 45,435 (Direct) | View |
2022-05-18 Tax Withholding | 2022-05-20 7:09 pm | N/A N/A | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 1,047 | $9.65 | 43,611 (Direct) | View |
2022-05-18 Exercise | 2022-05-20 7:09 pm | N/A N/A | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 2,688 | $0 | 43,611 (Direct) | View |
2022-03-04 Exercise | 2022-03-08 5:51 pm | N/A N/A | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 10,500 | $4.71 | 135,230 (Direct) | View |
2022-03-04 Exercise | 2022-03-08 5:51 pm | N/A 2031-03-22 | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 10,500 | $0 | 135,230 (Direct) | View |
2022-02-28 Option Award | 2022-03-02 5:51 pm | N/A 2032-02-28 | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 80,929 | $0 | 80,929 (Direct) | View |
2021-07-22 Option Award | 2021-07-26 9:50 pm | N/A 2031-07-22 | Cytek Biosciences Inc. | CTKB | Barnett Valerie General Counsel | 75,000 | $0 | 75,000 (Direct) | View |
Ownership | 2021-07-22 9:10 pm | N/A 2031-03-22 | Cytek BioSciences Inc. | CTKB | Barnett Valerie General Counsel | 0 | $0 | 133,330 (Direct) | View |