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 |
2022-04-19 Sale |
2022-04-21 8:58 pm |
Cytek Biosciences Inc. | CTKB | Yan Ming Chief Technology Officer |
20,000 | $10.34 | $206,800 | 8,122,803 (Direct) |
View |
2022-04-07 Sale |
2022-04-08 5:33 pm |
Cytek Biosciences Inc. | CTKB | Jiang Wenbin President and CEO |
20,000 | $10.54 | $210,800 | 7,916,040 (Direct) |
View |
2022-03-21 Sale |
2022-03-23 6:03 pm |
Cytek Biosciences Inc. | CTKB | Yan Ming Chief Technology Officer |
20,000 | $11.64 | $232,800 | 8,142,803 (Direct) |
View |
2022-03-14 Purchase |
2022-03-16 5:10 pm |
Cytek Biosciences Inc. | CTKB | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director 10% Owner |
583,870 | $12.31 | $7,188,926 | 13,381,054 (Indirect) |
View |
2022-03-09 Purchase |
2022-03-11 5:27 pm |
Cytek Biosciences Inc. | CTKB | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director |
634,638 | $12.86 | $8,158,671 | 12,797,184 (Indirect) |
View |
2022-03-07 Sale |
2022-03-08 5:55 pm |
Cytek Biosciences Inc. | CTKB | Jiang Wenbin President and CEO |
20,000 | $12.65 | $253,052 | 7,936,040 (Direct) |
View |
2022-03-04 Purchase |
2022-03-08 4:59 pm |
Cytek Biosciences Inc. | CTKB | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director |
647,264 | $12.74 | $8,248,255 | 12,162,546 (Indirect) |
View |
2022-02-28 Purchase |
2022-03-02 5:29 pm |
Cytek Biosciences Inc. | CTKB | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director |
441,865 | $12.95 | $5,721,951 | 11,515,282 (Indirect) |
View |
2022-02-23 Purchase |
2022-02-25 5:43 pm |
Cytek Biosciences Inc. | CTKB | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director |
420,380 | $13.23 | $5,559,664 | 11,073,417 (Indirect) |
View |
2022-02-22 Sale |
2022-02-24 5:41 pm |
Cytek Biosciences Inc. | CTKB | Yan Ming Chief Technology Officer |
20,000 | $13.44 | $268,800 | 8,089,792 (Direct) |
View |
2022-02-17 Purchase |
2022-02-22 5:22 pm |
Cytek Biosciences Inc. | CTKB | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director |
547,380 | $14.06 | $7,695,707 | 10,653,037 (Indirect) |
View |
2022-02-14 Purchase |
2022-02-16 7:39 pm |
Cytek Biosciences Inc. | CTKB | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director |
498,629 | $14.89 | $7,426,825 | 10,105,657 (Indirect) |
View |
2022-02-10 Sale |
2022-02-14 6:23 pm |
Cytek Biosciences Inc. | CTKB | Yan Ming Chief Technology Officer |
20,000 | $15.11 | $302,106 | 8,109,792 (Direct) |
View |
2022-02-07 Sale |
2022-02-09 5:52 pm |
Cytek Biosciences Inc. | CTKB | Jiang Wenbin President and CEO |
20,000 | $14.4 | $288,000 | 7,889,375 (Direct) |
View |
2021-07-27 Purchase |
2021-07-29 4:30 pm |
Cytek Biosciences Inc. | CTKB | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director |
2,950,000 | $17 | $50,150,000 | 507,724 (Indirect) |
View |
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 |
2021-07-22 Purchase |
2021-07-27 9:03 pm |
Cytek Biosciences Inc. | CTKB | Ball Jack Director |
3,000 | $17 | $51,000 | 3,000 (Direct) |
View |
2021-07-22 Purchase |
2021-07-27 9:00 pm |
Cytek Biosciences Inc. | CTKB | Dion Gisele Director |
5,000 | $17 | $85,000 | 5,000 (Direct) |
View |
2021-07-22 Purchase |
2021-07-27 8:59 pm |
Cytek Biosciences Inc. | CTKB | Poirson Allen SVP Marketing and Corp. Dev. |
1,500 | $17 | $25,500 | 40,383 (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 |
2022-03-07 Exercise |
2022-03-08 5:57 pm |
2021-06-28 2027-06-28 |
Cytek Biosciences Inc. | CTKB | Yan Ming Chief Technology Officer |
73,011 | $0 | 8,178,914 (Direct) |
View |
2022-03-07 Exercise |
2022-03-08 5:57 pm |
N/A N/A |
Cytek Biosciences Inc. | CTKB | Yan Ming Chief Technology Officer |
62,456 | $0.25 | 8,178,914 (Direct) |
View |
2022-03-07 Exercise |
2022-03-08 5:57 pm |
N/A N/A |
Cytek Biosciences Inc. | CTKB | Yan Ming Chief Technology Officer |
10,555 | $0.92 | 8,178,914 (Direct) |
View |
2022-03-04 Exercise |
2022-03-08 5:55 pm |
2021-06-28 2022-06-28 |
Cytek Biosciences Inc. | CTKB | Jiang Wenbin President and CEO |
66,665 | $0 | 7,936,040 (Direct) |
View |
2022-03-04 Exercise |
2022-03-08 5:55 pm |
N/A N/A |
Cytek Biosciences Inc. | CTKB | Jiang Wenbin President and CEO |
66,665 | $0.25 | 7,936,040 (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 |
2022-03-04 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 |
2022-02-28 Option Award |
2022-03-02 6:02 pm |
N/A 2032-02-28 |
Cytek Biosciences Inc. | CTKB | Yan Ming Chief Technology Officer |
79,549 | $0 | 79,549 (Direct) |
View |
2022-02-28 Option Award |
2022-03-02 6:00 pm |
N/A 2032-02-28 |
Cytek Biosciences Inc. | CTKB | Poirson Allen SVP Marketing and Corp. Dev. |
31,727 | $0 | 31,727 (Direct) |
View |
2022-02-28 Option Award |
2022-03-02 5:57 pm |
N/A 2032-02-28 |
Cytek Biosciences Inc. | CTKB | Jiang Wenbin President and CEO |
271,295 | $0 | 271,295 (Direct) |
View |
2022-02-28 Option Award |
2022-03-02 5:54 pm |
N/A 2032-02-28 |
Cytek Biosciences Inc. | CTKB | Jeanmonod Patrik Chief Financial Officer |
70,352 | $0 | 70,352 (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 |
2021-12-07 Ownership |
2022-02-14 6:20 pm |
N/A N/A |
Cytek Biosciences Inc. | CTKB | Yan Ming Chief Technology Officer |
10,000 | $0 | 8,129,792 (Direct) |
View |
2021-12-04 Gift |
2022-02-09 5:52 pm |
N/A N/A |
Cytek Biosciences Inc. | CTKB | Jiang Wenbin President and CEO |
5,000 | $0 | 7,889,375 (Direct) |
View |
2021-12-31 Option Award |
2022-01-06 6:54 pm |
N/A 2031-12-31 |
Cytek Biosciences Inc. | CTKB | Imper Vera Director |
28,598 | $0 | 28,598 (Direct) |
View |
2021-07-27 Conversion |
2021-07-29 4:30 pm |
N/A N/A |
Cytek Biosciences Inc. | CTKB | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director |
6,657,028 | $0 | 507,724 (Indirect) |
View |
2021-07-22 Conversion |
2021-07-27 8:57 pm |
N/A N/A |
Cytek Biosciences Inc. | CTKB | DENG FENG Director |
4,760,510 | $0 | 443,800 (Indirect) |
View |
2021-07-22 Conversion |
2021-07-27 8:55 pm |
N/A N/A |
Cytek Biosciences Inc. | CTKB | Jiang Wenbin President and CEO |
2,666,600 | $0 | 2,666,600 (Indirect) |
View |
2021-07-22 Option Award |
2021-07-26 9:53 pm |
N/A 2031-07-22 |
Cytek Biosciences Inc. | CTKB | Yan Ming Chief Technology Officer |
125,000 | $0 | 125,000 (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 |
2021-07-22 Option Award |
2021-07-26 9:49 pm |
N/A 2031-07-22 |
Cytek Biosciences Inc. | CTKB | Jeanmonod Patrik Chief Financial Officer |
125,000 | $0 | 125,000 (Direct) |
View |
2021-07-22 Option Award |
2021-07-26 9:49 pm |
N/A 2031-07-22 |
Cytek Biosciences Inc. | CTKB | Poirson Allen SVP Marketing and Corp. Dev. |
75,000 | $0 | 75,000 (Direct) |
View |
2021-07-22 Option Award |
2021-07-26 9:46 pm |
N/A 2031-07-22 |
Cytek Biosciences Inc. | CTKB | Jiang Wenbin President and CEO |
250,000 | $0 | 250,000 (Direct) |
View |
Ownership |
2021-07-22 9:24 pm |
N/A N/A |
Cytek BioSciences Inc. | CTKB | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director |
0 | $0 | 6,657,028 (Indirect) |
View |
Ownership |
2021-07-22 9:13 pm |
N/A N/A |
Cytek BioSciences Inc. | CTKB | Poirson Allen SVP Marketing and Corp. Dev. |
0 | $0 | 199,995 (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 |
Ownership |
2021-07-22 9:08 pm |
N/A N/A |
Cytek BioSciences Inc. | CTKB | Jeanmonod Patrick Chief Financial Officer |
0 | $0 | 377,323 (Direct) |
View |