Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Cytek Biosciences, Inc. (CTKB) since 2021 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Cytek Biosciences, Inc.. Table 2 shows the detailed insider transactions. This company's CIK number is 1831915.
Total stock buying since 2021: $94,881,433.
Total stock sales since 2021: $10,849,539.
Total stock option exercises since 2021: $147,071.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 35,000 | $97,300 | 0 | $0 | 420,861 | $0 |
| 2024 | 0 | $0 | 61,900 | $400,309 | 291,928 | $0 |
| 2023 | 0 | $0 | 495,489 | $4,233,106 | 151,381 | $0 |
| 2022 | 3,353,646 | $44,440,333 | 497,000 | $6,216,124 | 274,499 | $147,071 |
| 2021 | 2,961,400 | $50,343,800 | 0 | $0 | 0 | $0 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-08 | 0 | $0 | 0 | $0 | 147,973 | $0 |
| 2025-06 | 35,000 | $97,300 | 0 | $0 | 62,824 | $0 |
| 2025-05 | 0 | $0 | 0 | $0 | 120,585 | $0 |
| 2025-03 | 0 | $0 | 0 | $0 | 85,482 | $0 |
| 2025-02 | 0 | $0 | 0 | $0 | 3,997 | $0 |
| 2024-11 | 0 | $0 | 0 | $0 | 80,038 | $0 |
| 2024-08 | 0 | $0 | 0 | $0 | 90,077 | $0 |
| 2024-05 | 0 | $0 | 0 | $0 | 68,898 | $0 |
| 2024-04 | 0 | $0 | 21,900 | $130,709 | 0 | $0 |
| 2024-03 | 0 | $0 | 40,000 | $269,600 | 45,370 | $0 |
| 2024-02 | 0 | $0 | 0 | $0 | 7,545 | $0 |
| 2023-12 | 0 | $0 | 23,000 | $217,100 | 0 | $0 |
| 2023-11 | 0 | $0 | 43,000 | $228,220 | 47,253 | $0 |
| 2023-10 | 0 | $0 | 43,000 | $216,640 | 0 | $0 |
| 2023-09 | 0 | $0 | 43,000 | $285,540 | 0 | $0 |
| 2023-08 | 0 | $0 | 43,000 | $365,269 | 47,938 | $0 |
| 2023-07 | 0 | $0 | 43,000 | $372,310 | 0 | $0 |
| 2023-06 | 0 | $0 | 43,000 | $352,080 | 0 | $0 |
| 2023-05 | 0 | $0 | 43,000 | $398,080 | 42,893 | $0 |
| 2023-04 | 0 | $0 | 43,000 | $402,520 | 0 | $0 |
| 2023-03 | 0 | $0 | 43,000 | $413,389 | 0 | $0 |
| 2023-02 | 0 | $0 | 41,989 | $509,483 | 13,297 | $0 |
| 2023-01 | 0 | $0 | 43,500 | $472,475 | 0 | $0 |
| 2022-12 | 0 | $0 | 43,500 | $478,995 | 0 | $0 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-18 | Busque Philippe (SVP, GLOBAL SALES AND SERVICES) | Option Ex | 7,371 | .00 | 0 |
| 2025-08-18 | Mccombe William D. (Chief Financial Officer) | Option Ex | 19,371 | .00 | 0 |
| 2025-08-18 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Option Ex | 21,031 | .00 | 0 |
| 2025-08-18 | Barnett Valerie (CHIEF LEGAL OFFICER) | Option Ex | 24,307 | .00 | 0 |
| 2025-08-18 | Jiang Wenbin (PRESIDENT AND CEO) | Option Ex | 69,641 | .00 | 0 |
| 2025-08-18 | Holder Michael | Option Ex | 2,181 | .00 | 0 |
| 2025-08-18 | Chin Richard | Option Ex | 4,071 | .00 | 0 |
| 2025-06-05 | Imper Vera | Option Ex | 15,706 | .00 | 0 |
| 2025-06-05 | Ball Jack | Option Ex | 15,706 | .00 | 0 |
| 2025-06-05 | Neff Deborah J | Option Ex | 15,706 | .00 | 0 |
| 2025-06-05 | Hardison Don M | Option Ex | 15,706 | .00 | 0 |
| 2025-06-02 | Mccombe William D. (Chief Financial Officer) | Buy | 35,000 | 2.78 | 97,300 |
| 2025-05-19 | Busque Philippe (SVP, GLOBAL SALES AND SERVICES) | Option Ex | 4,913 | .00 | 0 |
| 2025-05-19 | Mccombe William D. (Chief Financial Officer) | Option Ex | 33,983 | .00 | 0 |
| 2025-05-19 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Option Ex | 14,680 | .00 | 0 |
| 2025-05-19 | Barnett Valerie (CHIEF LEGAL OFFICER) | Option Ex | 16,876 | .00 | 0 |
| 2025-05-19 | Jiang Wenbin (PRESIDENT AND CEO) | Option Ex | 48,679 | .00 | 0 |
| 2025-05-19 | Holder Michael | Option Ex | 1,454 | .00 | 0 |
| 2025-03-10 | Busque Philippe (SVP, GLOBAL SALES AND SERVICES) | Option Ex | 4,995 | .00 | 0 |
| 2025-03-10 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Option Ex | 17,183 | .00 | 0 |
| 2025-03-10 | Barnett Valerie (CHIEF LEGAL OFFICER) | Option Ex | 15,221 | .00 | 0 |
| 2025-03-10 | Jiang Wenbin (PRESIDENT AND CEO) | Option Ex | 45,175 | .00 | 0 |
| 2025-03-10 | Holder Michael | Option Ex | 2,908 | .00 | 0 |
| 2025-02-18 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Option Ex | 1,981 | .00 | 0 |
| 2025-02-18 | Barnett Valerie (CHIEF LEGAL OFFICER) | Option Ex | 2,016 | .00 | 0 |
| 2024-11-18 | Busque Philippe (SVP, GLOBAL SALES AND SERVICES) | Option Ex | 3,746 | .00 | 0 |
| 2024-11-18 | Poirson Allen (SVP BUS. AND CORP. DEV.) | Option Ex | 5,171 | .00 | 0 |
| 2024-11-18 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Option Ex | 14,869 | .00 | 0 |
| 2024-11-18 | Barnett Valerie (CHIEF LEGAL OFFICER) | Option Ex | 13,432 | .00 | 0 |
| 2024-11-18 | Jiang Wenbin (PRESIDENT AND CEO) | Option Ex | 40,639 | .00 | 0 |
| 2024-11-18 | Holder Michael | Option Ex | 2,181 | .00 | 0 |
| 2024-08-19 | Busque Philippe (SVP, GLOBAL SALES AND SERVICES) | Option Ex | 3,746 | .00 | 0 |
| 2024-08-19 | Williams Paul Christopher (CHIEF OPERATING OFFICER) | Option Ex | 10,766 | .00 | 0 |
| 2024-08-19 | Poirson Allen (SVP BUS. AND CORP. DEV.) | Option Ex | 5,171 | .00 | 0 |
| 2024-08-19 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Option Ex | 14,869 | .00 | 0 |
| 2024-08-19 | Barnett Valerie (CHIEF LEGAL OFFICER) | Option Ex | 13,432 | .00 | 0 |
| 2024-08-19 | Jiang Wenbin (PRESIDENT AND CEO) | Option Ex | 40,639 | .00 | 0 |
| 2024-08-19 | Holder Michael | Option Ex | 1,454 | .00 | 0 |
| 2024-05-20 | Busque Philippe (SVP, GLOBAL SALES AND SERVICES) | Option Ex | 8,132 | .00 | 0 |
| 2024-05-20 | Williams Paul Christopher (CHIEF OPERATING OFFICER) | Option Ex | 7,512 | .00 | 0 |
| 2024-05-20 | Poirson Allen (SVP BUS. AND CORP. DEV.) | Option Ex | 3,711 | .00 | 0 |
| 2024-05-20 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Option Ex | 10,572 | .00 | 0 |
| 2024-05-20 | Barnett Valerie (CHIEF LEGAL OFFICER) | Option Ex | 9,626 | .00 | 0 |
| 2024-05-20 | Jiang Wenbin (PRESIDENT AND CEO) | Option Ex | 29,345 | .00 | 0 |
| 2024-04-19 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Sale | 20,000 | 5.87 | 117,400 |
| 2024-04-09 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Sale | 1,900 | 7.00 | 13,309 |
| 2024-03-20 | Busque Philippe (SVP, GLOBAL SALES AND SERVICES) | Option Ex | 5,464 | .00 | 0 |
| 2024-03-19 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Sale | 20,000 | 6.71 | 134,200 |
| 2024-03-18 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Sale | 20,000 | 6.77 | 135,400 |
| 2024-03-11 | Williams Paul Christopher (CHIEF OPERATING OFFICER) | Option Ex | 1,227 | .00 | 0 |
| 2024-03-11 | Poirson Allen (SVP BUS. AND CORP. DEV.) | Option Ex | 3,338 | .00 | 0 |
| 2024-03-11 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Option Ex | 9,817 | .00 | 0 |
| 2024-03-11 | Barnett Valerie (CHIEF LEGAL OFFICER) | Option Ex | 4,908 | .00 | 0 |
| 2024-03-11 | Jeanmonod Patrik (CHIEF FINANCIAL OFFICER) | Option Ex | 4,908 | .00 | 0 |
| 2024-03-11 | Jiang Wenbin (PRESIDENT AND CEO) | Option Ex | 15,708 | .00 | 0 |
| 2024-02-20 | Williams Paul Christopher (CHIEF OPERATING OFFICER) | Option Ex | 1,006 | .00 | 0 |
| 2024-02-20 | Poirson Allen (SVP BUS. AND CORP. DEV.) | Option Ex | 790 | .00 | 0 |
| 2024-02-20 | Yan Ming (CHIEF TECHNOLOGY OFFICER) | Option Ex | 1,981 | .00 | 0 |
| 2024-02-20 | Barnett Valerie (CHIEF LEGAL OFFICER) | Option Ex | 2,016 | .00 | 0 |
| 2024-02-20 | Jeanmonod Patrik (CHIEF FINANCIAL OFFICER) | Option Ex | 1,752 | .00 | 0 |
| 2023-12-26 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,000 | 9.50 | 28,500 |
| 2023-12-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 9.43 | 188,600 |
| 2023-11-24 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,000 | 6.94 | 20,820 |
| 2023-11-20 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 6.03 | 120,600 |
| 2023-11-18 | Williams Paul Christopher (Chief Operating Officer) | Option Ex | 4,947 | .00 | 0 |
| 2023-11-18 | Poirson Allen (SVP Bus. and Corp. Dev.) | Option Ex | 3,293 | .00 | 0 |
| 2023-11-18 | Yan Ming (Chief Technology Officer) | Option Ex | 9,344 | .00 | 0 |
| 2023-11-18 | Barnett Valerie (General Counsel) | Option Ex | 5,697 | .00 | 0 |
| 2023-11-18 | Jeanmonod Patrik (Chief Financial Officer) | Option Ex | 5,433 | .00 | 0 |
| 2023-11-18 | Jiang Wenbin (President and CEO) | Option Ex | 18,539 | .00 | 0 |
| 2023-11-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 4.34 | 86,800 |
| 2023-10-24 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,000 | 4.68 | 14,040 |
| 2023-10-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 4.80 | 96,000 |
| 2023-10-09 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 5.33 | 106,600 |
| 2023-09-25 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,000 | 6.38 | 19,140 |
| 2023-09-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 6.49 | 129,800 |
| 2023-09-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 6.83 | 136,600 |
| 2023-08-24 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,000 | 7.69 | 23,070 |
| 2023-08-21 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 8.07 | 161,400 |
| 2023-08-18 | Williams Paul Christopher (Chief Operating Officer) | Option Ex | 920 | .00 | 0 |
| 2023-08-18 | Garland Jonathan Todd (Chief Commercial Officer) | Option Ex | 4,712 | .00 | 0 |
| 2023-08-18 | Poirson Allen (SVP Bus. and Corp. Dev.) | Option Ex | 3,293 | .00 | 0 |
| 2023-08-18 | Yan Ming (Chief Technology Officer) | Option Ex | 9,344 | .00 | 0 |
| 2023-08-18 | Barnett Valerie (General Counsel) | Option Ex | 5,697 | .00 | 0 |
| 2023-08-18 | Jeanmonod Patrik (Chief Financial Officer) | Option Ex | 5,433 | .00 | 0 |
| 2023-08-18 | Jiang Wenbin (President and CEO) | Option Ex | 18,539 | .00 | 0 |
| 2023-08-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 9.04 | 180,799 |
| 2023-07-24 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,000 | 9.17 | 27,510 |
| 2023-07-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 8.76 | 175,200 |
| 2023-07-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 8.48 | 169,600 |
| 2023-06-26 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,000 | 7.96 | 23,880 |
| 2023-06-20 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 8.18 | 163,600 |
| 2023-06-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 8.23 | 164,600 |
| 2023-05-24 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,000 | 7.76 | 23,280 |
| 2023-05-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 7.19 | 143,800 |
| 2023-05-18 | Williams Paul Christopher (Chief Operating Officer) | Option Ex | 613 | .00 | 0 |
| 2023-05-18 | Garland Jonathan Todd (Chief Commercial Officer) | Option Ex | 9,644 | .00 | 0 |
| 2023-05-18 | Poirson Allen (SVP Bus. and Corp. Dev.) | Option Ex | 2,459 | .00 | 0 |
| 2023-05-18 | Yan Ming (Chief Technology Officer) | Option Ex | 6,889 | .00 | 0 |
| 2023-05-18 | Barnett Valerie (General Counsel) | Option Ex | 4,470 | .00 | 0 |
| 2023-05-18 | Jeanmonod Patrik (Chief Financial Officer) | Option Ex | 4,206 | .00 | 0 |
| 2023-05-18 | Jiang Wenbin (President and CEO) | Option Ex | 14,612 | .00 | 0 |
| 2023-05-08 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 11.55 | 231,000 |
| 2023-04-24 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,000 | 10.24 | 30,720 |
| 2023-04-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 9.71 | 194,200 |
| 2023-04-10 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 8.88 | 177,600 |
| 2023-03-24 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,000 | 8.33 | 24,990 |
| 2023-03-20 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 9.29 | 185,799 |
| 2023-03-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 10.13 | 202,600 |
| 2023-02-21 | Poirson Allen (SVP Bus. and Corp. Dev.) | Option Ex | 790 | .00 | 0 |
| 2023-02-21 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 10.94 | 218,800 |
| 2023-02-21 | Yan Ming (Chief Technology Officer) | Option Ex | 1,981 | .00 | 0 |
| 2023-02-21 | Barnett Valerie (General Counsel) | Option Ex | 2,016 | .00 | 0 |
| 2023-02-21 | Jeanmonod Patrik (Chief Financial Officer) | Option Ex | 1,752 | .00 | 0 |
| 2023-02-21 | Jiang Wenbin (President and CEO) | Option Ex | 6,758 | .00 | 0 |
| 2023-02-08 | Yan Ming (Chief Technology Officer) | Sale | 897 | 13.53 | 12,136 |
| 2023-02-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 13.19 | 263,800 |
| 2023-02-03 | Yan Ming (Chief Technology Officer) | Sale | 1,092 | 13.51 | 14,747 |
| 2023-01-24 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,500 | 11.05 | 38,675 |
| 2023-01-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 11.03 | 220,600 |
| 2023-01-09 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 10.66 | 213,200 |
| 2022-12-27 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,500 | 9.77 | 34,195 |
| 2022-12-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 10.38 | 207,600 |
| 2022-12-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 11.86 | 237,200 |
| 2022-11-29 | Ball Jack (Director) | Option Ex | 23,999 | .66 | 15,839 |
| 2022-11-25 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,500 | 14.30 | 50,050 |
| 2022-11-21 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 14.66 | 293,200 |
| 2022-11-18 | Poirson Allen (SVP Bus. and Corp. Dev.) | Option Ex | 790 | .00 | 0 |
| 2022-11-18 | Yan Ming (Chief Technology Officer) | Option Ex | 1,981 | .00 | 0 |
| 2022-11-18 | Barnett Valerie (General Counsel) | Option Ex | 2,016 | .00 | 0 |
| 2022-11-18 | Jeanmonod Patrik (Chief Financial Officer) | Option Ex | 1,752 | .00 | 0 |
| 2022-11-18 | Jiang Wenbin (President and CEO) | Option Ex | 6,758 | .00 | 0 |
| 2022-11-14 | Ball Jack (Director) | Sale | 16,000 | 14.69 | 235,040 |
| 2022-11-14 | Ball Jack (Director) | Option Ex | 16,000 | .40 | 6,400 |
| 2022-11-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 14.76 | 295,200 |
| 2022-10-24 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,500 | 15.16 | 53,060 |
| 2022-10-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 14.42 | 288,400 |
| 2022-10-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 14.79 | 295,800 |
| 2022-09-26 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,500 | 12.63 | 44,205 |
| 2022-09-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 12.42 | 248,400 |
| 2022-09-08 | Jeanmonod Patrik (Chief Financial Officer) | Option Ex | 40,000 | .40 | 16,000 |
| 2022-09-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 12.89 | 257,800 |
| 2022-08-24 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,500 | 13.45 | 47,075 |
| 2022-08-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 13.62 | 272,400 |
| 2022-08-18 | Poirson Allen (SVP Marketing and Corp. Dev.) | Option Ex | 790 | .00 | 0 |
| 2022-08-18 | Yan Ming (Chief Technology Officer) | Option Ex | 1,981 | .00 | 0 |
| 2022-08-18 | Barnett Valerie (General Counsel) | Option Ex | 2,016 | .00 | 0 |
| 2022-08-18 | Jeanmonod Patrik (Chief Financial Officer) | Option Ex | 1,752 | .00 | 0 |
| 2022-08-18 | Jiang Wenbin (President and CEO) | Option Ex | 6,758 | .00 | 0 |
| 2022-08-08 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 15.09 | 301,800 |
| 2022-08-01 | Jeanmonod Patrik (Chief Financial Officer) | Sale | 3,500 | 12.80 | 44,800 |
| 2022-07-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 11.83 | 236,600 |
| 2022-07-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 11.19 | 223,800 |
| 2022-06-21 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 10.06 | 201,200 |
| 2022-06-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 10.75 | 215,000 |
| 2022-05-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 9.92 | 198,400 |
| 2022-05-18 | Poirson Allen (SVP Marketing and Corp. Dev.) | Option Ex | 1,053 | .00 | 0 |
| 2022-05-18 | Yan Ming (Chief Technology Officer) | Option Ex | 2,642 | .00 | 0 |
| 2022-05-18 | Barnett Valerie (General Counsel) | Option Ex | 2,688 | .00 | 0 |
| 2022-05-18 | Jeanmonod Patrik (Chief Financial Officer) | Option Ex | 2,336 | .00 | 0 |
| 2022-05-18 | Jiang Wenbin (President and CEO) | Option Ex | 9,011 | .00 | 0 |
| 2022-05-09 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 8.01 | 160,200 |
| 2022-04-19 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 10.34 | 206,800 |
| 2022-04-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 10.54 | 210,799 |
| 2022-03-21 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 11.64 | 232,800 |
| 2022-03-15 | Shah Rajeev M. | Buy | 241,727 | 12.27 | 2,965,023 |
| 2022-03-14 | Shah Rajeev M. | Buy | 342,143 | 12.35 | 4,224,097 |
| 2022-03-11 | Shah Rajeev M. | Buy | 337,492 | 12.77 | 4,309,435 |
| 2022-03-10 | Shah Rajeev M. | Buy | 256,992 | 12.95 | 3,327,532 |
| 2022-03-09 | Shah Rajeev M. | Buy | 40,154 | 12.99 | 521,761 |
| 2022-03-08 | Shah Rajeev M. | Buy | 245,701 | 12.86 | 3,159,960 |
| 2022-03-07 | Yan Ming (Chief Technology Officer) | Option Ex | 73,011 | .58 | 42,711 |
| 2022-03-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 13.19 | 263,700 |
| 2022-03-07 | Shah Rajeev M. | Buy | 337,901 | 12.61 | 4,260,931 |
| 2022-03-04 | Barnett Valerie (General Counsel) | Option Ex | 10,500 | 4.71 | 49,455 |
| 2022-03-04 | Jiang Wenbin (President and CEO) | Option Ex | 66,665 | .25 | 16,666 |
| 2022-03-04 | Shah Rajeev M. | Buy | 63,662 | 12.99 | 827,224 |
| 2022-03-02 | Shah Rajeev M. | Buy | 138,255 | 12.89 | 1,782,245 |
| 2022-03-01 | Shah Rajeev M. | Buy | 294,864 | 12.98 | 3,826,450 |
| 2022-02-28 | Shah Rajeev M. | Buy | 8,746 | 12.97 | 113,426 |
| 2022-02-22 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 13.44 | 268,800 |
| 2022-02-22 | Shah Rajeev M. | Buy | 214,922 | 13.46 | 2,891,990 |
| 2022-02-18 | Shah Rajeev M. | Buy | 166,229 | 14.12 | 2,346,322 |
| 2022-02-17 | Shah Rajeev M. | Buy | 166,229 | 14.78 | 2,457,197 |
| 2022-02-16 | Shah Rajeev M. | Buy | 166,200 | 14.98 | 2,489,343 |
| 2022-02-15 | Shah Rajeev M. | Buy | 166,200 | 14.98 | 2,490,507 |
| 2022-02-14 | Shah Rajeev M. | Buy | 166,229 | 14.72 | 2,446,890 |
| 2022-02-10 | Yan Ming (Chief Technology Officer) | Sale | 20,000 | 15.19 | 303,800 |
| 2022-02-07 | Jiang Wenbin (President and CEO) | Sale | 20,000 | 14.40 | 288,000 |
| 2021-07-27 | Shah Rajeev M. | Buy | 2,950,000 | 17.00 | 50,150,000 |
| 2021-07-22 | Poirson Allen (SVP Marketing and Corp. Dev.) | Buy | 1,500 | 17.00 | 25,500 |
| 2021-07-22 | Barnett Valerie (General Counsel) | Buy | 1,900 | 17.00 | 32,300 |
| 2021-07-22 | Dion Gisele (Director) | Buy | 5,000 | 17.00 | 85,000 |
| 2021-07-22 | Ball Jack (Director) | Buy | 3,000 | 17.00 | 51,000 |
Insider trading activities including stock purchases, stock sales, and option exercises of CTKB listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Cytek Biosciences, Inc. (symbol CTKB, CIK number 1831915) see the Securities and Exchange Commission (SEC) website.