12 insiders reported 219 Form 4 transactions for Cytek Biosciences, Inc. (CTKB) over the past 18 months (most recent 2026-08-20). Recent activity: Yan Ming (CHIEF TECHNOLOGY OFFICER) Buy 7,363 shares, Yan Ming (CHIEF TECHNOLOGY OFFICER) Sell 1,501 shares, Holder Michael (Director) Buy 2,181 shares, Jiang Wenbin (PRESIDENT AND CEO) Buy 11,781 shares, MUIR GLENN P (Director) Buy 3,086 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Buy | 7,363 | $0 |
| 2026-08-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 1,501 | $7,010 |
| 2026-08-20 | Holder Michael | Director | Buy | 2,181 | $0 |
| 2026-08-20 | Jiang Wenbin | PRESIDENT AND CEO | Buy | 11,781 | $0 |
| 2026-08-20 | MUIR GLENN P | Director | Buy | 3,086 | $0 |
| 2026-08-20 | McCombe William D. | Chief Financial Officer | Buy | 6,320 | $0 |
| 2026-08-20 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 2,869 | $13,398 |
| 2026-08-20 | Chin Richard | Director | Buy | 6,107 | $0 |
| 2026-08-20 | McCombe William D. | Chief Financial Officer | Sell | 2,111 | $9,858 |
| 2026-08-20 | Jiang Wenbin | PRESIDENT AND CEO | Buy | 22,100 | $0 |
| 2026-08-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Buy | 5,525 | $0 |
| 2026-08-20 | McCombe William D. | Chief Financial Officer | Buy | 13,051 | $0 |
| 2026-08-20 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 5,382 | $25,134 |
| 2026-08-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 1,346 | $6,286 |
| 2026-08-20 | McCombe William D. | Chief Financial Officer | Sell | 4,392 | $20,511 |
| 2026-08-20 | Jiang Wenbin | PRESIDENT AND CEO | Buy | 29,002 | $0 |
| 2026-08-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Buy | 6,162 | $0 |
| 2026-08-20 | McCombe William D. | Chief Financial Officer | Buy | 16,049 | $0 |
| 2026-08-20 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 7,062 | $32,980 |
| 2026-08-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 3,463 | $16,172 |
| 2026-08-20 | McCombe William D. | Chief Financial Officer | Sell | 5,401 | $25,223 |
| 2026-08-20 | Jiang Wenbin | PRESIDENT AND CEO | Buy | 57,212 | $0 |
| 2026-08-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Buy | 14,220 | $0 |
| 2026-08-20 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 20,956 | $97,865 |
| 2026-08-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 1,778 | $8,303 |
Source: SEC Form 4 filings · as of 2026-08-20