12 insiders reported 236 Form 4 transactions for Cytek Biosciences, Inc. (CTKB) over the past 18 months (most recent 2026-08-20). Recent activity: Chin Richard (Director) Buy 6,107 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 | Chin Richard | Director | Buy | 6,107 | $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 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Buy | 7,363 | $0 |
| 2026-08-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 1,778 | $8,303 |
| 2026-08-20 | McCombe William D. | Chief Financial Officer | Buy | 6,320 | $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 | 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 | Buy | 29,002 | $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 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 2,869 | $13,398 |
Source: SEC Form 4 filings · as of 2026-08-20