11 insiders reported 217 Form 4 transactions for Cytek Biosciences, Inc. (CTKB) over the past 18 months (most recent 2026-06-16). Recent activity: Yan Ming (CHIEF TECHNOLOGY OFFICER) Sell 135,892 shares, NEFF DEBORAH J (Director) Buy 43,973 shares, Holder Michael (Director) Buy 43,973 shares, Ball Jack (Director) Buy 43,973 shares, Imper Vera (Director) Buy 43,973 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-16 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 135,892 | $0 |
| 2026-06-12 | NEFF DEBORAH J | Director | Buy | 43,973 | $0 |
| 2026-06-12 | Holder Michael | Director | Buy | 43,973 | $0 |
| 2026-06-12 | Ball Jack | Director | Buy | 43,973 | $0 |
| 2026-06-12 | Imper Vera | Director | Buy | 43,973 | $0 |
| 2026-05-20 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 1,913 | $6,791 |
| 2026-05-20 | Holder Michael | Director | Buy | 1,454 | $0 |
| 2026-05-20 | Jiang Wenbin | PRESIDENT AND CEO | Buy | 7,854 | $0 |
| 2026-05-20 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Buy | 1,024 | $0 |
| 2026-05-20 | McCombe William D. | Chief Financial Officer | Buy | 6,320 | $0 |
| 2026-05-20 | Chin Richard | Director | Buy | 6,107 | $0 |
| 2026-05-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Buy | 4,908 | $0 |
| 2026-05-20 | Barnett Valerie | CHIEF LEGAL OFFICER | Buy | 2,454 | $0 |
| 2026-05-20 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 263 | $934 |
| 2026-05-20 | McCombe William D. | Chief Financial Officer | Sell | 2,268 | $8,051 |
| 2026-05-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 1,224 | $4,345 |
| 2026-05-20 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 881 | $3,128 |
| 2026-05-20 | Barnett Valerie | CHIEF LEGAL OFFICER | Buy | 5,156 | $0 |
| 2026-05-20 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Buy | 1,473 | $0 |
| 2026-05-20 | Jiang Wenbin | PRESIDENT AND CEO | Buy | 14,733 | $0 |
| 2026-05-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Buy | 3,683 | $0 |
| 2026-05-20 | McCombe William D. | Chief Financial Officer | Buy | 8,700 | $0 |
| 2026-05-20 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 378 | $1,342 |
| 2026-05-20 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 3,588 | $12,737 |
| 2026-05-20 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 919 | $3,262 |
Source: SEC Form 4 filings · as of 2026-06-16