Busque Philippe (CIK 1991396) reported 36 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-20). Recent activity: Sell CTKB (263 shares), Sell CTKB (1,424 shares), Buy CTKB (1,473 shares), Sell CTKB (378 shares), Buy CTKB (2,416 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 263 | $934 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 1,424 | $5,055 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 1,473 | $0 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 378 | $1,342 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 2,416 | $0 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 620 | $2,201 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 5,551 | $0 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 1,024 | $0 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 1,496 | $6,328 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 635 | $2,686 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 2,946 | $0 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 912 | $3,858 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 2,049 | $0 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 4,833 | $0 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 1,536 | $0 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 393 | $2,173 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 2,210 | $0 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 565 | $3,124 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 3,625 | $0 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 927 | $5,126 |
| 2025-08-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 3,625 | $0 |
| 2025-08-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 1,536 | $0 |
| 2025-08-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 599 | $2,432 |
| 2025-08-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Buy | 2,210 | $0 |
| 2025-08-20 | Cytek Biosciences, Inc. (CTKB) | SVP, GLOBAL SALES AND SERVICES | Sell | 861 | $3,496 |
Source: SEC Form 4 filings · as of 2026-05-20