Holder Michael (CIK 1515140) reported 7 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-12). Recent activity: Buy CTKB (43,973 shares), Buy CTKB (1,454 shares), Buy CTKB (2,908 shares), Buy CTKB (2,181 shares), Buy CTKB (2,181 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-12 | Cytek Biosciences, Inc. (CTKB) | Director | Buy | 43,973 | $0 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | Director | Buy | 1,454 | $0 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | Director | Buy | 2,908 | $0 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | Director | Buy | 2,181 | $0 |
| 2025-08-20 | Cytek Biosciences, Inc. (CTKB) | Director | Buy | 2,181 | $0 |
| 2025-05-21 | Cytek Biosciences, Inc. (CTKB) | Director | Buy | 1,454 | $0 |
| 2025-03-12 | Cytek Biosciences, Inc. (CTKB) | Director | Buy | 2,908 | $0 |
Source: SEC Form 4 filings · as of 2026-06-12