Holder Michael
SEC CIK 1515140 · EDGAR
Most active insiders at CTKB, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Busque Philippe | SVP, Gbl SALES AND SERVICES | — | — |
| 2 | Imper Vera | Dir | — | — |
| 3 | McCombe William D. | CFO | — | — |
| 4 | Yan Ming | CTO, Dir | — | — |
| 5 | Barnett Valerie | CLO | — | — |
| 6 | Ball Jack | Dir | — | — |
| 7 | Jiang Wenbin | Pres AND CEO, Dir | — | — |
| 8 | Holder Michael | Dir | — | — |
| 9 | Chin Richard | Dir | — | — |
| 10 | NEFF DEBORAH J | Dir | — | — |
Transactions 12
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-08-20 16:28 | 2026-08-18 | CTKB | Cytek Biosciences, Inc. | Holder Michael | Dir | M - OptEx | — | +2,181 | 62.9K | +4% | — |
| D | 2026-06-12 19:22 | 2026-06-10 | CTKB | Cytek Biosciences, Inc. | Holder Michael | Dir | M - OptEx | — | +44.0K | 60.7K | +263% | — |
| D | 2026-05-20 18:01 | 2026-05-18 | CTKB | Cytek Biosciences, Inc. | Holder Michael | Dir | M - OptEx | — | +1,454 | 16.7K | +10% | — |
| D | 2026-03-12 | 2026-03-10 | CTKB | Cytek Biosciences, Inc. | Holder Michael | Dir | M - OptEx | — | +2,908 | 15.3K | +24% | — |
| D | 2025-11-20 | 2025-11-18 | CTKB | Cytek Biosciences, Inc. | Holder Michael | Dir | M - OptEx | — | +2,181 | 12.4K | +21% | — |
| D | 2025-08-20 | 2025-08-18 | CTKB | Cytek Biosciences, Inc. | Holder Michael | Dir | M - OptEx | $0.00 | +2,181 | 10.2K | +27% | $0 |
| D | 2025-05-21 | 2025-05-19 | CTKB | Cytek Biosciences, Inc. | Holder Michael | Dir | M - OptEx | — | +1,454 | 7,997 | +22% | — |
| D | 2025-03-12 | 2025-03-10 | CTKB | Cytek Biosciences, Inc. | Holder Michael | Dir | M - OptEx | — | +2,908 | 6,543 | +80% | — |
| D | 2024-11-20 | 2024-11-18 | CTKB | Cytek Biosciences, Inc. | Holder Michael | Dir | M - OptEx | — | +2,181 | 3,635 | +150% | — |
| D | 2024-08-21 | 2024-08-19 | CTKB | Cytek Biosciences, Inc. | Holder Michael | Dir | M - OptEx | — | +1,454 | 1,454 | New | — |
| D | 2022-07-06 | 2022-07-01 | RCEL | AVITA Medical, Inc. | Holder Michael | CFO | A - Grant | — | +36.0K | 46.5K | +342% | — |
| D | 2021-09-07 | 2021-07-06 | RCEL | AVITA Medical, Inc. | Holder Michael | CFO | A - Grant | — | +10.5K | 10.5K | New | — |
Purchase Sale Sale after option exercise All abbreviations