Updated Jul 16, 2026
McCombe William D. has filed 1 SEC Form 4 filing across 1 company in the last 90 days.
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-20 | CTKB | Cytek Biosciences, Inc. | F — Tax withholding / forfeiture | 3.8K | $3.55 | $14K |
| 2026-05-20 | CTKB | Cytek Biosciences, Inc. | M — Option exercise | 10.7K | — | |
| 2026-05-20 | CTKB | Cytek Biosciences, Inc. | F — Tax withholding / forfeiture | 3.1K | $3.55 | $11K |
| 2026-05-20 | CTKB | Cytek Biosciences, Inc. | M — Option exercise | 8.7K | — | |
| 2026-05-20 | CTKB | Cytek Biosciences, Inc. | F — Tax withholding / forfeiture | 2.3K | $3.55 | $8K |
| 2026-05-20 | CTKB | Cytek Biosciences, Inc. | M — Option exercise | 6.3K | — | |
| 2026-03-12 | CTKB | Cytek Biosciences, Inc. | F — Tax withholding / forfeiture | 7.1K | $4.23 | $30K |
| 2026-03-12 | CTKB | Cytek Biosciences, Inc. | M — Option exercise | 17.4K | — | |
| 2026-03-12 | CTKB | Cytek Biosciences, Inc. | F — Tax withholding / forfeiture | 2.6K | $4.23 | $11K |
| 2026-03-12 | CTKB | Cytek Biosciences, Inc. | M — Option exercise | 6.3K | — | |
| 2025-08-18 | CTKB | Cytek Biosciences, Inc. | F — Tax withholding / forfeiture | 5.1K | $4.06 | $21K |
| 2025-08-18 | CTKB | Cytek Biosciences, Inc. | M — Option exercise | 13.1K | — | |
| 2025-08-18 | CTKB | Cytek Biosciences, Inc. | F — Tax withholding / forfeiture | 2.5K | $4.06 | $10K |
| 2025-08-18 | CTKB | Cytek Biosciences, Inc. | M — Option exercise | 6.3K | — |
McCombe William D. is a corporate insider — currently tracked as Insider of Cytek Biosciences, Inc. (CTKB). InsiderAlpha tracks every SEC Form 4 filing in real time.
1 primary Form 4 filings in the last 90 days, covering 1 company.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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