Cytek Biosciences, Inc. (CTKB) has 7 SEC Form 4 insider filings on record in the last 90 days. Most recent filing: Aug. 20, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
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| Aug. 20, 2026 filed Aug. 18, 2026 | Jiang Wenbin PRESIDENT AND CEO | — | +83,826 | +11% | No | |
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| Aug. 20, 2026 filed Aug. 18, 2026 | McCombe William D. Chief Financial Officer | — | +23,516 | +11% | No | |
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| Aug. 20, 2026 filed Aug. 18, 2026 | MUIR GLENN P Director | $0 | 6,172 | +6% | No | |
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| Aug. 20, 2026 filed Aug. 18, 2026 | Holder Michael Director | $0 | 4,362 | +43% | No | |
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| Aug. 20, 2026 filed Aug. 18, 2026 | Chin Richard Director | $0 | 12,214 | +16% | No | |
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Showing the 5 most recent of 7 filings in the last 90 days.
Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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