// company-profile
Cytek Biosciences, Inc. Insider Trading
CTKBEvery SEC Form 4 insider trading filing for Cytek Biosciences, Inc. (CTKB) — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC.
curl "https://api.form4api.com/v1/transactions?ticker=CTKB" -H "X-Api-Key: YOUR_API_KEY"// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Cytek Biosciences, Inc. insiders bought $0 (40 transactions) and sold $121K (9 transactions).
- Most active insider: Jiang Wenbin with 11 transactions totaling $91K.
- Largest single sale: $53K by Jiang Wenbin on May 18, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Cytek Biosciences, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 12, 2026 | Yan Ming | CTKB | Gift | 135,892 | $0.00 | $0K |
| Jun 10, 2026 | Imper Vera | CTKB | Option Exercise | 43,973 | $0.00 | $0K |
| Jun 10, 2026 | Holder Michael | CTKB | Award | 18,261 | $0.00 | $0K |
| Jun 10, 2026 | NEFF DEBORAH J | CTKB | Option Exercise | 43,973 | — | — |
| Jun 10, 2026 | Imper Vera | CTKB | Award | 33,333 | $0.00 | $0K |
45 more transactions hidden
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