CTKBHealthcareSmall-Cap
Cytek Biosciences, Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for Cytek Biosciences, Inc. (CTKB), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud Research Team · SEC Form 4 & insider trading data analysts
Last updated:
Quick Answer
Are CTKB insiders buying or selling?
Cytek Biosciences, Inc. insiders reported 14 open-market buys ($100.5M) and 66 sells ($10.6M) across 80 Form 4 filings — a net buying position of $89.9M.
Source: SEC EDGAR Form 4
Key Statistics (as of Jun 3, 2025)
Total Form 4 filings
80
SEC EDGAR
Insider filers
9
Insider buys (14)
$100.5M
Insider sells (66)
$10.6M
Insider sentiment
Net buyingNet insider flow of $89.9M in net buying.
Recent CTKB insider transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 3, 2025 | William D. Mccombe | Chief Financial Officer | Purchase | 35.0K | $2.78 | $97.3K |
| Apr 23, 2024 | Ming Yan | CHIEF TECHNOLOGY OFFICER | Sale | 20.0K | $5.87 | $117.4K |
| Apr 11, 2024 | Ming Yan | CHIEF TECHNOLOGY OFFICER | Sale | 1.9K | $7.00 | $13.3K |
| Mar 19, 2024 | Ming Yan | CHIEF TECHNOLOGY OFFICER | Sale | 40.0K | $6.74 | $269.6K |
| Dec 27, 2023 | Patrik Jeanmonod | Chief Financial Officer | Sale | 3.0K | $9.50 | $28.5K |
| Dec 21, 2023 | Ming Yan | Chief Technology Officer | Sale | 20.0K | $9.43 | $188.6K |
| Nov 28, 2023 | Patrik Jeanmonod | Chief Financial Officer | Sale | 3.0K | $6.94 | $20.8K |
| Nov 21, 2023 | Ming Yan | Chief Technology Officer | Sale | 20.0K | $6.03 | $120.6K |
| Nov 8, 2023 | Jiang Wenbin | President and CEO | Sale | 20.0K | $4.34 | $86.8K |
| Oct 25, 2023 | Patrik Jeanmonod | Chief Financial Officer | Sale | 3.0K | $4.68 | $14.0K |
| Oct 24, 2023 | Ming Yan | Chief Technology Officer | Sale | 20.0K | $4.80 | $96.0K |
| Oct 11, 2023 | Jiang Wenbin | President and CEO | Sale | 20.0K | $5.33 | $106.6K |
| Sep 26, 2023 | Patrik Jeanmonod | Chief Financial Officer | Sale | 3.0K | $6.38 | $19.1K |
| Sep 20, 2023 | Ming Yan | Chief Technology Officer | Sale | 20.0K | $6.49 | $129.8K |
| Sep 8, 2023 | Jiang Wenbin | President and CEO | Sale | 20.0K | $6.83 | $136.6K |
| Aug 28, 2023 | Patrik Jeanmonod | Chief Financial Officer | Sale | 3.0K | $7.69 | $23.1K |
| Aug 22, 2023 | Ming Yan | Chief Technology Officer | Sale | 20.0K | $8.07 | $161.4K |
| Aug 9, 2023 | Jiang Wenbin | President and CEO | Sale | 20.0K | $9.04 | $180.8K |
| Jul 25, 2023 | Patrik Jeanmonod | Chief Financial Officer | Purchase | 3.0K | $9.17 | $27.5K |
| Jul 20, 2023 | Ming Yan | Chief Technology Officer | Sale | 20.0K | $8.76 | $175.2K |
| Jul 8, 2023 | Jiang Wenbin | President and CEO | Sale | 20.0K | $8.48 | $169.6K |
| Jun 27, 2023 | Patrik Jeanmonod | Chief Financial Officer | Sale | 3.0K | $7.96 | $23.9K |
| Jun 21, 2023 | Ming Yan | Chief Technology Officer | Sale | 20.0K | $8.18 | $163.6K |
| Jun 7, 2023 | Jiang Wenbin | President and CEO | Sale | 20.0K | $8.23 | $164.6K |
| May 25, 2023 | Patrik Jeanmonod | Chief Financial Officer | Sale | 3.0K | $7.76 | $23.3K |
Showing the 25 most recent of 80 Form 4 filings for Cytek Biosciences, Inc..
Most active CTKB insiders
- Ming Yan29 filings
- Jiang Wenbin21 filings
- Patrik Jeanmonod16 filings
- Peter Kolchinsky8 filings
- Jack Ball2 filings
Ask anything about CTKB insider activity
Use Trabud's AI agent to query Cytek Biosciences, Inc.'s Form 4 history in plain English — "Show me CTKB CEO purchases this year" or compare it against any other ticker.
Open the AI agentCTKB insider trading FAQ
Are Cytek Biosciences, Inc. insiders buying or selling?
Across 80 SEC Form 4 filings, Cytek Biosciences, Inc. (CTKB) insiders reported 14 open-market purchases totaling $100.5M and 66 sales totaling $10.6M. That is a net buying position of $89.9M.
How many insiders trade CTKB stock?
9 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for Cytek Biosciences, Inc.. The most recent filing was accepted on Jun 3, 2025.
Where does Trabud get CTKB insider trading data?
All CTKB insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.
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