Cytek Biosciences, Inc.
CTKB- Exchange
- Nasdaq
- Industry
- Laboratory Analytical Instruments
- SEC CIK
- 0001831915
No open-market purchases or sales by Cytek Biosciences, Inc. insiders were filed in the last 90 days; 154 institutions reported holding it in 13F filings for Q2 2026, worth $361.0M in total; HHLR Advisors (Hillhouse) is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Cytek Biosciences, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Cytek Biosciences, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Jiang Wenbin | PRESIDENT AND CEO | 5,561,029 | Aug 20, 2026 | 5 |
| McCombe William D. | Chief Financial Officer | 134,693 | Aug 20, 2026 | 4 |
| Muir Glenn P | Director | 3,086 | Aug 20, 2026 | 2 |
| Holder Michael | Director | 62,875 | Aug 20, 2026 | 5 |
| Chin Richard | Director | 28,499 | Aug 20, 2026 | 5 |
| Yan Ming | CHIEF TECHNOLOGY OFFICER | 4,821,870 | Aug 20, 2026 | 7 |
| Feuchtwang Ilan | Chief Legal Officer, Secretary | – | Aug 12, 2026 | 1 |
| Neff Deborah J | Director | 59,679 | Jun 12, 2026 | 1 |
| Ball Jack | Director | 86,678 | Jun 12, 2026 | 1 |
| Imper Vera | Director | 59,679 | Jun 12, 2026 | 1 |
| Barnett Valerie | CHIEF LEGAL OFFICER | 150,012 | May 20, 2026 | 4 |
| Busque Philippe | SVP, GLOBAL SALES AND SERVICES | 43,466 | May 20, 2026 | 3 |
| Hardison Don M | Director | 15,706 | Jun 9, 2025 | 0 |
| Poirson Allen | SVP BUS. AND CORP. DEV. | 59,981 | Nov 20, 2024 | 0 |
| Williams Paul Christopher | CHIEF OPERATING OFFICER | 16,473 | Aug 21, 2024 | 0 |
| Jeanmonod Patrik | CHIEF FINANCIAL OFFICER | 97,465 | Mar 13, 2024 | 0 |
| Garland Jonathan Todd | Chief Commercial Officer | 8,763 | Aug 21, 2023 | 0 |
| Dion Gisele | Director | 5,000 | Jun 16, 2023 | 0 |
| RA Capital Healthcare Fund LP | Director, 10% Owner | 13,381,054Indirect | Mar 16, 2022 | 0 |
| Ra Capital Management, L.P. | Director, 10% Owner | 13,381,054Indirect | Mar 16, 2022 | 0 |
| Kolchinsky Peter | Director, 10% Owner | 13,381,054Indirect | Mar 16, 2022 | 0 |
| Shah Rajeev M. | Director, 10% Owner | 13,381,054Indirect | Mar 16, 2022 | 0 |
| RA Capital Nexus Fund II, L.P. | Director | 13,381,054Indirect | Mar 16, 2022 | 0 |
| Deng Feng | Director | 443,800Indirect | Jul 27, 2021 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 7, 2023 (view filing) | Mar 7 | Same day | Jiang WenbinPresident and CEO | SSale | −20.0K | $10.13 | −$202.6K | −0.3%7.70M after | |
| Mar 21, 2023 (view filing) | Mar 20 | 1 day | Yan MingChief Technology Officer | SSale | −20.0K | $9.29 | −$185.8K | −0.3%7.91M after | |
| Mar 24, 2023 (view filing) | Mar 24 | Same day | Jeanmonod PatrikChief Financial Officer | SSale | −3.00K | $8.33 | −$25.0K | −2.6%111.2K after | |
| Apr 11, 2023 (view filing) | Apr 10 | 1 day | Jiang WenbinPresident and CEO | SSale | −20.0K | $8.88 | −$177.6K | −0.3%7.68M after | 10b5-1 |
| Apr 20, 2023 (view filing) | Apr 19 | 1 day | Yan MingChief Technology Officer | SSale | −20.0K | $9.71 | −$194.2K | −0.3%7.89M after | 10b5-1 |
| Apr 25, 2023 (view filing) | Apr 24 | 1 day | Jeanmonod PatrikChief Financial Officer | SSale | −3.00K | $10.24 | −$30.7K | −2.7%108.2K after | 10b5-1 |
| May 10, 2023 (view filing) | May 8 | 2 days | Jiang WenbinPresident and CEO | SSale | −20.0K | $11.55 | −$231.0K | −0.3%7.66M after | 10b5-1 |
| May 19, 2023 (view filing) | May 19 | Same day | Yan MingChief Technology Officer | SSale | −20.0K | $7.19 | −$143.8K | −0.3%7.87M after | 10b5-1 |
| May 25, 2023 (view filing) | May 24 | 1 day | Jeanmonod PatrikChief Financial Officer | SSale | −3.00K | $7.76 | −$23.3K | −2.7%107.8K after | 10b5-1 |
| Jun 7, 2023 (view filing) | Jun 7 | Same day | Jiang WenbinPresident and CEO | SSale | −20.0K | $8.23 | −$164.6K | −0.3%7.65M after | 10b5-1 |
| Jun 21, 2023 (view filing) | Jun 20 | 1 day | Yan MingChief Technology Officer | SSale | −20.0K | $8.18 | −$163.6K | −0.3%7.85M after | 10b5-1 |
| Jun 27, 2023 (view filing) | Jun 26 | 1 day | Jeanmonod PatrikChief Financial Officer | SSale | −3.00K | $7.96 | −$23.9K | −2.8%104.8K after | |
| Jul 7, 2023 (view filing) | Jul 7 | Same day | Jiang WenbinPresident and CEO | SSale | −20.0K | $8.48 | −$169.6K | −0.3%7.63M after | 10b5-1 |
| Jul 20, 2023 (view filing) | Jul 19 | 1 day | Yan MingChief Technology Officer | SSale | −20.0K | $8.76 | −$175.2K | −0.3%7.83M after | 10b5-1 |
| Jul 25, 2023 (view filing) | Jul 24 | 1 day | Jeanmonod PatrikChief Financial Officer | SSale | +3.00K | $9.17 | +$27.5K | +3.0%101.8K after | 10b5-1 |
| Aug 8, 2023 (view filing) | Aug 7 | 1 day | Jiang WenbinPresident and CEO | SSale | −20.0K | $9.04 | −$180.8K | −0.3%7.61M after | |
| Aug 21, 2023 (view filing) | Aug 21 | Same day | Yan MingChief Technology Officer | SSale | −20.0K | $8.07 | −$161.4K | −0.3%7.82M after | 10b5-1 |
| Aug 28, 2023 (view filing) | Aug 24 | 4 days | Jeanmonod PatrikChief Financial Officer | SSale | −3.00K | $7.69 | −$23.1K | −2.9%102.1K after | 10b5-1 |
| Sep 8, 2023 (view filing) | Sep 7 | 1 day | Jiang WenbinPresident and CEO | SSale | −20.0K | $6.83 | −$136.6K | −0.3%7.61M after | |
| Sep 20, 2023 (view filing) | Sep 19 | 1 day | Yan MingChief Technology Officer | SSale | −20.0K | $6.49 | −$129.8K | −0.3%7.80M after | |
| Sep 26, 2023 (view filing) | Sep 25 | 1 day | Jeanmonod PatrikChief Financial Officer | SSale | −3.00K | $6.38 | −$19.1K | −2.9%99.1K after | 10b5-1 |
| Oct 11, 2023 (view filing) | Oct 9 | 2 days | Jiang WenbinPresident and CEO | SSale | −20.0K | $5.33 | −$106.6K | −0.4%5.30M after | 10b5-1 |
| Oct 23, 2023 (view filing) | Oct 19 | 4 days | Yan MingChief Technology Officer | SSale | −20.0K | $4.80 | −$96.0K | −0.3%7.78M after | |
| Oct 25, 2023 (view filing) | Oct 24 | 1 day | Jeanmonod PatrikChief Financial Officer | SSale | −3.00K | $4.68 | −$14.0K | −3.0%96.1K after | 10b5-1 |
| Nov 8, 2023 (view filing) | Nov 7 | 1 day | Jiang WenbinPresident and CEO | SSale | −20.0K | $4.34 | −$86.8K | −0.4%5.28M after | |
| Nov 21, 2023 (view filing) | Nov 20 | 1 day | Yan MingChief Technology Officer | SSale | −20.0K | $6.03 | −$120.6K | −0.3%7.76M after | |
| Nov 27, 2023 (view filing) | Nov 24 | 3 days | Jeanmonod PatrikChief Financial Officer | SSale | −3.00K | $6.94 | −$20.8K | −3.0%96.4K after | |
| Dec 21, 2023 (view filing) | Dec 19 | 2 days | Yan MingChief Technology Officer | SSale | −20.0K | $9.43 | −$188.6K | −0.3%6.04M after | |
| Dec 27, 2023 (view filing) | Dec 26 | 1 day | Jeanmonod PatrikChief Financial Officer | SSale | −3.00K | $9.50 | −$28.5K | −3.1%93.4K after | 10b5-1 |
| Mar 19, 2024 (view filing) | Mar 18-19 | 1 day | Yan MingCHIEF TECHNOLOGY OFFICER | SSale | −40.0K | $6.74 | −$269.6K | −0.7%6.01M after | 2 lots10b5-1 |
| Apr 11, 2024 (view filing) | Apr 9 | 2 days | Yan MingCHIEF TECHNOLOGY OFFICER | SSale | −1.90K | $7.00 | −$13.3K | 0.0%6.01M after | 2 lots |
| Apr 23, 2024 (view filing) | Apr 19 | 4 days | Yan MingCHIEF TECHNOLOGY OFFICER | SSale | −20.0K | $5.87 | −$117.4K | −0.3%5.99M after | 10b5-1 |
| Jun 3, 2025 (view filing) | Jun 2 | 1 day | McCombe William D.Chief Financial Officer | PPurchase | +35.0K | $2.78 | +$97.3K | +168.7%55.7K after |