Cytek Biosciences, Inc.
Total Trades
86
Buys
8
Sells
69
Largest Trade
N/A
Insiders
6
Institutional Funds
124
Inst. Value
$1M+
Activist Filings
28
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Ball Jack | Director | EXERCISE | $1K–$15K | 16K | $0.40 | Nov 16, 2022 |
| Ball Jack | Director | SELL | $100K–$500K | 16K | $14.69 | Nov 16, 2022 |
| Jiang Wenbin | President and CEO | SELL | $100K–$500K | 20K | $14.76 | Nov 8, 2022 |
| Jeanmonod Patrik | CFO | SELL | $50K–$100K | 4K | $15.16 | Oct 25, 2022 |
| Yan Ming | CTO | SELL | $100K–$500K | 20K | $14.42 | Oct 20, 2022 |
| Jiang Wenbin | President and CEO | SELL | $100K–$500K | 20K | $14.79 | Oct 11, 2022 |
| Jeanmonod Patrik | CFO | SELL | $15K–$50K | 4K | $12.63 | Sep 28, 2022 |
| Yan Ming | CTO | SELL | $100K–$500K | 20K | $12.42 | Sep 20, 2022 |
| Jiang Wenbin | President and CEO | SELL | $100K–$500K | 20K | $12.89 | Sep 10, 2022 |
| Jeanmonod Patrik | CFO | SELL | $15K–$50K | 4K | $13.45 | Aug 25, 2022 |
| Yan Ming | CTO | SELL | $100K–$500K | 20K | $13.62 | Aug 19, 2022 |
| Yan Ming | CTO | EXERCISE | N/A | 2K | — | Aug 19, 2022 |
| Jiang Wenbin | President and CEO | SELL | $100K–$500K | 20K | $15.09 | Aug 10, 2022 |
| Jeanmonod Patrik | CFO | SELL | $15K–$50K | 4K | $12.80 | Aug 3, 2022 |
| Yan Ming | CTO | SELL | $100K–$500K | 20K | $11.83 | Jul 20, 2022 |
| Jiang Wenbin | President and CEO | SELL | $100K–$500K | 20K | $11.19 | Jul 8, 2022 |
| Yan Ming | CTO | SELL | $100K–$500K | 20K | $10.06 | Jun 22, 2022 |
| Jiang Wenbin | President and CEO | SELL | $100K–$500K | 20K | $10.75 | Jun 10, 2022 |
| Yan Ming | CTO | EXERCISE | N/A | 3K | — | May 20, 2022 |
| Yan Ming | CTO | SELL | $100K–$500K | 20K | $9.92 | May 20, 2022 |
| Jiang Wenbin | President and CEO | SELL | $100K–$500K | 20K | $8.01 | May 12, 2022 |
| Yan Ming | CTO | SELL | $100K–$500K | 20K | $10.34 | Apr 22, 2022 |
| Jiang Wenbin | President and CEO | SELL | $100K–$500K | 20K | $10.54 | Apr 8, 2022 |
| Yan Ming | CTO | SELL | $100K–$500K | 20K | $11.64 | Mar 23, 2022 |
| RA CAPITAL MANAGEMENT, L.P. | Director | BUY | $1M+ | 584K | $12.31 | Mar 16, 2022 |
| RA CAPITAL MANAGEMENT, L.P. | Director | BUY | $1M+ | 635K | $12.86 | Mar 11, 2022 |
| Jiang Wenbin | President and CEO | EXERCISE | $15K–$50K | 67K | $0.25 | Mar 8, 2022 |
| Jiang Wenbin | President and CEO | SELL | $100K–$500K | 20K | $12.65 | Mar 8, 2022 |
| RA CAPITAL MANAGEMENT, L.P. | Director | BUY | $1M+ | 647K | $12.74 | Mar 8, 2022 |
| RA CAPITAL MANAGEMENT, L.P. | Director | BUY | $1M+ | 442K | $12.95 | Mar 2, 2022 |
| RA CAPITAL MANAGEMENT, L.P. | Director | BUY | $1M+ | 420K | $13.23 | Feb 25, 2022 |
| Yan Ming | CTO | SELL | $100K–$500K | 20K | $13.44 | Feb 24, 2022 |
| RA CAPITAL MANAGEMENT, L.P. | Director | BUY | $1M+ | 547K | $14.06 | Feb 22, 2022 |
| RA CAPITAL MANAGEMENT, L.P. | Director | BUY | $1M+ | 499K | $14.89 | Feb 17, 2022 |
| Yan Ming | CTO | SELL | $100K–$500K | 20K | $15.11 | Feb 14, 2022 |
| Jiang Wenbin | President and CEO | SELL | $100K–$500K | 20K | $14.40 | Feb 9, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 124 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| VANGUARD GROUP INC | 6.7M | $1M+ | SH |
| HHLR ADVISORS, LTD. | 6.7M | $1M+ | SH |
| Boston Partners | 5.0M | $1M+ | SH |
| STATE STREET CORP | 4.1M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 2.5M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 2.4M | $1M+ | SH |
| BROWN CAPITAL MANAGEMENT LLC | 2.1M | $1M+ | SH |
| ROYCE & ASSOCIATES LP | 1.7M | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.1M | $1M+ | SH |
| M&T BANK CORP | 41K | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 675K | $1M+ | SH |
| ACADIAN ASSET MANAGEMENT LLC | 674K | $1M+ | SH |
| HRT FINANCIAL LP | 438K | $1M+ | SH |
| PUBLIC SECTOR PENSION INVESTMENT BOARD | 379K | $1M+ | SH |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 362K | $1M+ | SH |
| Bank of New York Mellon Corp | 304K | $1M+ | SH |
| Simcoe Capital LLC | 298K | $1M+ | SH |
| Connor, Clark & Lunn Investment Management Ltd. | 296K | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 285K | $1M+ | SH |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 264K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Topline Capital Management, LLC
SC 13G · Nov 17, 2025
5.3%
6.8M shares
SC 13G/A · Nov 12, 2025
3.9%
5.0M shares
SC 13G/A · Jul 29, 2025
6.1%
7.8M shares
SC 13G/A · Jul 18, 2025
13.1%
16.5M shares
SC 13G/A · May 15, 2025
5.9%
7.5M shares
SC 13G/A · Apr 30, 2025
7.5%
9.6M shares
SC 13G/A · Feb 14, 2025
0.0%
0 shares
SC 13G/A · Feb 5, 2025
14.3%
18.5M shares
Hillhouse Investment Management, Ltd.
SC 13G · Nov 14, 2024
5.1%
6.7M shares
SC 13G/A · Nov 14, 2024
7.2%
9.5M shares
SC 13G · Feb 23, 2024
5.2%
6.8M shares
SC 13G/A · Feb 14, 2024
4.9%
6.7M shares
SC 13G/A · Feb 14, 2024
4.7%
6.2M shares
SC 13G/A · Feb 14, 2024
4.3%
5.7M shares
SC 13G · Feb 14, 2024
8.9%
12.0M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
8.8%
11.9M shares
SC 13G/A · Jan 23, 2024
13.1%
17.8M shares
SC 13D/A · Sep 19, 2023
5.0%
6.8M shares
SC 13G/A · May 5, 2023
10.9%
14.8M shares
SC 13G/A · Feb 14, 2023
6.4%
8.7M shares
SC 13G · Feb 3, 2023
6.2%
8.4M shares
SC 13G/A · Aug 3, 2022
4.2%
5.7M shares
SC 13D/A · Mar 14, 2022
9.8%
13.1M shares
SC 13D/A · Feb 28, 2022
8.3%
11.1M shares
SC 13G · Feb 16, 2022
7.2%
9.7M shares
SC 13G · Feb 14, 2022
6.5%
8.8M shares
SC 13G · Feb 14, 2022
6.0%
8.0M shares
SC 13G · Feb 14, 2022
6.1%
8.2M shares