CTKB
Cytek Biosciences, Inc.$5.64+0.36 (+6.91%)Prev Close$5.28·MCap$684.5M·P/E—·Vol1.18M·Yield—
▲
Buys (12M)
0
$0.00
▼
Sells (12M)
8
$277.5K
◆
Net Activity
Net Seller
$277.5K
●
Active Insiders
5
last 12 mo
Over the past 12 months, insider activity at Cytek Biosciences, Inc. (CTKB) has been exclusively selling, with 0 insider purchases totaling $0.00 and 8 insider sales totaling $277.5K. The most recent insider transaction was by Barnett Valerie (CHIEF LEGAL OFFICER), who sold $2.2K worth of shares on Feb 18, 2026. Cytek Biosciences, Inc. operates in the Healthcare sector, within the Medical - Devices industry, with a market cap of $684.5M.
CTKB Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Feb 18, 2026 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 525 | $4.20 | $2.2K | 0 |
| Feb 18, 2026 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 1,339 | $4.20 | $5.6K | 0 |
| Feb 18, 2026 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 395 | $4.20 | $1.7K | 0 |
| Nov 18, 2025 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 7,817 | $5.53 | $43.2K | 0 |
| Nov 18, 2025 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 1,885 | $5.53 | $10.4K | 0 |
| Nov 18, 2025 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 27,406 | $5.53 | $151.6K | 0 |
| Nov 18, 2025 | McCombe William D. | Chief Financial Officer | Sell | 6,228 | $5.53 | $34.4K | 0 |
| Nov 18, 2025 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 5,123 | $5.53 | $28.3K | 0 |
| Aug 18, 2025 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 8,829 | $4.06 | $35.8K | 0 |
| Aug 18, 2025 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 2,872 | $4.06 | $11.7K | 0 |
| Aug 18, 2025 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 16,959 | $4.06 | $68.9K | 0 |
| Aug 18, 2025 | McCombe William D. | Chief Financial Officer | Sell | 7,546 | $4.06 | $30.6K | 0 |
| Aug 18, 2025 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 5,738 | $4.06 | $23.3K | 0 |
| Jun 2, 2025 | McCombe William D. | Chief Financial Officer | Buy | 35,000 | $2.78 | $97.3K | 0 |
| May 19, 2025 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 6,575 | $2.69 | $17.7K | 0 |
| May 19, 2025 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 1,915 | $2.69 | $5.2K | 0 |
| May 19, 2025 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 11,855 | $2.69 | $31.9K | 0 |
| May 19, 2025 | McCombe William D. | Chief Financial Officer | Sell | 13,237 | $2.69 | $35.6K | 0 |
| May 19, 2025 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 4,356 | $2.69 | $11.7K | 0 |
| Mar 10, 2025 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 5,929 | $4.36 | $25.9K | 0 |
| Mar 10, 2025 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 1,947 | $4.36 | $8.5K | 0 |
| Mar 10, 2025 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 12,656 | $4.36 | $55.2K | 0 |
| Mar 10, 2025 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 5,096 | $4.36 | $22.2K | 0 |
| Feb 18, 2025 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 786 | $5.31 | $4.2K | 0 |
| Feb 18, 2025 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 2,004 | $5.31 | $10.6K | 0 |
| Feb 18, 2025 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 588 | $5.31 | $3.1K | 0 |
| Nov 18, 2024 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 4,499 | $6.03 | $27.1K | 0 |
| Nov 18, 2024 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 1,460 | $6.03 | $8.8K | 0 |
| Nov 18, 2024 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 9,897 | $6.03 | $59.7K | 0 |
| Nov 18, 2024 | Poirson Allen | SVP BUS. AND CORP. DEV. | Sell | 2,015 | $6.03 | $12.2K | 0 |
| Nov 18, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 3,622 | $6.03 | $21.8K | 0 |
| Aug 19, 2024 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 5,046 | $5.53 | $27.9K | 0 |
| Aug 19, 2024 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 1,460 | $5.53 | $8.1K | 0 |
| Aug 19, 2024 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 9,897 | $5.53 | $54.7K | 0 |
| Aug 19, 2024 | Poirson Allen | SVP BUS. AND CORP. DEV. | Sell | 2,015 | $5.53 | $11.1K | 0 |
| Aug 19, 2024 | Williams Paul Christopher | CHIEF OPERATING OFFICER | Sell | 4,195 | $5.53 | $23.2K | 0 |
| Aug 19, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 3,731 | $5.53 | $20.6K | 0 |
| May 20, 2024 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 3,751 | $5.96 | $22.4K | 0 |
| May 20, 2024 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 3,168 | $5.96 | $18.9K | 0 |
| May 20, 2024 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 7,102 | $5.96 | $42.3K | 0 |
| May 20, 2024 | Poirson Allen | SVP BUS. AND CORP. DEV. | Sell | 1,447 | $5.96 | $8.6K | 0 |
| May 20, 2024 | Williams Paul Christopher | CHIEF OPERATING OFFICER | Sell | 2,927 | $5.96 | $17.4K | 0 |
| May 20, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 3,137 | $5.96 | $18.7K | 0 |
| Apr 19, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 20,000 | $5.87 | $117.4K | 0 |
| Apr 9, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 1,900 | $7.00 | $13.3K | 0 |
| Mar 20, 2024 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 2,129 | $6.70 | $14.3K | 0 |
| Mar 18, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 40,000 | $6.74 | $269.6K | 0 |
| Mar 11, 2024 | Jeanmonod Patrik | CHIEF FINANCIAL OFFICER | Sell | 1,912 | $7.22 | $13.8K | 0 |
| Mar 11, 2024 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 4,646 | $7.22 | $33.5K | 0 |
| Mar 11, 2024 | Poirson Allen | SVP BUS. AND CORP. DEV. | Sell | 1,301 | $7.22 | $9.4K | 0 |
Showing 1–50 of 162
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CTKB Insider Buying Activity
The following table shows recent insider purchases of Cytek Biosciences, Inc. (CTKB) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Jun 2, 2025 | McCombe William D. | Chief Financial Officer | Buy | 35,000 | $2.78 | $97.3K | 0 |
CTKB Insider Selling Activity
The following table shows recent insider sales of Cytek Biosciences, Inc. (CTKB) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Feb 18, 2026 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 525 | $4.20 | $2.2K | 0 |
| Feb 18, 2026 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 1,339 | $4.20 | $5.6K | 0 |
| Feb 18, 2026 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 395 | $4.20 | $1.7K | 0 |
| Nov 18, 2025 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 7,817 | $5.53 | $43.2K | 0 |
| Nov 18, 2025 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 1,885 | $5.53 | $10.4K | 0 |
| Nov 18, 2025 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 27,406 | $5.53 | $151.6K | 0 |
| Nov 18, 2025 | McCombe William D. | Chief Financial Officer | Sell | 6,228 | $5.53 | $34.4K | 0 |
| Nov 18, 2025 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 5,123 | $5.53 | $28.3K | 0 |
| Aug 18, 2025 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 8,829 | $4.06 | $35.8K | 0 |
| Aug 18, 2025 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 2,872 | $4.06 | $11.7K | 0 |
| Aug 18, 2025 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 16,959 | $4.06 | $68.9K | 0 |
| Aug 18, 2025 | McCombe William D. | Chief Financial Officer | Sell | 7,546 | $4.06 | $30.6K | 0 |
| Aug 18, 2025 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 5,738 | $4.06 | $23.3K | 0 |
| May 19, 2025 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 6,575 | $2.69 | $17.7K | 0 |
| May 19, 2025 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 1,915 | $2.69 | $5.2K | 0 |
| May 19, 2025 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 11,855 | $2.69 | $31.9K | 0 |
| May 19, 2025 | McCombe William D. | Chief Financial Officer | Sell | 13,237 | $2.69 | $35.6K | 0 |
| May 19, 2025 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 4,356 | $2.69 | $11.7K | 0 |
| Mar 10, 2025 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 5,929 | $4.36 | $25.9K | 0 |
| Mar 10, 2025 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 1,947 | $4.36 | $8.5K | 0 |
| Mar 10, 2025 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 12,656 | $4.36 | $55.2K | 0 |
| Mar 10, 2025 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 5,096 | $4.36 | $22.2K | 0 |
| Feb 18, 2025 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 786 | $5.31 | $4.2K | 0 |
| Feb 18, 2025 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 2,004 | $5.31 | $10.6K | 0 |
| Feb 18, 2025 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 588 | $5.31 | $3.1K | 0 |
| Nov 18, 2024 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 4,499 | $6.03 | $27.1K | 0 |
| Nov 18, 2024 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 1,460 | $6.03 | $8.8K | 0 |
| Nov 18, 2024 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 9,897 | $6.03 | $59.7K | 0 |
| Nov 18, 2024 | Poirson Allen | SVP BUS. AND CORP. DEV. | Sell | 2,015 | $6.03 | $12.2K | 0 |
| Nov 18, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 3,622 | $6.03 | $21.8K | 0 |
| Aug 19, 2024 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 5,046 | $5.53 | $27.9K | 0 |
| Aug 19, 2024 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 1,460 | $5.53 | $8.1K | 0 |
| Aug 19, 2024 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 9,897 | $5.53 | $54.7K | 0 |
| Aug 19, 2024 | Poirson Allen | SVP BUS. AND CORP. DEV. | Sell | 2,015 | $5.53 | $11.1K | 0 |
| Aug 19, 2024 | Williams Paul Christopher | CHIEF OPERATING OFFICER | Sell | 4,195 | $5.53 | $23.2K | 0 |
| Aug 19, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 3,731 | $5.53 | $20.6K | 0 |
| May 20, 2024 | Barnett Valerie | CHIEF LEGAL OFFICER | Sell | 3,751 | $5.96 | $22.4K | 0 |
| May 20, 2024 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 3,168 | $5.96 | $18.9K | 0 |
| May 20, 2024 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 7,102 | $5.96 | $42.3K | 0 |
| May 20, 2024 | Poirson Allen | SVP BUS. AND CORP. DEV. | Sell | 1,447 | $5.96 | $8.6K | 0 |
| May 20, 2024 | Williams Paul Christopher | CHIEF OPERATING OFFICER | Sell | 2,927 | $5.96 | $17.4K | 0 |
| May 20, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 3,137 | $5.96 | $18.7K | 0 |
| Apr 19, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 20,000 | $5.87 | $117.4K | 0 |
| Apr 9, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 1,900 | $7.00 | $13.3K | 0 |
| Mar 20, 2024 | Busque Philippe | SVP, GLOBAL SALES AND SERVICES | Sell | 2,129 | $6.70 | $14.3K | 0 |
| Mar 18, 2024 | Yan Ming | CHIEF TECHNOLOGY OFFICER | Sell | 40,000 | $6.74 | $269.6K | 0 |
| Mar 11, 2024 | Jeanmonod Patrik | CHIEF FINANCIAL OFFICER | Sell | 1,912 | $7.22 | $13.8K | 0 |
| Mar 11, 2024 | Jiang Wenbin | PRESIDENT AND CEO | Sell | 4,646 | $7.22 | $33.5K | 0 |
| Mar 11, 2024 | Poirson Allen | SVP BUS. AND CORP. DEV. | Sell | 1,301 | $7.22 | $9.4K | 0 |
CTKB Insiders
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