CTKB
Cytek Biosciences Inc
NASDAQ: CTKB · HEALTHCARE · MEDICAL DEVICES
$4.56
+2.70% today
Updated 2026-04-30
Market cap
$565.62M
P/E ratio
—
P/S ratio
2.81x
EPS (TTM)
$-0.52
Dividend yield
—
52W range
$2 – $6
Volume
0.7M
Cytek Biosciences Inc (CTKB) Insider transactions
Net insider activity
Net buying (1,422,354 shares)
Buy transactions
41
Sell transactions
59
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-13 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 1,176,000 | — | — |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Buy | 227,535 | — | — |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 9,817 | — | — |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 8,217 | — | — |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 7,366 | — | — |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Buy | 120,688 | — | — |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Buy | 9,817 | — | — |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Buy | 8,217 | — | — |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Buy | 7,366 | — | — |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 3,047 | $4.23 | $12888.81 |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 2,397 | $4.23 | $10139.31 |
| 2026-03-10 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 2,287 | $4.23 | $9674.01 |
| 2026-03-10 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Buy | 256,790 | — | — |
| 2026-03-10 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Sale | 17,401 | — | — |
| 2026-03-10 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Sale | 6,320 | — | — |
| 2026-03-10 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Buy | 136,205 | — | — |
| 2026-03-10 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Buy | 17,401 | — | — |
| 2026-03-10 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Sale | 7,145 | $4.23 | $30223.35 |
| 2026-03-10 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Buy | 6,320 | — | — |
| 2026-03-10 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Sale | 2,603 | $4.23 | $11010.69 |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Buy | 915,407 | — | — |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 38,669 | — | — |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 29,467 | — | — |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 15,708 | — | — |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Buy | 485,545 | — | — |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Buy | 38,669 | — | — |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Buy | 29,467 | — | — |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Buy | 15,708 | — | — |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 9,416 | $4.23 | $39829.68 |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 7,747 | $4.23 | $32769.81 |
| 2026-03-10 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 3,825 | $4.23 | $16179.75 |
| 2026-03-10 | HOLDER, MICHAEL | Director | Sale | 2,908 | — | — |
| 2026-03-10 | HOLDER, MICHAEL | Director | Buy | 2,908 | — | — |
| 2026-03-10 | CHIN, RICHARD | Director | Sale | 6,107 | — | — |
| 2026-03-10 | CHIN, RICHARD | Director | Buy | 6,107 | — | — |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Buy | 133,226 | — | — |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Sale | 4,833 | — | — |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Sale | 2,946 | — | — |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Sale | 2,049 | — | — |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Buy | 70,665 | — | — |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Buy | 4,833 | — | — |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Buy | 2,946 | — | — |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Buy | 2,049 | — | — |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Sale | 1,496 | $4.23 | $6328.08 |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Sale | 912 | $4.23 | $3857.76 |
| 2026-03-10 | BUSQUE, PHILIPPE | SVP, GLOBAL SALES AND SERVICES | Sale | 635 | $4.23 | $2686.05 |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Buy | 226,453 | — | — |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Sale | 14,501 | — | — |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Sale | 10,313 | — | — |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Sale | 4,908 | — | — |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Buy | 120,114 | — | — |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Buy | 14,501 | — | — |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Buy | 10,313 | — | — |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Sale | 5,740 | $4.23 | $24280.20 |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Buy | 4,908 | — | — |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Sale | 4,247 | $4.23 | $17964.81 |
| 2026-03-10 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Sale | 1,761 | $4.23 | $7449.03 |
| 2026-02-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 1,332 | — | — |
| 2026-02-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Buy | 1,332 | — | — |
| 2026-02-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 395 | $4.20 | $1659.00 |
| 2026-02-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 4,514 | — | — |
| 2026-02-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Buy | 4,514 | — | — |
| 2026-02-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 1,339 | $4.20 | $5623.80 |
| 2026-02-18 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Sale | 1,346 | — | — |
| 2026-02-18 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Buy | 1,346 | — | — |
| 2026-02-18 | BARNETT, VALERIE | CHIEF LEGAL OFFICER | Sale | 525 | $4.20 | $2205.00 |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 7,363 | — | — |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 6,162 | — | — |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 5,525 | — | — |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 1,981 | — | — |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Buy | 7,363 | — | — |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Buy | 6,162 | — | — |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Buy | 5,525 | — | — |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Buy | 1,981 | — | — |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 1,793 | $5.53 | $9915.29 |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 1,501 | $5.53 | $8300.53 |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 1,346 | $5.53 | $7443.38 |
| 2025-11-18 | YAN, MING | Director, CHIEF TECHNOLOGY OFFICER | Sale | 483 | $5.53 | $2670.99 |
| 2025-11-18 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Sale | 13,051 | — | — |
| 2025-11-18 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Sale | 6,320 | — | — |
| 2025-11-18 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Buy | 13,051 | — | — |
| 2025-11-18 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Buy | 6,320 | — | — |
| 2025-11-18 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Sale | 4,196 | $5.53 | $23203.88 |
| 2025-11-18 | MCCOMBE, WILLIAM D. | Chief Financial Officer | Sale | 2,032 | $5.53 | $11236.96 |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 29,002 | — | — |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 22,100 | — | — |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 11,781 | — | — |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 6,758 | — | — |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Buy | 29,002 | — | — |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Buy | 22,100 | — | — |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Buy | 11,781 | — | — |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 11,413 | $5.53 | $63113.89 |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 8,697 | $5.53 | $48094.41 |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Buy | 6,758 | — | — |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 4,636 | $5.53 | $25637.08 |
| 2025-11-18 | JIANG, WENBIN | Director, PRESIDENT AND CEO | Sale | 2,660 | $5.53 | $14709.80 |
| 2025-11-18 | HOLDER, MICHAEL | Director | Sale | 2,181 | — | — |
| 2025-11-18 | HOLDER, MICHAEL | Director | Buy | 2,181 | — | — |
| 2025-11-18 | CHIN, RICHARD | Director | Sale | 6,107 | — | — |
| 2025-11-18 | CHIN, RICHARD | Director | Buy | 6,107 | — | — |