CTKB
Cytek Biosciences, Inc.
NASDAQ · Healthcare · Medical - Devices · US
$4.70
+0.00%0
Insider buys (3m)
0
Insider sells (3m)
$0.00
Net value (3m)
+13.8%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 20, 2026 | Jiang Wenbin · director, officer: PRESIDENT AND CEO | M-Exempt | 11,781 | $0.00 |
| Aug 20, 2026 | Jiang Wenbin · director, officer: PRESIDENT AND CEO | M-Exempt | 57,212 | $0.00 |
| Aug 20, 2026 | McCombe William D. · officer: Chief Financial Officer | F-InKind | 2,111 | $4.67 |
| Aug 20, 2026 | Jiang Wenbin · director, officer: PRESIDENT AND CEO | F-InKind | 20,956 | $4.67 |
| Aug 20, 2026 | Yan Ming · director, officer: CHIEF TECHNOLOGY OFFICER | M-Exempt | 7,363 | $0.00 |
| Aug 20, 2026 | Holder Michael · director | M-Exempt | 2,181 | $0.00 |
| Aug 20, 2026 | McCombe William D. · officer: Chief Financial Officer | F-InKind | 4,392 | $4.67 |
| Aug 20, 2026 | Jiang Wenbin · director, officer: PRESIDENT AND CEO | M-Exempt | 22,100 | $0.00 |
| Aug 20, 2026 | Yan Ming · director, officer: CHIEF TECHNOLOGY OFFICER | F-InKind | 3,463 | $4.67 |
| Aug 20, 2026 | Jiang Wenbin · director, officer: PRESIDENT AND CEO | F-InKind | 7,062 | $4.67 |
| Aug 20, 2026 | McCombe William D. · officer: Chief Financial Officer | M-Exempt | 13,051 | $0.00 |
| Aug 20, 2026 | Jiang Wenbin · director, officer: PRESIDENT AND CEO | F-InKind | 5,382 | $4.67 |
| Aug 20, 2026 | Yan Ming · director, officer: CHIEF TECHNOLOGY OFFICER | F-InKind | 1,501 | $4.67 |
| Aug 20, 2026 | Yan Ming · director, officer: CHIEF TECHNOLOGY OFFICER | F-InKind | 1,346 | $4.67 |
| Aug 20, 2026 | Yan Ming · director, officer: CHIEF TECHNOLOGY OFFICER | F-InKind | 1,778 | $4.67 |
| Aug 20, 2026 | McCombe William D. · officer: Chief Financial Officer | M-Exempt | 16,049 | $0.00 |
| Aug 20, 2026 | Chin Richard · director | M-Exempt | 6,107 | $0.00 |
| Aug 20, 2026 | Yan Ming · director, officer: CHIEF TECHNOLOGY OFFICER | M-Exempt | 5,525 | $0.00 |
| Aug 20, 2026 | MUIR GLENN P · director | M-Exempt | 3,086 | $0.00 |
| Aug 20, 2026 | McCombe William D. · officer: Chief Financial Officer | M-Exempt | 6,320 | $0.00 |
| Aug 20, 2026 | Jiang Wenbin · director, officer: PRESIDENT AND CEO | M-Exempt | 29,002 | $0.00 |
| Aug 20, 2026 | Jiang Wenbin · director, officer: PRESIDENT AND CEO | F-InKind | 2,869 | $4.67 |
| Aug 20, 2026 | Yan Ming · director, officer: CHIEF TECHNOLOGY OFFICER | M-Exempt | 14,220 | $0.00 |
| Aug 20, 2026 | McCombe William D. · officer: Chief Financial Officer | F-InKind | 5,401 | $4.67 |
| Aug 20, 2026 | Yan Ming · director, officer: CHIEF TECHNOLOGY OFFICER | M-Exempt | 6,162 | $0.00 |
| Aug 12, 2026 | Feuchtwang Ilan · officer: Chief Legal Officer, Secretary | A-Award | 241,416 | $0.00 |
| Aug 12, 2026 | Feuchtwang Ilan · officer: Chief Legal Officer, Secretary | A-Award | 127,118 | $4.66 |
| Jun 12, 2026 | NEFF DEBORAH J · director | A-Award | 33,333 | $0.00 |
| Jun 12, 2026 | Imper Vera · director | A-Award | 18,261 | $4.05 |
| Jun 12, 2026 | Imper Vera · director | M-Exempt | 43,973 | $0.00 |
Institutional positioning
13F filings over the trailing two quarters
New 53Increased 112Reduced 119Sold out 37
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Reduced | 17,007,269 | May 13, 2026 |
| BlackRock, Inc. | Reduced | 9,578,643 | Aug 7, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 9,338,010 | Aug 14, 2026 |
| Boston Partners | Increased | 7,660,943 | Aug 4, 2026 |
| TOPLINE CAPITAL MANAGEMENT, LLC | Reduced | 7,064,481 | May 15, 2026 |
| HHLR ADVISORS, LTD. | Unchanged | 6,657,030 | May 15, 2026 |
| HHLR ADVISORS, LTD. | Unchanged | 6,657,030 | Aug 14, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 6,291,798 | May 15, 2026 |
| Topline Capital Management, LLC | Reduced | 6,283,450 | Aug 14, 2026 |
| BOSTON PARTNERS | Increased | 5,802,773 | May 11, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 4,939,597 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 4,762,904 | May 15, 2026 |
| STATE STREET CORP | Reduced | 4,123,748 | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 3,059,573 | Aug 12, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 2,833,955 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 20, 2026