CTKBCytek Biosciences, Inc.
Insider trading & SEC Form 4 activity — last 90 days. Latest filing: 2026-05-20.
Insider buys (90d)
$0.00
Insider sells (90d)
$0.00
Net flow
$0.00
Filings
7
Buy transactions
0
Sell transactions
0
Distinct insiders
7
Last close (cached)
$4.09
as of 2026-06-05
1d return
-5.5%
5d return
-2.4%
1m return
-17.2%
Top insiders trading CTKB (90d)
Recent transactions (40)
| Filed | Txn date | Insider | Code | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-20 | 2026-05-18 | Holder Michael | Exer. | 1,454 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Chin Richard | Exer. | 6,107 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Yan Ming | Tax | 2,364 | $3.55 | $8.4K | open → |
| 2026-05-20 | 2026-05-18 | Yan Ming | Exer. | 9,480 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Yan Ming | Tax | 1,025 | $3.55 | $3.6K | open → |
| 2026-05-20 | 2026-05-18 | Yan Ming | Exer. | 4,108 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Yan Ming | Tax | 919 | $3.55 | $3.3K | open → |
| 2026-05-20 | 2026-05-18 | Yan Ming | Exer. | 3,683 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Yan Ming | Tax | 1,224 | $3.55 | $4.3K | open → |
| 2026-05-20 | 2026-05-18 | Yan Ming | Exer. | 4,908 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Busque Philippe | Tax | 1,424 | $3.55 | $5.1K | open → |
| 2026-05-20 | 2026-05-18 | Busque Philippe | Exer. | 5,551 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Busque Philippe | Tax | 620 | $3.55 | $2.2K | open → |
| 2026-05-20 | 2026-05-18 | Busque Philippe | Exer. | 2,416 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Busque Philippe | Tax | 378 | $3.55 | $1.3K | open → |
| 2026-05-20 | 2026-05-18 | Busque Philippe | Exer. | 1,473 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Busque Philippe | Tax | 263 | $3.55 | $933.65 | open → |
| 2026-05-20 | 2026-05-18 | Busque Philippe | Exer. | 1,024 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Jiang Wenbin | Tax | 15,009 | $3.55 | $53.3K | open → |
| 2026-05-20 | 2026-05-18 | Jiang Wenbin | Exer. | 38,141 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Jiang Wenbin | Tax | 5,032 | $3.55 | $17.9K | open → |
| 2026-05-20 | 2026-05-18 | Jiang Wenbin | Exer. | 19,334 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Jiang Wenbin | Tax | 3,588 | $3.55 | $12.7K | open → |
| 2026-05-20 | 2026-05-18 | Jiang Wenbin | Exer. | 14,733 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Jiang Wenbin | Tax | 1,913 | $3.55 | $6.8K | open → |
| 2026-05-20 | 2026-05-18 | Jiang Wenbin | Exer. | 7,854 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | McCombe William D. | Tax | 3,839 | $3.55 | $13.6K | open → |
| 2026-05-20 | 2026-05-18 | McCombe William D. | Exer. | 10,699 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | McCombe William D. | Tax | 3,122 | $3.55 | $11.1K | open → |
| 2026-05-20 | 2026-05-18 | McCombe William D. | Exer. | 8,700 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | McCombe William D. | Tax | 2,268 | $3.55 | $8.1K | open → |
| 2026-05-20 | 2026-05-18 | McCombe William D. | Exer. | 6,320 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Barnett Valerie | Tax | 3,386 | $3.55 | $12.0K | open → |
| 2026-05-20 | 2026-05-18 | Barnett Valerie | Exer. | 9,435 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Barnett Valerie | Tax | 2,602 | $3.55 | $9.2K | open → |
| 2026-05-20 | 2026-05-18 | Barnett Valerie | Exer. | 7,250 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Barnett Valerie | Tax | 1,850 | $3.55 | $6.6K | open → |
| 2026-05-20 | 2026-05-18 | Barnett Valerie | Exer. | 5,156 | $0.00 | $0.00 | open → |
| 2026-05-20 | 2026-05-18 | Barnett Valerie | Tax | 881 | $3.55 | $3.1K | open → |
| 2026-05-20 | 2026-05-18 | Barnett Valerie | Exer. | 2,454 | $0.00 | $0.00 | open → |
Other tickers these insiders trade
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