Ming Yan is CTO at Cytek Biosciences, Inc. (CTKB). They have made 19 open-market trades across 1 company since 2022, most recently 2026-08-18.
CIK 0001874041
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 19 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CTKB | 4,821,870 | $25.4M |
Shares reported on the most recent Form 4, priced at the 2026-08-20 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CTKB | SELL · 10b5-1 | 2024-04-19 | 2024-04-23 | $5.87 | $117K | +7.6% | +2.4% | +10.4% |
| CTKB | SELL · 10b5-1 | 2024-04-09 | 2024-04-11 | $7.00 | $13K | -6.7% | -0.8% | -10.3% |
| CTKB | SELL · 10b5-1 | 2024-03-18 | 2024-03-19 | $6.74 | $270K | +0.0% | -11.0% | -15.2% |
| CTKB | SELL | 2023-12-19 | 2023-12-21 | $9.43 | $189K | -11.8% | -6.8% | -27.6% |
| CTKB | SELL | 2023-11-20 | 2023-11-21 | $6.03 | $121K | +17.6% | +47.3% | +33.9% |
| CTKB | SELL | 2023-10-19 | 2023-10-23 | $4.80 | $96K | -5.7% | +47.3% | +89.5% |
| CTKB | SELL | 2023-09-19 | 2023-09-20 | $6.49 | $130K | -14.0% | -25.8% | +51.3% |
| CTKB | SELL · 10b5-1 | 2023-08-21 | 2023-08-21 | $8.07 | $161K | -6.1% | -21.8% | -24.8% |
| CTKB | SELL · 10b5-1 | 2023-07-19 | 2023-07-20 | $8.76 | $175K | -0.1% | -9.8% | -45.7% |
| CTKB | SELL · 10b5-1 | 2023-06-20 | 2023-06-21 | $8.18 | $164K | -0.7% | +6.8% | -22.9% |
| CTKB | SELL · 10b5-1 | 2023-05-19 | 2023-05-19 | $7.19 | $144K | +15.7% | +17.8% | +20.1% |
| CTKB | SELL · 10b5-1 | 2023-04-19 | 2023-04-20 | $9.71 | $388K | +20.3% | -17.2% | -7.6% |
| CTKB | SELL | 2023-03-20 | 2023-03-21 | $9.29 | $372K | -1.3% | +2.4% | -10.4% |
| CTKB | SELL | 2023-02-21 | 2023-02-23 | $10.94 | $219K | -8.7% | -21.8% | -27.7% |
| CTKB | SELL · 10b5-1 | 2023-02-08 | 2023-02-10 | $13.53 | $12K | -13.2% | -26.1% | -36.4% |
| CTKB | SELL · 10b5-1 | 2023-02-03 | 2023-02-07 | $13.50 | $15K | -13.6% | -29.8% | -13.2% |
| CTKB | SELL | 2023-01-19 | 2023-01-20 | $11.03 | $221K | +12.2% | +0.2% | -13.0% |
| CTKB | SELL | 2022-12-19 | 2022-12-20 | $10.38 | $415K | -1.2% | +7.5% | -10.6% |
| CTKB | SELL | 2022-11-21 | 2022-11-22 | $14.66 | $293K | -14.9% | -29.0% | -24.3% |
| CTKB | SELL | 2022-10-19 | 2022-10-20 | $14.42 | $288K | +2.5% | -2.4% | -21.9% |
| CTKB | SELL | 2022-09-19 | 2022-09-20 | $12.42 | $248K | +12.2% | +14.0% | -20.6% |
| CTKB | SELL | 2022-08-19 | 2022-08-19 | $13.62 | $272K | -14.1% | -6.9% | +5.2% |
| CTKB | SELL | 2022-07-19 | 2022-07-20 | $11.83 | $237K | +7.5% | +14.8% | +23.4% |
| CTKB | SELL | 2022-06-21 | 2022-06-22 | $10.06 | $201K | +5.5% | +15.4% | +25.6% |
| CTKB | SELL | 2022-05-19 | 2022-05-20 | $9.92 | $198K | +17.3% | +3.0% | +45.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.