Wenbin Jiang is CEO & President at Cytek Biosciences, Inc. (CTKB). They have made 17 open-market trades across 1 company since 2022, most recently 2026-08-18.
CIK 0001872873
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 17 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CTKB | 5,561,029 | $29.3M |
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 | 2023-11-07 | 2023-11-08 | $4.34 | $87K | +21.4% | +52.9% | +58.5% |
| CTKB | SELL · 10b5-1 | 2023-10-09 | 2023-10-11 | $5.33 | $107K | -12.5% | -7.2% | +60.0% |
| CTKB | SELL | 2023-09-07 | 2023-09-08 | $6.83 | $137K | -8.0% | -21.9% | +11.3% |
| CTKB | SELL | 2023-08-07 | 2023-08-08 | $9.04 | $362K | -4.9% | -22.8% | -51.0% |
| CTKB | SELL · 10b5-1 | 2023-07-07 | 2023-07-07 | $8.48 | $170K | +4.0% | +8.5% | -35.6% |
| CTKB | SELL · 10b5-1 | 2023-06-07 | 2023-06-07 | $8.23 | $165K | +1.7% | +3.5% | -14.5% |
| CTKB | SELL · 10b5-1 | 2023-05-08 | 2023-05-10 | $11.55 | $231K | -11.0% | -8.4% | +0.9% |
| CTKB | SELL · 10b5-1 | 2023-04-10 | 2023-04-11 | $8.88 | $355K | +4.4% | -16.0% | -8.4% |
| CTKB | SELL | 2023-03-07 | 2023-03-07 | $10.13 | $405K | -5.9% | -11.1% | -21.8% |
| CTKB | SELL | 2023-02-07 | 2023-02-08 | $13.19 | $264K | -15.8% | -30.1% | -10.4% |
| CTKB | SELL | 2023-01-09 | 2023-01-10 | $10.66 | $213K | +2.1% | +18.8% | -16.2% |
| CTKB | SELL | 2022-12-07 | 2022-12-09 | $11.86 | $237K | -7.3% | -6.2% | -16.8% |
| CTKB | SELL | 2022-11-07 | 2022-11-08 | $14.76 | $295K | +3.4% | -16.9% | -7.5% |
| CTKB | SELL | 2022-10-07 | 2022-10-11 | $14.79 | $296K | +9.3% | +4.8% | -23.2% |
| CTKB | SELL | 2022-09-07 | 2022-09-09 | $12.89 | $258K | -8.5% | -1.2% | -16.1% |
| CTKB | SELL | 2022-08-08 | 2022-08-10 | $15.09 | $302K | -16.6% | -10.5% | -7.9% |
| CTKB | SELL | 2022-07-07 | 2022-07-08 | $11.19 | $224K | +6.9% | +34.1% | +36.8% |
| CTKB | SELL | 2022-06-07 | 2022-06-09 | $10.75 | $215K | -2.5% | +6.5% | +23.1% |
| CTKB | SELL | 2022-05-09 | 2022-05-12 | $8.01 | $160K | +16.4% | +17.7% | +84.6% |
| CTKB | SELL | 2022-04-07 | 2022-04-08 | $10.54 | $422K | -2.9% | -22.6% | +11.7% |
| CTKB | SELL | 2022-03-07 | 2022-03-08 | $12.65 | $253K | -7.9% | -19.5% | -18.9% |
| CTKB | SELL | 2022-02-07 | 2022-02-09 | $14.40 | $288K | -6.7% | -13.9% | -44.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.