William D. McCombe bought $97k of CTKB
Chief Financial Officer at Cytek Biosciences, Inc.. 35,000 shares at an average of $2.78, traded Jun 2, 2025, filed Jun 3, 2025.
Score components
- +22RoleCFO
- +10Trade size$97k at market
- +10Relative to holdingsHoldings up 169%
- 0Price contextNo price history yet
- 0ClusterNo other insider buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m +31.9%, 3m +41.1%, 6m +89.1%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001415889-25-015442, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Jun 2, 2025 | POpen-market purchase Common Stock | +35,000 | $2.78 | $97k | 55,746 | Jun 3, 2025 |
Related signals
Other insiders at Cytek Biosciences, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 8Weak | Cytek Biosciences, Inc. | Ming Yan CHIEF TECHNOLOGY OFFICER | $270k 40,000 shares | -1% | |
| 15Weak | Cytek Biosciences, Inc. | Patrik Jeanmonod Chief Financial Officer | $29k 3,000 shares | -3% | |
| 15Weak | Cytek Biosciences, Inc. | Ming Yan Chief Technology Officer | $189k 20,000 shares | -0% | |
| 10Weak | Cytek Biosciences, Inc. | Patrik Jeanmonod Chief Financial Officer | $21k 3,000 shares | -3% | |
| 5Weak | Cytek Biosciences, Inc. | Ming Yan Chief Technology Officer | $121k 20,000 shares | -0% | |
| 29Weak | Cytek Biosciences, Inc. | Wenbin Jiang President and CEO | $87k 20,000 shares | -0% | |
| 17Weak | Cytek Biosciences, Inc. | Patrik Jeanmonod Chief Financial Officer | $14k 3,000 shares | -3% | |
| 20Weak | Cytek Biosciences, Inc. | Ming Yan Chief Technology Officer | $96k 20,000 shares | -0% | |
| 23Weak | Cytek Biosciences, Inc. | Wenbin Jiang President and CEO | $107k 20,000 shares | -0% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.