Thomas C Chen bought $40k of NTHI
CEO at NEONC TECHNOLOGIES HOLDINGS, INC.. 10,798 shares at an average of $3.70, traded Sep 11, 2026, filed Sep 15, 2026.
Score components
- +25RoleCEO
- +6Trade size$40k at market
- +10Relative to holdingsHoldings up 79%
- 0Price contextNo price history yet
- +15Cluster3 insiders 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.
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 0001213900-26-100266, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 11, 2026 | POpen-market purchase Common Stockindirect: By IRA | +5,556 | $3.60 | $20k | 19,261 | 27 d ago |
| Sep 14, 2026 | POpen-market purchase Common Stockindirect: By IRA | +5,242 | $3.82 | $20k | 24,503 | 27 d ago |
Related signals
Other insiders at NEONC TECHNOLOGIES HOLDINGS, INC. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 2Weak | NEONC TECHNOLOGIES HOLDINGS, INC. | Keithly Garnett CFO | $17k 5,000 shares | -2% | |
| 32Weak | NEONC TECHNOLOGIES HOLDINGS, INC. | Keithly Garnett CFO | $1,001 257 shares | +0% | |
| 56Moderate | NEONC TECHNOLOGIES HOLDINGS, INC. | Amir F Heshmatpour CEO, President | $175k 50,000 shares | +2% | |
| 51Moderate | NEONC TECHNOLOGIES HOLDINGS, INC. | Amir F Heshmatpour CEO, President | $136k 37,000 shares | +1% | |
| 70Notable | NEONC TECHNOLOGIES HOLDINGS, INC. | Thomas C Chen CEO | $975k 39,233 shares | -13% | |
| 60Notable | NEONC TECHNOLOGIES HOLDINGS, INC. | Ming-Fu (alan) Chiang director | $1.4M 57,696 shares | -13% | |
| 53Moderate | NEONC TECHNOLOGIES HOLDINGS, INC. | Keithly Garnett CFO | $164k 6,616 shares | -13% | |
| 59Moderate | NEONC TECHNOLOGIES HOLDINGS, INC. | Amir F Heshmatpour President | $956k 38,464 shares | -13% | |
| 54Moderate | NEONC TECHNOLOGIES HOLDINGS, INC. | Patrick Walters COO | $294k 11,847 shares | -13% | |
| 59Moderate | NEONC TECHNOLOGIES HOLDINGS, INC. | Thomas C Chen CEO | $40k 5,468 shares | +1% |
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.