Thomas C Chen bought $140k of NTHI
CEO at NEONC TECHNOLOGIES HOLDINGS, INC.. 36,259 shares at an average of $3.86, traded Aug 14, 2026, filed Aug 18, 2026.
Score components
- +25RoleCEO
- +11Trade size$140k at market
- +3Relative to holdingsHoldings up 7%
- +8Price context65% below the 52-week high
- +8Cluster2 insiders buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (2 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 0001213900-26-091231, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Aug 14, 2026 | POpen-market purchase Common Stock | +33,787 | $3.85 | $130k | 581,059 | Aug 18, 2026 |
| Aug 17, 2026 | POpen-market purchase Common Stock | +2,472 | $4.04 | $9,998 | 583,531 | Aug 18, 2026 |
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% | |
| 56Moderate | NEONC TECHNOLOGIES HOLDINGS, INC. | Thomas C Chen CEO | $40k 10,798 shares | +79% | |
| 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% | |
| 64Notable | NEONC TECHNOLOGIES HOLDINGS, INC. | Thomas C Chen CEO | $70k 12,757 shares | +1346% | |
| 58Moderate | NEONC TECHNOLOGIES HOLDINGS, INC. | Thomas C Chen Chief Scientific Officer | $193k 47,207 shares | - | |
| 43Moderate | NEONC TECHNOLOGIES HOLDINGS, INC. | Amir F Heshmatpour CEO, President | $50k 9,000 shares | +0% | |
| 38Weak | NEONC TECHNOLOGIES HOLDINGS, INC. | Amir F Heshmatpour CEO, President | $59k 15,000 shares | +0% | |
| 37Weak | NEONC TECHNOLOGIES HOLDINGS, INC. | Amir F Heshmatpour President | $42k 10,000 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.