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buyModerate cluster of 4

Thomas C Chen bought $193k of NTHI

Chief Scientific Officer at NEONC TECHNOLOGIES HOLDINGS, INC.. 47,207 shares at an average of $4.09, traded Apr 10, 2026, filed Aug 20, 2026.

Conviction score
58
Value
$193k
47,207 shares
Holdings after
583,531
change unknown
From 52-week low
+62%
low $3.35, close $5.44
From 52-week high
-55%
high $12.09, as of Apr 10, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $193k at market
    +12
  • Relative to holdings
    First purchase: no shares before this trade
    +8
  • Price context
    55% below the 52-week high
    +8
  • Cluster
    4 insiders buying within 14 days
    +15
  • Repeat buying
    First buy in 90 days
    0
  • Track record
    Too few past buys to judge (2 with prices)
    0

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.

NTHIOct 12, 2026 · close 2.73
Since filing Aug 20, 2026: -40.1%SPY +2.3% · excess -42.4%

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 0001213900-26-092276, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Apr 10, 2026POpen-market purchase
Common Stockindirect: By IRA
+948$5.17$4,899948Aug 20, 2026
Apr 24, 2026POpen-market purchase
Common Stockindirect: By Defined Benefit Plan
+10,000$4.80$48k10,000Aug 20, 2026
Aug 14, 2026POpen-market purchase
Common Stock
+33,787$3.85$130k581,059Aug 20, 2026
Aug 17, 2026POpen-market purchase
Common Stock
+2,472$4.04$9,998583,531Aug 20, 2026

Related signals

Other insiders at NEONC TECHNOLOGIES HOLDINGS, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
2Weak
NTHIsell10b5-1
NEONC TECHNOLOGIES HOLDINGS, INC.
Keithly Garnett
CFO
$17k
5,000 shares
-2%
56Moderate
NTHIbuy 3
NEONC TECHNOLOGIES HOLDINGS, INC.
Thomas C Chen
CEO
$40k
10,798 shares
+79%
32Weak
NTHIbuy 3
NEONC TECHNOLOGIES HOLDINGS, INC.
Keithly Garnett
CFO
$1,001
257 shares
+0%
56Moderate
NTHIbuy 3
NEONC TECHNOLOGIES HOLDINGS, INC.
Amir F Heshmatpour
CEO, President
$175k
50,000 shares
+2%
51Moderate
NTHIbuy 3
NEONC TECHNOLOGIES HOLDINGS, INC.
Amir F Heshmatpour
CEO, President
$136k
37,000 shares
+1%
64Notable
NTHIbuy 2
NEONC TECHNOLOGIES HOLDINGS, INC.
Thomas C Chen
CEO
$70k
12,757 shares
+1346%
55Moderate
NTHIbuy 2
NEONC TECHNOLOGIES HOLDINGS, INC.
Thomas C Chen
CEO
$140k
36,259 shares
+7%
43Moderate
NTHIbuy 2
NEONC TECHNOLOGIES HOLDINGS, INC.
Amir F Heshmatpour
CEO, President
$50k
9,000 shares
+0%
38Weak
NTHIbuy 2
NEONC TECHNOLOGIES HOLDINGS, INC.
Amir F Heshmatpour
CEO, President
$59k
15,000 shares
+0%
37Weak
NTHIbuy 2
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.

Thomas C Chen bought $193k of NTHI | InsiderTell