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sellWeak10b5-1 plan

George Kemble sold $3.6M of SGMT

Executive Chairman at Sagimet Biosciences Inc.. 350,987 shares at an average of $10.23, traded Aug 14, 2026, filed Aug 17, 2026.

Warning score
25
Value
$3.6M
350,987 shares
Holdings after
62,161
-85% from before
From 52-week low
+132%
low $4.55, close $10.55
From 52-week high
0%
high $10.55, as of Aug 14, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $3.6M at market
    +25
  • Share of holdings sold
    Sold 85% of holdings
    +20
  • Cluster
    No other insider selling within 14 days
    0
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

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.

SGMTOct 9, 2026 · close 8.93
Since filing Aug 17, 2026: -14.4%SPY +1.0% · excess -15.3%

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 0001193125-26-354018, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 14, 2026MOption exercise
Series A Common Stock10b5-1
+326,618$6.36$2.1M388,779Aug 17, 2026
Aug 14, 2026MOption exercise
Series A Common Stock10b5-1
+24,369$6.36$155k413,148Aug 17, 2026
Aug 14, 2026SOpen-market sale
Series A Common Stock10b5-1
-350,987$10.23$3.6M62,161Aug 17, 2026
Aug 14, 2026MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-326,618$0.00$031,455Aug 17, 2026
Aug 14, 2026MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-24,369$0.00$011,608Aug 17, 2026

Related signals

Other insiders at Sagimet Biosciences Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
0Weak
SGMTsell10b5-1
Sagimet Biosciences Inc.
George Kemble
Executive Chairman
$201k
20,206 shares
-25%
58Moderate
SGMTsell 3
Sagimet Biosciences Inc.
David Happel
President & CEO
$497k
64,051 shares
-8%
26Weak
SGMTsell 310b5-1
Sagimet Biosciences Inc.
George Kemble
Executive Chairman
$141k
18,844 shares
-23%
39Weak
SGMTsell 3
Sagimet Biosciences Inc.
Elizabeth Rozek
Chief Legal & Admin. Officer
$82k
10,545 shares
-4%
37Weak
SGMTsell 4
Sagimet Biosciences Inc.
Thierry Chauche
Chief Financial Officer
$7,033
1,312 shares
-8%
48Moderate
SGMTsell 4
Sagimet Biosciences Inc.
David Happel
President & CEO
$65k
12,101 shares
-2%
30Weak
SGMTsell 4
Sagimet Biosciences Inc.
Eduardo Bruno Martins
Chief Medical Officer
$20k
3,640 shares
-3%
30Weak
SGMTsell 4
Sagimet Biosciences Inc.
Elizabeth Rozek
Chief Legal & Admin. Officer
$14k
2,622 shares
-1%
24Weak
SGMTsell10b5-1
Sagimet Biosciences Inc.
George Kemble
Executive Chairman
$290k
37,688 shares
-32%
59Moderate
SGMTsell 3
Sagimet Biosciences Inc.
David Happel
President & CEO
$598k
65,478 shares
-9%

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.

George Kemble sold $3.6M of SGMT | InsiderTell