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sellWeak cluster of 3

Yong Yu sold $27k of GNLX

Chief Scientific Officer at GENELUX Corp. 9,683 shares at an average of $2.75, traded Aug 31, 2026, filed Sep 2, 2026.

Warning score
35
Value
$27k
9,683 shares
Holdings after
258,688
-4% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    Officer
    +15
  • Trade size
    $27k at market
    +5
  • Share of holdings sold
    Sold 3.6% of holdings
    0
  • Cluster
    3 insiders selling within 14 days
    +15

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.

GNLXOct 9, 2026 · close 2.56
Since filing Sep 2, 2026: +0.4%SPY +2.0% · excess -1.6%

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 0001493152-26-041283, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 31, 2026SOpen-market sale
Common Stock
-9,683$2.75$27k258,68840 d ago

Related signals

Other insiders at GENELUX Corp and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
35Weak
GNLXsell 3
GENELUX Corp
Joseph Cappello
Chief Technical Officer
$28k
10,257 shares
-3%
49Moderate
GNLXsell 3
GENELUX Corp
Thomas Zindrick
President and CEO
$92k
34,463 shares
-3%
30Weak
GNLXsell 4
GENELUX Corp
Joseph Cappello
Chief Technical Officer
$14k
3,706 shares
-2%
30Weak
GNLXsell 4
GENELUX Corp
Yong Yu
SVP, Clinical Development
$16k
4,192 shares
-3%
48Moderate
GNLXsell 4
GENELUX Corp
Thomas Zindrick
President and CEO
$66k
17,182 shares
-3%
30Weak
GNLXsell 4
GENELUX Corp
Ralph Smalling
Head of Regulatory
$8,740
2,332 shares
-3%
2Weak
GNLXsell10b5-1
GENELUX Corp
John Thomas
director
$50k
10,000 shares
-2%
30Weak
GNLXsell 5
GENELUX Corp
Joseph Cappello
VP, Pharmaceutical Development
$14k
4,737 shares
-8%
30Weak
GNLXsell 5
GENELUX Corp
Ralph Smalling
Head of Regulatory
$3,676
1,259 shares
-3%
35Weak
GNLXsell 5
GENELUX Corp
Yong Yu
VP, Clinical Trial Operations
$16k
5,579 shares
-10%

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.

Yong Yu sold $27k of GNLX | InsiderTell