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sellNotable cluster of 6

Francis Tang sold $1.7M of DIOD

Chief Technology Officer at DIODES INC /DEL/. 15,330 shares at an average of $112.04, traded May 29, 2026, filed Jun 1, 2026.

Warning score
60
Value
$1.7M
15,330 shares
Holdings after
71,438
-18% from before
From 52-week low
+149%
low $42.36, close $105.32
From 52-week high
-9%
high $116.05, as of May 29, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $1.7M at market
    +25
  • Share of holdings sold
    Sold 18% of holdings
    +5
  • Cluster
    6 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.

DIODOct 12, 2026 · close 90.62
Since filing Jun 1, 2026: -11.1%SPY +3.1% · excess -14.2%

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 0001363562-26-000006, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 29, 2026SOpen-market sale
Diodes Incorporated Common Stock
-15,330$112.04$1.7M71,438Jun 1, 2026

Related signals

Other insiders at DIODES INC /DEL/ and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
54Moderate
DIODsell 6
DIODES INC /DEL/
Richard Dallas White
Corporate Secretary
$319k
3,000 shares
-27%
55Moderate
DIODsell 7
DIODES INC /DEL/
Francis Tang
Chief Technology Officer
$997k
9,137 shares
-10%
49Moderate
DIODsell 7
DIODES INC /DEL/
Emily Yang
SVP Worldwide Sales/Marketing
$545k
5,000 shares
-7%
51Moderate
DIODsell 7
DIODES INC /DEL/
Jin Zhao
President, Diodes Asia
$394k
3,689 shares
-8%
56Moderate
DIODsell 7
DIODES INC /DEL/
Gary Yu
President and CEO
$400k
3,632 shares
-3%
41Moderate
DIODsell 7
DIODES INC /DEL/
Andy Tsong
SVP Worldwide Products Group
$169k
1,582 shares
-3%
42Moderate
DIODsell 7
DIODES INC /DEL/
Emily Yang
SVP Worldwide Sales/Marketing
$194k
2,000 shares
-3%
42Moderate
DIODsell 7
DIODES INC /DEL/
Emily Yang
SVP Worldwide Sales/Marketing
$203k
2,000 shares
-3%
46Moderate
DIODsell 5
DIODES INC /DEL/
Francis Tang
Chief Technology Officer
$393k
3,643 shares
-4%
72Notable
DIODsell 6
DIODES INC /DEL/
Brett R Whitmire
CFO
$1.7M
16,556 shares
-27%

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.