Skip to content
sellWeak10b5-1 plan

Jason Child sold $3.1M of ARM

Chief Financial Officer at ARM HOLDINGS PLC /UK. 10,400 shares at an average of $300.00, traded Sep 21, 2026, filed Sep 23, 2026.

Warning score
27
Value
$3.1M
10,400 shares
Holdings after
153,442
-6% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    CFO
    +22
  • Trade size
    $3.1M at market
    +25
  • Share of holdings sold
    Sold 6.3% of holdings
    0
  • Cluster
    No other insider selling within 14 days
    0
  • 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.

ARMOct 13, 2026 · close 255.39
Since filing Sep 23, 2026: -23.2%SPY +1.3% · excess -24.5%

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 0001973239-26-000136, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 21, 2026SOpen-market sale
Ordinary Shares10b5-1
-10,400$300.00$3.1M153,44222 d ago

Related signals

Other insiders at ARM HOLDINGS PLC /UK and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
27Weak
ARMsell10b5-1
ARM HOLDINGS PLC /UK
Jason Child
Chief Financial Officer
$2.7M
10,400 shares
-6%
65Notable
ARMsell 5
ARM HOLDINGS PLC /UK
Laura Kathleen Bartels
Chief Accounting Officer
$4.4M
11,306 shares
-48%
60Notable
ARMsell 6
ARM HOLDINGS PLC /UK
William Abbey
Chief Commercial Officer
$2.6M
6,566 shares
-24%
60Notable
ARMsell 6
ARM HOLDINGS PLC /UK
William Abbey
Chief Commercial Officer
$1.4M
4,200 shares
-13%
51Moderate
ARMsell 6
ARM HOLDINGS PLC /UK
William Abbey
Chief Commercial Officer
$703k
2,300 shares
-7%
75Notable
ARMsell 6
ARM HOLDINGS PLC /UK
Charlotte Claire Eaton
Chief People Officer
$2.3M
7,805 shares
-100%
60Notable
ARMsell 6
ARM HOLDINGS PLC /UK
William Abbey
Chief Commercial Officer
$1.3M
4,655 shares
-12%
47Moderate
ARMsell 610b5-1
ARM HOLDINGS PLC /UK
Jason Child
Chief Financial Officer
$7.2M
31,920 shares
-15%
65Notable
ARMsell 6
ARM HOLDINGS PLC /UK
Charlotte Claire Eaton
Chief People Officer
$1.9M
7,100 shares
-48%
65Notable
ARMsell 6
ARM HOLDINGS PLC /UK
William Abbey
Chief Commercial Officer
$3.7M
15,956 shares
-29%

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.

Jason Child sold $3.1M of ARM | InsiderTell