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sellWeak10b5-1 plan

Michael Jon Brown sold $110k of DXCM

EVP, Chief Legal Officer at DEXCOM INC. 1,700 shares at an average of $64.85, traded Mar 16, 2026, filed Mar 18, 2026.

Warning score
5
Value
$110k
1,700 shares
Holdings after
112,904
-1% from before
From 52-week low
+21%
low $54.84, close $66.34
From 52-week high
-26%
high $89.53, as of Mar 16, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $110k at market
    +10
  • Share of holdings sold
    Sold 1.5% 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.

DXCMOct 9, 2026 · close 84.11
Since filing Mar 18, 2026: +24.3%SPY +18.6% · excess +5.7%

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 0001093557-26-000052, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 16, 2026SOpen-market sale
Common Stock10b5-1
-1,700$64.85$110k112,904Mar 18, 2026

Related signals

Other insiders at DEXCOM INC and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
22Weak
DXCMsell 310b5-1
DEXCOM INC
Sadie Stern
EVP Chief People & Culture Off
$221k
2,565 shares
-2%
36Weak
DXCMsell 410b5-1
DEXCOM INC
Nicholas Augustinos
director
$680k
8,089 shares
-22%
21Weak
DXCMsell 410b5-1
DEXCOM INC
Michael Jon Brown
EVP Chief Legal Compliance Off
$143k
1,700 shares
-2%
31Weak
DXCMsell 310b5-1
DEXCOM INC
Jereme M Sylvain
EVP, Chief Financal Officer
$303k
3,638 shares
-2%
3Weak
DXCMsell10b5-1
DEXCOM INC
Bridgette P Heller
director
$69k
1,012 shares
-4%
14Weak
DXCMsell 210b5-1
DEXCOM INC
Richard Alexander Collins
director
$172k
2,906 shares
-8%
10Weak
DXCMsell 210b5-1
DEXCOM INC
Bridgette P Heller
director
$59k
1,012 shares
-4%
15Weak
DXCMsell 210b5-1
DEXCOM INC
Richard Alexander Collins
director
$218k
3,948 shares
-9%
66Notable
DXCMbuy
DEXCOM INC
Jacob Steven Leach
President & COO
$1.0M
18,200 shares
+6%
17Weak
DXCMsell 310b5-1
DEXCOM INC
Kyle Malady
director
$54k
667 shares
-3%

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.

Michael Jon Brown sold $110k of DXCM | InsiderTell