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buyModerate cluster of 2

William R Jellison bought $438k of MASI

director at MASIMO CORP. 3,000 shares at an average of $145.98, traded Aug 11, 2025, filed Aug 12, 2025.

Conviction score
50
Value
$438k
3,000 shares
Holdings after
4,790
+168% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    Director
    +15
  • Trade size
    $438k at market
    +17
  • Relative to holdings
    Holdings up 168%
    +10
  • Price context
    No price history yet
    0
  • Cluster
    2 insiders buying within 14 days
    +8
  • Repeat buying
    First buy in 90 days
    0
  • Track record
    Too few past buys to judge (0 with prices)
    0

What happened after comparable buys

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.

Rows in this filing

Every transaction in Form 4 0000937556-25-000123, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 11, 2025POpen-market purchase
Common Stock
+3,000$145.98$438k4,790Aug 12, 2025

Related signals

Other insiders at MASIMO CORP and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
15Weak
MASIsell10b5-1
MASIMO CORP
Anand Sampath
EVP, Ops & Clinical Research
$2.6M
18,680 shares
-31%
28Weak
MASIbuy 2
MASIMO CORP
Michelle Brennan
Interim CEO
$31k
200 shares
+3%
20Weak
MASIsell10b5-1
MASIMO CORP
Bilal Muhsin
Chief Operating Officer
$1.6M
10,000 shares
-29%
25Weak
MASIsell10b5-1
MASIMO CORP
Craig B Reynolds
director
$5.4M
40,000 shares
-84%

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.

William R Jellison bought $438k of MASI | InsiderTell