Coleman Jon

CIK: 0001442689
Primary company: MASIMO CORP (MASI)

Coleman Jon is a corporate insider at MASIMO CORP (MASI) filing SEC Form 4 transactions. 167 transactions across 2 companies, totaling $0 in purchases and $27,161,678 in sales. Source: SEC EDGAR.

AI Insider Summary

Jon Coleman's record centers on Masimo (MASI, 163 tx) with a Dexcom (DXCM) tie where the live action is — open-market sales of 4,911 shares at $74.13 and 4,912 at $73, plus a code-F withholding at $71.90. Disposition activity in DXCM in the low $70s.

The DXCM selling clusters in the low $70s, a real disposition rather than vesting dust, while Masimo remains the deeper career anchor.

For readers, Coleman's live signal is DXCM selling near $73; the Masimo tie frames the broader role, but the actionable datapoint is the low-$70s Dexcom disposition.

Total Transactions
167
Total Buy Value
$0
Total Sell Value
$27.16M
Net Activity
$-27.16M
Last Transaction
Jun 2026
Companies
2

Companies

Transaction History

Source: SEC EDGAR Form 4 insider transaction filings.

Type
Sale
Shares
4,911
Price
$74.13
Value
$364K
Type
Sale
Shares
4,912
Price
$73.00
Value
$359K
Type
Tax Payment
Shares
7,362
Price
$71.90
Value
$529K
Type
Award
Shares
68,738
Price
-
Value
-
Type
Award
Shares
2,637
Price
$250.73
Value
$661K
Type
Award
Shares
14,593
Price
$0.00
Value
$0
Type
Exercise
Shares
2,000
Price
$0.00
Value
$0
Type
Tax Payment
Shares
786
Price
$268.38
Value
$211K
Type
Exercise
Shares
2,000
Price
$0.00
Value
$0
Type
Exercise
Shares
8,250
Price
$31.01
Value
$256K
Type
Sale
Shares
8,250
Price
$264.02
Value
$2.18M
Type
Exercise
Shares
8,250
Price
$31.01
Value
$256K
Type
Exercise
Shares
1,250
Price
$31.01
Value
$39K
Type
Sale
Shares
1,250
Price
$235.00
Value
$294K
Type
Exercise
Shares
1,250
Price
$31.01
Value
$39K
Type
Exercise
Shares
2,000
Price
$28.03
Value
$56K
Type
Exercise
Shares
2,000
Price
$28.03
Value
$56K
Type
Sale
Shares
2,000
Price
$200.00
Value
$400K
Type
Exercise
Shares
2,000
Price
$28.03
Value
$56K
Type
Sale
Shares
2,000
Price
$195.00
Value
$390K