Charles Dadswell - 18 Aug 2025 Form 4 Insider Report for MASIMO CORP (MASI)

Role
Director
Signature
/s/ Micah W. Young, Attorney-In-Fact
Issuer symbol
MASI
Transactions as of
18 Aug 2025
Net transactions value
$0
Form type
4
Filing time
03 Sep 2025, 17:03:29 UTC
Previous filing
17 Sep 2024
Next filing
10 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Dadswell Charles Director C/O MASIMO CORPORATION, 52 DISCOVERY, IRVINE /s/ Micah W. Young, Attorney-In-Fact 03 Sep 2025 0001575229

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding MASI Restricted Stock Units 0 18 Aug 2025 Common Stock 2,273 Direct F1, F2
holding MASI Non-Qualified Stock Option (Right to Buy) 0 18 Aug 2025 Common Stock 5,104 $153.93 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU.
F2 This RSU award was granted on August 18, 2025 and will vest ratably over four years, with 25% of the award vesting on each anniversary of the grant date.
F3 This option was granted on August 18, 2025 and is exercisable as the option vests. The option vests over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date.