MASIMO CORP — Director's Dealing 2025

Aug 12, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASIMO CORP (MASI)
CIK: 0000937556
Period of Report: 2025-08-11

Reporting Person: Jellison William R (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-08-11	Common Stock	P	3000	$145.98	Acquired	4790	Direct

Footnotes

F1: The price reported in Column 4 represents the weighted average price per share of open market purchase transactions. The actual purchase prices ranged from a low of $145.84 per share to a high of $146.00 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.