SEC Form 4 · accession 0001104659-26-073537

MASIMO CORP · MASI

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Director

Period of report

Jun 10, 2026

Accepted (ET)

Jun 12, 2026 · 4:40 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0000937556

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2	Jun 10, 2026	D	3,015	$180.00	D	0	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Restricted Stock Units^F3,F4,F1	—	Jun 10, 2026	D	1,119	D	—	—	Common Stock	1,119	0	D

F1On June 10, 2026, pursuant to the Agreement and Plan of Merger, dated February 16, 2026, by and among Masimo Corporation (the "Issuer"), Danaher Corporation ("Parent"), and Mobius Merger Sub, Inc. ("Merger Sub"), Merger Sub merged with and into the Issuer, with the Issuer continuing as the surviving corporation and a wholly owned subsidiary of Parent (the "Merger").
F2On June 10, 2026, at the effective time of the Merger, each share of the Issuer's common stock, par value $0.001 per share (the "Common Stock") issued and outstanding prior to the effective time of the Merger (other than certain excluded shares and dissenting shares) was canceled, extinguished and converted into the right to receive an amount in cash equal to $180.00 per share, without interest (the "Per Share Merger Consideration").
F3On June 10, 2026, at the effective time of the Merger, each of the Issuer's restricted stock units ("RSUs") held by the Issuer's non-employee directors was canceled and converted into the right to receive an amount in cash equal to the Per Share Merger Consideration.
F4Represents the unvested portion of RSUs granted on April 23, 2026, which award of RSUs was to vest on the earlier of the first anniversary of the grant date or the next annual meeting of stockholders following the date of grant.