Masimo (MASI) grants Chief Marketing Officer 6,128 RSUs vesting over four years

Rhea-AI Filing Summary

Benner Tim reported acquisition or exercise transactions in this Form 4 filing.

Masimo Corp’s Chief Marketing Officer, Tim Benner, received a grant of 6,128 restricted stock units (RSUs) on March 6, 2026. Each RSU represents the right to receive one share of Masimo common stock upon vesting.

The award will vest ratably over four years, with 25% of the RSUs vesting on each anniversary of the grant date. Following this grant, Benner holds 6,128 RSUs directly as reported in this filing.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Benner Tim

(Last) (First) (Middle)

C/O MASIMO CORPORATION

52 DISCOVERY

(Street)

IRVINE CA 92618

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MASIMO CORP [ MASI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Marketing Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/06/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	03/06/2026		A		6,128		(2)	03/06/2036	Common Stock	6,128	$0	6,128	D

Explanation of Responses:

1. Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU.

2. This RSU award was granted on March 6, 2026 and will vest ratably over four years, with 25% of the award vesting on each anniversary of the grant date.

Remarks:

	/s/ Micah W. Young, Attorney-In-Fact	03/10/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider transaction did Masimo (MASI) report for Tim Benner?

Masimo reported that Chief Marketing Officer Tim Benner received a grant of 6,128 restricted stock units (RSUs) on March 6, 2026. These RSUs are a form of equity compensation that can convert into common shares when they vest over time.

How many Masimo RSUs were granted to the CMO in this Form 4?

The filing shows a grant of 6,128 restricted stock units (RSUs) to Masimo’s Chief Marketing Officer. Each RSU represents the contingent right to receive one share of Masimo common stock when the vesting conditions described in the award are met.

How do the Masimo RSUs granted to Tim Benner vest over time?

The RSU award to Tim Benner vests ratably over four years. Specifically, 25% of the 6,128 RSUs vest on each anniversary of the March 6, 2026 grant date, gradually delivering common shares if he remains eligible.

What does each Masimo RSU represent in this Form 4 filing?

Each Masimo RSU granted to Tim Benner represents the contingent right to receive one share of common stock upon vesting. No purchase price is required for these units, which are typically used as part of long-term executive compensation.

How many Masimo RSUs does Tim Benner hold after this transaction?

After the reported transaction, Tim Benner holds 6,128 RSUs directly according to the Form 4. This total reflects the newly granted award, which is scheduled to vest in four equal annual installments starting one year after the grant date.