SC 13G/A: MASIMO CORP

AI Summary

SC 13G/A filing by MASIMO CORP.

Risk Assessment

Risk Level: low

FAQ

Key Financial Figures

• $0.001 — ATION (Name of Issuer) Common Stock, $0.001 par value (Title of Class of Securitie

Filing Documents

• schedule13ga-2023.htm (SC 13G/A) — 76KB
• masimologo2018a06.jpg (GRAPHIC) — 199KB
• 0001228621-24-000003.txt ( ) — 352KB

(a) Name of Issuer

Item 1. (a) Name of Issuer Masimo Corporation (b) Address of Issuer's Principal Executive Offices 52 Discovery, Irvine, CA 92618

(a) Name of Person Filing

Item 2. (a) Name of Person Filing Joe Kiani (b) Address of Principal Business Office or, if None, Residence 52 Discovery, Irvine, CA 92618 (c) Citizenship United States (d) Title of Class of Securities Common Stock, $0.001 par value (e) CUSIP Number 574795100

If this statement is filed pursuant to 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a

Item 3. If this statement is filed pursuant to 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a (a) Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o). (b) Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c). (c) Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c). (d) Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8). (e) An investment adviser in accordance with 240.13d-1(b)(1)(ii)(E). (f) An employee benefit plan or endowment fund in accordance with 240.13d-1(b)(1)(ii)(F). (g) A parent holding company or control person in accordance with 240.13d-1(b)(1)(ii)(G). (h) A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813). (i) A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3). (j) A non-U.S. institution in accordance with 240.13d-1(b)(1)(ii)(J). (k) Group, in accordance with 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with 240.13d–1(b)(1)(ii)(J), please specify the type of institution -3- CUSIP No. 574795100 13G

Ownership

Item 4. Ownership For each Reporting Person (a) Amount beneficially owned 4,972,819 shares of the Issuer's common stock, which are comprised of (a) 366,055 shares held in the name of the Reporting Person, (b) 2,250,291 shares held in one trust for which the Reporting Person is the sole trustee, (c) 1,271,350 shares held in three trusts for which the Reporting Person is not the trustee, (d) 51,735 shares held by the Reporting Person's spouse, (e) options to purchase 987,127 shares held by the Reporting Person that were exercisable as of December 31, 2023 or that have or will become exercisable within 60 days after December 31, 2023, (f) 35,895 shares that are subject to restricted stock unit awards held by the Reporting Person and expected to vest within 60 days of December 31, 2023, and (g) 10,366 shar es held for the Reporting Person's account under the Issuer's Retirement Savings Plan. (b) Percent of class 9.2% (c) Number of shares as to which the person has (i) Sole power to vote or to direct the vote 4,921,084 (ii) Shared power to vote or to direct the vote 51,735 (iii) Sole power to dispose or to direct the disposition of 4,921,084 (iv) Shared power to dispose or to direct the disposition of 51,735

Ownership of Five Percent or Less of a Class

Item 5. Ownership of Five Percent or Less of a Class NA

Ownership of More than Five Percent on Behalf of Another Person

Item 6. Ownership of More than Five Percent on Behalf of Another Person The Reporting Person's spouse described in Item 4 is entitled to receive dividends and sales proceeds. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person NA

Identification and Classification of Members of the Group

Item 8. Identification and Classification of Members of the Group NA

Notice of Dissolution of Group

Item 9. Notice of Dissolution of Group NA -4- CUSIP No. 574795100 13G

Certifications

Item 10. Certifications NA -5- CUSIP No. 574795100 13G SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. February 14, 2024 Date s M ICAH Y OUNG Signature Micah Young Attorney-in-Fact for Joe Kiani pursuant to Power of Attorney attached to Amendment No. 11 to this Schedule 13G filed with the Securities and Exchange Commission on February 12, 2019. -6-

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