Private company

MASIMO CORP

In its 2026 annual report the company says: “We are a global medical technology company that develops and produces a wide array of industry-leading monitoring technologies, including innovative measurements, sensors, and patient monitors. Our healthcare business develops, manufactures and markets a variety of noninvasive patient monitoring technologies, hospital automation ® and connectivity solutions, and remote monitoring devices.”5 It is headquartered in Irvine, California.1

Last updated Oct 21, 2026.

Overview

$1.5BRevenue, fiscal 20262
-$151.5MNet income, fiscal 20262
  • IndustryElectromedical & Electrotherapeutic Apparatus1
  • HeadquartersIrvine, California1
  • Incorporated inDE3
  • Business address52 Discovery, Irvine, Ca 926183
  • Filer categoryLarge accelerated filer3

We are a global medical technology company that develops and produces a wide array of industry-leading monitoring technologies, including innovative measurements, sensors, and patient monitors. Powered by the Masimo Hospital Automation ™ and Masimo SafetyNet ® platforms, Masimo connectivity, automation, and telehealth and telemonitoring solutions are improving and automating care delivery in the hospital.5 From its latest annual report

Financials

From the company’s reports to the SEC. Every number links to the filing it came from.

Key numbers, fiscal 2026

61.9%Gross margin2
20.3%Operating margin2
-9.9%Net margin2
-21.0%Return on equity2
0.72×Debt to equity2
$198.4MFree cash flow2

Where the money goes

Where each dollar of revenue went, fiscal 2026

  • Cost of revenue38¢$581.7M
  • Research and development8¢$126.4M
  • Selling, general and admin33¢$506.0M
  • Other costs16¢$247.9M
  • Income tax4¢$64.9M

Out of $1.5B in revenue.2 The company lost money this year.

Where each dollar of operating cash went, fiscal 2026

  • Capital spending5¢$19.4M
  • Share buybacks95¢$363.7M

Out of $217.8M of cash from operations. Spending exceeded cash from operations; the rest came from savings or borrowing.2

Financial statements

Revenue67892$1.5B in 2026+78% since 2018
0$1.0B$2.0B$3.0B2018: $858.3M$858.3M20182019: $937.8M$937.8M2019+9%2021: $1.1B$1.1B2021+22%2022: $2.0B$2.0B2022+78%2023: $1.3B$1.3B2023−37%2024: $1.4B$1.4B2024+9%2026: $1.5B$1.5B2026+9%
Gross profit67892$945.2M in 2026+64% since 2018
0$500.0M$1.0B$1.5B2018: $574.9M$574.9M20182019: $629.2M$629.2M2019+9%2021: $743.0M$743.0M2021+18%2022: $1.1B$1.1B2022+43%2023: $765.6M$765.6M2023−28%2024: $794.3M$794.3M2024+4%2026: $945.2M$945.2M2026+19%
Operating income67892$310.0M in 2026+49% since 2018
0$100.0M$200.0M$300.0M$400.0M2018: $208.0M$208.0M20182019: $221.2M$221.2M2019+6%2021: $255.8M$255.8M2021+16%2022: $210.0M$210.0M2022−18%2023: $166.0M$166.0M2023−21%2024: $63.0M$63.0M2024−62%2026: $310.0M$310.0M2026+392%
Net income692-$151.5M in 2026
-$400.0M-$200.0M0$200.0M$400.0M2018: $193.5M$193.5M20182019: $196.2M$196.2M2019+1%2021: $240.3M$240.3M2021+22%2022: $143.5M$143.5M2022−40%2023: $81.5M$81.5M2023−43%2024: -$304.9M-$304.9M20242026: -$151.5M-$151.5M2026−50%
Fiscal year20182019202120222023202420252026
Revenue$858.3M6$937.8M7$1.1B8$2.0B9$1.3B2$1.4B2$1.5B2
Cost of revenue$283.4M6$308.7M7$400.7M8$977.0M9$509.9M2$600.9M2$581.7M2
Gross profit$574.9M6$629.2M7$743.0M8$1.1B9$765.6M2$794.3M2$945.2M2
Research and development$81.0M6$93.3M7$118.7M8$191.4M9$130.5M2$182.2M2$126.4M2
Selling, general and admin$285.4M6$314.7M7$369.0M8$657.4M9$451.3M2$548.6M2$506.0M2
Operating expenses$848.8M9$599.6M2$731.3M2$635.2M2
Operating income$208.0M6$221.2M7$255.8M8$210.0M9$166.0M2$63.0M2$310.0M2
Interest$706.0K6$328.0K7$300.0K8$25.7M13$50.3M13
Income before tax$193.4M9$113.0M2$21.8M2$272.6M2
Income tax$20.2M6$38.0M7$23.4M8$49.9M9$5.3M2$5.6M2$64.9M2
Net income$193.5M6$196.2M6$240.3M6$143.5M9$81.5M2-$304.9M2-$151.5M2
Earnings per share$3.706$3.677$4.398$2.689$1.542-$5.722-$2.832
Earnings per share (diluted)$3.456$3.447$4.148$2.609$1.512-$5.602-$2.802
Shares (weighted, basic)53.6M shares952.8M shares253.3M shares253.6M shares2
Shares (weighted, diluted)55.2M shares954.1M shares254.4M shares254.2M shares2

Compare MASIMO CORP with another company

Corporate structure

MASIMO CORP sits at the top of its group. 51 entities, 23 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of MASIMO CORP

  • Pentwater Capital Management LP Filed SCHEDULE 13G/A on MASIMO CORP, latest Aug 14, 2026 (2 filings since May 15, 2026)
  • Politan Capital Management LP Filed SCHEDULE 13D/A on MASIMO CORP, latest Jun 11, 2026 (18 filings since Aug 16, 2022)
  • Barclays Filed SCHEDULE 13G on MASIMO CORP, latest May 14, 2026
  • Joe E. Kiani Filed SCHEDULE 13G/A on MASIMO CORP, latest May 14, 2026 (8 filings since Feb 14, 2022)
  • BlackRock Portfolio Management LLC Filed SCHEDULE 13G/A on MASIMO CORP, latest Apr 30, 2026 (3 filings since Mar 4, 2025)
  • VANGUARD GROUP INC Filed SCHEDULE 13G/A on MASIMO CORP, latest Mar 27, 2026 (4 filings since Feb 10, 2022)
  • FMR LLC Filed SCHEDULE 13G/A on MASIMO CORP, latest Mar 6, 2026 (5 filings since Feb 9, 2022)
  • BlackRock Filed SCHEDULE 13G/A on MASIMO CORP, latest Feb 7, 2025 (8 filings since Jan 26, 2022)
  • MASIMO CORP Irvine, California
    • 52 Discovery, LLC Subsidiary · California, United States
    • Alton Office Holdings, LLC Subsidiary · Delaware, United States
    • Alton Office Property, LLC Subsidiary · Delaware, United States
    • LiDCO Group Limited Subsidiary · United Kingdom
    • LiDCO Limited Subsidiary · United Kingdom
    • LiDCO Netherlands B.V. Subsidiary · Netherlands
    • Masimo (China) Medical Technology Co., Ltd. Subsidiary · China
    • Masimo (Gulf) Medical Technologies WLL Subsidiary · Qatar
    • Masimo (Shanghai) Industrial Co., Ltd. Subsidiary · China
    • Masimo 17, LLC Subsidiary · California, United States
    • Masimo 25 Sagamore, LLC Subsidiary · New Hampshire, United States
    • Masimo Americas, Inc. Subsidiary · Delaware, United States
    • Masimo Asia Pacific PTE. Ltd. Subsidiary · Singapore
    • Masimo Australia Pty Ltd Subsidiary · Australia
    • Masimo Canada ULC Subsidiary · Nova Scotia, Canada
    • Masimo de Mexico Holdings I LLC Subsidiary · Delaware, United States
    • Masimo de Mexico Holdings II LLC Subsidiary · Delaware, United States
    • Masimo Deutschland GmbH Subsidiary · Germany
    • Masimo Europe Ltd. Subsidiary · United Kingdom
    • Masimo Gulf, LLC Subsidiary · Qatar
    • Masimo Holdings LLC Subsidiary · Delaware, United States
    • Masimo Hong Kong Limited Subsidiary · Hong Kong
    • Masimo Importacao e Distribuicao de Produtos Medicos Ltda Subsidiary · Brazil
    • Masimo International SARL Subsidiary · Switzerland
    • Masimo International SARL Regional Headquarter, LLC Subsidiary · Saudi Arabia
    • and 25 more

Built from subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

What it owns

What MASIMO CORP reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Property and equipment

ItemLatestA year beforeChange
Property and equipment, before depreciation$671.3M2 Jan 3, 2026$602.1M2 Dec 28, 2024+11.5%
Accumulated depreciation$316.2M2 Jan 3, 2026$265.1M2 Dec 28, 2024+19.3%
Property and equipment, net$355.1M2 Jan 3, 2026$337.0M2 Dec 28, 2024+5.4%
Operating-lease assets (leased space)$32.6M2 Jan 3, 2026$29.2M2 Dec 28, 2024+11.6%

Investments

ItemLatestA year beforeChange
Cash and cash equivalents$152.3M2 Jan 3, 2026$123.6M2 Dec 28, 2024+23.2%
Stakes in other companies (equity method)$5.9M2 Jan 3, 2026$6.6M2 Dec 28, 2024−10.6%

Intangibles and goodwill

ItemLatestA year beforeChange
Goodwill$101.0M2 Jan 3, 2026$96.7M2 Dec 28, 2024+4.4%
Intangible assets, net (excluding goodwill)$558.2M9 Dec 28, 2024$652.3M9 Dec 30, 2023−14.4%
Indefinite-lived intangibles (excluding goodwill)$207.3M9 Dec 28, 2024$232.4M9 Dec 30, 2023−10.8%
Finite-lived intangibles, gross$130.2M2 Jan 3, 2026$128.1M2 Dec 28, 2024+1.6%
Accumulated amortization$78.1M2 Jan 3, 2026$66.5M2 Dec 28, 2024+17.4%
Finite-lived intangibles, net$52.1M2 Jan 3, 2026$61.6M2 Dec 28, 2024−15.4%

Inventory

ItemLatestA year beforeChange
Inventory, total$380.3M2 Jan 3, 2026$294.8M2 Dec 28, 2024+29.0%
Raw materials$152.8M2 Jan 3, 2026$151.0M2 Dec 28, 2024+1.2%
Work in process$21.8M2 Jan 3, 2026$19.2M2 Dec 28, 2024+13.5%
Finished goods$205.7M2 Jan 3, 2026$124.6M2 Dec 28, 2024+65.1%

Properties, in its own words

Our U.S. corporate headquarters is located in Irvine, California. We own and or lease facilities globally that are utilized for research and development, engineering, sales, administrative, manufacturing, distribution and warehousing. The following is a summary of our material facilities:

Location · Ownership Status(Owned/Leased) · ApproximateSquare Footage · Lease Term · Business Segment · Primary Usage

The rest of Item 2

Pasir Gudang, Malaysia · Leased · 329,000 · April 2029 · Healthcare · Manufacturing, warehousing and distribution

Irvine, California · Owned · 314,000 · N/A · Healthcare · Executive offices, engineering, research and development

Mexicali, Mexico · Leased · 291,700 · May 2027, August 2029, December 2035 · Healthcare · Manufacturing, warehousing and distribution

Irvine, California · Leased · 103,000 · November 2026, January 2032 · Healthcare · Sales and administrative, warehousing, manufacturing and distribution

Hudson, New Hampshire · Owned · 87,000 · N/A · Healthcare · Manufacturing, warehousing and distribution

Neuchatel, Switzerland · Owned · 79,000 · N/A · Healthcare · Sales and administrative

Oude Meer, Netherlands · Leased · 62,000 · January 2030 · Healthcare · Warehousing and distribution

Riyadh, Saudi Arabia · Leased · 33,000 · April 2026, October 2026 · Healthcare · Manufacturing, warehousing, distribution and trading

San Luis Ray, Mexico · Leased · 11,000 · December 2028 · Healthcare · Manufacturing, warehousing and distribution

We also lease and occupy various other facilities throughout the world to operate our business. We believe that our existing facilities are adequate to meet our needs and that existing needs and future growth can be accommodated by purchasing or leasing alternative or additional space.

Item 2 of the 10-K filed Feb 27, 2026.5

Leadership

Who has led MASIMO CORP, and when. Pick a name to see everywhere that person has worked.

Board members and other officers (40)

Subsidiaries and ownership

Subsidiaries (Exhibit 21)

  • 52 Discovery, LLC California4
  • Alton Office Holdings, LLC Delaware4
  • Alton Office Property, LLC Delaware4
  • LiDCO Group Limited United Kingdom4
  • LiDCO Limited United Kingdom4
  • LiDCO Netherlands B.V. Netherlands4
  • Masimo (China) Medical Technology Co., Ltd. China4
  • Masimo (Gulf) Medical Technologies WLL Qatar4
  • Masimo (Shanghai) Industrial Co., Ltd. China4
  • Masimo 17, LLC California4
  • Masimo 25 Sagamore, LLC New Hampshire4
  • Masimo Americas, Inc. Delaware4
  • Masimo Asia Pacific PTE. Ltd. Singapore4
  • Masimo Australia Pty Ltd Australia4
  • Masimo Canada ULC Nova Scotia4
  • Masimo Deutschland GmbH Germany4
  • Masimo Europe Ltd. United Kingdom4
  • Masimo Gulf, LLC Qatar4
  • Masimo Holdings LLC Delaware4
  • Masimo Hong Kong Limited Hong Kong4
  • Masimo Importacao e Distribuicao de Produtos Medicos Ltda Brazil4
  • Masimo International SARL Switzerland4
  • Masimo International SARL Regional Headquarter, LLC Saudi Arabia4
  • Masimo International Technologies SARL Switzerland4
All 50 listed subsidiaries
  • Masimo Japan Kabushiki Kaisha Japan4
  • Masimo Korea, LLC South Korea4
  • Masimo LHC, Limited United Kingdom4
  • Masimo Medical Technologies (Malaysia) Sdn Bhd. Malaysia4
  • Masimo Medical Technologies (Spain) SL Spain4
  • Masimo Medical Technologies India Private Limited India4
  • Masimo Medikal Ürünler Ticaret Limited Şirketi Turkey4
  • Masimo Mexico, S. de R.L. de C.V. Mexico4
  • Masimo Polska Spółka z ograniczoną odpowiedzialnością Poland4
  • Masimo Saudi Arabia for Trading, LLC Saudi Arabia4
  • Masimo Semiconductor, Inc. Delaware4
  • Masimo Sweden AB Sweden4
  • Masimo Technology Café LLC California4
  • Masimo de Mexico Holdings I LLC Delaware4
  • Masimo de Mexico Holdings II LLC Delaware4
  • Masimo Öesterreich GmbH Austria4
  • Nura Holdings Pty Ltd Australia4
  • Nura Operations Pty Ltd Australia4
  • OC Property Shelter LLC Delaware4
  • OC Property Ventures LLC Delaware4
  • Patient Doctor Technologies, Inc. Delaware4
  • SEDLine, Inc. Delaware4
  • Shenzhen Nura Electroacoustic Technology Ltd China4
  • SpO2.com, Inc. Delaware4
  • TNI medical AG Germany4
  • VCCB Holdings, Inc. Delaware4

The subsidiaries the company lists in Exhibit 21 of its annual report, as filed.

Timeline

  1. Jun 10, 20268-K Ended a material agreement; Completed an acquisition or sale; Listing notice or transfer70
  2. May 4, 20268-K Shareholder vote; Regulation FD disclosure71
  3. Apr 23, 20268-K Other events72
  4. Feb 17, 20268-K Entered a material agreement; Regulation FD disclosure73
  5. Jan 12, 20268-K Results of operations; Regulation FD disclosure74
  6. Dec 3, 20258-K Regulation FD disclosure75
  7. Dec 1, 20258-K Entered a material agreement; Ended a material agreement; New debt or obligation76
  8. Nov 4, 20258-K Results of operations; Regulation FD disclosure77
  9. Sep 29, 20258-K Financial statements and exhibits78
  10. Sep 23, 20258-K Completed an acquisition or sale; Regulation FD disclosure79
  11. Aug 19, 20258-K Executive or director change80
  12. Aug 5, 20258-K Results of operations; Regulation FD disclosure81
  13. Feb 14, 2025New chief executive Catherine M. Szyman becomes CEO18
  14. Nov 13, 2024New chief executive Michelle Brennan becomes CEO19

Calendar

When it reported results

  1. Jan 12, 2026Reported quarterly or annual results74
  2. Nov 4, 2025Reported quarterly or annual results77
  3. Aug 5, 2025Reported quarterly or annual results81
  4. May 6, 2025Reported quarterly or annual results82
  5. Feb 25, 2025Reported quarterly or annual results83
  6. Jan 16, 2025Reported quarterly or annual results84
  7. Nov 5, 2024Reported quarterly or annual results85
  8. Oct 29, 2024Reported quarterly or annual results86

Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar

Filings

500 filings to the SEC since October 2021: 8 annual reports, 14 quarterly reports, 81 major events, 147 insider forms, 49 large holders, 201 other. The latest 20:

  1. Aug 14, 2026SCHEDULE 13G/A EDGAR
  2. Jun 22, 202615-12G EDGAR
  3. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  4. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  5. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  6. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  7. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  8. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  9. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  10. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  11. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  12. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  13. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  14. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  15. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  16. Jun 12, 20264 OWNERSHIP DOCUMENT EDGAR
  17. Jun 11, 2026SCHEDULE 13D/A EDGAR
  18. Jun 10, 202625-NSE EDGAR
  19. Jun 10, 2026S-8 POS EDGAR
  20. Jun 10, 2026S-8 POS EDGAR

The 500 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Insider trades

31 open-market trades by officers, directors and large owners since October 2021: 7 buys and 24 sales. Grants, option exercises and gifts are left out.

DateWhoTradeSharesPriceValueFiling
Jan 28, 2026Sampath AnandEVP, OperationsSale18,680$136.81$2.6MForm 4
Aug 13, 2025Brennan MichelleDirectorBuy100$155.25$15.5KForm 4
Aug 12, 2025Brennan MichelleDirectorBuy100$150.35$15.0KForm 4
Aug 11, 2025Jellison William RDirectorBuy3,000$145.98$437.9KForm 4
May 12, 2025Muhsin BilalChief Operating OfficerSale10,000$163.28$1.6MForm 4
Mar 14, 2025REYNOLDS CRAIG BDirectorSale2,053$166.13$341.1KForm 4
Mar 10, 2025Muhsin BilalChief Operating OfficerSale30,000$167.49$5.0MForm 4
Apr 26, 2024REYNOLDS CRAIG BDirectorSale40,000$136.17$5.4MForm 4
May 25, 2023KIANI JOE ECEO and Chairman of the BoardBuy6,365$157.16$1.0MForm 4
Dec 15, 2022KIANI JOE ECEO and Chairman of the BoardBuy7,040$144.80$1.0MForm 4
Nov 14, 2022KIANI JOE ECEO and Chairman of the BoardBuy31,994$124.00$4.0MForm 4
Nov 11, 2022KIANI JOE ECEO and Chairman of the BoardBuy7,784$129.27$1.0MForm 4
Jan 24, 2022Mikkelson AdamDirectorSale600$214.80$128.9KForm 4
Jan 18, 2022Mikkelson AdamDirectorSale600$228.70$137.2KForm 4
Jan 10, 2022Mikkelson AdamDirectorSale600$250.01$150.0KForm 4
Jan 1, 2022KIANI JOE ECEO and Chairman of the BoardSale2$273.18$546Form 4
Dec 6, 2021Levy TaoEVP, Bus DevSale3,000$275.47$826.4KForm 4
Nov 19, 2021KIANI JOE ECEO and Chairman of the BoardSale8,416$300.83$2.5MForm 4
Nov 18, 2021KIANI JOE ECEO and Chairman of the BoardSale20,399$300.05$6.1MForm 4
Nov 17, 2021KIANI JOE ECEO and Chairman of the BoardSale32,597$300.54$9.8MForm 4

All 31 trades can be filtered by person here when JavaScript is on.

From Forms 4 filed with the SEC.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

Executive pay

What the company paid its top executives, from the summary compensation table in its proxy statement. Total pay includes salary, bonus, stock and option awards and other pay, as the company valued them.

YearExecutiveAgeSalaryTotal pay
2024Joe Kiani$1.2M$15.9M95
2024Bilal Muhsin$655.1K$8.2M95
2024Micah Young$627.8K$8.1M95
2024Tom McClenahan$524.1K$7.2M95
2024Blair Tripodi$574.3K$6.9M95
2024Former Interim ChiefExecutive Officer$236.5K$1.7M95
2023Former Chief Executive Officer andChairman of the Board$1.2M$15.5M95
2023Chief Operating Officer$627.0K$3.4M95
2023Executive Vice President and ChiefFinancial Officer$600.9K$3.4M95
2023Executive Vice President, GeneralCounsel and Corporate Secretary$501.6K$3.3M95
2022Former Chief Executive Officer andChairman of the Board$1.2M$16.5M95
2022Chief Operating Officer$621.1K$3.8M95
2022Executive Vice President and ChiefFinancial Officer$577.4K$2.5M95
2022Executive Vice President, GeneralCounsel and Corporate Secretary$494.7K$2.3M95

SEC filer profile

How MASIMO CORP is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

  • Name on EDGARMASIMO CORP1
  • CIK0000937556
  • Employer ID (EIN)33-03688825
  • Filer statusLarge accelerated filer not an emerging growth company; not a smaller reporting company; not a shell company5
  • Incorporated inDelaware5
  • Fiscal year endsJanuary 21
  • Industry code (SIC)3845 Electromedical & Electrotherapeutic Apparatus1
  • SEC reviewing officeOffice of Industrial Applications and Services, Division of Corporation Finance1
  • Business address52 Discovery, Irvine, CA 926181
  • Phone949-297-70001
  • Shares outstanding52,365,808 as of Apr 4, 202610
  • Public float$3.9B as of Jun 28, 20255
  • AuditorGRANT THORNTON LLP, San Francisco, California PCAOB ID 248; it also attests to the company’s internal control over financial reporting5
  • On EDGAR sinceNov 13, 19961
  • Filings1,545 in all: 4 (677), 8-K (227), DEFA14A (77), SC 13G/A (71), 3 (58), 10-Q (57), DFAN14A (38), CT ORDER (31)1
    All 58 form types

    UPLOAD (25), 10-K (19), 11-K (17), 144 (17), SC 13G (17), 5 (16), DEF 14A (16), SC 13D/A (15), S-8 POS (14), CORRESP (13), S-8 (13), SD (13), SCHEDULE 13G/A (12), S-1/A (9), ARS (8), 4/A (6), S-3ASR (6), POSASR (5), PRRN14A (5), 10-K/A (4), 3/A (4), 8-K/A (4), DEFC14A (4), PREC14A (4), 8-A12B (3), DEFR14A (3), EFFECT (3), PRER14A (3), SCHEDULE 13G (3), 10QSB (2), 15-12G (2), NT 11-K (2), POS AM (2), REGDEX (2), S-1 (2), SCHEDULE 13D/A (2), 10KSB40 (1), 15-15D (1), 25 (1), 25-NSE (1), 424B4 (1), 5/A (1), 8-A12B/A (1), CERTNAS (1), DEFM14A (1), DFRN14A (1), FWP (1), PREM14A (1), RW (1), SC 13D (1)

  • Latest filingsAnnual report (10-K) Feb 27, 2026
    Quarterly report (10-Q) May 5, 2026
    Proxy statement (DEF 14A) Mar 26, 2025
    Latest 8-K (8-K) Jun 10, 2026

Securities registered for trading

ClassSymbolExchange
Common Stock, par value $0.001MASIThe Nasdaq Stock Market LLC

From the cover page of the 10-K filed Feb 27, 2026 (Section 12(b) of the Exchange Act).5

Risk factors and legal proceedings

The risks MASIMO CORP names in Item 1A of its 10-K filed Feb 27, 2026: 68 risks under these headings, as written.5

  • Risks Related to the Proposed Merger
  • We may not complete the proposed Merger within the timeframe we anticipate or at all, which could have an adverse effect on our business, financial results and/or operations.
  • The Merger is subject to the expiration or termination of applicable waiting periods and the receipt of approvals, consents or clearances from several regulatory authorities that, if not obtained, could prevent completion of the Merger.
  • Uncertainties associated with the Merger could adversely affect our business, results of operations, cash flows and financial condition.
  • The Merger Agreement contains provisions that could discourage a potential competing acquirer of the Company or could result in a competing acquisition proposal being at a lower price than it might otherwise be.
  • We have incurred, and will continue to incur, direct and indirect costs as a result of the Merger.
  • Our directors and executive officers have interests in the Merger that may be different from, or in addition to, the interests of our other stockholders.
  • Litigation challenging the Merger Agreement may prevent the Merger from being consummated within the expected timeframe or at all.
  • If the Merger is completed, our stockholders will forgo the opportunity to benefit from potential future appreciation in the value of the Company.
  • Risks Related to Our Revenues
  • We currently derive a significant portion of our revenue from our Masimo SET® platform, Masimo rainbow SET® platform and related products. If these technologies and related products do not continue to achieve market acceptance, our business, financial condition and results of operations would be adversely affected.
  • Some of our products are in development or have been recently introduced into the market and may not achieve market acceptance, which could limit our growth and adversely affect our business, financial condition and results of operations.
The other 58 risks
  • Our Cross-Licensing Agreement with Willow Laboratories, Inc. (Willow), formerly known as Cercacor Laboratories, Inc., by its terms, purports to limit Masimo’s ability to commercialize new products, new or improved technologies and additional applications for Masimo SET® and our licensed rainbow® technology, which may impair our growth and adversely affect our business, financial condition and results of operations.
  • We depend on our domestic and international original equipment manufacturer (OEM) partners for a portion of our revenue. If they do not devote sufficient resources to the promotion of products that use our technologies, our business would be harmed.
  • If we fail to maintain or develop relationships with Group Purchasing Organizations, sales of our products would decline.
  • Inadequate levels of coverage or reimbursement from governmental or other third-party payers for our products, or for procedures using our products, may cause our revenue to decline or prevent us from realizing revenues from future products.
  • Our customers may reduce, delay or cancel purchases due to a variety of factors, such as lower hospital census levels or third-party guidelines, which could adversely affect our business, financial condition and results of operations.
  • The loss of any large customer or distributor, or any cancellation or delay of a significant purchase by a large customer or international tender, or any non-payment, non-performance or disagreement or dispute with any customer or distributor could reduce our net sales and harm our operating results.
  • Counterfeit Masimo sensors and third-party reprocessed single-patient-use Masimo sensors may harm our reputation and adversely affect our business, financial condition and results of operations.
  • Risks Related to Our Intellectual Property
  • If the patents we own or license, or our other intellectual property rights, do not adequately protect our technologies, we may lose market share to our competitors and be unable to operate our business profitably.
  • If third-parties claim that we infringe their intellectual property rights, we may incur liabilities and costs and may have to redesign or discontinue selling certain products.
  • We believe competitors may currently be violating and may in the future violate our intellectual property rights. As a result, we may initiate litigation to protect and enforce our intellectual property rights, which may result in substantial expense and may divert management’s attention from implementing our business strategy.
  • Risks Related to Our Regulatory Environment
  • Our failure to obtain and maintain FDA clearances or approvals on a timely basis, or at all, would prevent us from commercializing our current, upgraded or new products in the U.S., which could severely harm our business.
  • The failure of our OEM partners to obtain required FDA clearances or approvals for products that incorporate our technologies could have a negative impact on our revenue.
  • We are subject to on-going post-market regulation by regulatory authorities and if we fail to comply with these regulatory requirements we could be subject to enforcement actions, penalties or other harm to our business.
  • Failure to obtain regulatory authorizations in foreign jurisdictions may prevent us from marketing our products abroad.
  • Modifications to our marketed medical devices may require new regulatory clearances or premarket approvals, or may require us to cease marketing or to recall the modified devices until clearances or approvals are obtained.
  • If our products cause or contribute to a death or serious injury, or malfunction in a way that would likely cause or contribute to a death or serious injury, we will be subject to medical device reporting regulations and other applicable laws and may need to initiate voluntary or mandatory corrective actions, such as the recall of our products.
  • Promotion of our products using claims that are off-label, unsubstantiated, false or misleading could subject us to substantial penalties.
  • The regulatory environment governing information, data security and privacy is increasingly demanding and evolving. Many of the laws and regulations in this area are subject to uncertain interpretation, and our failure to comply could result in claims, penalties or increased costs or otherwise harm our business.
  • We may be subject to or otherwise affected by federal and state healthcare laws, including fraud and abuse laws, and could face substantial penalties if we are unable to fully comply with these laws.
  • Changes to regulatory, funding, staffing, trade, and other policies and actions by the U.S. government could adversely affect our business operations.
  • Risks Related to Our Business and Operations
  • Under the Cross-Licensing Agreement, by its terms, we would be required to assign to Willow certain products and technologies we develop that relate to the monitoring of non-vital sign parameters.
  • In the event that the Cross-Licensing Agreement is terminated for any reason, or Willow grants a license to rainbow® technology to a third-party, our business could be adversely affected.
  • We may not be able to commercialize our products incorporating licensed rainbow® technology cost-effectively or successfully.
  • Our dispute with Willow with respect to the Cross-Licensing Agreement could result in damages awarded against the Company or could adversely affect our business.
  • If we are unable to obtain key materials and components from sole or limited source suppliers, we will not be able to deliver our products to customers.
  • Future strategic transactions, including acquisitions or separations of businesses and strategic investments or joint ventures, could negatively affect our business, financial condition and results of operations if we fail to integrate the acquired businesses and their employees successfully into our existing operations or achieve the desired results of our initiatives.
  • Our new products and changes to existing products could fail to attract or retain users or generate revenue and profits.
  • Our Credit Facility contains certain covenants and restrictions that may limit our flexibility in operating our business.
  • We may need additional capital and failure to raise additional capital on terms favorable to us, or at all, could limit our ability to grow our business and develop or enhance our service offerings to respond to market demand or competitive challenges.
  • Risks Related to Our Stock
  • Concentration of ownership of our stock among our existing directors, executive officers and principal stockholders may prevent new investors from influencing significant corporate decisions.
  • We may be unable to accurately forecast our financial and operating results and appropriately plan our expenses in the future, or we may fail to meet our publicly announced guidance about our business and future operating results.
  • Our corporate documents, and Delaware law contain provisions that could discourage, delay or prevent a change in control of our company, prevent attempts to replace or remove current management and reduce the market price of our stock.
  • Recent changes to our senior leadership and our Board could create uncertainties and adversely impact our business.
  • Exclusive forum provisions in our bylaws could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.
  • General Risk Factors
  • We may experience significant fluctuations in our periodic financial results and may not maintain our current levels of profitability in the future.
  • A dispute with our former Chairman and CEO, Mr. Kiani, with respect to his Amended Employment Agreement could be costly and adversely affect our business.
  • If we lose the services of our key personnel, or if we are unable to attract and retain other key personnel, we may not be able to manage our operations or meet our growth objectives.
  • Adverse developments affecting the financial services industry, such as actual events or concerns involving liquidity, defaults or non-performance by financial institutions or transactional counterparties, could adversely affect our current and projected business operations and its financial condition and results of operations.
  • Future changes in accounting pronouncements and tax laws, or the interpretation thereof, could have a significant impact on our reported results, and may affect our historical reporting of previous transactions.
  • Our retirement and post-retirement pension benefit plans are subject to financial market risks that could adversely affect our future results of operations and cash flows.
  • We are involved, and may become involved in the future, in disputes and other legal or regulatory proceedings that, if adversely decided or settled, could materially and adversely affect our business, financial condition and results of operations.
  • Changes to government immigration regulations may materially affect our workforce and limit our supply of qualified professionals, or increase our cost of securing workers.
  • The risks inherent in operating internationally, including the purchase, sale and shipment of our components and products across international borders, may adversely impact our business, financial condition and results of operations.
  • The laws of foreign countries may not adequately protect our intellectual property rights.
  • Our operations may be adversely impacted by our exposure to risks related to foreign currency exchange rates.
  • We currently manufacture our products at a limited number of locations and any disruption to, expansion of, or changes in trade programs related to such manufacturing operations could adversely affect our business, financial condition and results of operations.
  • If we do not accurately forecast customer demand, we may hold suboptimal inventory levels that could adversely affect our business, financial condition and results of operations.
  • If we fail to comply with the reporting obligations of the Exchange Act or if we fail to maintain adequate internal control over financial reporting, our business, results of operations and financial condition and investors’ confidence in us could be adversely affected.
  • Changing laws and increasingly complex corporate governance and public disclosure requirements could have an adverse effect on our business and operating results.
  • If product liability claims are brought against us, we could face substantial liability and costs.
  • We may incur environmental and personal injury liabilities related to certain hazardous materials used in our operations.
  • We rely significantly on information technology and any failure, inadequacy, interruption or security lapse of that technology, including any cybersecurity incidents, could harm our ability to operate our business effectively.
  • Artificial intelligence presents risks and challenges that can impact our business, including by posing security risks to our confidential information, proprietary information and personal data.
  • The impact of the Russian invasion of Ukraine, ongoing instability in Venezuela and the Israel-Palestine-Iran Conflict, on the global economy, energy supplies and raw materials is uncertain, but may prove to negatively impact our business and operations.
  • Our stock price may be volatile, and your investment in our stock could suffer a decline in value.
  • Our investors could experience substantial dilution of their investments as a result of subsequent exercises of our outstanding options, vesting of outstanding restricted stock units (RSUs) and performance stock units (PSUs), or the grant of future equity awards by us.
  • Future resales of our stock, including those by our insiders and a few investment funds, may cause our stock price to decline.
  • We may elect not to declare cash dividends on our stock, may elect to only pay dividends on an infrequent or irregular basis, or may elect not to make any additional stock repurchases. As a result, any return on your investment may be limited to the value of our stock. In addition, the payment of any future dividends or the repurchase of our stock might limit our ability to pursue other growth opportunities.

Legal proceedings

The information set forth in Note 24, “Commitments and Contingencies” to our accompanying consolidated financial statements under the caption “Litigation” included in Part IV, Item 15(a) of this Annual Report on Form 10-K is incorporated herein by reference.

The opening of Item 3, Legal Proceedings.5

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