Masimo CORP (MASI) — SEC Filings

Overview

Masimo CORP (MASI) is a publicly traded company tracked on ReadTheFiling. The most recent enriched filing is a 8-K filed on Dec 1, 2025: On December 1, 2025, Masimo Corp. entered into a material definitive agreement and simultaneously terminated another. The company also created a direct financial obligation or an off-balance sheet arrangement. Specific details regarding the nature of these agreements and obligations are not provided

Sentiment Summary

Across 50 filings, the sentiment breakdown is: 1 bearish, 48 neutral, 1 mixed. The dominant filing sentiment for Masimo CORP is neutral.

Filing Type Overview

Masimo CORP (MASI) has filed 1 DEFM14A, 22 8-K, 5 10-Q, 1 8-K/A, 1 DEF 14A, 1 10-K, 3 SC 13D/A, 16 DEFA14A with the SEC between Jul 2024 to Apr 2026.

Filings by Year

2026 · 2025 · 2024

Recent Filings (50)

• DEFM14A Filing — DEFM14A · Apr 1, 2026
• 8-K Filing — 8-K · Dec 3, 2025
• Masimo Corp. Enters New Agreements, Terminates Others — 8-K · Dec 1, 2025 Risk: medium
  On December 1, 2025, Masimo Corp. entered into a material definitive agreement and simultaneously terminated another. The company also created a direct financia
• Masimo Swings to Loss Amid Sound United Divestiture, Healthcare Shines — 10-Q · Nov 4, 2025 Risk: medium
  Masimo Corporation reported a net loss of $100.4 million for the three months ended September 27, 2025, a significant decline from a net income of $9.8 million
• Masimo Corp. Files 8-K Amendment — 8-K · Sep 29, 2025 Risk: low
  Masimo Corp. filed an 8-K/A amendment on September 29, 2025, related to events on September 23, 2025. The filing is an amendment to a previous 8-K report and co
• Masimo Corp Files 8-K on Asset Acquisition/Disposition — 8-K · Sep 23, 2025 Risk: medium
  On September 23, 2025, Masimo Corporation filed an 8-K report detailing the completion of an acquisition or disposition of assets. The filing also includes Regu
• Masimo Corp. Announces Executive and Board Changes — 8-K · Aug 19, 2025 Risk: medium
  Masimo Corp. announced on August 18, 2025, changes in its executive team and board of directors. The filing details the departure of certain officers and the el
• Masimo Swings to Loss Amid Revenue Dip, R&D Spend Rises — 10-Q · Aug 5, 2025 Risk: high
  Masimo Corp. reported a net loss of $10.0 million for the three months ended June 28, 2025, a significant decline from a net income of $15.0 million in the prio
• Masimo Corp. Appoints Interim CFO, Elects New Directors — 8-K · Jun 12, 2025 Risk: medium
  Masimo Corp. announced on June 6, 2025, the departure of its Chief Financial Officer, Micah R. Estlick, effective June 7, 2025. The company also appointed Arthu
• Masimo Corp Files 8-K with Regulatory Updates — 8-K · May 27, 2025 Risk: low
  Masimo Corporation filed an 8-K on May 27, 2025, reporting on various events including a Regulation FD Disclosure, other events, and financial statements. The f
• Masimo Corp. Amends 8-K Filing for Material Agreement — 8-K/A · May 7, 2025 Risk: low
  Masimo Corp. filed an 8-K/A on May 7, 2025, to amend a previous filing related to a material definitive agreement. The filing, dated May 6, 2025, concerns an en
• Masimo Corp Files 8-K Report — 8-K · May 6, 2025 Risk: low
  On May 6, 2025, Masimo Corporation filed an 8-K report. The filing indicates "Other Events" as the primary item of disclosure. No specific transactions, financi
• Masimo Corp Files Q1 2025 10-Q — 10-Q · May 6, 2025 Risk: medium
  Masimo Corporation filed a 10-Q for the period ending March 29, 2025. The filing details financial performance and business operations, including information on
• Masimo Corp. Files 8-K on Shareholder Votes — 8-K · Apr 30, 2025 Risk: low
  Masimo Corp. filed an 8-K on April 30, 2025, reporting on matters submitted to a vote of its security holders as of April 29, 2025. The filing details the compa
• Masimo Corp Files Definitive Proxy Statement — DEF 14A · Mar 26, 2025 Risk: low
  Masimo Corporation filed its definitive proxy statement (DEF 14A) on March 26, 2025, for its annual meeting on April 29, 2025. The filing details information re
• 10-K Filing — 10-K · Feb 25, 2025
• Masimo Corp. Files 8-K with Corporate Updates — 8-K · Feb 19, 2025 Risk: medium
  Masimo Corp. filed an 8-K on February 19, 2025, reporting events that occurred on February 12, 2025. The filing indicates potential amendments to articles of in
• Masimo Corp. Announces Director Changes and Officer Compensation — 8-K · Feb 7, 2025 Risk: low
  Masimo Corp. announced on February 6, 2025, the departure of director David Bruce and the election of new director Michael J. Farrell. The company also reported
• Masimo Corp. Reports Board Changes and Executive Compensation Updates — 8-K · Jan 31, 2025 Risk: medium
  Masimo Corp. announced on January 30, 2025, changes in its board of directors and executive compensation arrangements. Specifically, the company reported the de
• Masimo Corp CFO Departs; Settlement Reached — 8-K · Jan 21, 2025 Risk: medium
  Masimo Corp. announced on January 17, 2025, the departure of its Chief Financial Officer, Arthur Dimling, effective immediately. The company has appointed Brad
• Masimo Corp Files 8-K on Financials — 8-K · Jan 16, 2025 Risk: low
  Masimo Corporation filed an 8-K on January 16, 2025, reporting on its results of operations and financial condition. The filing also included Regulation FD disc
• Masimo Corp. Reports Director Departure, New CMO — 8-K · Nov 18, 2024 Risk: medium
  Masimo Corp. announced on November 13, 2024, the departure of Director David Bruce and the appointment of Dr. Michael O'Reilly as Chief Medical Officer. The com
• Masimo Corp Files Q3 2024 10-Q — 10-Q · Nov 6, 2024 Risk: medium
  Masimo Corporation filed its 10-Q for the period ending September 28, 2024. The filing details the company's financial performance and operational status. Key f
• Masimo Corp Files 8-K on Financials — 8-K · Nov 5, 2024 Risk: low
  Masimo Corporation filed an 8-K on November 5, 2024, to report on its results of operations and financial condition. The filing also includes Regulation FD disc
• Masimo Corp Files 8-K: Operations, Personnel Changes, Financials — 8-K · Oct 29, 2024 Risk: medium
  Masimo Corporation filed an 8-K on October 24, 2024, reporting on its results of operations and financial condition. The filing also disclosed the departure of
• Masimo Corp. Announces Board Changes and Officer Compensation — 8-K · Oct 18, 2024 Risk: medium
  Masimo Corp. announced on October 16, 2024, the departure of director Robert E. Yauch and the election of new directors, including Dr. David E. Pearse and Mr. S
• Politan Capital Management Amends Masimo Corp. Stake — SC 13D/A · Sep 25, 2024 Risk: medium
  Politan Capital Management LP, through its affiliates Quentin Koffey and Politan Capital Management GP LLC, has amended its Schedule 13D filing regarding Masimo
• Masimo Corp Files 8-K on Operations, Directors, and Votes — 8-K · Sep 25, 2024 Risk: medium
  Masimo Corporation filed an 8-K on September 25, 2024, reporting on results of operations, director departures, and matters submitted to a vote. The filing also
• Masimo Corp Files Definitive Additional Proxy Materials — DEFA14A · Sep 19, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on September 19, 2024, related to its proxy statement. The filing is a DEFA14A, indicating it's a defin
• Masimo Corp Files Definitive Additional Materials — DEFA14A · Sep 18, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on September 18, 2024, related to its proxy statement. The filing concerns the company's Schedule 14A i
• Masimo Corp Files Definitive Additional Materials — DEFA14A · Sep 17, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on September 17, 2024, related to its proxy statement. The filing indicates no fee was required for thi
• Masimo Corp Files Definitive Additional Proxy Materials — DEFA14A · Sep 16, 2024 Risk: low
  Masimo Corporation filed definitive additional materials related to its proxy statement on September 16, 2024. This filing concerns the company's Schedule 14A i
• Masimo Corp Files Definitive Additional Materials — DEFA14A · Sep 13, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on September 13, 2024, related to its proxy statement. The filing is a definitive additional material,
• Masimo Corp Files Definitive Additional Materials — DEFA14A · Sep 12, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on September 12, 2024, related to its proxy statement. The filing is a DEFA14A, indicating it contains
• Masimo Corp Files Definitive Proxy Materials — DEFA14A · Sep 9, 2024 Risk: low
  Masimo Corporation filed definitive additional materials related to its proxy statement on September 9, 2024. This filing concerns the company's Schedule 14A in
• Masimo Corp Files Definitive Additional Materials — DEFA14A · Sep 6, 2024 Risk: low
  Masimo Corporation filed a Definitive Additional Materials (DEFA14A) on September 6, 2024, related to its proxy statement. This filing does not involve a fee, i
• Masimo Corp Files Definitive Proxy Materials — DEFA14A · Sep 4, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on September 4, 2024, related to its proxy statement. The filing is a definitive proxy statement under
• Masimo Corp Files Definitive Additional Materials — DEFA14A · Sep 3, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on September 3, 2024, related to its proxy statement. The filing is a definitive additional material, i
• Politan Capital Management Amends Masimo Corp Stake — SC 13D/A · Aug 30, 2024 Risk: medium
  Politan Capital Management LP, through its affiliates Quentin Koffey and Politan Capital Management GP LLC, has filed an amendment (No. 14) to its Schedule 13D
• Masimo Corp Files Definitive Additional Materials — DEFA14A · Aug 28, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on August 28, 2024, related to its proxy statement. The filing concerns matters presented for sharehold
• Masimo Corp Files Definitive Additional Materials — DEFA14A · Aug 27, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on August 27, 2024, related to its proxy statement. The filing concerns matters presented to shareholde
• Masimo Corp Files Definitive Additional Proxy Materials — DEFA14A · Aug 26, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on August 26, 2024, related to its proxy statement. The filing concerns the company's Schedule 14A info
• Masimo Corp Files 8-K: Regulation FD Disclosure & Exhibits — 8-K · Aug 16, 2024 Risk: low
  Masimo Corporation filed an 8-K on August 16, 2024, to report a Regulation FD Disclosure and Financial Statements and Exhibits. The filing does not contain spec
• Masimo Corp Files Definitive Additional Materials — DEFA14A · Aug 15, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on August 15, 2024, regarding its proxy statement. The filing, designated as DEFA14A, indicates no fee
• Masimo Corp Files 10-Q for Q2 2024 — 10-Q · Aug 7, 2024 Risk: medium
  Masimo Corporation filed its 10-Q for the period ending June 29, 2024, reporting on its financial performance and business operations. The filing details the co
• Masimo Corp Files 8-K on Financials — 8-K · Aug 6, 2024 Risk: low
  Masimo Corporation filed an 8-K on August 6, 2024, reporting on its results of operations and financial condition. The filing also includes information related
• Masimo Corp Files Definitive Additional Proxy Materials — DEFA14A · Jul 24, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on July 24, 2024, related to its proxy statement. The filing concerns the company's Schedule 14A inform
• Masimo Corp Files Definitive Additional Materials — DEFA14A · Jul 23, 2024 Risk: low
  Masimo Corporation filed definitive additional materials on July 23, 2024, related to its proxy statement. The filing concerns matters to be voted on by shareho
• Politan Capital Management Amends Masimo Stake Filing — SC 13D/A · Jul 17, 2024 Risk: medium
  Politan Capital Management LP, through its affiliates, has amended its Schedule 13D filing regarding Masimo Corporation. The filing, dated July 17, 2024, indica
• Masimo Corp Files 8-K on Shareholder Nominations — 8-K · Jul 16, 2024 Risk: medium
  On July 15, 2024, Masimo Corporation filed an 8-K report detailing shareholder nominations for its upcoming annual meeting. The filing also includes information

Risk Profile

Risk Assessment: Of MASI's 47 recent filings, 1 were flagged as high-risk, 19 as medium-risk, and 27 as low-risk. The overall risk profile suggests relatively low risk with generally favorable filings.

Financial Highlights

Key financial metrics from Masimo CORP's most recent 10-Q filing (Nov 4, 2025):

• Revenue: $1,114.4M
• Net Income: -$219.8M
• EPS: N/A
• Debt-to-Equity: 0.69
• Cash Position: $312.3M
• Operating Margin: 20.3%
• Total Assets: $1,817.5M
• Total Debt: $559.1M

Key Executives

• Micah R. Estlick
• Arthur J. Hill
• Dr. David J. Shulkin
• Mr. Steven J. Shulman
• David Bruce
• Michael J. Farrell
• Arthur Dimling
• Brad Emershaw
• Dr. Michael O'Reilly
• Robert E. Yauch
• Dr. David E. Pearse
• Quentin Koffey

Industry Context

Masimo operates in the highly competitive and rapidly evolving medical technology sector, specifically focusing on non-invasive monitoring solutions. The industry is characterized by significant R&D investment, stringent regulatory oversight (FDA, etc.), and a trend towards integrated digital health solutions. Key competitors include established players in patient monitoring and diagnostic devices, as well as emerging companies focused on specific niche technologies.

Top Tags

sec-filing (16) · proxy-statement (14) · corporate-governance (7) · amendment (4) · filing (4) · financials (4) · governance (4) · shareholder-meeting (4) · compensation (3) · 8-K (3)

Key Numbers

• Net Loss (3 months): $100.4M — Significant decline from $9.8M net income in prior year, primarily due to discontinued operations.
• Net Loss (9 months): $219.8M — Compared to $44.7M net income in prior year, driven by discontinued operations.
• Loss from Discontinued Operations (9 months): $365.6M — Primary driver of the overall net loss, related to the Sound United sale.
• Total Revenue (3 months): $371.5M — Increased by 8.5% from $343.3M in prior year, indicating strong core business growth.
• Total Revenue (9 months): $1,114.4M — Increased by 8.5% from $1,026.8M in prior year, reflecting consistent growth.
• Operating Income (3 months): $83.6M — Increased significantly from $38.2M in prior year, showing improved operational efficiency.
• Operating Income (9 months): $226.1M — Increased from $133.3M in prior year, demonstrating strong performance in continuing operations.
• Cash and Cash Equivalents: $312.3M — Increased from $123.6M at December 28, 2024, bolstered by divestiture proceeds.
• Long-Term Debt: $559.1M — Decreased from $714.3M at December 28, 2024, improving the balance sheet.
• Common Shares Outstanding: 53,713,949 — As of September 27, 2025, reflecting share repurchases.
• Net Loss: $10.0M — Swung from $15.0M net income in Q2 2024 to a loss in Q2 2025.
• Revenue: $450.0M — Decreased by 5.0% from $473.7M in Q2 2024.
• R&D Expenses: $75.0M — Increased by 8.0% in Q2 2025, indicating continued investment.
• Gross Margin: 52.0% — Decreased from 55.0% in Q2 2024, impacted by supply chain disruptions.
• Revenue Decrease: 5.0% — Year-over-year decline in top-line performance.

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