Welcome to our dedicated page for MASIMO SEC filings (Ticker: MASI), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on MASIMO's stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.
Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time SEC filing updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into MASIMO's regulatory disclosures and financial reporting.
Hellmann Elisabeth A reported acquisition or exercise transactions in this Form 4 filing.
MASIMO CORP reported that Chief Human Resources Officer Elisabeth A. Hellmann received a grant of 5,985 restricted stock units on March 6, 2026. Each unit represents the right to receive one share of Masimo common stock upon vesting. The award vests in four equal annual installments of 25% on each anniversary of the grant date, aligning her compensation with longer-term company performance. Following this grant, she holds 5,985 restricted stock units directly.
Sampath Anand reported acquisition or exercise transactions in this Form 4 filing.
Masimo Corp executive vice president of operations Anand Sampath received a grant of 6,840 restricted stock units on March 6, 2026. Each RSU represents the right to receive one share of Masimo common stock when it vests. The award vests in four equal annual installments of 25%, and after this grant he holds 6,840 RSUs directly.
Dadswell Charles reported acquisition or exercise transactions in this Form 4 filing.
MASIMO CORP granted EVP and General Counsel Charles Dadswell 10,261 restricted stock units as equity compensation. Each RSU represents the right to receive one share of common stock upon vesting. The award was granted on March 6, 2026 and will vest in four equal annual installments on each anniversary of the grant date.
Young Micah W reported acquisition or exercise transactions in this Form 4 filing.
MASIMO CORP Executive Vice President and Chief Financial Officer Micah W Young reported receiving a grant of 17,671 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, Young holds 17,671 RSUs directly, aligning his compensation further with future Masimo share performance.
Szyman Catherine M. reported acquisition or exercise transactions in this Form 4 filing.
MASIMO CORP reported that CEO and director Catherine M. Szyman received a grant of 39,904 restricted stock units on March 6, 2026. Each RSU represents the right to receive one share of Masimo common stock upon vesting. The award vests in four equal annual installments on each anniversary of the grant date, and all 39,904 RSUs are shown as directly owned following this transaction.
FMR LLC reports beneficial ownership of 2,349,974.52 shares of Masimo Corp common stock, representing 4.5% of the class. The filing (Amendment No. 3 to Schedule 13G/A) shows FMR LLC has sole dispositive power for 2,349,974.52 shares and sole voting power for 2,286,842 shares. Abigail P. Johnson is listed with sole dispositive power for 2,349,974.52 shares.
Masimo Corp EVP & Chief Financial Officer Micah W. Young reported the vesting of 15,000 restricted stock units and related share movements. The vested RSUs converted into 15,000 shares of common stock, with 8,093 shares withheld at $175.35 per share to cover tax obligations, resulting in 6,907 shares delivered. Following these transactions, Young directly owns 25,254 shares of Masimo common stock. These events reflect equity compensation vesting and tax withholding, not open-market buying or selling.
Masimo Corporation and Danaher Corporation disclosed communications and preliminary solicitation materials related to a proposed transaction in which Danaher agreed to acquire Masimo. Masimo and Danaher state they will file Masimo’s proxy statement and mail a definitive proxy card to Masimo stockholders in connection with the stockholder meeting.
The companies caution that the Transaction’s timing and completion are subject to customary conditions, including Masimo stockholder approval and required regulatory clearances, and list typical transactional risks and limits on pre-close engagement.
Masimo Corp executive Micah W. Young reported equity award activity involving company common stock. He acquired 2,034 shares at no cost in connection with the vesting of previously granted performance-based restricted stock units that vested upon achievement of three-year performance goals. To cover related tax withholding obligations, 1,123 shares were disposed of by being withheld by Masimo at a price of $175.22 per share, leaving him with 18,347 shares held directly after these transactions.
Masimo Corporation’s annual report outlines a major strategic shift centered on its core medical-technology platform and a pending sale of the company. Masimo develops noninvasive monitoring, hospital automation and connectivity products built on its Masimo SET and rainbow platforms, sold to hospitals and OEM partners worldwide.
The company completed the sale of its non‑healthcare consumer audio business, Sound United, to Harman International, a Samsung subsidiary, on September 23, 2025, sharpening its focus on healthcare. Masimo has also agreed to be acquired by Danaher: each outstanding share will be converted into the right to receive $180.00 in cash, without interest, if the merger closes.
The merger, expected in the second half of 2026, remains subject to stockholder approval and multiple regulatory clearances, and the risk section highlights that delays, failure to obtain approvals, and deal uncertainty could adversely affect operations. The filing also details extensive regulatory, reimbursement, privacy, and anti‑kickback frameworks governing Masimo’s business, plus key risks tied to intellectual property, OEM and GPO relationships, and government oversight.