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.
The Masimo Corporation (MASI) SEC filings page on Stock Titan provides access to the company e2 80 99s regulatory disclosures as filed with the U.S. Securities and Exchange Commission. Masimo, a Delaware corporation and global medical technology company, reports under Commission File Number 001-33642. Its filings offer detailed insight into financial performance, corporate actions, and material events related to its healthcare-focused monitoring technologies and related operations.
Recent Form 8-K filings document key developments, such as quarterly financial results, guidance updates, and significant transactions. For example, Masimo filed a Form 8-K on November 4, 2025, furnishing a press release that reported third quarter 2025 financial results for its continuing healthcare operations and provided updated full-year 2025 guidance. Earlier, on August 5, 2025, the company filed a Form 8-K to furnish second quarter 2025 results and supplemental financial information.
Masimo e2 80 99s filings also record corporate events beyond earnings. A Form 8-K dated September 23, 2025 describes the completion of the sale of its consumer audio business, Sound United, to Harman International Industries, Incorporated, including the transfer of Masimo e2 80 99s equity interests in Viper Holdings Corporation and related cash consideration. Another Form 8-K filed on August 19, 2025 notes the resignation of a board member, while additional 8-Ks provide unaudited pro forma financial information following the Sound United transaction.
Within these filings, Masimo explains its use of non-GAAP financial measures, outlining adjustments for items such as acquisition-related amortization, business transition and related costs, litigation-related expenses and settlements, realized and unrealized gains or losses, financing-related adjustments, and tax impacts. Investors reviewing this page can use the underlying documents alongside Stock Titan e2 80 99s AI-powered summaries to understand Masimo e2 80 99s reported GAAP and non-GAAP results, the impact of significant transactions, and disclosures about ongoing Apple-related litigation expenses. The filings archive is a primary source for Masimo e2 80 99s official, time-stamped communications with regulators and the market.
Masimo Corporation has agreed to be acquired by Danaher Corporation in a cash merger under an Agreement and Plan of Merger dated February 16, 2026, pursuant to which each eligible share of Masimo common stock will be converted into $180.00 in cash per share.
The special meeting of Masimo stockholders to vote on the Merger Agreement and a non-binding advisory compensation proposal is scheduled for May 1, 2026 (virtual). Shares outstanding were 52,362,808 as of March 31, 2026. Politan Capital Management LP has agreed to vote Covered Shares representing approximately 8.77% of outstanding voting power in favor of the Merger.
Masimo Corp: The Vanguard Group filed Amendment No. 12 to its Schedule 13G/A reporting beneficial ownership of 0 shares of Common Stock (CUSIP 574795100), equal to 0%. The filing states that, following an internal realignment effective January 12, 2026, certain subsidiaries will report ownership separately.
Masimo Corporation is being acquired by Danaher Corporation pursuant to an Agreement and Plan of Merger under which each eligible share of Masimo common stock will be converted into $180.00 in cash per share.
The Board unanimously recommends stockholder approval and has entered a Voting Agreement with Politan Capital (covering 4,589,648 shares). The proxy seeks approval at a virtual special meeting; completion is subject to stockholder approval, regulatory clearances, customary closing conditions and is expected in the second half of 2026. Appraisal rights under Delaware law, treatment of equity awards, a $305,000,000 termination fee, and delisting/deregistration of Masimo common stock upon closing are disclosed.
MASIMO CORP CEO Catherine M. Szyman reported routine equity compensation activity. On March 11, she exercised 2,101 restricted stock units into 2,101 shares of common stock at a conversion price of $0.00 per share, reflecting a scheduled vesting event.
To cover related tax obligations, 1,069 of the newly issued shares were withheld by the company at a price of $175.47 per share, leaving a net increase in her direct common stock holdings. After these transactions, she directly holds 7,605 shares of common stock and 6,306 remaining restricted stock units.
Masimo Corp executive Micah W. Young reported routine equity compensation activity. On March 11, 2026, he exercised 873 restricted stock units, converting them into 873 shares of common stock at an exercise price of $0.00 per share.
These RSUs are part of a 3,495-unit grant awarded on March 11, 2025, which vests in four equal annual installments; the filing reflects the first 25% vesting. To cover related tax obligations, 471 common shares were withheld by Masimo at a price of $175.47 per share.
Following these transactions, Young directly holds 25,656 shares of Masimo common stock and 2,622 unvested RSUs, indicating he retained the net shares from this vesting rather than selling them in the open market.
MASIMO CORP insider entities associated with Politan entered two forward sale contracts referencing MASI common stock. On March 11, 2026, Politan Capital Partners Master Fund LP agreed to deliver 142,681 shares at maturity on August 12, 2026, for an upfront payment of $24,802,095.85 based on a trade price of $175.48 per share. On March 12, 2026, it entered a second forward sale contract for 130,869 shares maturing August 13, 2026, with an upfront payment of $22,749,606 at the same price. In each case, the fund pledged the relevant shares, retained dividend and voting rights, and may extend maturity by one month or increase the number of deliverable shares, with settlement potentially in cash or by delivering shares. Politan Capital Management LP, related general partners, and Quentin Koffey may be deemed beneficial owners of the reported securities but disclaim beneficial ownership except for any pecuniary interest.
Meehan Greg Allen reported acquisition or exercise transactions in this Form 4 filing.
MASIMO CORP Chief Commercial Officer Greg Allen Meehan received a grant of 8,550 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 will vest in equal 25% installments on each anniversary of the grant date over four years. Following this grant, Meehan is reported as directly holding 8,550 RSUs linked to Masimo common stock.
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.
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.