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.
Masimo Corporation’s SEC filings document material-event disclosures for a medical technology company focused on noninvasive patient monitoring, hospital automation, connectivity and remote monitoring. The filing record includes Form 8-K reports for operating and financial results, Regulation FD materials, exhibits, material agreements, shareholder voting matters, governance matters, capital-structure disclosure and clinical or regulatory disclosure categories.
The company’s filings also document completed corporate actions, including the disposition of the Sound United consumer audio business and related pro forma financial information. Transaction-related filings cover formal agreements, proxy and voting materials, litigation-related disclosures, risk language and other public-company reporting items without changing the company’s healthcare technology identity.
MASIMO CORP director Darlene J. S. Solomon reported dispositions tied to the closing of Masimo’s merger with Danaher Corporation. On June 10, 2026, all 3,015 shares of Masimo common stock held directly by her were canceled and converted into the right to receive $180.00 in cash per share, as part of the merger consideration.
On the same date, 1,119 restricted stock units granted to her as a non-employee director were also canceled and converted into the right to receive cash at the same $180.00 per-share merger consideration. Following these issuer dispositions, the Form 4 shows she no longer holds Masimo common stock or related RSUs.
Masimo Corporation director Timothy J. Scannell reported the cash-out of his equity in connection with Masimo’s merger with Danaher Corporation. On June 10, 2026, 2,608 shares of Masimo common stock were disposed of to the issuer at $180.00 per share, leaving no common shares directly held.
At the same effective time of the merger, 1,119 restricted stock units held as a non-employee director were canceled and converted into the right to receive the same $180.00 per-share merger consideration in cash. These RSUs represented the unvested portion of an award granted on April 23, 2026.
Masimo Corporation director Wendy E. Lane disposed of her equity in connection with the company’s merger with Danaher Corporation. On June 10, 2026, 2,608 shares of Masimo common stock were canceled and converted into the right to receive cash at $180.00 per share under the merger terms.
On the same date, 1,119 restricted stock units held by Lane were also canceled and converted into the right to receive the same $180.00 per share cash consideration. Following these transactions, Lane held no remaining Masimo common stock or RSUs, as Masimo became a wholly owned subsidiary of Danaher.
Politan Capital’s fund restructured its Masimo exposure through the termination of two forward sale contracts. A Cayman Islands fund managed by Politan had agreed to deliver 142,681 and 130,869 MASI common shares under March 11 and March 12, 2026 forward contracts.
In return for entering these contracts, the fund previously received upfront payments of $24,802,095.85 and $22,749,606, based on a trade price of $175.48 per share. Following a merger, both contracts terminated on June 10, 2026, and the fund paid the counterparty $25,682,580.00 and $23,556,420.00, calculated at $180.00 per share. The filing is made jointly by several Politan entities and Quentin Koffey, who may be deemed beneficial owners but each disclaims beneficial ownership except for any pecuniary interest.
MASIMO CORP insiders associated with Politan Capital reported dispositions tied to the Danaher merger closing. On June 10, 2026, 4,590,873 shares of Masimo common stock were canceled in the merger and converted into the right to receive $180.00 per share in cash.
On the same date, 1,119 restricted stock units linked to Masimo common stock were also canceled and converted into cash equal to the same per-share merger consideration. Following these transactions, the filing shows no remaining Masimo common shares or related derivatives held by the reporting persons.
Masimo Corporation’s merger with Danaher Corporation closed on June 10, 2026, triggering a cash-out of director Michelle Brennan’s equity. She disposed of 9,309 shares of common stock to the issuer at $180.00 per share in connection with the merger terms, rather than through an open-market sale.
At the effective time of the merger, her 1,119 restricted stock units were canceled and converted into the right to receive the same $180.00 per share cash consideration. Following these issuer-related dispositions, the filing shows zero shares and zero RSUs remaining in this account.
Masimo Corporation executive Paul Hataishi reported issuer dispositions connected to the completion of Masimo’s merger with a Danaher subsidiary. On June 10, 2026, Mobius Merger Sub merged into Masimo, which continued as a wholly owned subsidiary of Danaher.
At the effective time of the merger, each outstanding share of Masimo common stock was canceled, extinguished and converted into the right to receive $180.00 in cash per share, without interest. Hataishi’s 13,317 common shares were disposed of to the issuer at this per share merger consideration, leaving no remaining Masimo common stock directly held.
On the same date, multiple unvested Masimo restricted stock unit (RSU) awards were also disposed of to the issuer and, under the merger terms, were assumed by Danaher and converted into RSUs of Danaher. The conversion used the $180.00 per share merger consideration and a Danaher ten-day volume‑weighted average price of $183.33.
Masimo Corporation executive Anand Sampath reported the disposition of all his Masimo equity in connection with the company’s merger into Danaher. On June 10, 2026, 33,901 shares of Masimo common stock were canceled and converted into the right to receive $180.00 per share in cash at the merger’s effective time.
On the same date, all of Sampath’s outstanding stock options were canceled and converted into cash equal to any excess of the $180.00 per-share merger consideration over each option’s exercise price. His restricted stock units were assumed by Danaher and converted into Danaher RSUs based on the $180.00 consideration and a $183.33 volume-weighted average Danaher share price. Following these transactions, he no longer holds Masimo common shares, options, or Masimo RSUs.
Masimo Corporation’s Chief Commercial Officer Greg Allen Meehan reported the merger-driven disposition of his equity awards in connection with Danaher’s acquisition of Masimo. On June 10, 2026, when Mobius Merger Sub merged into Masimo, the company became a wholly owned subsidiary of Danaher.
At the merger’s effective time, Masimo restricted stock units were assumed by Danaher and converted into Danaher RSUs based on the ratio of the $180.00 per-share merger consideration to Danaher’s $183.33 ten-day volume-weighted average price. Outstanding Masimo stock options were canceled and converted into cash equal to the excess of $180.00 over the option exercise price per share, less taxes. Performance-based restricted stock units were canceled and converted into the right to receive $180.00 in cash per underlying share, before tax withholding.
MASIMO CORP’s Chief Human Resources Officer, Elisabeth A. Hellmann, reported the automatic disposition of her company equity in connection with Masimo’s merger with Danaher. On June 10, 2026, Masimo became a wholly owned subsidiary of Danaher after Mobius Merger Sub merged into Masimo.
At the merger’s effective time, each share of Masimo common stock was canceled and converted into the right to receive $180.00 in cash per share, without interest. Hellmann’s unvested restricted stock units were assumed by Danaher and converted into Danaher RSUs based on a ratio using the $180.00 per share merger consideration and Danaher’s $183.33 volume‑weighted average price.
Outstanding Masimo stock options were canceled and converted into a cash right equal to the excess of $180.00 over the option exercise price, per underlying share, less taxes. Performance-based restricted stock units were canceled and converted into the right to receive $180.00 in cash per underlying share, less taxes. Following these transactions, the Form 4 shows Hellmann with no remaining Masimo equity holdings.