STOCK TITAN

Danaher acquires Masimo (MASI) in all-cash $180-per-share takeover and delisting

Filing Impact
(Very High)
Filing Sentiment
(Neutral)
Form Type
8-K

Rhea-AI Filing Summary

Masimo Corporation has completed its acquisition by Danaher Corporation. At the merger’s effective time, each outstanding Masimo common share (with certain limited exceptions) was cancelled and converted into the right to receive $180.00 in cash per share, without interest.

Masimo is now a wholly owned subsidiary of Danaher, which funded the transaction with cash on hand. In connection with closing, Masimo repaid in full and terminated its December 1, 2025 Credit Agreement, and all related guarantees were released.

Masimo’s common stock ceased trading on Nasdaq before the market opened on the closing date and will be delisted and deregistered following the filing of Form 25 and Form 15. All prior stockholder rights ended, other than the right to receive the cash merger consideration. Masimo’s pre-closing directors resigned, a Danaher designee became director of the surviving corporation, and most officers continued in their roles. Certain executives entered into separation and short-term consulting agreements and will receive previously arranged change-in-control severance benefits.

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Insights

Masimo is taken private by Danaher for $180 per share in cash.

The transaction converts all eligible Masimo common shares into a fixed cash amount of $180.00 per share. This crystallizes value for existing stockholders and ends their ongoing participation in Masimo’s future performance, shifting full economic control to Danaher.

Masimo’s delisting from Nasdaq and planned deregistration via Form 25 and Form 15 mean public reporting obligations under Sections 13 and 15(d) of the Exchange Act will end. The full payoff and termination of the December 1, 2025 Credit Agreement simplifies the capital structure under private ownership.

Governance and management transition is evident: the prior board resigned, a Danaher-appointed director now leads the surviving corporation, and key executives will provide three months of consulting while receiving contractual change-in-control severance. Future disclosures, if any, would come from Danaher as the new owner.

Item 1.02 Termination of a Material Definitive Agreement Business
A significant contract was terminated, which may affect business operations or revenue.
Item 2.01 Completion of Acquisition or Disposition of Assets Financial
The company completed a significant acquisition or sale of business assets.
Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing Securities
The company received a delisting notice or transferred its listing to a different exchange.
Item 3.03 Material Modification to Rights of Security Holders Securities
A change was made that materially affects the rights of existing shareholders (e.g., dividend rights, voting rights).
Item 5.01 Changes in Control of Registrant Governance
A change in control of the company occurred, such as through a merger, takeover, or management buyout.
Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers Governance
Key personnel changes including departures, elections, or appointments of directors and executive officers.
Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year Governance
The company amended its charter documents, bylaws, or changed its fiscal year.
Item 9.01 Financial Statements and Exhibits Exhibits
Financial statements, pro forma financial information, and exhibit attachments filed with this report.
Per-share merger consideration $180.00 per share Cash paid for each eligible Masimo common share at merger
Merger agreement date February 16, 2026 Date of Agreement and Plan of Merger among Masimo and Danaher entities
Closing date June 10, 2026 Date Danaher completed the acquisition of Masimo
Consulting period length 3 months Duration executives will provide consulting services after termination
Credit Agreement date December 1, 2025 All obligations under this Credit Agreement were fully repaid and terminated at closing
Per Share Merger Consideration financial
"converted into the right to receive an amount in cash equal to $180.00 per share, without interest (the “Per Share Merger Consideration”)."
change in control financial
"As a result of the Merger, at the Effective Time, a change in control of the Company occurred and the Company became a wholly owned subsidiary of Parent."
A "change in control" occurs when the ownership or management of a company shifts significantly, such as through a merger, acquisition, or sale of a large part of its assets. This change can impact how the company is run and may influence its future direction. For investors, it matters because it can affect the company's stability, strategy, and value, often signaling potential changes in investment risk or opportunity.
Form 25 regulatory
"requested that Nasdaq file with the SEC a Notification of Removal from Listing and/or Registration on Form 25 the next day"
A Form 25 is an official filing with the U.S. Securities and Exchange Commission used to remove a company's stock or other security from a national exchange list. Investors should care because delisting often means less visibility, lower trading volume and wider price swings—similar to a product moving from a major supermarket to a small local market, which can make buying, selling and valuing the security more difficult.
Form 15 regulatory
"the Company intends to file with the SEC a Certification and Notice of Termination on Form 15 to deregister the Shares"
A Form 15 is a short filing a public company uses with the U.S. Securities and Exchange Commission to stop or pause its routine public reporting requirements when it meets certain legal thresholds (such as a low number of public shareholders) or other qualifying conditions. Investors should care because filing one typically means less public financial information and lower trading liquidity—similar to a shop taking down its public notice board, making it harder to track performance and buy or sell shares.
Credit Agreement financial
"terminated the commitments, under that certain Credit Agreement, dated as of December 1, 2025, by and among the Company, the lenders and issuing banks"
A credit agreement is a written loan contract between a borrower and a bank or other lender that lays out how much money can be borrowed, the interest rate, repayment schedule, fees, and the rules the borrower must follow. For investors, it matters because those terms affect a company’s cash costs, borrowing flexibility and risk of default — similar to how a mortgage’s rules determine a homeowner’s monthly budget and freedom to make changes.
change-in-control severance benefits financial
"each Executive remains entitled to receive his or her respective change-in-control severance benefits in connection with his or her termination"
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

FORM 8-K

 

CURRENT REPORT

 

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

 

Date of Report (Date of Earliest Event Reported): June 10, 2026

 

MASIMO CORPORATION

(Exact name of registrant as specified in its charter)

 

Delaware   001-33642   33-0368882
(State or other jurisdiction
of incorporation)
  (Commission File Number)   (I.R.S. Employer
Identification No.)

 

52 Discovery,
Irvine, California 92618

(Address of principal executive offices, including zip code)

 

Registrant’s telephone number, including area code: (949) 297-7000

 

Not Applicable

Former name or former address, if changed since last report

 

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

 

¨Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
  
¨Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
  
¨Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
  
¨Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

 

Securities registered pursuant to Section 12(b) of the Act:

 

Title of each class   Trading Symbol   Name of each exchange on which registered
Common Stock, $0.001 par value   MASI   The Nasdaq Stock Market LLC

 

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

 

Emerging growth company ¨

 

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

 

 

 

 

 

 

INTRODUCTORY NOTE

 

On June 10, 2026 (the “Closing Date”), Danaher Corporation, a Delaware corporation (“Parent”), completed the previously announced acquisition of Masimo Corporation, a Delaware corporation (the “Company”), pursuant to the Agreement and Plan of Merger, dated as of February 16, 2026 (the “Merger Agreement”), by and among the Company, Parent, and Mobius Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Parent (“Merger Sub”). Pursuant to the terms of the Merger Agreement, on the Closing Date, Merger Sub merged with and into the Company (the “Merger”), with the Company surviving as a wholly owned subsidiary of Parent (the “Surviving Corporation”).

 

The Merger Agreement and the transactions contemplated thereby, including the Merger, were previously described in the Current Report on Form 8-K filed with the Securities and Exchange Commission (the “SEC”) by the Company on February 17, 2026 and the definitive proxy statement filed with the SEC by the Company on April 1, 2026 (the “Proxy Statement”).

 

Item 1.02 Termination of a Material Definitive Agreement.

 

In connection with the consummation of the Merger, on the Closing Date, the Company paid off all obligations owing, and terminated the commitments, under that certain Credit Agreement, dated as of December 1, 2025, by and among the Company, the lenders and issuing banks party thereto and Bank of America, N.A., as administrative agent (the “Credit Agreement”). In connection with the termination of the Credit Agreement, on the Closing Date, all outstanding obligations for principal, interest and fees under the Credit Agreement were paid off in full and all guarantees in respect of any obligations under the Credit Agreement were terminated and released.

 

Item 2.01 Completion of Acquisition or Disposition of Assets.

 

The information set forth in the Introductory Note of this Current Report on Form 8-K is incorporated by reference into this Item 2.01.

 

Pursuant to the Merger Agreement, at the effective time of the Merger (the “Effective Time”), each share of common stock, par value $0.001 per share (“Common Stock”), of the Company (each, a “Share”) issued and outstanding immediately prior to the Effective Time (other than any (i) Shares owned by Parent, Merger Sub or the Company, (ii) Shares owned by any wholly owned subsidiary of Parent (other than Merger Sub) or any wholly owned subsidiary of the Company and (iii) Shares in respect of which appraisal has been duly demanded, and not effectively withdrawn or otherwise waived or lost, pursuant to Section 262 of the General Corporation Law of the State of Delaware) was automatically cancelled, extinguished and converted into the right to receive an amount in cash equal to $180.00 per share, without interest (the “Per Share Merger Consideration”).

 

In addition, pursuant to the Merger Agreement, at the Effective Time:

(i)each option to purchase Shares (each, an “Option”) that was outstanding as of immediately prior to the Effective Time, whether vested or unvested, was automatically cancelled and converted into the right to receive, for each Share subject to such Option, the excess, if any, of the Per Share Merger Consideration over the per share exercise price of such Option, less any applicable tax withholding;
(ii)each restricted stock unit award granted under the Company’s stock plans or otherwise (each, an “RSU”) that was outstanding as of immediately prior to the Effective Time, other than RSUs held by non-employee directors, was assumed by Parent and converted into a number of Parent restricted stock units equal to the product of the number of shares of Parent common stock equal to the number of Shares underlying the RSU immediately prior to the Effective Time multiplied by the quotient of (a) the Per Share Merger Consideration, divided by (b) the volume weighted average trading price per share of Parent common stock for the ten trading day period ending on and including the Closing Date, with the same terms and conditions as applied to such RSU immediately prior to the Effective Time. Following the Effective Time, the converted Parent restricted stock units are subject to partial or full double-trigger acceleration;
(iii)each RSU held by a non-employee director of the Company that was outstanding as of immediately prior to the Effective Time was cancelled and converted into the right to receive the Per Share Merger Consideration; and
(iv)each performance stock unit granted under the Company’s stock plans or otherwise (each, a “PSU”) that was outstanding as of immediately prior to the Effective Time, as determined at target performance, was cancelled and converted into the right to receive the product of (a) the Per Share Merger Consideration and (b) the number of Shares underlying such PSU, without interest and less any applicable tax withholding.

 

 

 

 

The foregoing summary does not purport to be a complete description and is qualified in its entirety by reference to the full text of the Merger Agreement, which is attached hereto as Exhibit 2.1 and is incorporated herein by reference.

 

Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing.

 

The information set forth in the Introductory Note and Items 2.01 and 3.03 of this Current Report on Form 8-K is incorporated by reference into this Item 3.01.

 

On the day prior to the Closing Date, the Company notified The Nasdaq Stock Market LLC (“Nasdaq”) of the expected consummation of the Merger and requested that Nasdaq file with the SEC a Notification of Removal from Listing and/or Registration on Form 25 the next day with respect to delisting and deregistering the Shares under Section 12(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The Common Stock ceased trading prior to the opening of the market on the Closing Date, and will no longer be listed on Nasdaq. Upon effectiveness of the Form 25, the Company intends to file with the SEC a Certification and Notice of Termination on Form 15 to deregister the Shares and suspend the Company’s reporting obligations under Sections 13 and 15(d) of the Exchange Act.

 

Item 3.03 Material Modification to Rights of Security Holders.

 

The information set forth in the Introductory Note and Items 2.01, 3.01 and 5.03 of this Current Report on Form 8-K is incorporated by reference into this Item 3.03.

 

As a result of the Merger, each Share that was issued and outstanding immediately prior to the Effective Time (except as described in Item 2.01 of this Current Report on Form 8-K) was cancelled and converted automatically, at the Effective Time, into the right to receive the Per Share Merger Consideration. Accordingly, at the Effective Time, the holders of such Shares ceased to have any rights as stockholders of the Company, other than the right to receive the Per Share Merger Consideration.

 

Item 5.01 Change in Control of Registrant.

 

The information set forth in the Introductory Note and Items 2.01, 3.01, 3.03 and 5.03 of this Current Report on Form 8-K is incorporated by reference into this Item 5.01.

 

As a result of the Merger, at the Effective Time, a change in control of the Company occurred and the Company became a wholly owned subsidiary of Parent. Parent funded the acquisition with cash on hand.

 

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

 

The information set forth in the Introductory Note and Item 2.01 of this Current Report on Form 8-K is incorporated by reference into this Item 5.02.

 

In connection with the Merger, as of the Effective Time, (i) Catherine Szyman, Michelle Brennan, Quentin Koffey, Wendy Lane, Tim Scannell, and Darlene Solomon each resigned from the board of directors of the Company and from any and all committees thereof on which they served and ceased to be directors of the Company, (ii) the director of Merger Sub (Frank McFaden) immediately prior to the Effective Time became the director of the Surviving Corporation, and (iii) except as described below each of the officers of the Company immediately prior to the Effective Time continued as the officers of the Surviving Corporation.

 

 

 

 

On June 9, 2026, the Company entered into Separation and Consulting Agreements (collectively, the “Separation Agreements”) with each of Catherine Szyman, Gregory Meehan, and Charles Dadswell (each, an “Executive”). Pursuant to the Separation Agreements, each Executive will resign his or her employment with the Company as of the Closing Date. Under the terms of the Separation Agreements, each Executive will provide consulting services to Parent (or its affiliates) for a period of three (3) months following the Closing Date in exchange for a consulting fee determined based on the relevant Executive’s base salary immediately prior to his or her termination, on terms and conditions set forth in the applicable Separation Agreement. In addition, under the Separation Agreements, each Executive remains entitled to receive his or her respective change-in-control severance benefits in connection with his or her termination on the Closing Date in accordance with the terms of such Executive’s pre-existing arrangements with the Company.

 

The foregoing summary of the Separation Agreements does not purport to be complete and is qualified in its entirety by reference to the full text of the form of Separation and Consulting Agreement, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and is incorporated herein by reference.

 

Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

 

The information set forth in the Introductory Note and Item 2.01 of this Current Report on Form 8-K is incorporated by reference into this Item 5.03.

 

Pursuant to the Merger Agreement, at the Effective Time, the Company’s certificate of incorporation was amended and restated in its entirety and as so amended and restated became the certificate of incorporation of the Surviving Corporation, and the bylaws of Merger Sub in effect immediately prior to the Effective Time became the bylaws of the Surviving Corporation, except that references to Merger Sub’s name were replaced with references to the Surviving Corporation’s name. Copies of the amended and restated certificate of incorporation and the bylaws of the Surviving Corporation are filed as Exhibit 3.1 and Exhibit 3.2, respectively, to this Current Report on Form 8-K and are incorporated herein by reference.

 

Item 9.01 Financial Statements and Exhibits.

 

(d) Exhibits.

 

Exhibit Number   Description of Exhibit
2.1+   Agreement and Plan of Merger, dated as of February 16, 2026, by and among Masimo Corporation, Danaher Corporation and Mobius Merger Sub, Inc. (incorporated herein by reference to Exhibit 2.1 to Masimo Corporation’s Current Report on Form 8-K filed with the SEC on February 17, 2026)
3.1*   Amended and Restated Certificate of Incorporation of Masimo Corporation
3.2*   Amended and Restated Bylaws of Masimo Corporation
10.1*   Form of Separation and Consulting Agreement
104   Cover Page Interactive Data File (embedded within the Inline XBRL document)

 

* Filed herewith.
+ Schedules have been omitted pursuant to Item 601(b)(2) of Regulation S-K. The Company agrees to furnish supplementally a copy of any omitted schedule to the SEC upon request; provided, however, that the Company may request confidential treatment pursuant to Rule 24b-2 of the Exchange Act, for any schedules so furnished.

 

 

 

 

SIGNATURES

 

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

 

  MASIMO CORPORATION
   
  By: /s/ Micah Young
    Name: Micah Young
    Title: EVP, Chief Financial Officer
   
Date: June 10, 2026  

 

 

FAQ

What did Danaher pay to acquire Masimo (MASI)?

Danaher agreed to pay cash of $180.00 per Masimo share. Each eligible Masimo common share was cancelled and converted into the right to receive that amount, without interest, when the merger became effective, giving stockholders a fixed cash payout for their holdings.

What happens to Masimo (MASI) common stock after the Danaher merger?

Masimo common stock ceased trading on Nasdaq before the market opened on the closing date. The company requested that Nasdaq file Form 25 to delist the shares and plans to file Form 15 to terminate registration and suspend ongoing SEC reporting obligations.

Is Masimo Corporation (MASI) still a public company after this transaction?

No. After the merger, Masimo became a wholly owned subsidiary of Danaher. Its Nasdaq listing will be removed via Form 25, and Masimo intends to file Form 15 to deregister the shares and end its Exchange Act reporting as a standalone public company.

How was the Masimo (MASI) acquisition by Danaher funded?

Danaher funded the Masimo acquisition with cash on hand. In connection with the closing, Masimo also repaid in full all principal, interest, and fees under its December 1, 2025 Credit Agreement, and related commitments and guarantees under that facility were terminated.

What changes occurred to Masimo’s board and management at closing?

At the merger’s effective time, Masimo’s named directors resigned from the board and its committees. The director of the merger subsidiary became director of the surviving corporation, while most existing officers continued in their roles, subject to specified executive separations and consulting arrangements.

What separation and consulting arrangements did Masimo executives receive?

Masimo entered into Separation and Consulting Agreements with three executives. Each resigned on the closing date and will provide consulting services to Danaher affiliates for three months, receiving a consulting fee tied to prior base salary and previously arranged change-in-control severance benefits.

Filing Exhibits & Attachments

6 documents