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): October 6, 2026

Navitas Semiconductor Corporation

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (844) 654-2642

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

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

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. ¨

On October 6, 2026, Navitas Semiconductor Corporation (the “Company”) issued a press release announcing the closing of the transactions contemplated by the Merger Agreement (as defined below). A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. Also on October 6, 2026, the Company published a CEO letter providing an update to investors with respect to the Company’s Navitas 2.0 transformation. A copy of the CEO letter is furnished as Exhibit 99.2 and is incorporated into this Item 7.01 by reference. The CEO letter is posted on the Company’s Investor Relations website at https://ir.navitassemi.com, LinkedIn page and X page, along with “reposts” by Chris Allexandre, the Company’s President and Chief Executive Officer, on each of LinkedIn and X. The content of the foregoing websites is not incorporated by reference into this Current Report on Form 8-K.

The information furnished pursuant to Item 7.01 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any other filing of the Company under the Securities Act of 1933, as amended (the “Securities Act”) or the Exchange Act, except as expressly set forth by specific reference in such a filing.

On October 6, 2026 (the “Closing Date”), the Company and Claros, Inc., a Delaware corporation (“Claros”), closed the transactions contemplated by the previously announced Agreement and Plan of Merger (the “Merger Agreement”), by and among the Company, Claros Compass Merger Sub 1 Inc., a Delaware corporation and a wholly-owned subsidiary of the Company (“Merger Sub 1”), Compass Merger Sub 2 LLC, a Delaware limited liability company and a wholly-owned subsidiary of the Company (“Merger Sub 2”), and Shareholder Representative Services LLC, a Colorado limited liability company, solely in its capacity as the representative, agent and attorney-in-fact of the securityholders of Claros.

(d) Exhibits.

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.