Amrize Ltd filed a Form 8-K with the U.S. Securities and Exchange Commission on September 11, 2026, disclosing the resignation of its President, Building Envelope and the appointment of his successor, effective the same date.

Key Highlights

  • Resignation notified: Jake Gosa, President, Building Envelope of Amrize Ltd, notified the company of his decision to resign on September 6, 2026.
  • Notice period: Mr. Gosa's resignation commenced a 12-month termination notice period under his employment agreement, lasting until September 6, 2027, during which he remains an employee.
  • Successor appointed: The Board of Directors appointed Mario Gross as President, Building Envelope, effective September 11, 2026.
  • Press release issued: The company issued a press release on September 11, 2026 announcing these matters, furnished as Exhibit 99.1.
  • Exchange listing: Amrize Ltd Ordinary Shares, par value $0.01 per share, trade on the NYSE:AMRZ.

Leadership Transition in Amrize Ltd's Building Envelope Division

According to the filing, Jake Gosa notified Amrize Ltd on September 6, 2026 of his decision to resign from his role as President, Building Envelope. As disclosed, the notification triggered a 12-month termination notice period under his existing employment agreement. The filing states that this period will last until September 6, 2027, and that Mr. Gosa will remain an employee of the company throughout that time.

On September 11, 2026, the company reported that its Board of Directors appointed Mario Gross to replace Mr. Gosa as President, Building Envelope, with the appointment effective as of September 11, 2026. The filing does not disclose additional details about Mr. Gross's background or the terms of his arrangement in the body of the 8-K.

The filing also notes that a press release covering these matters was issued on September 11, 2026 and furnished as Exhibit 99.1. The company disclosed that the exhibit "shall not be deemed 'filed' for purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section." The 8-K was signed by Denise Singleton, Chief Legal Officer and Corporate Secretary of Amrize Ltd, a company incorporated in Switzerland with principal executive offices located at Grafenauweg 8, Zug 6300.

What Was Disclosed

Amrize Ltd disclosed the resignation of Jake Gosa as President, Building Envelope, effective through a 12-month notice period ending September 6, 2027, and the appointment of Mario Gross to that role effective September 11, 2026.