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AI brief of an SEC Form 8-K · Amrize Ltd (AMRZ)

Amrize names Mario Gross president of Building Envelope after Jake Gosa's resignation

Neutral Impact 3 of 5 leadership Written later

Amrize Ltd said its board appointed Mario Gross as President, Building Envelope, effective September 11, 2026, replacing Jake Gosa, who notified the company of his resignation on September 6, 2026. Gosa remains an employee through a 12-month termination notice period ending September 6, 2027. The filing does not report any financial results or guidance changes.

Key points

  • Mario Gross, previously Chief Supply Chain Officer and a former Building Envelope COO, takes over effective September 11, 2026.
  • Jake Gosa gave notice on September 6, 2026, starting a 12-month termination notice period through September 6, 2027.
  • The company's Chairman and CEO Jan Jenisch praised Gross's operational expertise in the press release.

The filing

CompanyAmrize Ltd (AMRZ)
Form8-K, current report
Filed with the SECSep 11, 2026, 4:15 PM ET
Accession number0001140361-26-036349

Items reported: 5.02 Director / Officer Change7.01 Regulation FD Disclosure

Read the filing on SEC.gov ↗

Written by AI on Nov 9, 2026, 11:46 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on September 11, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.