Amrize Appoints Mario Gross as President of Building Envelope
Amrize Ltd
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Filing Summary
Amrize Ltd (NYSE: AMRZ) - Leadership Transition
• Event: Appointment of President, Building Envelope • New Appointee: Mario Gross (effective September 11, 2026) • Departing Officer: Jake Gosa (notified resignation on September 6, 2026; 12-month notice period) • Background: Gross previously served as Chief Supply Chain Officer and COO of the Building Envelope business.
Comprehensive Analysis
Executive Summary
On September 11, 2026, Amrize Ltd filed a Form 8-K announcing a leadership transition within its Building Envelope division.
Key Changes
- Resignation: On September 6, 2026, Jake Gosa notified the Company of his decision to resign as President, Building Envelope. This triggered a 12-month termination notice period under his employment agreement extending to September 6, 2027, during which he will remain an employee.
- Appointment: Effective September 11, 2026, the Board of Directors appointed Mario Gross as President, Building Envelope. Gross previously served as Chief Supply Chain Officer since June 2025 and COO of the Building Envelope segment from 2024 to 2025.
Market & Strategic Context
Mario Gross brings prior leadership and operational experience within the Building Envelope division and roles at Holcim and Sika. The transition ensures leadership continuity in one of Amrize's core commercial and residential product divisions.
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