Roofing Vet to Lead Amrize’s Bldg Envelope Biz

CHICAGO & ZUG, Switzerland – Amrize, a $12 billion provider of professional building supplies, has named Mario Gross President, Building Envelope, effective September 11, 2026.

He succeeds Jake Gosa, who is stepping down from the role and is committed to a smooth transition.

Gross has been a member of Amrize’s Executive Committee as its Chief Supply Chain Officer since the company’s listing on the NYSE in June 2025.

He previously served as Chief Operating Officer of the Building Envelope business from 2024 to 2025, where he led operations to establish the segment as a leading provider of commercial and residential roofing, weatherproofing and insulation systems.

Prior to that, he served in various commercial and operational roles of increasing responsibility at Holcim and Sika.

“Mario is an exceptional leader with deep operational expertise, understanding of our Building Envelope business and a track record of delivering results,” said Jan Jenisch, Chairman and CEO. “I am excited to welcome Mario as President of Building Envelope and look forward to working with him in his new role as we continue to deliver for our customers, drive operational performance and deliver long term, profitable growth.

“I thank Jake for his contributions at Amrize and we wish him well in his future endeavors.”

Amrize (NYSE: AMRZ) is a partner of choice for professional builders with advanced branded solutions from foundation to rooftop. With over 1,000 sites and a highly efficient distribution network, its 19,000 teammates uniquely serve every construction market from infrastructure, commercial and residential to new build, repair and refurbishment.

Amrize achieved $11.8 billion in revenue in 2025 and is listed on the New York Stock Exchange and the SIX Swiss Exchange.

Learn more at amrize.com.