CERTIFICATE OF COMPLETION
This is to certify that Juan Sernahas successfully completed the Holcim Academy Course for Sustainable Construction in
Concrete Essentials—Basic Properties of Concretea program offered by Holcim.
Miljan Gutovic
Chief Executive Officer Holcim
Nollaig Forrest
Chief Sustainability Officer Holcim
Holcim Academy Certificate:
Issued December 18, 2024
Valid Certificate ID
6060c3d6a5bb4ba2b675516894d3d186