


CERTIFICATE OF COMPLETION
This is to certify that Gustavo Leytonhas successfully completed the Holcim Academy Course for Sustainable Construction in
Introduction to Sustainable Constructiona program offered by Holcim.

Miljan Gutovic
Chief Executive Officer Holcim
Nollaig Forrest
Chief Sustainability Officer Holcim
Holcim Academy Certificate:
Issued October 3, 2024
Valid Certificate ID
a8526122ff614133848d8a566232f983