CERTIFICATE OF COMPLETION
This is to certify that Anastasios Kolliashas successfully completed the Holcim Academy Course for Sustainable Construction in
Introduction to Sustainable Constructiona program offered by Holcim.
Miljan Gutovic
Chief Executive Officer Holcim
Carmen Diaz
Chief People and Sustainability Officer Holcim
Holcim Academy Certificate:
Issued October 8, 2026
Valid Certificate ID
f4f2c97843034b8a91bee476b6639e17