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Mr. Adrian Widmer is a Group Chief Financial Officer at Sika AG and a Chairman-Supervisory Board at Sika Finanz AG. He is on the Board of Directors at Sonova Holding AG and Swiss Steel Holding AG. Mr. Widmer was previously employed as a General Manager-Construction Systems by BASF AG, a Chief Financial Officer by BASF Construction Chemicals Europe AG, a General Manager-Construction Systems by Degussa Construction Chemicals Schweiz AG, and a Manager-Market Development by Textron, Inc. He received his graduate degree from the University of Zurich.

Roger Widmer currently works at bibliotheca Switzerland AG, as Head-Finance & Human Resources from 2009 and ROTH AG Gerlafingen, as Head-Purchasing.

Muriel Widmer currently works as a secretary at Gaznat SA.

Urs Widmer is currently the Chairman of Wias AG.
Previously, he was the Chairman & Chief Executive Officer of Widmer-Walty Group.
He also served as a Director at CPH Chemie + Papier Holding AG from 1986 to 2011.
Additionally, he was a Director at Sihl & Eika Papier.

Dieter Matthias Widmer is currently the Chief Executive Officer & Head-Management at Aargauische Kantonalbank.
He is also the Chief Executive Officer at Aargauische Kantonalbank (Invt Mgmt) since 1998.
Additionally, he holds the position of Vice Chairman-Supervisory Board at Pfandbriefzentrale der schweizerischen Kantonalbanken AG since 2019.
Previously, he worked as a Director at Immofonds Schweizerischer Immobilien-Anlagefonds.

Yasmine Widmer is currently the Director of Marketing & Communication at Getaz Romang Holding SA since 2005.
Prior to this, she worked as a Principal at Hartek SA.