Fact Sheet Audit Suisse AG

Average engagement duration: 6.5 years (max.: 26.3 years)

Total number of statutory audit clients: 164 (Ranked #71 in Switzerland)

Change in number of audit engagements: +2 (since 31.12.2025), +21 (over the last 12 months)

Details regarding the distribution of the audit engagements across legal forms and cantons are depicted in the table below.

This audit firm is recorded as statutory auditor for 25 deleted entities. These are not included in the table above.

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Direct personal relationship:

• a&o kreston audit ag (CHE-102.312.698), 183 audit engagements
• BDO AG (CHE-105.952.747), 6602 audit engagements
• Audit Treuhand AG (CHE-100.983.841), 11 audit engagements
• Alfa Treuhand- und Revisions AG (CHE-101.902.845), 21 audit engagements
• Contrag Consulting + Treuhand AG (CHE-102.103.574), 6 audit engagements
• Dascon AG (CHE-106.823.880), 38 audit engagements
• AG Giger Treuhand (CHE-107.073.928), 9 audit engagements
• Gasser Wepf & Partner AG (CHE-107.433.932), 30 audit engagements
• advanto wirtschaftsprüfung ag (CHE-107.795.275), 71 audit engagements
• Fides Experta AG (CHE-141.060.170), 64 audit engagements

Further connections:

• A & O Treuhand- und Wirtschaftsprüfung GmbH (CHE-105.060.719), 0 audit engagements
• Confia Baden AG (CHE-108.378.017), 0 audit engagements