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Fact Sheet Rhenum Treuhand AG

Core Company Information
Company Name Rhenum Treuhand AG
UID CHE-107.976.948
Alternative / previous Names -
Domicile Altstätten
Canton SG
Legal Form Limited corporation
Inscription Date 28.02.1985
Takeovers: BHR Treuhand AG (CHE-107.929.558), per 01.02.2010
FAOA Information
FAOA ID 501684
RAB Permission licensed audit expert
FAOA License active (since 27.11.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations EXPERTsuisse
Number of auditors with permission 3  (10.67 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 14.4 years (max.: 33.5 years)

Total number of statutory audit clients: 32 (Ranked #177 in Switzerland)

Change in number of audit engagements: -3 (since 31.12.2025), -4 (over the last 12 months)

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

  AR GL SG SZ ZH ∑
Limited corporation   1 24 1   26
Limited liability company 1   1   1 3
Cooperative     2     2
Association     1     1
∑ 1 1 28 1 1 32

This audit firm is recorded as statutory auditor for 19 deleted entities. These are not included in the table above.

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Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
K. Lienhard Transport AG CHE-106.910.728 Glarus Nord 25.06.2025 Auditor switch Altstätten
Forst AG Oberes Rheintal CHE-146.873.298 Rüthi (SG) 03.06.2025 First auditor Altstätten
Bilfit AG CHE-108.055.790 Diepoldsau 06.12.2024 Auditor switch Altstätten
Auto RiKu AG CHE-242.324.780 Rheineck 16.08.2024 First auditor Altstätten
Pütz Security Swiss AG CHE-282.619.164 Sennwald 20.03.2024 First auditor Altstätten
Discontinued audit engagements
The following audit engagements were lost recently, either to a competitor, due to auditor resignation or due to an opting out.
 
Client Name Client UID Domicile End Date Reason Auditor Branch
Thomas Seitz AG CHE-108.370.441 Au (SG) 08.10.2026 Auditor switch Altstätten
Inset AG, Industrie-Elektro-Technik CHE-107.999.814 Oberriet (SG) 29.05.2026 Auditor switch Altstätten
Baugeschäft Heeb AG CHE-108.074.178 Altstätten 21.01.2026 Auditor switch Altstätten
Silvestri AG CHE-107.285.560 Altstätten 04.11.2025 Auditor switch Altstätten
Scheiwiler Haustechnik AG CHE-104.653.319 Altstätten 11.09.2025 Auditor switch Altstätten