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Fact Sheet Widmer Ruesch Consulting GmbH

Core Company Information
Company Name Widmer Ruesch Consulting GmbH
UID CHE-107.640.974
Alternative / previous Names Blattner Consulting Services GmbH
Domicile Reinach (BL)
Canton BL
Legal Form Limited liability company
Inscription Date 31.08.1994
FAOA Information
FAOA ID 503123
RAB Permission licensed audit expert
FAOA License active (since 18.02.2008)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations TREUHAND|SUISSE
Number of auditors with permission 5  (4.40 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 7.2 years (max.: 21.7 years)

Total number of statutory audit engagements: 22 (Ranked #185 in Switzerland)

Change in number of audit engagements: - (since 31.12.2024), +1 (over the last 12 months)

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

  Basel Landschaft Basel Stadt Luzern
Limited corporation 8 6 1 15
Limited liability company 1     1
Foundation 3 3   6
12 9 1 22

This audit firm is recorded as statutory auditor for 3 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
Atz Immobilien AG CHE-102.405.420 Basel 17.01.2025 Auditor switch Reinach (BL)
Aircargo Logistics AG CHE-108.648.145 Basel 03.09.2024 Auditor switch Reinach (BL)
Airport Aviation Security AG CHE-466.168.773 Basel 03.09.2024 Auditor switch Reinach (BL)
Omnia Health Services AG CHE-312.888.541 Oberwil (BL) 25.06.2024 Auditor switch Reinach (BL)
Guerra Clauss Architekten SIA GmbH CHE-333.760.438 Basel 20.12.2023 First auditor Reinach (BL)
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
Lafag Ladenbau AG CHE-108.021.006 Dornach 03.02.2025 Auditor switch Reinach (BL)
Guerra Clauss Architekten SIA GmbH CHE-333.760.438 Basel 15.11.2024 Opting-out Reinach (BL)
Personalfürsorgefonds der Jüdischen Genossenschafts-Metzgerei in Liquidation CHE-109.724.814 Basel 19.09.2024 Auditor switch Reinach (BL)
IMMO FAMILY AG CHE-116.390.782 Aesch (BL) 19.09.2023 Opting-out Reinach (BL)
brenneisen theiss communications ag CHE-108.035.646 Basel 10.12.2020 Opting-out Reinach (BL)