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Fact Sheet Ostschweizerische Treuhand Zürich AG

Core Company Information
Company Name Ostschweizerische Treuhand Zürich AG
UID CHE-102.503.904
Alternative / previous Names -
Domicile Zürich
Canton ZH
Legal Form Limited corporation
Inscription Date 23.11.1992
FAOA Information
FAOA ID 500640
RAB Permission licensed audit expert
FAOA License active (since 26.10.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations EXPERTsuisse
Number of auditors with permission 12  (23.17 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 9.9 years (max.: 32.1 years)

Total number of statutory audit engagements: 278 (Ranked #33 in Switzerland)

Change in number of audit engagements: +1 (since 31.12.2024), +3 (over the last 12 months)

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

  AG AI AR BE BL BS FR GE GL GR LU NE NW OW SG SH SO SZ TG VD VS ZG ZH ∑
Limited corporation 6 2   6 2 3 2 2 4 1 1 1   1 5 1 3 8 4 1 5 21 105 184
Limited liability company 1                           2     2       2 1 8
Foundation 1   1 1                 1 1 1             1 26 33
Cooperative 2     1 1 2       1         1       1       43 52
Association                                             1 1
∑ 10 2 1 8 3 5 2 2 4 2 1 1 1 2 9 1 3 10 5 1 5 24 176 278

This audit firm is recorded as statutory auditor for 135 deleted entities. These are not included in the table above.

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Related audit firms

Network:

Total number of audit engagements across the network: 307

Direct personal relationship:

Further connections:

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
Switch Systems AG CHE-414.692.179 Dietikon 08.07.2025 First auditor Zürich
Krautli Holding AG CHE-277.531.664 Weiningen (ZH) 01.07.2025 First auditor Zürich
Mietergenossenschaft Insembel CHE-455.940.363 Chur 11.06.2025 First auditor Zürich
Gemeinnützige Baugenossenschaft Jungholz CHE-103.995.823 Zürich 16.05.2025 Auditor switch Zürich
Glaromat AG CHE-108.813.852 Glarus Nord 25.04.2025 Auditor switch Zürich
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
Genossenschaft Hofgarten CHE-107.300.774 Zürich 13.02.2025 Auditor switch Zürich
Ambulante Gastroenterologie Baden AG CHE-384.200.144 Baden 02.12.2024 Auditor switch Zürich
Röntgeninstitut Baden AG CHE-102.360.674 Baden 02.12.2024 Auditor switch Zürich
Baugenossenschaft Union (BGU) CHE-100.697.594 Winterthur 08.11.2024 Auditor switch Zürich
Promo-Fruit AG in Liquidation CHE-103.659.118 Rafz 31.10.2024 Opting-out Zürich