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Fact Sheet TRETOR AG

Core Company Information
Company Name TRETOR AG
UID CHE-108.227.200
Alternative / previous Names H & H Treuhand AG (until 08.12.1999)
Domicile Liestal
Canton BL
Legal Form Limited corporation
Inscription Date 23.02.1995
Takeovers: TRETOR AG Basel (CHE-106.018.967), per 30.06.2016
Treuhand AG Liestal (CHE-107.791.308), per 19.09.2007
FAOA Information
FAOA ID 500336
RAB Permission licensed audit expert
FAOA License active (since 19.11.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (1) TRETOR AG (CHE-302.042.904) in Basel (BS)
Membership in Associations EXPERTsuisse
veb.ch
Number of auditors with permission 17  (21.24 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 8.4 years (max.: 31.4 years)

Total number of statutory audit engagements: 361 (Ranked #21 in Switzerland)

Change in number of audit engagements: +7 (since 31.12.2024), +46 (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 BE BL BS LU NW OW SG SO SZ TG ZG ZH ∑
Limited corporation 9 4 99 72 3 7 1 1 11 1 2   9 219
Limited liability company 2 1 18 10 17     2 2 1   1 1 55
Foundation 1 1 27 32         2       1 64
Cooperative     3 6                 1 10
Association     6 4         1       1 12
Special legal forms     1                     1
∑ 12 6 154 124 20 7 1 3 16 2 2 1 13 361

This audit firm is recorded as statutory auditor for 77 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 361 statutory audits are performed by the branch offices as indicated in the table below.

  AG BE BL BS LU NW OW SG SO SZ TG ZG ZH ∑
Basel   2 9 58   4 1   12       2 88
Liestal 12 4 145 66 20 3   3 4 2 2 1 11 273
∑ 12 6 154 124 20 7 1 3 16 2 2 1 13 361

Show client list for Basel, Liestal.

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
St. Alban Stübli GmbH CHE-439.996.508 Basel 11.04.2025 First auditor Liestal
frau sucht gesundheit CHE-101.659.604 Basel 04.04.2025 First auditor Basel
CHI Classics Basel AG CHE-114.932.413 Basel 11.03.2025 First auditor Basel
Avec Frick GmbH CHE-141.686.547 Frick 28.02.2025 First auditor Liestal
Fürsorge- und Unterstützungskasse des Diakonissen-Mutterhauses St. Chrischona (Schweiz) CHE-109.585.004 Bettingen 26.02.2025 Auditor switch Basel
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
Stiftung Schlagzeug- und Marimbaschule Edith Habraken (SMEH) in Liquidation CHE-113.894.810 Riehen 05.03.2025 Auditor switch Liestal
Barth Offsetdruck AG CHE-106.680.155 Basel 24.12.2024 Opting-out Basel
carwash Tec AG CHE-115.522.443 Oberwil (BL) 24.12.2024 Opting-out Liestal
Delli Car Wash AG CHE-337.851.519 Oberwil (BL) 24.12.2024 Opting-out Liestal
dojo tech AG in Liquidation CHE-368.969.418 Basel 20.12.2024 Opting-out Liestal