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Fact Sheet OBT AG

Core Company Information
Company Name OBT AG
UID CHE-109.029.855
Alternative / previous Names OBT SA, OBT Ltd
OBT Treuhand AG
Domicile St. Gallen
Canton SG
Legal Form Limited corporation
Inscription Date 19.12.1972
Website https://www.obt.ch
Phone +41 55 222 89 24
Offered services

Audit services

  • limited statutory examination (art. 727a CO)
  • ordinary statutory audit (art. 727 CO)
  • audit of public interest entities (e.g., listed companies)
  • audit of incorporation or capital increase reports (art. 635a and 652f CO)
  • audit of capital decreases (art. 653m CO)
  • audit in relation to early distribution of assets (art. 745 CO)
  • audits in the context of the merger law
  • limited statutory examination according to art. 725a CO
  • other special examinations based on legal requirements (such as in the context of relocations or public bids)
  • reviews (according to ISRE 2400 or ISRE 2410)
  • audit of the equal pay analysis (art. 13d GEA)
  • audit of non-financial reports (such as sustainability reports according to art. 964a CO)

Non-audit services

  • accounting and fiduciary services
  • consulting
  • tax consulting
  • legal advice
  • real estate (fiduciary, management)
  • due diligence
  • valuation services

Covered accounting standards

  • CO (Code of Obligations)
  • Swiss GAAP FER
  • IFRS (International Financial Reporting Standards)
  • HAM2 (Harmonized Accounting Model 2)

Covered languages

  • German
  • French
  • English
  • Italian
FAOA Information
FAOA ID 500149
RAB Permission state-regulated audit firm
FAOA License active (since 11.10.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (13) OBT AG (CHE-373.077.879) in Andelfingen (ZH)  
OBT AG (CHE-334.580.117) in Baden (AG)
OBT AG (CHE-210.232.211) in Basel (BS)
OBT AG (CHE-168.775.770) in Berikon (AG)
OBT AG (CHE-327.526.012) in Chur (GR)
OBT AG (CHE-323.201.462) in Köniz (BE)
OBT AG (CHE-307.177.931) in Lachen (SZ)
OBT AG (CHE-485.195.747) in Neuhausen am Rheinfall (SH)
OBT AG, Zweigniederlassung Rapperswil SG (CHE-193.282.619) in Rapperswil-Jona (SG)
OBT AG (CHE-248.888.710) in Schwyz (SZ)
OBT AG, Filiale St. Gallen (CHE-406.591.524) in St. Gallen (SG)
OBT AG (CHE-334.233.957) in Weinfelden (TG)
OBT AG (CHE-384.364.751) in Zürich (ZH)
OBT AG (CHE-399.743.258) in Appenzell (AI)
OBT AG (CHE-146.882.156) in Au (SG) (SG)
OBT AG (CHE-215.974.544) in Bern (BE)
OBT AG, Zweigniederlassung Buchs SG (CHE-455.360.450) in Buchs (SG) (SG)
OBT AG (CHE-377.425.583) in Frauenfeld (TG)
OBT AG, Zweigniederlassung Gossau SG (CHE-289.898.315) in Gossau (SG) (SG)
OBT AG (CHE-358.596.480) in Wädenswil (ZH)
OBT AG (CHE-457.478.430) in Winterthur (ZH)
OBT AG (CHE-269.654.359) in Zug (ZG)
Membership in Associations EXPERTsuisse
Number of auditors with permission 50  (26.24 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 11.2 years (max.: 34.1 years)

Total number of statutory audit clients: 1'312 (Ranked #5 in Switzerland)

Change in number of audit engagements: +2 (since 31.12.2025), +4 (over the last 12 months)

Number of audit clients listed on a Swiss stock exchange: 2 (thereof 0 in the SMI, 0 in the SMI Expanded and 0 in the SPI)

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 JU LU NE NW SG SH SO SZ TG TI UR VD VS ZG ZH ∑
Limited corporation 101 1 14 36 7 11 1 9 14 13 3 14 1 1 166 15 5 56 111 3 2 4 1 38 285 912
Limited liability company 4 1 2 4 1 1 1 1 1 1   3 1   16 2 1 6 6     3 1 2 25 83
Foundation 18   2 18 1 11 1   2     1     42 3   6 19         2 95 221
Cooperative 2               1           6       4       1   16 30
Association     1 5   2       1   1     12   1 1 2     1   1 35 63
Special legal forms                 1                   1           1 3
∑ 125 2 19 63 9 25 3 10 19 15 3 19 2 1 242 20 7 69 143 3 2 8 3 43 457 1'312

This audit firm is recorded as statutory auditor for 497 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 1'312 statutory audits are performed by the branch offices as indicated in the table below.

  AG AI AR BE BL BS FR GE GL GR JU LU NE NW SG SH SO SZ TG TI UR VD VS ZG ZH ∑
Baden 76     6 3 9   1       3   1 2   1 1 2         7 23 135
Basel           1                                       1
Berikon                                               1 3 4
Chur                   3                               3
Köniz       30     1 2     3           1 1       1   1   40
Lachen                                                 1 1
Neuhausen am Rheinfall                               7     1           2 10
Rapperswil-Jona 1     1   3     13 2   1 2   42   1 32 1   2     2 41 144
Schwyz                       2           23               25
St. Gallen 1 1 9 4 1 1     1 7   1     71 2 1 3 21 2       5 28 159
St. Gallen 2 1 10 4 1 1 1 1 2 2   4     109 1 1 1 15     3 1   24 184
Weinfelden                             5 2     88       1   6 102
Zürich 45     18 4 10 1 6 3 1   8     13 8 2 8 15 1   4 1 27 329 504
∑ 125 2 19 63 9 25 3 10 19 15 3 19 2 1 242 20 7 69 143 3 2 8 3 43 457 1'312

Show client list for Baden, Basel, Berikon, Chur, Köniz, Lachen, Neuhausen am Rheinfall, Rapperswil-Jona, Schwyz, St. Gallen, St. Gallen, Weinfelden, Zürich.

Related audit firms

Network:

Total number of audit engagements across the network: 1'688

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
Rivi Nutrition AG CHE-373.523.620 Rothrist 11.09.2026 First auditor Zürich
Fasoon AG CHE-286.383.196 Appenzell 02.09.2026 First auditor St. Gallen
ADRA Schweiz CHE-106.036.540 Zürich 01.09.2026 First auditor Zürich
Future Skills Rheintal CHE-444.160.792 Rebstein 24.08.2026 First auditor St. Gallen
ENTRA AG CHE-442.774.167 Rapperswil-Jona 21.08.2026 Auditor switch Baden
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
HRG Hotels Swiss Services AG CHE-149.963.650 Küsnacht (ZH) 07.09.2026 Discontinued Zürich
John Baker Klusplatz AG CHE-233.674.034 Zürich 20.08.2026 Auditor switch Zürich
Personalvorsorgestiftung der Haag-Streit Gruppe Köniz CHE-109.772.612 Köniz 10.08.2026 Auditor switch Köniz
Modual AG CHE-305.459.293 Ingenbohl 27.07.2026 Discontinued Schwyz
Sauter, Bachmann AG CHE-101.446.505 Glarus 17.07.2026 Auditor switch Rapperswil-Jona