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Fact Sheet Gemma Wirtschaftsprüfung und -beratung GmbH

Core Company Information
Company Name Gemma Wirtschaftsprüfung und -beratung GmbH
UID CHE-107.822.920
Alternative / previous Names Willy Keller GmbH (until 04.01.2010)
Domicile Warth-Weiningen
Canton TG
Legal Form Limited liability company
Inscription Date 11.09.1997
FAOA Information
FAOA ID 504265
RAB Permission licensed audit expert
FAOA License active (since 08.02.2010)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations EXPERTsuisse
veb.ch
Number of auditors with permission 1  (2.00 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 8.4 years (max.: 9.2 years)

Total number of statutory audit engagements: 2 (Ranked #209 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.

  Schwyz Zürich ∑
Limited corporation 1   1
Association   1 1
∑ 1 1 2

This audit firm is recorded as statutory auditor for 2 deleted entities. These are not included in the table above.

Display client list

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
DillySocks AG CHE-457.921.833 Zürich 07.04.2021 First auditor Warth-Weiningen
The Singularity Group AG CHE-300.711.284 Zürich 05.04.2018 First auditor Warth-Weiningen
Pimentel Kinderbetreuung GmbH CHE-294.020.301 Zürich 29.11.2017 First auditor Warth-Weiningen
ALILEC Stiftung für interkulturelle lateinamerikanische Kurse für Kinder und Jugendliche CHE-109.421.911 Zürich 02.11.2017 Auditor switch Warth-Weiningen
Schweizerischer Verband für Weiterbildung (SVEB) CHE-105.838.821 Zürich 09.06.2017 First auditor Warth-Weiningen
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
Flugplatzgenossenschaft Hausen-Oberamt (FGHO) CHE-103.588.180 Hausen am Albis 09.01.2025 Auditor switch Warth-Weiningen
Hauser-Stiftung CHE-110.172.229 Weggis 21.11.2024 Auditor switch Warth-Weiningen
The Singularity Group AG CHE-300.711.284 Zürich 07.06.2024 Auditor switch Warth-Weiningen
DillySocks AG CHE-457.921.833 Zürich 01.11.2023 Auditor switch Warth-Weiningen
ALILEC Stiftung für interkulturelle lateinamerikanische Kurse für Kinder und Jugendliche CHE-109.421.911 Zürich 20.05.2022 Opting-out Warth-Weiningen