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Fact Sheet Trustzone AG

Core Company Information
Company Name Trustzone AG
UID CHE-112.712.042
Alternative / previous Names Trustzone GmbH, Trustzone SARL, Trustzone SAGL, Trustzone Ltd liab. Co
Domicile Dietikon
Canton ZH
Legal Form Limited corporation
Inscription Date 06.01.2006
FAOA Information
FAOA ID 500540
RAB Permission licensed audit expert
FAOA License active (since 19.11.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations -
Number of auditors with permission 2  (0.50 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 6.5 years (max.: 6.5 years)

Total number of statutory audit clients: 1 (Ranked #212 in Switzerland)

Change in number of audit engagements: -6 (since 31.12.2025), -6 (over the last 12 months)

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

  Zurich ∑
Limited corporation 1 1
∑ 1 1

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
Ehrat Immo AG CHE-158.306.416 Dietikon 03.12.2019 First auditor Dietikon
Prim-Pac AG CHE-107.903.599 Geroldswil 07.11.2018 Auditor switch Dietikon
Prim-Pac Holding AG CHE-109.862.706 Geroldswil 07.11.2018 Auditor switch Dietikon
Resco AG in Liquidation CHE-114.516.078 Hausen (AG) 07.09.2017 First auditor Dietikon
André Rutschi AG CHE-106.364.091 Regensdorf 08.12.2016 Auditor switch Dietikon
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
Assco Engineering AG CHE-106.032.565 Dietikon 05.06.2026 Auditor switch Dietikon
Ehrat AG CHE-109.425.949 Dietikon 02.06.2026 Auditor switch Dietikon
Ehrat Immobilien AG CHE-101.334.510 Dietikon 02.06.2026 Auditor switch Dietikon
ncw ag CHE-105.268.289 Dietikon 02.06.2026 Auditor switch Dietikon
gyselroth GmbH CHE-108.534.004 Zürich 01.06.2026 Auditor switch Dietikon