In December 2007, our then partners and directors, Prof. Dr. Martin Klem, WP/StB/FCCA, and Peter Gorontzy, StB and Actuary DAV, set up the business in order to deliver audit and audit related services to their clients through well-experienced and professionally qualified experts.
We serve you as highly qualified Registered Auditors and/or Registered Tax Advisors. In addition to its own people, Fidacta also draws on experienced specialists from the personal network of its partners and employees, if required.
E

Prof. Dr. Martin Klem
Wirtschaftsprüfer [Registered Auditor]
Chartered Certified Accountant (FCCA)
Steuerberater [Registered Tax Advisor]
phone: +49 (0) 431 59076 04
mail:
Chartered Certified Accountant (FCCA)
Steuerberater [Registered Tax Advisor]
phone: +49 (0) 431 59076 04
mail:
Expertise and experience
- responsible auditor in international audits of annual and group financial statements (German GAAP, IFRS and US-GAAP) as well as SOX 404 audits
- audits of internal control systems and process management
- valuation reports and due diligence
- review of premium adjustment clauses in various lines of business in non-life insurance
- Solvency II:
- review of technical provisions
- audit of technical provisions
- system of governance
- review Coordinator for the IASB, leading the review of the German translation of IFRSs
- IFRS translations for the EU Commission (e.g. IFRS 9)
- German GAAP & IFRS training for works councils
- lecturer with the Berufsbildungswerk der Deutschen Versicherungswirtschaft (BWV) e.V. [vocational training centre of the German insurance industry] in Hamburg
Education and career
- since end of 2007 professor in accounting and auditing at Flensburg University of applied sciences
- since 2008 director and shareholder of Fidacta
- 1996 bis 2007 Big-Four audit firm in Hamburg; from 2000 to 2002 secondment to Milton Keynes/UK; Senior Manager and authorised officer
- 1995 to 1996 self-employed advisor
- 1991 to 1994 tax advisor trainee in mid-sized accounting and tax advisor firm in Vienna
- A-levels 1986 in Vienna, studies of business informatics, major in tax, accounting and auditing, Doctor rer. soc. oec. [PhD ] Vienna university, dissertation “The tax-optimal reorganisation” – factors influencing the tax burden of a reorganisation and their tax-minimising parameter constellation in consideration of the new Reorganisation Tax Act 1992

Simone Hehmeyer
Wirtschaftsprüferin [Registered Auditor]
Steuerberaterin [Registered Tax Advisor]
diploma in business administration
phone: +49 (0) 431 59076 05
mail:
Expertise and experience
- transaction advisory services and financial due diligence
- valuation reports
- responsible auditor in international audits of annual and group financial statements (German GAAP, IFRS and UK-GAAP)
- preparation of financial statements and advisory services regarding GoBD [the German principles for properly maintaining and storing books, records and documents in electronic form and for data access]
- international accounting, IFRS advisory
- English-German professional translations (i.a. annual reports and audit reports, IFRS 9, IASB publication of the IFRSs)
- review of premium adjustment clauses in various lines of business in non-life insurance
- Solvency II
- review of technical provisions
- system of governance
- design and optimisation of internal control systems
Education and career
- since 2024 director and shareholder of Fidacta
- from 2011 to 2024 authorised officer of Fidacta
- since 2004 Wirtschaftsprüferin [Registered Auditor]
- since 2000 Steuerberaterin [Registered Tax Advisor]
- from 1996 to 2010 Manager and authorised officer in Assurance and Transaction Services of a Big-Four audit firm in Hamburg
- A-levels 1990 in Bünde, studies of business administration at the University of Bielefeld, major in tax

Dr. Jörg Hüsing
Aktuar DAV/IVS
[Actuary with the Association of German Actuaries]
diploma in mathematics
Telefon: +49 (0) 160 9684 4210
mail:
[Actuary with the Association of German Actuaries]
diploma in mathematics
Telefon: +49 (0) 160 9684 4210
mail:
Expertise and experience
- actuarial auditor for premium adjustment clauses in non-life insurance, including lines of business such as property damage, legal protection, motor, liability and accident
- design and interpretation of premium adjustment clauses from an actuarial perspective
- actuarial reports on employee obligations (pension, jubilees, early retirement) according to German and international accounting standards
- due diligence of corporate pension plans
Education and career
- since 2010 freelancer with Fidacta
- since 2010 director and shareholder of Dr. Hüsing Aktuar GmbH
- from 2003 to 2010 advisory firm in corporate pension plans, Bremen
- from 1998 to 2003 actuarial department of "Big Four" audit firm, Hamburg
- studies of mathematics and Doctor rer. nat. [PhD],
Eichstätt - A-levels 1989 in Vechta

Peter Gorontzy
Aktuar DAV
[Actuary with the Association of German Actuaries]
diploma in mathematics
diploma in economics
phone: +49 (0) 431 59076 03
mail:
[Actuary with the Association of German Actuaries]
diploma in mathematics
diploma in economics
phone: +49 (0) 431 59076 03
mail:
Expertise and experience
- actuarial auditor for premium adjustment clauses in non-life insurance, including lines of business such as property damage, legal protection, motor, liability and accident
- design and interpretation of premium adjustment clauses from an actuarial perspective
- review of reserves in non-life insurance
- system of governance and internal controls
- design of the actuarial function
Education and career
- from 2008 to 2024 director and shareholder of Fidacta
- from 1997 to 2023 member of the “non-life” committee of the DAV [Association of German Actuaries]
- from 2002 to 2014 member of the classification committee (car classification system in motor insurance)
- from 1987 to 2007 „Big Four“ audit firm, Senior Manager und authorised officer. In addition to actuarial services in the non-life insurance sector he performed audits of financial statements in various industries
- A-levels 1978 in Bremen, studies of mathematics and economics in Kiel

Susanne Meibom
Wirtschaftsprüferin [Registered Auditor]
Steuerberaterin [Registered Tax Advisor]
diploma in business administration
phone: +49 (0) 1577 807 3131
mail:
Steuerberaterin [Registered Tax Advisor]
diploma in business administration
phone: +49 (0) 1577 807 3131
mail:
Expertise and experience
- responsible auditor in audits of annual and group financial statements
with a focus on public sector companies, foundations and non-profit organisations - preparation of international annual and group financial statements
- review of premium adjustment clauses in various lines of business in non-life insurance
Education and career
- since 2009 self-employed registered auditor in Norderstedt and freelancer with Fidacta
- since 1998 Wirtschaftsprüferin [Registered Auditor]
- since 1995 Steuerberaterin [Registered Tax Advisor]
- 1988 to 2008 Big-Four audit firm in Hamburg;
Manager and authorised officer - studies of business administration, major in tax, accounting, auditing and law at the University of Hamburg

Heiko Horstmann
Steuerberater [Registered Tax Advisor]
diploma in business administration
phone: +49 (0) 160 938 03 985
mail:
diploma in business administration
phone: +49 (0) 160 938 03 985
mail:
Expertise and experience
- review of premium adjustment clauses in various lines of business in non-life insurance
- German-Danish tax advisory services
- audit of annual financial statements of insurance companies
Education and career
- since 2008 freelancer with Fidacta
- since 1999 self-employed registered tax advisor in Hamburg
- 1993 to 1999 audit department Big-Four audit firm in Hamburg, industrial focus on insurance companies, Manager
- A-levels 1984 in Bersenbrück, insurance salesman IHK 1987, studies of business administration at the Westphalian Wilhelm University of Münster, major in finance and accounting and auditing
Key services
- experienced specialists in digital finance with headquarter in Denmark
- digitisation and automation of important financial processes, such as consolidation, budgeting, reporting by using the AFC platform
- optimisation of decision-making processes through effective data management, transparency and analysis of real-time data
- fast and cost-efficient implementation