Of Counsel

Yvan Stempnierwsky is a member of the Tax Law practice at Arendt & Medernach where he is in charge of the Financial Reporting and Accounting Standards practice.

He advises clients on the accounting treatment of complex transactions (hybrid financial instruments, derivatives, revenue recognition issues, consolidation, leasing transactions, real estate, restructuring, acquisition of shares, share buy-backs, accounting requirements for funds, FX transactions, etc.) under Luxembourg Generally Accepted Accounting Principles (GAAP), Belgian GAAP, European Accounting Law,  International Financial Reporting Standards (IFRS), Not-for Profit Accounting Law and Public Sector Accounting Law.

Yvan also provides assistance in mergers & acquisitions (including due diligence processes, contract drafting and post-acquisition issues), in tax matters and in real estate structures (Public-Private Partnerships). Yvan’s expertise includes providing assistance to listed companies during IFRS enforcement by the Financial Services and Markets Authority (FSMA - Belgium) and the Commission de Surveillance du Secteur Financier (CSSF - Luxembourg).

Yvan’s practice also includes advising boards of directors: he provides them with second opinions, advice on conversion from national GAAP to IFRS and assistance with internal reporting under IFRS.

He has been a member of the Brussels Bar since 2008 and was admitted by the Luxembourg Bar in 2013 to practice in Luxembourg under his Belgian professional title.

Yvan is a member of various working groups of the Luxembourg Accounting Standards Board and a regular facilitator of IFRS training with the Luxembourg Institute of Auditors.

Yvan is a lecturer in Financial Reporting Law at the Solvay Brussels School of Economics and Management of the Université Libre de Bruxelles and at the University of Louvain.

Yvan Stempnierwsky holds a Master's degree in law from the Université de Bruxelles (Belgium) as well as a Master's degree in Economic law from the Université Libre de Bruxelles (Belgium).

Languages: Dutch, English, French.

ESMA Guidelines Alternative Performance Measures

​In June 2015 the European Securities and Markets Authoritypublished guidelines on Alternative Performance Measures. The Guidelines replace the previous CESR guidelines of October 2005 and apply to relevant disclosures made on or after 3 July 2016.

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Yvan Stempnierwsky, lawyer expert in Financial Reporting and Accounting Standards, joins Arendt & Medernach

​Arendt & Medernach is pleased to announce the arrival of Yvan Stempnierwsky, lawyer expert in Financial Reporting and Accounting Standards, as Of Counsel at the firm.

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