Mathilde Ostertag, GSK Stockmann (Luxembourg)

Mathilde Ostertag

Mathilde Ostertag heads the tax practice at GSK Stockmann in Luxembourg. She is lawyer in Luxembourg (since 2008). She studied at the Université Robert Schuman in Strasbourg (France) and at the Freie Universität in Berlin (Germany). She holds a Master’s degree and post graduate degree in corporate and tax law, tax specialization (DJCE). She is licensed specialist for Tax Law as well (Certificat d’études spécialisées en Droit et fiscalité du commerce international).
Prior to GSK Stockmann in Luxembourg, Mathilde Ostertag practiced within a Benelux and an international law firm in Luxembourg for the past nine years. Her areas of expertise include domestic and international tax law, in particular tax planning, private equity, real estate, start-ups and other foreign investment structures.  She also has in-depth knowledge on capital market transactions, cross-border restructurings, i.a. inbound and outbound migrations, mergers and acquisitions and debt restructuring. 
She is fluent in French, English, German and Portuguese. Mathilde Ostertag is a board member of the Ladies in Law Luxembourg Association (“LILLA”) which aims at actively promoting gender diversity and women in senior positions in the legal sector.  She is also a member of the International Fiscal Association (“IFA”) and the International Bar Association (“IBA”); she publishes regularly

09.35 - 10.20

Luxembourg as a PE hub: why the trend is accelerating

The PE fund business relies on administration and operations teams that can react fast. As strong growth figures testify, Luxembourg’s reputation as a reliable hub from which to serve the European alternative fund market has gone global. Many local expert practitioners and service providers work together seamlessly to ensure the best outcome for deals in any market. Panellists discuss what is needed to continue and even grow the trend.


10.50 - 11.35

Embrace technology, maximise efficiency

Cloud-based solutions, machine learning, blockchain, etc. – how necessary, difficult, beneficial is it really to embark upon the technology (r)evolution?


11.35 - 11.55

Secondaries: the wind of change?

Interview: Shift from a niche market to a functional and active market place with sophisticated players.


14.10 - 14.50

Private debt – opportunities and challenges

Negative yields force investors to plunge into riskier debt. Technologies are shaking the traditional way of doing business. What is the investment climate for private debt in the key European markets? How will the industry face the next downturn when it finally arrives? EU regulations are still to be tested in a downturn.


14.50 - 15.25

Tax aspects of PE – a lifelong learning experience

ATAD, BEPS Action point 6 (substance) and DAC Mandatory Disclosure Rules- how to deal with the new EU rules in practice. What are the impacts on PE fund structuring?


16.15 - 16.55

PE for the greater Good

Private equity investors aim at creating thriving businesses. They are no strangers to long-term strategies, which makes ESG aspects and active ownership crucial elements of their investments decisions. What about the financial rewards? Are PE and ESG really a match made in heaven?