Dealmakers Dialogues Athens: 2026 M&A Playbook for Greece

Dimitris Tsatsanis is Principal of Strategy & Business Transformation at OTE Group, where he leads corporate innovation and strategic initiatives. With over two decades of experience in the telecom sector, Dimitris has played a pivotal role in shaping OTE’s transformation journey through high-impact M&A, cross-functional restructuring, and new business development.  

Throughout his career, Dimitris has successfully executed major transactions in Greece and across Southeastern Europe. Dimitris is a trusted advisor to senior leadership and Boards, with deep expertise in investment appraisal, digital transformation, and shareholder relations. He has served as a board member of the JEREMIE Fund and Otesat-Maritel.

He holds an MBA from Athens University of Economics & Business, an MSc in Finance from Cass Business School and a BSc in Business Administration from University of the Aegean. 

Michael is a Principal in the Corporate Finance dept at Deloitte, focusing on M&A advisory, valuations and strategic advisory. He works with corporates, founders and investors on transactions in Greece and internationally, supporting them throughout the deal lifecycle. He has experience advising on both sell- and buy-side transactions, as well as carve-outs and strategic partnerships, helping clients make informed decisions and achieve their goals.

Marios is Managing Director and Head of Greece, based in Athens, for Rothschild & Co, one of the world’s largest independent financial advisory firms. In his role, Marios provides advice to leading Greek companies on mergers and acquisitions and on their capital needs and financing strategy.

Prior to Rothschild & Co, Marios was SVP, Corporate Strategy and M&A for Firmenich SA, based in Geneva, one of the world’s leading Flavor and Fragrances companies, designing perfumes and flavors for leading branded consumer goods companies globally.

At Firmenich, Marios was deeply involved in the setting of strategic direction for this leading, privately-held corporation with CHF 4.5 billion of revenue and global reach.

Marios also spent 15 years at Goldman Sachs & Co. across London and New York, in the Investment Banking division where he was ultimately promoted to Managing Director.

During his career, Marios has worked on financial transactions well in excess of €150bn across mergers, equity and debt with experience successfully executing transactions across all major markets globally.

Marios has an AB from Harvard College and an MBA from Columbia Business School.

Zhanina is VP of Sales for Switzerland, CEE, Greece and Türkiye for Datasite. She has been accompanying the transformation to Datasite for more than ten years now and has been growing these markets since 2016. She graduated from IDRAC International School of Management in Lyon, France with a Master‘s degree in International Development Management in 2013. Besides speaking Bulgarian (mother tong), she is also fluent in English, French and German.