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    Sebastian Okinczyc, PhD

    Sebastian Okinczyc, PhD

    Associate Partner, Head of Polish Desk
    About

    Dr Sebastian Okinczyc is an Associate Partner and Head of Polish Desk. He has over 15 years of experience in corporate finance law, specialising in complex debt financing transactions and cross-border corporate lending.

    He advises both lenders and borrowers, with a particular focus on structuring and negotiating high-value transactions across sectors such as energy, infrastructure, real estate, retail, and telecommunications. Sebastian leads the firm’s Polish Desk, where he strengthens ties with Polish-speaking clients and institutions, facilitating smooth cross-border collaboration.

    At TEGOS, Sebastian works closely with major international financial institutions including the European Investment Bank, Nordic Investment Bank, PKO Bank Polski, Santander, Citibank, and MUFG, especially on large-scale energy and infrastructure projects and innovative financing solutions.

    Known for his sharp legal insight, strategic mindset, and out-of-the-box thinking, Sebastian is a natural problem solver who simplifies the complex. His international mindset and fluency in five languages enable him to serve a diverse client base with precision and cultural fluency.

    The international legal directory IFLR1000 has recognised Sebastian as a “Rising Star” in the banking and finance.

    Sebastian obtained his PhD in 2026, having defended a dissertation examining the challenges of international commercial litigation involving the United Kingdom after Brexit.

    Outside the office, Sebastian is a passionate traveller and a beginner golfer.

    Practice areas
    Industries
    International desks

    CV

    Professional career
    Since 2024

    Associate Partner, law firm TEGOS (formerly TGS Baltic)

    2021 – 2024

    Senior Associate, law firm TGS Baltic

    2017 – 2021

    Senior Legal Counsel, Danske Bank A/S, GSL

    Since 2014

    Visiting lecturer, Vilnius University

    2013 – 2016

    Associate, GLIMSTEDT Lithuania

    2014 – 2016

    Member of the board, Lithuanian Defense and Security Industries Association

    2012 – 2016

    Visiting lecturer, Kazimieras Simonavicius University

    2011 – 2013

    Associate, BNT Attorneys-at-Law

    2011

    Internship (1 month), Northern Ireland Legislative Assembly, Belfast, UK

    2009 – 2010

    Internship in General Commercial Practice Group, Law firm Sutkiene, Pilkauskas & partners

    2009

    Internship in Directorate for relations with National Parliaments (3 months), European Parliament, Brussels, Belgium

    Education
    2026

    Vilnius University, Faculty of Law (PhD, Social Sciences)

    2011

    Corporate Finance Law, graduation with Distinction grade, University of Westminster, UK

    2010

    LLM International and EU Law, Vilnius University

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