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General info

Oleksiy Koltok is an attorney-at-law, partner in Sayenko Kharenko’s Litigation Dispute Resolution practice with over 20 years of legal experience. Oleksiy specialises in comprehensive defence of clients’ interests in complex litigation across all sectors of the economy. 

Oleksiy has considerable experience in representing national and international clients in Ukrainian courts of all instances and specialisations, defending them in corporate disputes, disputes with state and regulatory authorities, commercial disputes, consumer protection disputes, real estate and construction disputes, labour disputes, debt collection disputes, enforcement proceedings and bankruptcy, etc. Mr. Koltok also has extensive experience of representing national and international clients in Ukrainian courts of all instances and specialisations. 

Oleksiy also has extensive experience in pre-trial and out-of-court dispute resolution, including advising clients on developing litigation defence strategies, countering raiding, property protection, concluding amicable settlement agreements, appeals to the European Court of Human Rights, as well as assistance in negotiations, etc. 

Recognition

Recommended in Dispute Resolution in Ukraine by Chambers Global 2026 (Band 3) and Chambers Europe 2026 (Band 3)

Recognised among the leading partners in Dispute Resolution in Ukraine by The legal 500, 2026

Recognised among the leading lawyers in Dispute Resolution by Benchmark Litigation 2025

Recognised among the leading practitioners for Litigation by Ukrainian Law Firms 2025

Recognised among the leading lawyers in Litigation by Best Lawyers in Ukraine 2022

Lawyer of the Year in Commercial Law by Lawyer of the Year 2019, Ukrainian Advocates’ Association

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Professional membership and involvement

Ukrainian Bar Association, Committee on Procedural Law

American Chamber of Commerce in Ukraine

European Business Association

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Admissions

Attorney-at-Law, admitted to the Kyiv City Bar (since 2017)

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Education

Specialist’s degree in law from National Academy of Internal Affairs of Ukraine

Specialist’s degree in finance from Taras Shevchenko National University of Kyiv

Media & Insight Oleksiy Koltok

14 May 2026
Сергій ПротивеньЖанна Заєць
International register of damage for Ukraine now open to businesses
27 April 2026
Сергій ПротивеньЖанна Заєць
New system of state supervision (control): what businesses should know
23 April 2026
Сергій ПротивеньЖанна Заєць
Parliament updated the procedure for the enforcement of court decisions and digitised certain stages of enforcement proceedings
30 March 2026

News

Олександр ДругАнтон КоробейніковІгор ЛозенкоАнжела МахіноваМаксим НазаренкоОлександр Ніколайчик
Sayenko Kharenko once again achieves full practice recognition in The Legal 500 EMEA 2026
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