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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

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
19 March 2026

News

Ольга ВорожбитОлександр ДругАнтон КоробейніковІгор ЛозенкоМаксим Назаренко
Sayenko Kharenko leads the market in Chambers Europe 2026
12 February 2026

News

Ольга ВорожбитОлександр ДругОлександр НіколайчикВолодимир СаєнкоДмитро Рябікін
Sayenko Kharenko maintains leading positions in Chambers Global 2026 Guide
30 January 2026

News

Олександр НіколайчикМихайло Гринишин
Sayenko Kharenko shares expertise in Ukraine’s Corporate Governance Reform
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