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Eminent Practitioners
Provided by Nazar Chernyavsky
Nazar Chernyavsky has been with Sayenko Kharenko for over 20 years. He combines his unique experience in finance and capital markets with a deep understanding of the technology sector, telecom and cybersecurity. Mr Chernyavsky has extensive experience in handling the most complex financing projects in the Ukrainian market, including the first securitisations in Ukraine, Rule 144A share offerings, Tier II Eurobond offerings, UAH-linked LPN issues, etc. In addition, he has the reputation of one of the top IT lawyers in Ukraine, advising investors and start-ups on various aspects of their operations – setting up development offices in Ukraine and introducing employee share plans, acquiring IT businesses and IP assets, raising money through debt or equity, structuring cross-border payments and taxes, etc.
Another important aspect of Nazar’s expertise is development projects, where he leads the work of Sayenko Kharenko’s team under the mandate of international donors in Ukraine, including EBRD, European Commission, UNDP, USAID, World Bank, aimed at improving Ukrainian legislation in critical areas, such as banking and finance, energy, public procurement, securities, etc.
As part of his social responsibility, Mr Chernyavsky has been a member of the International Bar Association Task Force, which developed the Cybersecurity Guidelines for the legal industry globally and keeps working on the international legal standards for cybersecurity applicable to all businesses.
International Bar Association, Co-Chair of the Technology Law Committee
American Chamber of Commerce in Ukraine
European Business Association
International Trademark Association
English, Ukrainian
LL. M., summa cum laude, from Kyiv National Taras Shevchenko University School of International Law
Intercollegiate LL. M. program at Queen Mary College of the University of London
Named the leading Capital Markets, Banking and Finance, Debt Restructuring lawyer for Ukraine by Chambers Europe 2025, IFLR1000, 2025, The Legal 500, 2025, Ukrainian Law Firms 2025, Best Lawyers in Ukraine 2022
Recognised among leading lawyers in Energy & Natural Resources by IFLR1000, 2025 and Ukrainian Law Firms 2025
Named among the notable practitioners in Informational Technologies and Telecommunications by Ukrainian Law Firms 2025
Named Thought Leader in Data – Information Technology in Lexology Index: Data 2026
Highly Recommended in both Finance and Fintech categories by Lexology Index: Banking & Fintech 2026
Named Thought Leader in the Lexology Index – Thought Leaders: Capital Markets 2025
Named Capital Markets Lawyer of the Year by Best Lawyers in Ukraine 2021
Provided by Chambers
Nazar Chernyavsky has a wealth of experience in advising on a variety of financing matters. He is also well versed in handling complex capital markets issues.
23 items provided by Sayenko Kharenko
First Ukrainian Company on NASDAQ: Sayenko Kharenko Advises on Landmark Kyivstar Listing
Sayenko Kharenko is proud to have acted as sole Ukrainian legal advisor to the Kyivstar Group in the business combination with Cohen Circle Acquisition Corp. I, leading to the historic listing of the Kyivstar Group on the NASDAQ Stock Market in the United States.
Sayenko Kharenko advised on landmark USD 22.5 billion consent solicitation by Ukraine
Sayenko Kharenko acted as Ukrainian legal counsel to J.P. Morgan, the solicitation agent in connection with the consent solicitation for 13 series of Ukraine’s outstanding Eurobonds and separate consent solicitation
Sayenko Kharenko invites international communities to help Ukraine in these difficult times
Sayenko Kharenko invites Ukrainian and international communities to help Ukraine in these difficult times. You can help through the Charitable Fund "Breathe", originally established by Sayenko Kharenko's partners to support hospitals during the COVID-19 pandemic.
Sayenko Kharenko advises on the debut USD 825 million ESG Bond issue by Ukrenergo
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas, Deutsche Bank, Goldman Sachs International and Ukreximbank, managers of the debut USD 825 million Eurobond issue by NPC Ukrenergo, the state-owned electricity transmission system operator.
Sayenko Kharenko provided legal support for PGNiG on acquisition of shares in a Ukrainian company
Sayenko Kharenko has acted as a subcontractor of a polish legal counsel – Rymarz Zdort that provided legal support for Polskie Górnictwo Naftowe i Gazownictwo S.A. (“PGNiG”) during its acquisition of a controlling stake in Karpatgazvydobuvannya LLC from ERU Management Services LLC.
Sayenko Kharenko provided legal support for PGNiG on acquisition of shares in a Ukrainian company
Sayenko Kharenko has acted as a subcontractor of a polish legal counsel – Rymarz Zdort that provided legal support for Polskie Górnictwo Naftowe i Gazownictwo S.A. (“PGNiG”) during its acquisition of a controlling stake in Karpatgazvydobuvannya LLC from ERU Management Services LLC.
Sayenko Kharenko advises on USD 300 million Eurobond issue by Ukrainian Railways
Sayenko Kharenko has acted as Ukrainian legal counsel to J.P. Morgan and Dragon Capital, the joint lead managers of the USD 300 million Eurobond issue by Ukrainian Railways, the exclusive state-owned provider of rail transportation services in Ukraine.
Sayenko Kharenko advises on USD 500 million Eurobond tap issue by Ukraine
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas and Goldman Sachs International, the joint lead managers of the USD 500 million Eurobond tap issue by Ukraine.
Sayenko Kharenko advises on USD 700 million debut Eurobond issue by Ukravtodor
Sayenko Kharenko has acted as Ukrainian legal counsel to J.P. Morgan, Dragon Capital and Ukreximbank, managers of USD 700 million notes issuance by the State Road Agency of Ukraine (Ukravtodor). The notes are due 2028, subject to amortising payments starting from 2026.
Sayenko Kharenko has advised on the USD 1.25 billion Eurobond issue by Ukraine
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas, Deutsche Bank, Goldman Sachs and J.P. Morgan, the joint lead managers of USD 1.25 billion 6.875 per cent Eurobond issue by Ukraine.
Sayenko Kharenko advises on USD 300 million Eurobond issue by Interpipe
Sayenko Kharenko has acted as Ukrainian legal counsel to Goldman Sachs International and J.P. Morgan, the joint lead managers of a USD 300 million 5-year 8.375 percent Eurobond issue by Interpipe.
Sayenko Kharenko took part in the preparation of the Systemic Report of the Business Ombudsman Counc
Sayenko Kharenko joined the preparation of the Business Ombudsman Council’s Systemic Report “How Business Can Seek Execution of Court Decisions in Ukraine”.
Sayenko Kharenko has advised on USD 600 million Eurobond tap issue by Ukraine
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas and Goldman Sachs International, the joint lead managers of the USD 600 million Eurobond tap issue by Ukraine.
Sayenko Kharenko helps Ukrainian Parliament on the adequate protection of personal data in Ukraine
Sayenko Kharenko analysed and summarised all relevant criteria, which should be met by Ukraine in order to apply to the EU Commission and obtain a decision on the adequate protection of personal data by Ukraine (the Adequacy Decision).
Sayenko Kharenko advises on the USD 333 million Eurobond issue and cash tender offer by Metinvest
Sayenko Kharenko has acted as Ukrainian legal counsel to Deutsche Bank, Natixis, IMI Intesa Sanpaolo, and Raiffeisen Bank International, joint bookrunners of the new USD 333 million Eurobond issue by Metinvest. The notes have a 7-year maturity and bear interest at 7.65 per cent per annum.
Sayenko Kharenko advised on USD 329 million Eurobond tap issue by Ukraine
Sayenko Kharenko acted as Ukrainian legal counsel to J.P. Morgan, the initial purchaser and bookrunner of the USD 329 million Eurobond tap issue by Ukraine. The additional notes were consolidated with the outstanding USD 1.36 billion 7.75 per cent notes that matured on 1 September 2020.
Sayenko Kharenko advised the EBRD on the entry into ISDA Master Agreement with the NBU
Sayenko Kharenko acted as the Ukrainian legal counsel to the European Bank for Reconstruction and Development (EBRD) on its entry into the 1992 ISDA Master Agreement with the National Bank of Ukraine (NBU), the Ukrainian central bank.
Sayenko Kharenko advised on the USD 2 billion Eurobond issue and related switch tender offer
Sayenko Kharenko has acted as Ukrainian legal counsel to J.P. Morgan and Goldman Sachs International, the joint lead managers of Ukraine’s new USD 2 billion Eurobond issue. The notes have a 12-year maturity and bear interest at 7.253 per cent per annum.
Sayenko Kharenko advised the EBRD on the derivatives and corporate bonds reforms
On 19 June 2020, the Parliament of Ukraine adopted the law “On Amendments to Certain Legal Acts to Facilitate Attraction of Investments and to Introduce New Financial Instruments” (the “Capital Markets Law”), which generally takes effect from 1 July 2021.
Sayenko Kharenko advised on EUR 1 billion Eurobond issue by Ukraine
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas and Goldman Sachs International, the joint lead managers of Ukraine’s new benchmark EUR 1 billion Eurobond issue. The notes were issued for the period of 7 years and bear interest at 6.75 % per annum.
Sayenko Kharenko advises on the landmark EUR 1.25 billion Eurobond issue by Ukraine
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas, J.P. Morgan and Raiffeisen Bank International, the joint lead managers of Ukraine’s record-setting EUR 1.25 billion Eurobond issue.
Sayenko Kharenko supported Raiffeisen Bank Aval on the launch of UAH lending by EBRD
Sayenko Kharenko acted as a legal counsel to Public Joint Stock Company Raiffeisen Bank Aval (Raiffeisen Bank Aval) in connection with UAH 514 million financing launching the UAH lending programme of the European Bank for Reconstruction and Development (EBRD) in Ukraine.
Sayenko Kharenko advised on the landmark Eurobond placement and related tender offer by Ukraine
Sayenko Kharenko acted as Ukrainian legal counsel to BNP Paribas, Goldman Sachs and J.P. Morgan Securities, joint lead managers of the Eurobond issue by Ukraine for the total amount of USD 3 billion.
First Ukrainian Company on NASDAQ: Sayenko Kharenko Advises on Landmark Kyivstar Listing
Sayenko Kharenko is proud to have acted as sole Ukrainian legal advisor to the Kyivstar Group in the business combination with Cohen Circle Acquisition Corp. I, leading to the historic listing of the Kyivstar Group on the NASDAQ Stock Market in the United States.
Sayenko Kharenko advised on landmark USD 22.5 billion consent solicitation by Ukraine
Sayenko Kharenko acted as Ukrainian legal counsel to J.P. Morgan, the solicitation agent in connection with the consent solicitation for 13 series of Ukraine’s outstanding Eurobonds and separate consent solicitation
Sayenko Kharenko invites international communities to help Ukraine in these difficult times
Sayenko Kharenko invites Ukrainian and international communities to help Ukraine in these difficult times. You can help through the Charitable Fund "Breathe", originally established by Sayenko Kharenko's partners to support hospitals during the COVID-19 pandemic.
Sayenko Kharenko advises on the debut USD 825 million ESG Bond issue by Ukrenergo
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas, Deutsche Bank, Goldman Sachs International and Ukreximbank, managers of the debut USD 825 million Eurobond issue by NPC Ukrenergo, the state-owned electricity transmission system operator.
Sayenko Kharenko provided legal support for PGNiG on acquisition of shares in a Ukrainian company
Sayenko Kharenko has acted as a subcontractor of a polish legal counsel – Rymarz Zdort that provided legal support for Polskie Górnictwo Naftowe i Gazownictwo S.A. (“PGNiG”) during its acquisition of a controlling stake in Karpatgazvydobuvannya LLC from ERU Management Services LLC.
Sayenko Kharenko provided legal support for PGNiG on acquisition of shares in a Ukrainian company
Sayenko Kharenko has acted as a subcontractor of a polish legal counsel – Rymarz Zdort that provided legal support for Polskie Górnictwo Naftowe i Gazownictwo S.A. (“PGNiG”) during its acquisition of a controlling stake in Karpatgazvydobuvannya LLC from ERU Management Services LLC.
Sayenko Kharenko advises on USD 300 million Eurobond issue by Ukrainian Railways
Sayenko Kharenko has acted as Ukrainian legal counsel to J.P. Morgan and Dragon Capital, the joint lead managers of the USD 300 million Eurobond issue by Ukrainian Railways, the exclusive state-owned provider of rail transportation services in Ukraine.
Sayenko Kharenko advises on USD 500 million Eurobond tap issue by Ukraine
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas and Goldman Sachs International, the joint lead managers of the USD 500 million Eurobond tap issue by Ukraine.
Sayenko Kharenko advises on USD 700 million debut Eurobond issue by Ukravtodor
Sayenko Kharenko has acted as Ukrainian legal counsel to J.P. Morgan, Dragon Capital and Ukreximbank, managers of USD 700 million notes issuance by the State Road Agency of Ukraine (Ukravtodor). The notes are due 2028, subject to amortising payments starting from 2026.
Sayenko Kharenko has advised on the USD 1.25 billion Eurobond issue by Ukraine
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas, Deutsche Bank, Goldman Sachs and J.P. Morgan, the joint lead managers of USD 1.25 billion 6.875 per cent Eurobond issue by Ukraine.
Sayenko Kharenko advises on USD 300 million Eurobond issue by Interpipe
Sayenko Kharenko has acted as Ukrainian legal counsel to Goldman Sachs International and J.P. Morgan, the joint lead managers of a USD 300 million 5-year 8.375 percent Eurobond issue by Interpipe.
Sayenko Kharenko took part in the preparation of the Systemic Report of the Business Ombudsman Counc
Sayenko Kharenko joined the preparation of the Business Ombudsman Council’s Systemic Report “How Business Can Seek Execution of Court Decisions in Ukraine”.
Sayenko Kharenko has advised on USD 600 million Eurobond tap issue by Ukraine
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas and Goldman Sachs International, the joint lead managers of the USD 600 million Eurobond tap issue by Ukraine.
Sayenko Kharenko helps Ukrainian Parliament on the adequate protection of personal data in Ukraine
Sayenko Kharenko analysed and summarised all relevant criteria, which should be met by Ukraine in order to apply to the EU Commission and obtain a decision on the adequate protection of personal data by Ukraine (the Adequacy Decision).
Sayenko Kharenko advises on the USD 333 million Eurobond issue and cash tender offer by Metinvest
Sayenko Kharenko has acted as Ukrainian legal counsel to Deutsche Bank, Natixis, IMI Intesa Sanpaolo, and Raiffeisen Bank International, joint bookrunners of the new USD 333 million Eurobond issue by Metinvest. The notes have a 7-year maturity and bear interest at 7.65 per cent per annum.
Sayenko Kharenko advised on USD 329 million Eurobond tap issue by Ukraine
Sayenko Kharenko acted as Ukrainian legal counsel to J.P. Morgan, the initial purchaser and bookrunner of the USD 329 million Eurobond tap issue by Ukraine. The additional notes were consolidated with the outstanding USD 1.36 billion 7.75 per cent notes that matured on 1 September 2020.
Sayenko Kharenko advised the EBRD on the entry into ISDA Master Agreement with the NBU
Sayenko Kharenko acted as the Ukrainian legal counsel to the European Bank for Reconstruction and Development (EBRD) on its entry into the 1992 ISDA Master Agreement with the National Bank of Ukraine (NBU), the Ukrainian central bank.
Sayenko Kharenko advised on the USD 2 billion Eurobond issue and related switch tender offer
Sayenko Kharenko has acted as Ukrainian legal counsel to J.P. Morgan and Goldman Sachs International, the joint lead managers of Ukraine’s new USD 2 billion Eurobond issue. The notes have a 12-year maturity and bear interest at 7.253 per cent per annum.
Sayenko Kharenko advised the EBRD on the derivatives and corporate bonds reforms
On 19 June 2020, the Parliament of Ukraine adopted the law “On Amendments to Certain Legal Acts to Facilitate Attraction of Investments and to Introduce New Financial Instruments” (the “Capital Markets Law”), which generally takes effect from 1 July 2021.
Sayenko Kharenko advised on EUR 1 billion Eurobond issue by Ukraine
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas and Goldman Sachs International, the joint lead managers of Ukraine’s new benchmark EUR 1 billion Eurobond issue. The notes were issued for the period of 7 years and bear interest at 6.75 % per annum.
Sayenko Kharenko advises on the landmark EUR 1.25 billion Eurobond issue by Ukraine
Sayenko Kharenko has acted as Ukrainian legal counsel to BNP Paribas, J.P. Morgan and Raiffeisen Bank International, the joint lead managers of Ukraine’s record-setting EUR 1.25 billion Eurobond issue.
Sayenko Kharenko supported Raiffeisen Bank Aval on the launch of UAH lending by EBRD
Sayenko Kharenko acted as a legal counsel to Public Joint Stock Company Raiffeisen Bank Aval (Raiffeisen Bank Aval) in connection with UAH 514 million financing launching the UAH lending programme of the European Bank for Reconstruction and Development (EBRD) in Ukraine.
Sayenko Kharenko advised on the landmark Eurobond placement and related tender offer by Ukraine
Sayenko Kharenko acted as Ukrainian legal counsel to BNP Paribas, Goldman Sachs and J.P. Morgan Securities, joint lead managers of the Eurobond issue by Ukraine for the total amount of USD 3 billion.
Provided by Sayenko Kharenko
Defence and Space
Energy and Utilities
Financial Services
Government and Public Sector
Technology, Media and Telecoms (TMT)