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Vitalii Mainarovych
Senior Associate

Vitalii Mainarovych

Languages
  • Ukrainian
  • English
  • Russian
Social media

Vitalii is a senior cross-border M&A lawyer with CMS in London and a member of the CMS International M&A/Private Equity group. As part of the firm’s Tier 1 International M&A/Private Equity team, Vitalii advises clients on private cross-border M&A transactions governed by English law, complex JVs, and corporate restructurings worldwide.

Over the past decade, Vitalii has worked on transactions spanning more than 40 jurisdictions across Europe, Asia (including Central Asia), Africa, and the Americas - in both highly regulated and emerging markets.

His cross-border practice focuses particularly on AI/digital infrastructure and TMT (with a focus on tech and telco), energy & wider infrastructure, and private equity and institutional investors.

Vitalii has been recognized as a key M&A lawyer by (i) Legal 500 UK 2024-2026 (London/M&A: Upper Mid-Market and Premium Deals, £750m+), with clients commending his commercial approach and “excellent” service, and (ii) Legal 500 CEE/CIS-Ukraine 2025, with clients noting that Vitalii is“quick-witted, smart, result-oriented… with impeccable drafting skills under tight deadlines… exceptional in managing day-to-day aspects of the deal”. He was also named among Ukraine’s Top 30 Under 30 Lawyers at the time.

Vitalii is a Ukrainian-qualified lawyer and is currently in the process of cross-qualifying in England & Wales.

Awards & Recognitions
01
  • Quote
    "Vitalii Mainarovych is exceptional in managing the day-to-day aspects of the deal, always ensuring that the project moved forward efficiently. His drafting skills are impeccable, he is able to produce high-quality drafts under very tight deadlines."
    Legal 500, 2025
  • Quote
    "A rising star is senior associate Vitalii Mainarovych. He is quick-witted, smart and result-oriented."
    Legal 500
  • Quote
    "‘Vitalii Mainarovych is an exceptional corporate lawyer with a firm understanding of common law issues, and who takes a very commercial approach to important matters."
    Legal 500

Relevant experience

  • A consortium led by NJJ Holding, the investment firm owned by Xavier Niel, the founder of leading European telecom group Iliad, and U.S. private equity firm Horizon Capital, on the historic acquisition of Datagroup-Volia (a leading fibre infrastructure and digital services provider) and lifecell (Ukraine's third-largest and fastest-growing mobile operator).
  • Equinor:
    • on the first of a kind swap transaction with bp in the US, following the acquisition by bp in 2020 of 50% of Equinor’s non-operated interests in the Empire Wind and Beacon Wind assets for a total consideration of USD 1.1bn.
    • on its acquisition of 95 MW Lyngsåsa operational onshore wind farm in southern Sweden from SUSI Partners.
  • On a confidential multi USDbn big-ticket oil and gas JV transaction.
  • FF Group, an edge AI and data analytics expert serving the transportation and security markets in more than 30 countries, on its sale to Axis Communications, a wholly owned subsidiary of Canon Inc.
  • A leading European infrastructure private equity firm, on bolt-on energy acquisitions.
  • Amante Capital, on the JV with KKR and Baupost in connection with their USD 1.16bn acquisition of 33 Marriot hotels across the UK.
  • Railpen, one of the largest pension managers in the UK and responsible for managing GBP 34bn of assets, on its acquisition of a 50% shareholding in AGR Power, a UK renewable energy developer transitioning to an IPP and with a substantial pipeline of BESS, Solar, and other renewable projects in the UK and Europe.
  • A leading multi-billion Western European digital infrastructure group in connection with a comprehensive master cooperation agreement relating to the operations of a leading mobile operator’s portfolio of telecom tower assets.
  • On a USD 40m equity investment into Infinity Power, Africa’s largest pure-play renewable energy developer.
  • Northland Power Inc., on its joint venture with Electricity Supply Board with respect to its ScotWind offshore wind portfolio (Spiorad na Mara and Havbredey).
  • A global group focusing on large-scale energy storage solutions, on the JV relating to one of the Europe’s then-largest USD 4.7bn cloud and AI data centre development.
  • InstaDeep on the sale of their AI business to BioNTech for an aggregate consideration of up to GBP 562m.
  • Ooredoo Group on the sale of their telecom business in Myanmar to Nine Communications Pte. Ltd for an enterprise value of USD 579m.
  • Vodafone and Neqsol, on the landmark acquisition of Vega Telecom (one of the largest fixed-line operators of broadband access, fixed and IP telephony, cloud services, data transmission and storage services) from SCM Group.
  • On a major container-terminal joint venture with DP World.
  • On a major joint venture with P&O Maritime with respect to towage services business in Black Sea marine port.
  • On a USD 100m joint venture with Cargill to construct a grain transhipment marine port terminal in Black Sea.
  • Scatec Solar ASA, a Norway-based solar power developer, on acquisition of its multiple projects in Ukraine (including setting up a JV with Rengy Development, one of the largest developers and independent solar power producers in Ukraine).
  • Acciona Energia on entering the Ukrainian market by establishing its business presence, acquisition of solar power plant businesses, creation of joint ventures in Ukraine.
  • EBRD, on its equity investment in the leading micro-financial institution in Tajikistan, Imon International; and on its acquisitions of stakes in Servolux in Belarus and Zabka in Poland.
  • Horizon Capital on the sale of Ciklum, a leading global software engineering and solutions company to George Soros's Ukrainian Redevelopment Fund LP.

Education

2016 – LL.M., Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
2015 – M.Jur., University of Oxford, Oxford, UK
2014 – LL.B., Taras Shevchenko National University of Kyiv, Kyiv, Ukraine

Further reading

  • CMS advises on landmark $100m joint venture with Cargill on Black Sea coast of Ukraine

  • CMS advises EBRD on €25 million equity investment in Żabka

  • CMS advises listed Polish household appliances company, Amica, on the acquisition of the UK-based CDA

  • CMS advises on a landmark financing of a new grain terminal construction project in Yuzhni port

  • CMS advises on landmark transaction which brings P&O Maritime to Ukraine for the first time

Insights by Vitalii

TMT Finance EMEA 2026

28 Jan 2026

CMS advises FF Group on acquisition by Axis Communications

03 Dec 2025 2 min read

CMS advises Equinor on Swedish wind farm acquisition

24 Mar 2025 2 min read

CMS advises Ooredoo Group on the sale of its telecom business in Myanmar to Nine Communications Pte. Ltd for an enterprise value of USD 576m

12 Sep 2022 2 min read
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