Senior Associate

Vitalii Mainarovych

Languages

Ukrainian
English
Russian

Social media

Vitalii is a Ukrainian qualified Senior Corporate/M&A Associate 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/PE team, Vitalii advises clients on private cross-border M&A transactions governed by English law, complex JVs, and intricate corporate restructurings across Europe and beyond (having worked on deals in over 35 countries).

His practice focuses on Energy & Infrastructure, Digital Infrastructure and TMT, and Private Equity.

Vitalii has been recognized as a key M&A lawyer by (i) Legal 500 UK 2024 and 2025 (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 ‘exceptional in managing the day-to-day aspects of the deal’.

Additionally, Vitalii has been listed by Legal 500 Ukraine as a Rising Star in M&A for both 2021 and 2022, and - separately - listed by Yurydychna Gazeta (one of Ukraine’s leading legal rankings) among the “Top 30 Under 30 Lawyers” in Ukraine.

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

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
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 Ukrainian fibre infrastructure and digital services provider) and lifecell (the country’s third-largest and fastest-growing mobile operator).
Amante Capital, on the JV with KKR and Baupost in connection with their $1.16bn acquisition of 33 Marriot hotels across the UK.
Railpen, one of the largest pension managers in the UK and responsible for managing £34 billion 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.
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 group focusing on large-scale energy storage solutions, on the joint venture with respect to one of the Europe’s largest 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 $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

sectors

Energy & Climate Change Infrastructure & Projects Private Equity TMT - Technology, Media & Telecommunications

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Vitalii Mainarovych

Languages

Social media

Relevant experience

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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