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Oleksiy Demyanenko specialises in handling complex cases and transactions, which require strategic multidisciplinary coordination.

 

Main areas of work:

  • Corporate and M&A: cross-border investments and M&A, venture capital and legal support of fundraising process, joint ventures, market entry into Ukraine, pre-M&A corporate restructurings and reorganisations, exit strategies, corporate governance advice, IPOs, shareholders and post-M&A conflicts and disputes, and general corporate support. Mr. Demyanenko is a Co-Head of the Corporate and M&A department at Asters
  • Banking and Finance: international project and trade finance, secured and syndicated lending, capital markets, debt restructuring, legal support to major lenders and borrowers in high-profile Ukrainian debt transactions

 

Additional areas of expertise:

  • Gaming: licensing, certification support, compliance with regulatory gaming requirements, market entry by international operators, agreements with hotels, advertisement, enforcement action, inspections, B2B and B2C regimes, online and ground operations
  • Aviation: aircraft sale, purchase, lease, fractional ownership, management and finance transactions, insurance claims, employment of pilots, arrest and repossession of the aircraft, daily airlines support and complex cross-border aviation disputes. He is actively involved in lawmaking activity and, in particular, advised the State Aviation Administration of Ukraine on implementation of the Cape Town Convention and preparation of regulations on the IDERA and authorization codes. Team of lawyers led by Mr. Demyanenko has obtained the first IDERA in Ukraine and procured debut Ukrainian registration of international interests under the Cape Town Convention

Mr. Demyanenko is praised by clients for his "efficient deal management and hands-on involvement", "understands what the client needs, and what the client wants to achieve" and is "easy to work with, very responsive and proposes practical solutions to complex problems" (Chambers & Partners, Europe)

Recognition:
  • recommended lawyer in corporate/M&A, Chambers Global 2026 and Chambers Europe 2026
  • a leading partner in corporate, commercial and M&A, The Legal 500: EMEA 2026
  • a notable practitioner in corporate/M&A, Ukrainian Law Firms 2025. A Handbook for Foreign Clients
  • highly regarded lawyer in M&A, IFLR1000 2025
  • recommended in aviation finance and aviation contentious, Lexology Index 2025
  • recommended lawyer in corporate/M&A, Chambers Global 2026 andChambers Europe 2026
  • a leading partner in corporate, commercial and M&A, The Legal 500: EMEA 2026
  • a notable practitioner in corporate/M&A, Ukrainian Law Firms 2025. A Handbook for Foreign Clients
  • highly regarded lawyer in M&A, IFLR1000 2025
  • recommended in aviation finance and aviation contentious, Lexology Index 2025
  • recommended lawyer in gaming, Lexology Index 2025
  • recommended lawyers in banking and finance, capital markets and M&A, Best Lawyers 2022
  • holder of Lexology Client Choice Award 2021, 2020 (Aviation, Ukraine)

  • a notable practitioner in aviation, Ukrainian Law Firms 2019. A Handbook for Foreign Clients
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Languages:
English, Ukrainian, Russian
Representative experience:
  • advised Horizon Capital, a private equity firm with USD 1.8 billion under management, on the (i) exit from Yarych, one of Ukraine's leading confectionary producers (brands Maria, Petit Beurre, The Crackers, and others); and (ii) co-investment with the International Finance Corporation in Miratech, a leading next-generation technology services provider
  • advised Sobro on the acquisition of the majority shareholding in the supply chain management company vChain
  • advised Checkr on the acquisition of the background screening provider GoodHire
  • advised NetNation, a leading provider of white-label web solutions for business service providers, on acquisition of Yola, an AI-powered website builder with over 15 million users worldwide
  • advised Dobrobut, a leading Ukrainian network of private medical centers, on its acquisition of Boris medical center
  • advised DFC in connection with a 10-year loan portfolio guaranty for ProCredit Bank for a total of USD 28 million to support the financing of small and medium-sized enterprises in Ukraine
  • advised European Lithium on its acquisition through a Deposit Guarantee Fund auction of approximately USD 200 million face-value claims of Prominvestbank against Velta Holding and related obligors
  • advised Horizon Capital, a private equity firm with USD 1.8 billion under management, on the (i) exit from Yarych, one of Ukraine's leading confectionary producers (brands Maria, Petit Beurre, The Crackers, and others); and (ii) co-investment with the International Finance Corporation in Miratech, a leading next-generation technology services provider
  • advised Sobro on the acquisition of the majority shareholding in the supply chain management company vChain
  • advised Checkr on the acquisition of the background screening provider GoodHire
  • advised NetNation, a leading provider of white-label web solutions for business service providers, on acquisition of Yola, an AI-powered website builder with over 15 million users worldwide
  • advised Dobrobut, a leading Ukrainian network of private medical centers, on its acquisition of Boris medical center
  • advised DFC in connection with a 10-year loan portfolio guaranty for ProCredit Bank for a total of USD 28 million to support the financing of small and medium-sized enterprises in Ukraine
  • advised European Lithium on its acquisition through a Deposit Guarantee Fund auction of approximately USD 200 million face-value claims of Prominvestbank against Velta Holding and related obligors
  • advised Creative Group in connection with a USD 255 million syndicated loan facility from PJSC Ukrsotsbank, a member of Unicredit Group, VTB Capital PLC, Erste Group Bank AG and Societe Generale
  • advised J&T Banka, a.s., a leading Czech private bank, in connection with multiple financing projects in Ukraine for the acquisition of class A commercial real estate
  • advised Bank of America Merrill Lynch, The Royal Bank of Scotland, UBS Investment Bank and Dragon Capital on the 250 million USD debut issue of Eurobonds by Mriya Agro Holding
  • advised Citigroup, Credit Suisse Securities (Europe) Limited, Goldman Sachs International, Sberbank CIB, Dragon Capital (Cyprus) Limited and UniCredit Bank Austria AG on the placement of 400 million USD 9.45% notes on the Irish Stock Exchange by Mriya Agro Holding
  • advised EasyDate on its initial offering of shares on the London Stock Exchange's Alternative Investment Market, the first Ukrainian IT sector IPO on the international capital markets
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