
Sorainen‘s corporate, M&A, and employment team advises on a broad spectrum of corporate matters, from internal corporate structures and complex shareholder consolidations, to the acquisition and sale of businesses. The firm has seen a lot of recent activity in mandates surrounding private equity and venture capital, as well as the energy, fintech and TMT arenas. Emphasising the breadth and depth of experience on the bench, the leadership team is comprised of five lawyers: Sergej Butov has extensive experience in the energy sector, Laimonas Skibarka specialises in M&A transactions within the TMT sector, Algirdas Pekšys has a particular interest in corporate governance, while Mantas Petkevičius leads the private equity and venture capital team, and Evaldas Dūdonis leads the regional defence sector with a primary focus on corporate law.
Testimonials
Collated independently by Legal 500 research team.
‘The Sorainen team is distinguished by their exceptional responsiveness, consistently delivering high-quality legal assistance with impressive speed. They are known for their proactive approach, always available to provide expert guidance when needed. What sets them apart is their ability to craft innovative solutions, especially in complex or challenging situations that demand creativity.'
‘The team led by Sergej Butov had an efficient balance of commercial and legal thinking, providing practical advice on how to navigate a jurisdiction which for us was foreign and difficult to penetrate.’
‘Sergej Butov was solid and efficient during negotiations (for a private M&A transaction). We concluded that he did a superior job at moving the process forward and achieving results compared to the opposing counsel from a competing firm.'
- 'The team of associates supporting Sergej Butov were very diligent and efficient.’
‘The team is competent and reacts quickly.’
‘Individuals are pleasant and friendly, highly professional and responsive.’
‘The Sorainen team demonstrated exceptional professionalism and responsiveness. Their solutions were both efficient and accurate, showcasing excellent consulting expertise in problem-solving. While innovations were not necessary in my particular case, their approach to addressing my needs was thorough and highly effective.’
‘Evaldas Dūdonis was extremely supportive and a pleasure to communicate with. He was professional, and straightforward, and I appreciated that it never felt like more hours were being booked than necessary.’
Key clients
- Warburg Pincus
- Nordcurrent
- Gjensidige
- Klett Lernen und Information
- SAPI S.p.a
- Technopolis
- Roland DG
- CV Keskus
- OMG Bubble Tea
- NNL group
- DOJUS group
- Mantinga
- Public Institution Deposit and Investment Insurance
- Nasdaq Vilnius
Work highlights
- Advised the US private equity company Warburg Pincus on investing in the world-leading Lithuanian cyber security company Nord Security.
- Advised the Norwegian non-life insurance company Gjensidige Forsikring on signing a sale agreement for its business in the Baltics with Ergo International, the company that manages Ergo’s international business portfolio.
- Advised the Italian concern SAPI S.p.a. on acquiring a 50% stake in the Cross financing company, which is a holding company for Rietavo veterinarinė sanitarija (Lithuania) and Reneta (Latvia).
Lawyers

Practice head
The lawyer(s) leading their teams.
Sergej Butov, Laimonas Skibarka, Algirdas Pekšys, Mantas Petkevičius, Evaldas Dūdonis