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2026 Edition
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Linked Reviews
Financial and corporate
MFW Fiałek is a leading Polish transactional boutique specialising in M&A and private equity investments across Central and Eastern Europe. Founded in 2014 and based in Warsaw, the firm operates a partner-led model focused exclusively on transactional work for private equity sponsors, strategic investors and high-growth businesses. The practice is led by founder Mirosław Fiałek and associate partner Rafał Siemieniec, supported by a strong team of transactional lawyers.
Key clients
Culligan International, Grant Thornton, Jet Investment, Lindström Group, Orkla Food Ingredients
Highlights
In M&A, the team advised Grant Thornton Poland on its integration into the multinational Grant Thornton Advisors platform backed by New Mountain Capital. The transaction involved the incorporation of the Polish firm into a global advisory, tax and audit platform with operations across the Americas, Europe, the Middle East and the Asia-Pacific region.
The firm acted as lead counsel to Value4Capital in its acquisition of Univio, a Poland-based company with a German subsidiary.
The team also advised JET Investment, a private equity fund, on the acquisition of a majority stake in Plastiwell International S.A., a leading manufacturer of plastic products for the automotive, industrial and sports-recreation sectors. It involved a complex acquisition in a regulated industrial sector, including merger control clearance before the Polish Competition Authority (UOKiK) and advice on acquisition financing.
Testimonials
“We appreciated their pragmatic approach, responsiveness and solid understanding of transaction dynamics. The team was reliable, communicated clearly and provided consistent support throughout the process.” – Private equity
“The team demonstrated great attention to detail, was highly responsive and remained fully committed to helping us successfully close the transaction.” – Private equity
“The team worked with full commitment and consistently fought to protect the client’s interests, both during contract negotiations and after the transaction had been completed.” – Private equity
“MFW supported us as lead legal adviser on the complex sale of our companies, which included the acquisition of shares in the investor’s company. The transaction involved an American investor and a private equity fund, making the adaptation of a standard transaction structure to Polish law particularly demanding. Thanks to the team’s outstanding expertise, deep understanding of the commercial aspects of the transaction and extraordinary commitment, including work outside normal business hours and on weekends, the transaction was completed within the expected timeframe. We particularly valued their precise communication, openness and commercial approach.” – M&A
“The team demonstrated hands-on expertise, took ownership of the project and proactively drove the counterparty’s workstreams forward. Strong partner involvement and the high quality of deliverables were especially valued.” – M&A
“The team adopted a holistic approach and demonstrated practical expertise across all aspects of the transaction, which spanned three jurisdictions.” – M&A
“A key strength of the team was its project management capability, including supervising document flows, maintaining communication between stakeholders, sharing strategic observations and guiding the sellers throughout every stage of the transaction. The consistently high quality of work was particularly impressive.” – M&A
“The team demonstrated strong commitment, creativity and an ability to meet demanding deadlines.” – M&A
“The team was professional, responsive and proactive throughout the engagement.” – M&A
“MFW Fiałek combined professionalism, efficiency and outstanding support throughout the transaction. Their experience on cross-border M&A matters involving Poland and foreign investors was evident in the way they managed the process. The team provided technically excellent yet highly practical, business-oriented advice, making complex issues easy to understand and address. Their ability to coordinate a transaction involving a French buyer and entities in both Germany and Poland, while keeping all stakeholders aligned and the transaction on schedule, was particularly impressive.” – M&A
“The team worked with full commitment to protect the client’s interests both during contract negotiations and after the transaction. Mirosław Fiałek’s personal involvement throughout the process was especially valued.” – Projects
Key clients
Culligan International, Grant Thornton, Jet Investment, Lindström Group, Orkla Food Ingredients
Highlights
In M&A, the team advised Grant Thornton Poland on its integration into the multinational Grant Thornton Advisors platform backed by New Mountain Capital. The transaction involved the incorporation of the Polish firm into a global advisory, tax and audit platform with operations across the Americas, Europe, the Middle East and the Asia-Pacific region.
The firm acted as lead counsel to Value4Capital in its acquisition of Univio, a Poland-based company with a German subsidiary.
The team also advised JET Investment, a private equity fund, on the acquisition of a majority stake in Plastiwell International S.A., a leading manufacturer of plastic products for the automotive, industrial and sports-recreation sectors. It involved a complex acquisition in a regulated industrial sector, including merger control clearance before the Polish Competition Authority (UOKiK) and advice on acquisition financing.
Testimonials
“We appreciated their pragmatic approach, responsiveness and solid understanding of transaction dynamics. The team was reliable, communicated clearly and provided consistent support throughout the process.” – Private equity
“The team demonstrated great attention to detail, was highly responsive and remained fully committed to helping us successfully close the transaction.” – Private equity
“The team worked with full commitment and consistently fought to protect the client’s interests, both during contract negotiations and after the transaction had been completed.” – Private equity
“MFW supported us as lead legal adviser on the complex sale of our companies, which included the acquisition of shares in the investor’s company. The transaction involved an American investor and a private equity fund, making the adaptation of a standard transaction structure to Polish law particularly demanding. Thanks to the team’s outstanding expertise, deep understanding of the commercial aspects of the transaction and extraordinary commitment, including work outside normal business hours and on weekends, the transaction was completed within the expected timeframe. We particularly valued their precise communication, openness and commercial approach.” – M&A
“The team demonstrated hands-on expertise, took ownership of the project and proactively drove the counterparty’s workstreams forward. Strong partner involvement and the high quality of deliverables were especially valued.” – M&A
“The team adopted a holistic approach and demonstrated practical expertise across all aspects of the transaction, which spanned three jurisdictions.” – M&A
“A key strength of the team was its project management capability, including supervising document flows, maintaining communication between stakeholders, sharing strategic observations and guiding the sellers throughout every stage of the transaction. The consistently high quality of work was particularly impressive.” – M&A
“The team demonstrated strong commitment, creativity and an ability to meet demanding deadlines.” – M&A
“The team was professional, responsive and proactive throughout the engagement.” – M&A
“MFW Fiałek combined professionalism, efficiency and outstanding support throughout the transaction. Their experience on cross-border M&A matters involving Poland and foreign investors was evident in the way they managed the process. The team provided technically excellent yet highly practical, business-oriented advice, making complex issues easy to understand and address. Their ability to coordinate a transaction involving a French buyer and entities in both Germany and Poland, while keeping all stakeholders aligned and the transaction on schedule, was particularly impressive.” – M&A
“The team worked with full commitment to protect the client’s interests both during contract negotiations and after the transaction. Mirosław Fiałek’s personal involvement throughout the process was especially valued.” – Projects