Mergers and acquisitions

Mergers and Acquisitions (M&A) – Legal and Transactional Advisory

MFW Fiałek advises on mergers, acquisitions, and corporate reorganisations in Poland, as well as cross-border transactions. We represent strategic and financial investors, private equity and venture capital funds, business owners, and target companies themselves. We also advise on acquisition financing.

We provide comprehensive legal support at every stage: from structuring the transaction and conducting due diligence, through drafting documentation and leading negotiations, to obtaining necessary regulatory clearances, closing, and post-closing settlement. We also advise on corporate changes associated with post-acquisition integration.

M&A Experience

Our team has gained experience advising buyers, sellers, and target companies. We have advised funds on investments and exits, and their portfolio companies on add-on acquisitions. We have also supported founders and family business owners in business sales, attracting equity partners, and planning succession.

Our experience includes:

  • sale and acquisition of shares and stock, including shares of companies listed on the Warsaw Stock Exchange (share deals);
  • sale and acquisition of businesses, organized parts of enterprises (ZCP), and individual assets (asset deals);
  • management buyouts (MBOs) and leveraged buyouts (LBOs);
  • shareholders’ and stockholders’ agreements (SHAs) and joint ventures;
  • mergers, demergers, and corporate transformations.

Scope of Services

Transaction Structuring

We help select the optimal transaction structure, considering the parties’ objectives, the legal standing of the target business, and tax implications. Among other things, we analyze the differences between share and asset purchases, principles governing the transfer of rights and obligations, and liability for past business operations.

Due Diligence and Document Preparation

We assess the target’s legal status – including corporate matters, commercial contracts, employment, real estate, intellectual property, regulatory compliance, and litigation. In our due diligence report, we identify risks and propose solutions for reflecting them in the transaction terms.

For sellers, we conduct vendor due diligence and assist in resolving legal issues prior to investor review. We organize documentation in a virtual data room (VDR) and manage q&a sessions regarding its contents.

Preliminary Documentation

We draft and negotiate non-disclosure agreements (NDAs), letters of intent (LoIs), non-binding offers (NBOs), and term sheets. In these documents, we establish the framework for discussions, negotiating exclusivity, and information disclosure.

Transactional Agreements

We draft share purchase agreements (SPAs), asset purchase agreements (APAs), shareholders’ agreements (SHAs), and all related transaction documentation. We negotiate purchase price mechanisms and adjustments, including locked box, completion accounts, and earn-out arrangements.

We negotiate representations and warranties, specific indemnities, liability caps, and claim thresholds. We draft disclosure letters and determine their impact on seller liability.

If the parties remain co-shareholders, we establish governance rules, share transfer restrictions, and exit strategies. This includes tag-along and drag-along rights, rights of first refusal, and deadlock resolution mechanisms.

Regulatory Approvals

We determine the consents and notifications required to complete the transaction. We prepare merger control filings and represent clients before the President of the Office of Competition and Consumer Protection (UOKiK). We also verify sector-specific regulatory requirements that may impact the acquisition and ongoing operations.

Closing and Settlement

We coordinate pre-closing actions, execution of documentation, and price settlement. We support corporate body changes, registry filings, and agreed post-closing actions.

Project Management and Fee Structures

We coordinate the work of tax and financial advisors and, if needed, assist clients in selecting appropriate external teams. We conduct the legal due diligence in-house, while tax and financial analyses are handled by dedicated specialists. We incorporate all findings into the transaction documentation.

In our proposals, we clearly define the scope of work, fee assumptions, and billing principles. We can agree on a capped fee for the specified scope, defining circumstances where hourly rates may apply. Throughout the project, we keep clients informed about budget utilization – including weekly progress reports, depending on client requirements.

We utilize established legal templates and analysis tools, including AI-driven solutions, with all outputs verified by our lawyers. This allows us to draft documentation efficiently and dedicate greater focus to risk assessment and negotiations. Timelines are tailored to the scope of review, document availability, and required regulatory approvals.

Questions and Answers

What is the difference between a share deal and an asset deal?

In a share deal, the buyer acquires shares or stock in the company. The target continues operating as the same legal entity – retaining its rights as well as its liabilities, which impacts the valuation and risk profile of the investment. Conversely, an asset deal involves purchasing the business itself, an organized part thereof, or selected assets. This requires separate verification of whether and on what terms contracts, permits, and liabilities transfer. Determining the optimal structure depends on the exact subject of the transaction, due diligence findings, and tax consequences.

How does MFW Fiałek protect the seller in a purchase agreement?

We negotiate the seller’s liability terms, including financial caps, claim thresholds, notification periods, and limitation periods. We also define which information disclosed to the buyer limits or excludes liability. While these terms are reflected in the agreement, certain mandatory legal provisions protecting a party cannot be excluded or modified by contract, even with mutual consent.

How does due diligence impact transaction terms?

Due diligence findings determine whether a transaction should proceed and under what conditions. Identified risks may result in purchase price adjustments, specific indemnities, or requirements for the seller to remediate issues prior to closing. We tailor the scope of legal due diligence to the specific parameters of each planned transaction.

How does legal advisory work when a family foundation is involved in a transaction?

We verify whether and on what conditions shares can be contributed to a family foundation, as well as the tax and legal implications of their subsequent sale. We prepare all necessary documentation – both for asset transfer into the foundation and for the transaction itself. We align this with the founder’s succession objectives, the foundation’s governance rules, and tax considerations.

Does the firm advise on cross-border transactions?

Yes. We handle transactions involving international entities and draft documentation in Polish or English. When foreign law expertise is required, we collaborate with leading foreign law firms and coordinate the overarching transaction process.

Completed projects

  • Seller in a transaction

    Advice on the acquisition of websites by an international media group.

  • International law firms

    Advice on conducting due diligence on Polish companies as part of the acquisition of international capital groups.

  • Capital group

    Advice on acquiring a capital group in the call centre industry.

  • Private equity fund

    Advising a management group in a multi-stage process aimed at establishing a private equity fund and investing in a healthcare entity.

  • Polish property developer operating nationwide

    Advice on the process of selling shares in a special purpose vehicle carrying out a property development project and approximately 5.5 ha of land intended for single-family housing, located on the outskirts of Poznań, to another property developer.

  • Company conducting a property development project

    Advice on the process of selling approximately 3 ha of formerly industrial land intended for office and residential development, located in the eastern part of Warsaw, to an investment fund and another developer.

  • Technology company

    Advising on the acquisition of 100% shares in a Polish special purpose vehicle.


Awards and rankings

The highest quality of services provided by the lawyers of the mergers and acquisitions team has been repeatedly appreciated by professional publications and rankings as well as industry organizations.

  • Chambers Global
  • Rzeczpospolita
  • The Lawyer European Awards
  • PSIK
  • Chambers Europe
  • IFLR1000
  • Mergermarket
  • Legal 500
  • CEE Mergers and Acquisitions

MFW Fiałek law firm has once again been recognised in the Chambers Global 2026 ranking in the Corporate & M&A: Mid Market (Poland) category, moving up from Band 3 to Band 2.

  • Mirosław Fiałek (Managing Partner) – Band 1
  • Rafał Siemieniec (Associate Partner) – Band 4
  • The Firm  – Band 2

 

“The MFW Fiałek team advises on a full range of corporate matters, including acquisitions, joint ventures and corporate structuring. The team has experience advising international investors, including private equity funds. Its clients include domestic conglomerates as well as international companies.”

Mirosław Fiałek, Managing Partner of the law firm, has once again been recognised in Band 1 in the Corporate & M&A: Mid Market category.

According to Chambers Global “Outstanding partner Mirosław Fiałek shows extensive activity and market recognition at the mid-market level. Fiałek is proficient at handling acquisitions, sales and restructuring procedures.”

Rafał Siemieniec, Associate Partner at MFW Fiałek, has been ranked at Band 4.

According to Chambers Global “Rafal Siemieniec is highly regarded in the market for his expert handling of domestic and cross-border mergers and acquisitions.”

 

In the Chambers Global 2025 ranking, MFW Fiałek law firm has been distinguished for the first time in the Corporate & M&A: Mid Market (Poland) category:

  • Mirosław Fiałek (Managing Partner) – Band 1
  • Rafał Siemieniec (Associate Partner) – Band 4
  • The Firm – Band 3

 

“MFW Fiałek has been recognized for its strong market presence and expertise. The team advises on a full range of corporate matters, including acquisitions, joint ventures, and corporate structuring. The team has experience advising international investors, including private equity funds. Its clients include domestic conglomerates as well as international companies.”

Mirosław Fiałek, our managing partner, has been ranked at Band 1 in the Corporate & M&A: Mid Market category.

According to Chambers Global “Outstanding partner Mirosław Fiałek showcases extensive activity and market recognition at the mid-market level. Fiałek is proficient at handling acquisitions and restructuring procedures.”

Rafał Siemieniec, Associate Partner at MFW Fiałek, has been ranked at Band 4.

According to Chambers Global “Rafal Siemieniec joins the rankings this year on the back of strong market recommendation for his expert handling of domestic and cross-border mergers and acquisitions.”

In the 24th edition of the Rzeczpospolita Ranking of Law Firms in 2026, we were ranked 2nd among law firms with up to 50 lawyers, receiving a total of eight distinctions: three firm distinctions, three individual recognitions, and two individual recommendations.

The firm was recognised as a leader in the areas of Corporate Law, Mergers & Acquisitions, Private Equity, and Real Estate, and received a recommendation in the newly introduced Private Clients category.

Among our lawyers, Mirosław Fiałek received an individual recognition in the areas of Corporate Law, Mergers & Acquisitions, and Private Equity. Rafał Siemieniec received an individual recognition in Real Estate and was also individually recommended in the Private Clients category.

In the Ranking of Law Firms of the daily newspaper Rzeczpospolita 2025, we were named as a leader in the categories (law firms with up to 50 lawyers): Commercial Law, Corporate Law, Mergers and Acquisitions; Private Equity and Real Estate.

Mirosław Fiałek was recognised as a leader in the categories Commercial Law, Corporate, M&A and Private Equity, and Rafał Siemieniec was recommended in the category: Real Estate.

 

In the Ranking of Law Firms of the daily newspaper Rzeczpospolita 2024, we were named as a leader in the categories (law firms with up to 50 lawyers): Commercial Law, Corporate Law, Mergers and Acquisitions; Private Equity and Real Estate.

Mirosław Fiałek was recognised as a leader in the categories Commercial Law, Corporate, M&A and Private Equity, and Rafał Siemieniec in the category: Real Estate.

MFW Fiałek also received a distinction (2nd place) in the category of Handling leading transactions on the Polish market in 2023.

In the Ranking of Law Firms of the daily newspaper Rzeczpospolita 2023, we were named as a leader in the categories (Division II – law firms with up to 50 lawyers): Commercial Law, Corporate Law, Mergers and Acquisitions; Private Equity and Real Estate.

Mirosław Fiałek was recognised as a leader in the categories Commercial Law, Corporate, M&A and Private Equity, and Rafał Siemieniec in the category: Real Estate.

MFW Fiałek has won the European Specialist Firm of the Year award at The Lawyer European Awards 2025 ceremony.

MFW Fiałek has been shortlisted for the third time as a finalist in the European Specialist Law Firm of the Year category at The Lawyer European Awards 2024.

MFW Fialek has been shortlisted as a finalist for The Lawyer European Awards 2023 in the European Specialist Law Firm of The Year category.

MFW Fialek has been shortlisted as a finalist for The Lawyer European Awards 2022 in the European Specialist Law Firm of The Year category.

The Private Equity practice, led by Partner Mirosław Fiałek, received the “Private Equity Legal Advisor of the Year” award at the 2026 PSIK Awards, organized by the Polish Private Equity and Venture Capital Association (PSIK).

The Private Equity practice, led by Partner Miroslaw Fiałek, is a finalist in the “legal advisor – venture capital” category of the PSIK Awards competition, organised by the Polish Private Equity and Venture Capital Association. The law firm is among the four law firms in Poland that were nominated.

The Private Equity practice, led by Partner Miroslaw Fiałek, was a finalist in the “legal advisor – private equity” category of the PSIK Awards competition, organised by the Polish Private Equity and Venture Capital Association. The law firm was among the five law firms in Poland that were nominated.

The Private Equity practice, led by Partner Miroslaw Fiałek, was a finalist in the “legal advisor – private equity” category of the PSIK Awards competition, organised by the Polish Private Equity and Venture Capital Association. The law firm was among the four law firms in Poland that were nominated.

In the Chambers Europe 2026 rankings, MFW Fiałek was recognised in the Corporate & M&A: Mid Market (Poland) category at Band 2 level (up from Band 3). Mirosław Fiałek retained his Band 1 position, whilst Rafał Siemieniec was once again ranked at Band 4 level.

In addition, the firm was also included for the first time in the Private Equity (Band 4) category. In the same category, Mirosław Fiałek (Band 4) was recognised for the second time.

In 2025 Chambers Europe ranked Mirosław Fiałek (Band 1), Rafał Siemieniec (Band 4) and M&A practice (Band 3) in Corporate/M&A: Mid-Market category.

Mirosław Fiałek has been recommended for the first time by Chambers Europe in the Private Equity category (Band 4).

According to Chambers Europe “MFW Fiałek has a keen focus on delivery successful transactions. The lawyers have solid market knowledge and experience of international and private equity work.”

“Outstanding partner Mirosław Fiałek showcases extensive activity and market recognition at the mid-market level. Fiałek is proficient at handling acquisitions and restructuring procedures.”

“Rafal Siemieniec joins the rankings this year on the back of strong market recommendation for his expert handling of domestic and cross-border mergers and acquisitions.”

In the Chambers Europe 2024 ranking, MFW Fiałek law firm has been distinguished in the Corporate & M&A: Mid Market category, advancing to Band 3 this year compared to our previous position:

“MFW Fiałek climbs the rankings as a result of strong market support. The team advises on a full range of corporate matters, including acquisitions, joint ventures and corporate structuring. The team has experience advising international investors, including private equity funds. Its clients include domestic conglomerates as well as international companies.”

Mirosław Fiałek, our managing partner, has once again been recognised as a recommended lawyer in the Corporate & M&A: Mid Market category. Mirosław Fiałek maintained his position in the ranking and was indicated at Band 2.

According to Chambers Europe “Mirosław Fiałek showcases extensive activity and market recognition at the mid-market level. Fiałek is proficient at handling acquisitions and restructuring procedures.”

In the Chambers Europe 2023 ranking, MFW Fiałek law firm has been distinguished in the Corporate & M&A: Mid Market category:

MFW Fiałek enters the rankings as a result of strong market support. The team advises on a full range of corporate matters, including acquisitions, joint ventures and corporate structuring. The team has experience advising international investors, including private equity funds. Its clients include domestic conglomerates as well as international companies.

Mirosław Fiałek, our managing partner, has once again been recognised as a recommended lawyer in the Corporate & M&A: Mid Market category. His position in this ranking has strengthened and this year he has been designated as Band 2.

According to Chambers Europe Mirosław Fiałek showcases extensive activity and market recognition at the mid-market level. Mirosław Fiałek is proficient at handling acquisitions and restructuring procedures.

In the Chambers Europe 2022 ranking, Partner Mirosław Fiałek was awarded in the Corporate/M&A: Mid-Market category in Band 3.

Mirosław Fiałek has joined the ranking ‘after showcasing extensive activity and market recognition at the mid-market level’. In addition, he has been recognized as an expert in handling acquisitions and restructuring.

In the Chambers Europe 2012 ranking, Partner Mirosław Fiałek was distinguished as “Up and Coming” in the area of Private Equity practice and was identified as “a lawyer valued both for his particular attention to detail and the ability to see the full picture of the situation” and as “one of the most promising lawyers in the field of private equity in Poland.”

In the IFLR1000 2024 ranking, MFW Fiałek were  awarded in the field of M&A practice and in the Capital markets: Debt and Capital markets: Equity.

In the IFLR1000 2024 ranking, MFW Fiałek were awarded in the field of M&A practice, obtaining a high position in Tier 4.

Partner Mirosław Fiałek was distinguished as “Highly Regarded” in the field of M&A and Private Equity.

In the IFLR1000 2023 ranking, MFW Fiałek were  awarded in the field of M&A practice and in the Capital markets: Debt and Capital markets: Equity.

In the IFLR1000 2023 ranking, MFW Fiałek were awarded in the field of M&A practice, obtaining a high position in Tier 4.

Partner Mirosław Fiałek was distinguished as “Highly Regarded” in the field of M&A.

In the IFLR1000 2022 ranking, MFW Fiałek were  awarded in the field of M&A practice and in the Capital markets: Debt and Capital markets: Equity.

In the IFLR1000 2022 ranking, MFW Fiałek were awarded in the field of M&A practice, obtaining a high position in Tier 4.

Partner Mirosław Fiałek was distinguished as “Highly Regarded” in the field of M&A.

In the IFLR1000 2021 ranking, MFW Fiałek were awarded in the field of M&A practice.

In the IFLR1000 2021-22 ranking, MFW Fiałek were awarded in the field of M&A practice, obtaining a high position in Tier 4.

Partner Mirosław Fiałek was distinguished as “Highly Regarded” in the field of M&A.

In the IFLR1000 2019 ranking, MFW Fiałek were awarded in the field of M&A practice.

Partner Mirosław Fiałek was distinguished as “Highly Regarded” in the field of M&A.

In the IFLR1000 2019 ranking, MFW Fiałek were awarded in the field of M&A practice.

Partner Mirosław Fiałek was distinguished as “Highly Regarded” in the field of M&A.

In the IFLR1000 2018 ranking, MFW Fiałek were awarded in the field of M&A practice.

Partner Mirosław Fiałek was distinguished as “Highly Regarded” in the field of M&A.

Mergermarket Ranking for Q1 2025

In the Mergermarket ranking – Global and Regional M&A Rankings – published in April 2025 and covering transactions completed in 1Q 2025, the MFW Fiałek law firm was ranked:

  • 1th in the “Poland rankings by deal count”
  • 8th in the “CEE ranking by deal count”

The ranking includes 6 transactions completed in 1Q 2025 involving MFW Fiałek.

Mergermarket Ranking for H1 2025

In the Mergermarket ranking published for the first half of 2025, the firm was recognized in the following key categories:

  • 2nd in the “Poland ranking by deal count”
  • 13th in the “CEE ranking by deal count”

 

Mergermarket Ranking for 9M 2025

In the Mergermarket ranking published for the first nine months of 2025, the firm was recognized in the following areas:

  • 4th place in the “Poland ranking by deal count”
  • 13th place in the “CEE ranking by deal count”

In the Mergermarket ranking – Global and Regional M&A Rankings – published in January 2025 and covering transactions completed in 2024, the MFW Fiałek law firm was ranked:

  • 6th in the “Poland rankings by deal count”
  • 19th in the “CEE ranking by deal count”

The ranking includes 16 transactions completed in 2024 involving MFW Fiałek.

In 2019, the Partner Mirosław Fiałek was classified as one of the most active lawyers in the field of M&A practice in the entire CEE region.

In The Legal 500 2026 rankings, MFW Fiałek has once again been recognised in the Private Equity (Poland) category, retaining its Tier 3 position.

In the Legal 500 2025 ranking, MFW Fiałek was awarded in the field of Private Equity practice (Tier 3).

In the Legal 500 2024 ranking, MFW Fiałek was awarded in the field of Capital Markets practice.

In the Legal 500 2023 ranking, MFW Fiałek was awarded in the field of Capital Markets practice.

In the Legal 500 2019 ranking, MFW Fiałek was awarded in the field of Commercial, Corporate and M&A practice.

In the Legal 500 2018 ranking, MFW Fiałek was awarded in the field of Commercial, Corporate and M&A practice.

In the Legal 500 2017 ranking, MFW Fiałek was awarded in the field of Commercial, Corporate and M&A practice.

In the Legal 500 2016 ranking, MFW Fiałek was awarded in the field of Commercial, Corporate and M&A practice.

In 2018, MFW Fiałek were recognised as the best boutique law firm of the year, receiving an award at the CEE Mergers and Acquisitions Awards 2018.

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01/09

Alvo sp. z o.o. sp.k.

MFW Fiałek provides services at a level comparable to that of the largest network law firms. The boutique character and narrow specialisation of the law firm are undoubtedly their great advantage. Our transaction was very complex, and the attorneys at MFW Fiałek were of invaluable support for us.

Agata Olszewska Proxy, Alvo sp. z oo sp.k.

Tempo Finanse sp z o.o.

While working together, the team led by Mirosław Fiałek was distinguished by their business approach to the transaction, thorough understanding of the issues, and both highly substantive and effective argumentation during negotiations.

Jarosław Wyrzykowski President of Tempo Finanse sp. z o.o.

ESO Capital

With full conviction, I can recommend the firm as a competent legal advisor in M&A and PE transactions, distinguished by their business approach to the transaction and their incredible commitment. In my opinion, working with the firm had a significant impact on the success of the transaction.

Richard Butler Founding Partner, Chief Operating Office rat ESO Capital

Value4Capital

MFW Fiałek advised us on the sale of the business operations of a private security group to a company based in Shanghai, China. With full conviction, I can recommend the firm as a competent, reliable, and comprehensive legal advisor in M&A and Private Equity transactions, as well as for transaction services.

Jacek Pogonowski Partner, Value4Capital

Clovin S.A.

During the transaction, the team at the firm had to face challenges arising from a complicated investment process, as part of which an international private equity fund invested in a family company. The transaction documentation prepared by the firm not only comprehensively secured each of the company’s shareholders individually, but also accounted for the specific nature of the company’s operations, based on close cooperation among the existing shareholders.

Arkadiusz Żanowski President of the Management Board, Clovin S.A.

Centrum Rozliczeń Elektronicznych Polskie ePłatności S.A.

The firm was responsible for structuring the transaction our company conducted, as well as for preparing, negotiating, and signing the transaction documents and closing of the transaction. I can definitely recommend MFW Fiałek.

Marcin Drozdowski Vice President of the Management Board of Polish ePayments (Centrum Rozliczeń Elektronicznych Polskie ePłatności S.A)

OCRK Polska sp. z o.o.

The law firm provided comprehensive and efficient legal advice on the transaction our company conducted. The whole thing went very smoothly and professionally. I definitely recommend MFW Fiałek.

Marcin Stencel Member of the Management Board of OCRK Polska sp. z o.o.

CIC sp. z o.o.

We worked with MFW Fiałek on two company sale transactions. During this process, the firm proved to be a professional and committed partner, providing comprehensive legal support at every step of the way.

Rafał Błędowski Partner, CIC sp. z o.o.

Yuniversal Development sp. z o.o.

During our cooperation, the team at the firm demonstrated professionalism, experience, and an excellent understanding of both the legal issues and the business environment of the transaction. In our opinion, working with the firm had a significant impact on the success of the transaction.

Wojciech Czyżewski Proxy, Yuniversal Development sp. z o.o.
Practices
  1. 01. Mergers and acquisitions
  2. 02. Private equity, venture capital
  3. 03. Acquiring an investor
  4. 04. Family Foundation
  5. 05. Bonds issues
  6. 06. Due diligence
  7. 07. Real estate and investment process
  8. 08. Capital market transactions, share offers
  9. 09. Collateral administration
  10. 10. Investment funds
  11. 11. Regulatory advice
  12. 12. Corporate law
  13. 13. Restructuring
  14. 14. Obtaining finance
  15. 15. Dispute resolution
  16. 16. Competition law
  17. 17. Manager option programs
  18. 18. Labour law
  19. 19. Intellectual property
  20. 20. Personal data protection