Anne Murray is an experienced white-collar defense, corporate investigations and compliance lawyer who helps clients navigate the most sophisticated ethics, fraud and corruption issues. She defends companies and individuals in investigations by the US Department of Justice (DOJ), the US Securities and Exchange Commission (SEC) and other government agencies. Anne also conducts internal investigations on behalf of companies or their boards into allegations related to bribery, corruption, accounting fraud, earnings management, improper revenue recognition, embezzlement and other misconduct.
Investigations
- Represented a special committee of the board in an investigation into embezzlement by a company’s senior executives*
- Conducted an internal investigation into allegations of earnings management by senior leaders of a publicly traded company*
- Defended a multinational corporation in a five-year corruption and bribery investigation by the DOJ and SEC that spanned South America, Europe, Asia and Australia, and obtained government declination letters*
- Chambers Global, FCPA: USA, 2022-2025
- Chambers USA, FCPA, 2022-2025
- Global Investigations Review, Women in Investigations, 2025
- Global Investigations Review’s GIR 100, Recommended, 2024
- Super Lawyers, Washington, DC, Rising Star, 2014-2019
- GIR Just Anti-Corruption, Washington DC’s FCPA Bar, highly recommended
- American University Washington College of Law, JD, cum laude
- Middlebury College, BA
- District of Columbia
- Massachusetts
- US District Court for the District of Massachusetts

Guy Singer
A former federal prosecutor and seasoned trial lawyer, Guy Singer focuses his practice on complex white-collar criminal defense, regulatory enforcement and compliance matters, and internal investigations. He counsels clients across a broad range of industries, including healthcare, life sciences, oil and gas, technology and maritime.
- Represented a large multinational company in the healthcare industry before the DOJ and SEC in a multi-year FCPA investigation that spanned five continents*
- Represented an oil and gas company in connection with internal and DOJ anticorruption investigations, third-party due diligence and a variety of compliance matters, including drafting anticorruption policies and procedures*
- Conducted large internal investigations into allegations of FCPA and other criminal violations in multiple countries for several large multinational companies in the shipping, oil and gas, engineering and commodities industries*
- Global Investigations Review’s GIR 100, Recommended, 2024
- Chambers USA, FCPA: Nationwide, 2017-2022 and 2025; Litigation: White-Collar Crime & Government Investigations: District of Columbia, 2018-2019 and 2025
- Chambers USA, FCPA: Global, 2019-2020
- New England Law Boston, JD
- University of Hartford, BA
- District of Columbia
- New York

Michal Berkner
Michal Berkner is a partner in the London transactions practice and is one of Europe’s preeminent M&A practitioners within the life sciences, healthcare and technology sectors. She advises major strategic buyers and sellers in game-changing public and private transactions, including cross-border deals, negotiated and unsolicited transactions, takeover defenses, corporate governance, and joint ventures.
Michal who is dual qualified (New York and England and Wales) is ranked as a leading individual in Chambers Global and Chambers UK. She also received a highly commended distinction in the Women in Law category at The British Legal Awards 2019. In 2017, Michal was included in the Financial Times HERoes list, which recognizes the top 50 female champions of women in business in the UK and Ireland. Over her 27 year legal career based in New York and London she has advised on some of the largest and most complex global M&A transactions.
- Advised a clinical-stage biotech company focused on the discovery and development of treatments for severe, rare gastrointestinal (GI) conditions, on its acquisition by a leading gastrointestinal (GI) healthcare company, with an estimated aggregate consideration of approximately $1 billion*
- Advised a global biopharmaceutical company on its agreement to combine with One of Europe’s leading and life sciences investment firms (a SPAC) for $248 million*
- Advised a public biopharmaceutical company on its agreement to buy the US rights for FYCOMPA (perampanel) CIII.FY from a leading research-based pharmaceutical company*
- Legal 500 UK, Recommended, 2024-2025
- Chambers UK, Corporate/M&A: £100-800 Million, 2023-2025
- Chambers Europe, Corporate/M&A: Mid-Market, 2023-2024
- University of Pennsylvania Law School, JD
- Johns Hopkins University, BA
- England and Wales
- New York

Julia M. Boyd
Julia M. Boyd focuses her practice on complex corporate transactions. Drawing on almost two decades of experience, Julia offers a wide range of legal advice that includes domestic and international mergers, asset and stock acquisitions, leveraged buyouts, bolt-ons, private equity and venture capital investments, growth equity financings, special situations, recapitalizations, corporate restructurings and dispositions. She represents private equity funds, credit funds, venture capital funds and portfolio companies and other corporates.
- Represented DW Healthcare Partners in connection with acquisition of Med Learning Group, a full service medical education company*
- Represented Frazier Healthcare Partners in connection with: (i) the sale of its portfolio company, Laboratory Supply Company to McKesson Corporation, (ii) the acquisition of Southside Pharmacy Group, an independent specialty pharmacy group and (iii) its investment in Solis Mammography with the Audax Group*
- Represented Leeds Equity Partners: in connection with: (i) its acquisition of Endeavor Schools, LLC, a private school group and (ii) the sale of its portfolio company, Nobel Learning Communities, to Investcorp*
- American Bar Association
- New York State Bar Association
- Hellenic Lawyers Association
- Canadian Association of NY
- North American Foundation for the University of Durham
- Royal Canadian Yacht Club
- Durham University, LLB, with honors
- University of Toronto, BA
- New York
- Englisch
- Französisch

Jeeseon Ahn
Jeeseon Ahn represents financial institutions and sponsors on domestic and international project financings, other structured financings, investments and other transactions in the energy and infrastructure sectors, including renewable and conventional power, oil and gas, mining and digital infrastructure. Jeeseon also has significant experience representing export credit agencies and multilateral development banks on cross-border infrastructure projects in Latin America and Asia.
- Northwestern Pritzker School of Law, JD
- Yale University, BA
- New York
- Englisch
- Korean
Audrey Pumariega
Audrey Pumariega represents clients in high-stakes commercial, healthcare, and employment litigation.
Her clients include financial institutions, technology and telecommunications companies, accounting firms, hospitals, physician groups, health insurers, and managed services organizations. She regularly appears in federal and state courts, arbitration tribunals, and administrative proceedings, including before the Florida Agency for Health Care Administration and the Florida Board of Medicine.
- Defended a major financial institution in high-stakes civil actions relating to one of the largest Ponzi schemes in the United States
- Defended a putative class action seeking to block a large health insurer’s reorganization and force a multibillion-dollar transfer to policyholders
- Obtained dismissal and prevailed on appeal for an international accounting firm in a lawsuit brought by the firm’s former CEO seeking attorneys‘ fees following a criminal acquittal
- Super Lawyers, Rising Star in business litigation and health care litigation, 2013 – 2022
- Lawyers for Children America, John Edward Smith Child Advocacy Award
- University of Miami School of Law, JD, magna cum laude, Order of the Coif
- University of Southern California
- Florida
- US Court of Appeals for the Eleventh Circuit
- US District Court for the Southern District of Florida
- US District Court for the Middle District of Florida
- Englisch
- Spanish

Axel Schulz
Axel Schulz focuses his practice on European competition law and has a wealth of experience in merger control, global cartel defence and general antitrust advice in sectors including energy, chemicals, agri-commodities, container shipping, ports, pigments, medical devices and pharmaceuticals.
Within the pharmaceutical sector, Axel demonstrates exceptional proficiency and industry insight. He has built a solid reputation assisting clients with competition law matters arising around loss of exclusivity; in addition, Axel has advised on distribution, co-marketing, licensing and various forms of vertical and horizontal cooperation agreements.
Axel is adept in orchestrating advice across numerous jurisdictions, providing clients with clear and comprehensive solutions. This global aspect of his practice equips him to guide both national and multinational companies through the most intricate challenges.
- Advised a leading energy company in the acquisition of a renewable energy company with a dozen merger control notifications worldwide*
- Advised a sovereign wealth fund on the acquisition of a global agri-commodity business with a dozen merger control notifications worldwide*
- Advised a leading container shipping company on the acquisition of a leading niche player, resulting in several global merger control notifications*
- Advised a global specialty chemical company on the acquisition of a competing business with merger control filings in 11 jurisdictions, including the EC and the FTC*
- Provided a leading global pharmaceutical company with antitrust advice in relation to its blockbuster product*
- Winning Author, Concurrences, Antitrust Writing Awards – Readers’ Choice, 2026 – “Cooperate, protect, and challenge: Responding to dawn raids conducted by EU competition authorities„
- Shortlisted Author, Concurrences, Antitrust Writing Awards – Readers’ Choice, 2026 – “European Commission Fines Teva €462.6 Million for Misusing Divisional patents and Disparaging Generic Competitors in the Copaxone Market”
- JUVE Handbook of Commercial Law Firms, Recommended, Antitrust Law, 2016-2026
- Global Competition Review, GCR 100, 2025
- Lexology, Client Choice Award, Competition in Belgium, 2024
- Legal 500 EMEA, Recommended, 2016-2026
- Handelsblatt Best Lawyers in Germany, Antitrust/Competition Law, 2021-2023
- Winning Author, Concurrences, Antitrust Writing Awards – Readers’ Choice, 2026 – “Legal professional privilege in EU competition law: A broader horizon„
- Shortlisted Author, Concurrences, Antitrust Writing Awards – Readers’ Choice, 2026 – “European Commission Fines Teva €462.6 Million for Misusing Divisional patents and Disparaging Generic Competitors in the Copaxone Market”
- College of Europe, Bruges, LL.M, European Law
- University of Konstanz, Law Degree, Diploma in French Law
- University of Lyon
- Brussels
- Munich
- Englisch
- Französisch
- Deutsch
- Italienisch

Dr. Thomas Diekmann
Dr. Thomas Diekmann berät Private Equity Sponsoren bei nationalen und grenzüberschreitenden M&A-Transaktionen. Seine Expertise umfasst ein breites Spektrum an Private Equity Transaktionen, einschließlich Leveraged Buyouts, Carve-Outs, Joint Ventures, Konsortialvereinbarungen, Minderheitsbeteiligungen und Verkaufsprozesse.
Vor seinem Eintritt bei McDermott war Thomas Diekmann in den Praxisgruppen für Private Equity anderer internationaler Sozietäten tätig.
Dr. Thomas Diekmann beriet:
- Main Capital beim Erwerb einer Mehrheitsbeteiligung an Raynet
- LLCP Portfoliogesellschaft cleversoft bei Übernahme der FS Assist
- Ardian beim Erwerb einer Mehrheitsbeteiligung an centrotherm international AG
- Handelsblatt/Best Lawyers™, “Ones to Watch” in Deutschland: Private Equity, 2023-2027
- Ludwig-Maximilians-Universität München, Dr. jur.
- Oberlandesgericht Bochum, Zweites Staatsexamen
- Westfälische Wilhelms-Universität-Münster, Erstes Staatsexamen
- Deutschland
- Deutsch
- Englisch

Dr. Matthias Weissinger
Matthias Weissinger berät bei nationalen und grenzüberschreitenden Finanzierungen sowie Restrukturierungen. Er verfügt über umfangreiche Erfahrung in der Beratung von nationalen und internationalen Finanzinstituten, Debt Funds, Private Equity Häuser und Unternehmen. Seine Expertise umfasst ein weitreichendes Spektrum von Leveraged Buyouts, Unitranche-Finanzierungen, Buy-outs, Unitranche Finanzierungen, sowie Kredite für große und mittelständische Unternehmen.
Neben seiner Expertise im Finanzierungsbereich verfügt er über umfangreiche Kenntnisse in komplexen Restrukturierungen, außergerichtlichen Sanierung, Insolvenzverfahren und Distressed M&A Transaktionen.
Er publiziert regelmäßig und hält Vorträge zu den Themen Insolvenz, Restrukturierung und Akquisitionsfinanzierung.
Vor seinem Eintritt bei McDermott war er Partner bei verschiedenen führenden internationalen Anwaltskanzleien.
Matthias Weissinger beriet:
- Main Capital Partners beim Erwerb einer Mehrheitsbeteiligung an Raynet
- InfraVia Capital Partners bei der Finanzierung des Erwerbs einer Mehrheitsbeteiligung an der Nexis Group GmbH
- Ardian beim Erwerb einer Mehrheitsbeteiligung an Pflegia
- JUVE Handbuch Wirtschaftskanzleien, „Aufsteiger“: Kredite und Akquisitionsfinanzierung, 2025-2026
- Handelsblatt/Best Lawyers™, „Einer der führenden Anwälte“ in Deutschland: Bank- und Finanzrecht, 2024-2027
- Chambers Europe, Band 4 in Deutschland: Banking & Finance, 2026
- Universität Bayreuth, Dr. Jur.
- University of Pennsylvania, LLM.
- Ludwig-Maximilians-Universität München, Erstes Staatsexamen
- Deutschland
- Deutsch
- Englisch

Kasim Reed
Kasim Reed is a seasoned litigator, business advisor and public servant who served two terms as the 59th mayor of the city of Atlanta. His practice focuses on complex commercial litigation, and he leverages his public policy experience for the strategic benefit of major corporations across a variety of industries.
- The Root, Top 10 Most Influential African Americans
- National Forum for Black Public Administrators, Distinguished Leadership Award
- Joint Center for Political and Economic Studies, Louis E. Martin Great American Award
- Howard University, trustee emeriti
- US Conference of Mayors, Transportation and Communications Committee, former chairman
- Atlanta Regional Commission, Regional Transit Committee, former chairman
- Howard University School of Law, JD
- Howard University, BA
- Georgia
