People

Lucrezia Marchionni Associate

Milan

Lucrezia has experience in a broad range of corporate law matters, including mergers and acquisitions and corporate governance.

Cécile Mariotti Partner

Paris

She has significant experience in both French and international tax matters and regularly advises on complex mergers and acquisitions, reorganizations, capital markets, and financing transactions.

Cécile works with French and international corporate groups across various sectors, both public and private, as well as financial institutions and investment funds. She also represents clients in their dealings with tax authorities, including ruling requests and tax litigation. Additionally, she assists in the structuring and implementation of employee stock offerings and management packages.

Cécile teaches a seminar on the tax aspects of LBOs as part of the Master in International Taxation program jointly offered by Paris II Panthéon-Assas University and HEC. She is a member of the International Fiscal Association (IFA) and the Institut des Avocats Conseils Fiscaux (IACF), where she served on the Corporate Tax Committee until October 2020. She is also a member of the Tax Committee of France Invest and has been appointed as a rapporteur for France at the IFA Congress in Lisbon in 2025.

In addition, Cécile serves on the board of the Alliance for the Financing of Femtech in France. She maintains an active pro bono practice in the tech sector and is strongly committed to initiatives and networks that support the long-term success of women leaders in business. Notably, she served as co-leader of the Women Enriching Business Committee in Paris at Latham & Watkins.

Before joining Orrick, Cécile spent four years in the tax team at Latham & Watkins, following seven years in the tax team at Cleary Gottlieb, working in both the Paris and New York offices.

Alexis Marraud des Grottes Partner

Paris

Recommended by Chambers and Legal 500 EMEA in Mergers & Acquisitions, Alexis is key counsel to French and international listed and non-listed companies, private equity and hedge funds, managers, boards and families.

He advises on investments and divestments, securities issues, cross-border and complex transactions, strategic negotiations and sensitive litigation. He is "one of the best players in the market" (Legal 500) and is an authority on issues related to governance, restructuring, as well as on shareholder activism.

Alexis has advised many world leading companies, including: SFL management and SFL in its cross border merger with Colonial, Herige in the sale of its trading branch (materials, public works and natural stones) to Samse, BAE Systems in the acquisition of Eurostep, Alcentra and Fidera in their investment in Pierre & Vacances, Air France-KLM in its relations with KLM and the Dutch State, Veolia on the acquisition of Suez, LVMH in the acquisition of Tiffany, Euro Disney regarding the tender offer of The Walt Disney Company, L’Oréal on a share buyback from Swiss-based Nestlé and a sale to Nestlé of its stake in Galderma, and Club Med on the tender offer by Chinese conglomerate Fosun. He has also advised Oeneo in connection with the tender offer of its controlling shareholder, Naturex in connection with a takeover bid by Givaudan, the board of directors of Zodiac in relation to its merger with Safran, and Metrovacesa sale of its stake in Gecina. He additionally deals with issues related to token and crypto-currency and crypto-assets issues, including structuring and setting up issuing entities and related services.

Alexis regularly publishes and intervenes in conferences and provides training on capital market, governance and M&A and he regularly lectures at the business school EM Lyon and Paris Dauphine University. He has been a member of several working groups, including the working group on public offers of the Legal High Committee for Financial Markets of Paris. The French Financial Market Authority (Autorité des marches financiers - AMF) has invited Alexis to join its consultative Commission on Disclosures and Corporate Finance as a capital markets law specialist.

Daniel Mathews Partner

New York

Dan advises on projects spanning the energy and infrastructure sector, including toll roads, rail, airports, ports, thermal and renewable energy generation, transmission infrastructure, telecommunications infrastructure, and water and waste facilities.

His key clients include major strategic and financial sponsors who have been involved in many of the largest and highest profile PPP and project development transactions over the past 30 years. Dan advises clients on Public-Private Partnerships, large-scale, complex project financings, and acquisitions and divestitures of projects and project portfolios, leading teams that have the depth and breadth to deliver excellence in every phase of a project, including development, construction, financing and operations, as well as providing leading M&A, restructuring and tax advice.

Dan has long been recognized as a leading practitioner in publications such as Chambers (every year since 2005), The Legal 500 and others. Clients describe him in Chambers as a “dean in the PPP space,” the “best in the business” and one client added that “he has an encyclopedic memory about all the deals in the market and a negotiating style that solves problems rather than creating them.”

Attilio Mazzilli Partner

Milan

Attilio brings to the table a wealth of knowledge and a deep understanding of the technology sector, which is critical in today's rapidly evolving business landscape. His practice is primarily focuses on providing expert legal advice on cross-border and domestic mergers and acquisitions (M&A), private equity, and venture capital transactions. 

Attilio has a rich history of advising both domestic and multinational companies as well as private equity funds through their most critical and complex M&A and investments transactions. His focus within the dynamic realms of technology industry has positioned him as a go-to legal strategist for companies seeking to navigate the intricate and often disruptive characteristic market shifts of these sectors. His tailored approach ensures that the companies he advises are well-positioned to capitalize on the opportunities presented by their investments and M&A activities, fostering growth, innovation, and competitive advantage in a rapidly evolving business landscape.

In the context of innovation, Attilio’s role as an advisor to VC firms and high-growth technology companies places him at the forefront of investments in the tech industry.

His experience covers a broad spectrum of legal disciplines and is critical in identifying and evaluating potential investment opportunities within the sector, particularly in areas prone to rapid growth and innovation. With a seasoned understanding of market trends and the intricacies of startup development, Attilio advises investors on how to allocate their capital effectively, maximizing potential returns.

He is also extensively experienced at guiding technology companies at all stages of their life cycle and his contributions is invaluable for companies transitioning from seed stage through Series A and B funding rounds and eventually to exit strategies. His guidance encompasses strategic planning, corporate governance, and the navigation of regulatory environments. Startups, with their inherent risks and potential for exponential growth, require nuanced advice to thrive, and Attilio offers tailored counsel to help these companies scale their operations, refine their business models, and attract further investment. His experience is also instrumental in preparing these companies for various exit scenarios, whether through acquisitions, mergers, or initial public offerings (IPOs), ensuring that founders and investors alike realize their ventures' full value.

King Milling Partner

New York

King is a partner in the New York office and a member of the Global Mergers & Acquisitions and Private Equity Group. His practice focuses on domestic and cross-border M&A, joint venture, private equity and venture capital transactions, including negotiated mergers, auction bid processes, distressed asset sales, leveraged buyouts and the acquisition and divestiture of divisions and subsidiaries.

King is experienced in all aspects of Delaware and New York corporate, partnership and limited liability company law. He regularly counsels boards of directors on corporate governance, compliance, fiduciary duty and executive compensation matters.

King represents U.S. and non-U.S. clients in a wide range of industries, including life sciences, technology, energy, consumer products, industrials and manufacturing and financial services.

Susana Min Associate

Santa Monica

Justin Montis Senior Associate

Santa Monica

Justin advises public and private companies and private equity funds and their portfolio companies on various strategic transactions, including leveraged buyouts, dispositions, carveouts, growth equity investments and secondary transactions, and other general corporate matters.

Amanda Morales Associate

Santa Monica

Joanna Pak Senior Associate

New York

Joanna advises public and private companies in domestic and cross-border mergers and acquisitions.

Prior to joining Orrick, Joanna was a corporate associate in the New York office of Cravath, Swaine & Moore LLP.

Martina Pfaffinger Senior Associate

Munich

She has particular experience in representing Asian clients from the automotive sector in DIS arbitration proceedings. Clients benefit from her background as corporate / M&A lawyer and her experience with shareholder disputes, management liability cases, post-M&A disputes and other contentious commercial matters. As a trained business mediator, Martina also advises clients on the extrajudicial settlement of conflicts and the avoidance of disputes at an early stage when negotiating and drafting contracts.

Prior to joining Orrick, Martina worked at the Munich office of a leading U.S. law firm and the Munich / New York City offices of a renowned German law firm.

Martina currently writes her doctoral thesis on a subject relating to management liability.

Diletta Pietrosemoli Associate

Milan

Diletta provides advice and assistance to Italian and international clients in relation to real estate transactions. She primarily deals with acquisitions and disposals of single assets and real estate portfolios for commercial, hotel and residential use.

Diletta graduated with honors (110/110 cum laude) from Bocconi University in Milan, after studying for a semester at ESADE University in Barcelona.

She was admitted to the bar in Milan with honors in 2024.