Austin
Jay Greathouse represents for-profit and non-profit healthcare organizations, as well as healthcare industry investors, in their most significant transactions. He works with hospitals, physician groups, ambulatory surgery centers, portfolio companies and private equity firms to execute complex joint ventures, cross-border collaborations and transactions, acquisitions and divestitures. Jay’s experience on both sides of the table enables him to maximize outcomes for his clients and facilitate an efficient dealmaking process for all parties.
- Represented Erlanger Health System in its evaluation of future options and the passage of a new state law authorizing the hospital to change from a governmental entity to a private, not-for-profit hospital system for financial and operational success*
*Matter handled prior to joining the firm.
- Chambers USA, Healthcare, 2024-2026
- Best Lawyers: Ones to Watch in America, Healthcare Law and Mergers and Acquisitions Law, 2021-2025
- Super Lawyers, Texas Rising Star, Healthcare, 2020-2022
- American Health Law Association, member
- Leadership San Antonio, Class 41
- Laurel Heights Weekday School – Board Member, 2015–2018; Chairman of School Board, 2015–2017
- Washington University School of Law, JD, cum laude
- Washington University in St. Louis, BS
- Texas A&M University
- Texas
Matthew R. King
Los Angeles
Matthew King’s practice spans a wide array of global and domestic technology and outsourcing transactions. This includes information technology and business process outsourcing, software development and maintenance, software licensing, blockchain and cryptocurrency, and other emerging technologies.
Matthew has deep experience in negotiating complex commercial transactions, intellectual property and information technology services agreements, technology-related joint ventures, and strategic alliances. He also handles various transactional agreements that govern the offering, use, and expansion of emerging technologies, particularly in the realms of blockchain and cryptocurrency. As a recognized legal and business thought leader, Matthew represents clients on issues related to complex international outsourcing transactions. This includes the outsourcing of numerous IT functions such as infrastructure, applications development and maintenance, end-user computing, help desk, and network operations. His expertise in business process outsourcing encompasses middle and back office financial services processes, facility management functions, claims processing, human resources, payroll processing, finance and accounting functions, and procurement.
Before earning his law degree, Matthew served six years as a naval officer, completing deployments in support of Operation Enduring Freedom and Iraqi Freedom.
- Represented Marriott in a variety of ITO transactions, including Marriott’s procurement of infrastructure and ADM support from six major service providers and agreements that will govern the replacement of their internal reservations and property management systems with SaaS products, with deal values surpassing $1.5 billion.
- Represented Hertz in a variety of SaaS transactions, including payment processing, and managed security and professional services opposite four vendors, as well as an IT transformation initiative.
- Represented various investment fund companies in their procurement of a variety of middle office and back-office services from leading fund administration services providers, including Bank of New York Mellon.
- Legal 500 US, Recommended, 2024-2025
- Georgetown University Law Center, JD, cum laude
- US Naval Academy, BS
- California
- US District Court for the Central District of California
- English
Sumaya M. Noush
Chicago
Sumaya M. Noush maintains a corporate, transactional, and regulatory practice focused on the representation of hospitals and health systems. She has significant experience with innovative and high-stakes strategic corporate transactions that require skilled navigation of complex regulatory, financial, and operational challenges, including negotiations with federal and state regulators.
- Advises on healthcare transaction review law requirements and attorney general transaction review requirements in multiple jurisdictions
- Served as second chair transactional counsel to a Pennsylvania, nonprofit health system in its transformative affiliation with a leading regional healthcare organization, involving $285 million in long-term capital commitments to enhance healthcare services and infrastructure.
- Served as lead transactional counsel in the termination of a US Department of Justice-brokered collaboration between two competing regional health systems, negotiated more than three times the value of the initial termination offer, and negotiated a complex transition services agreement
- Served as second chair transactional counsel to a $10 billion integrated healthcare organization in its membership substitution with a newly formed nonprofit organization that was established to create a historic shift in value-based care delivery
- Best Lawyers: Ones to Watch in America, Healthcare Law, 2022-2027
- Super Lawyers Rising Stars, Illinois, 2023-2027
- Person of the Year Award (Group Award), Chicago Lawyer Magazine, 2025
- American Health Lawyers Association, member and author, 2016 to present
- Chicago Committee on Minorities in Large Law Firms, Associate Board, 2023 to 2025
- Illinois Association of Healthcare Attorneys, Board of Directors, 2020 to 2024
- Loyola University Chicago School of Law, JD, BS
- Loyola University Chicago Neiswanger Institute for Bioethics and Healthcare Leadership – Stritch School of Medicine, MA
- Loyola University Chicago, BA, BS
- Illinois
- Arabic
- English
Kevin J. Sullivan
Boston
Kevin J. Sullivan focuses his practice on representing private equity sponsors and other investment funds, private and public companies, and family offices in a wide variety of transactional matters. He has a broad range of experience negotiating and closing leveraged buyouts, mergers and acquisitions, joint ventures, carve-outs and growth equity investments in the United States and abroad.
Kevin represents private equity investors and their portfolio companies on key transactions across a variety of industries, including media, software/technology, sports and entertainment, professional services, and consumer goods and retail. He also has significant experience counseling founder-owned companies on general corporate matters and liquidity transactions.
- Chambers USA, Private Equity: Buyouts (Band 1), Corporate/M&A, 2007-2024
- Legal 500 US, Recommended, 2023-2024
- IFLR1000, Private Equity, M&A, 2023
- The Best Lawyers in America, Leveraged Buyouts and Private Equity Law, 2023
- Lawdragon, 500 Leading Dealmakers in America
- MergerLinks, Ranked Third for Handling 25 Deals in the 2021 Top Mid Cap M&A Lawyers in North America, 2021
- Member, Board of Philanthropic Advisors, Children’s Hospital-Boston
- Georgetown University Law Center, JD, cum laude
- Boston College, BA, summa cum laude
- Massachusetts
- English
Nicolette Kost De Sèvres
Washington, DC
Paris
Nicolette Kost De Sèvres focuses her practice on global investigations, compliance and regulatory enforcement matters. A former financial regulator and general counsel of a large, listed company, she has over 24 years of experience in compliance, white-collar crime and financial regulation. Nicolette serves as co-head of McDermott Will & Schulte’s global investigations and compliance practice.
Nicolette has practiced in Paris, London, Sydney, Washington, DC, and Montreal, including at the New York Stock Exchange in Paris (NYSE Euronext) and the Royal Bank of Scotland in London. She also served as chief of staff and advisor to the president of the Financial Markets Authority in Canada under two different presidents.
- Implementation of compliance plans required by the Sapin II law and the law on the duty of care for various international groups whose registered offices are in France*
- Implementation of anticorruption and anti-money laundering compliance plans for many international groups operating in France*
- Assistance and representation before the World Bank in the context of investigations and the monitoring of compliance programs*
- Chambers France, Band 3 in Corporate Compliance & Investigations, 2026
- Thomson Reuters, Stand-out Lawyer – independently rated lawyers, 2025-2026
- The Legal 500 EMEA, Recommended, 2022-2025
- Global Investigations Review GIR 100, Recommended, 2023-2024
- Forbes, Top 40 Lawyers in France, 2022 and 2021
- Global Investigations Review, Top 100 Women in Investigations, 2021
- Women’s White Collar Defense Association, Member
- American Chamber of Commerce (AmCham) in France, board member
- Canadian Corporate Council Association Quebec, former president
- Quebec Bar, former member of the executive board
- University of New South Wales, PhD, ABD
- University of Montreal, LLM, Finance
- University of Montreal, JD, Technology and Regulation
- King’s College London, Certificate in EU Law
- District of Columbia
- Paris
- Québec
- English
- French
- Polish
Andrew Kim
New York – One Vanderbilt Avenue
Andrew Kim focuses his practice on corporate and transactional matters within the energy industry. He has a particular interest in renewable energy projects and extensive experience in tax equity investments across the United States as well as experience advising clients on a wide variety of domestic and cross-border financial transactions.
He regularly advises lenders, sponsors and investors on corporate finance, mergers and acquisitions, and general corporate matters.
While in law school, Andrew served as the Managing Editor for the Human Rights Law Review. He was also selected as the Intern of the Year by the International Refugee Assistance Project.
- Represented Chestnut Carbon, a nature-based carbon project developer, on the real estate aspects of a non-recourse project finance facility of up to $210 million
- Represented GoodLeap as originator and servicer in the first-of-its-kind back-leverage securitization (TIP 2025-1) on the investor cash flows, a $183.3 million offering by ATLAS SP Securities of Solar Asset Backed Notes sponsored by Tactical Infrastructure Partners LP and backed by approximately 7,800 residential solar systems and related cash flows. The transaction involved restructuring of existing preferred equity “partnership flip” transaction
- Represented Apex Clean Energy (Apex), a leader in renewable energy, in partnership with First Citizens Bank Energy Finance, on two financings totaling more than $150 million for battery energy storage projects in Texas
- Columbia Law School, JD
- University of Virginia, BA, Distinguished Major Program
- New York
- English
- Korean
James Grossman
Dallas
James Grossman is a trial lawyer who focuses his practice on complex commercial litigation, tort litigation and white-collar defense. He represents clients across various industries, including health care and manufacturing.
James has served as lead counsel in over a dozen successful jury and bench trials. He also has experience in all other facets of litigation, including evidentiary investigation, discovery, motion practice, dispositive hearings and jury selection.
Prior to joining the firm, James served as an Assistant District Attorney for the Dallas County District Attorney’s Office in the Organized Crime Division. There, James prosecuted felony crimes involving fraud, drug trafficking, murder, and prolific violent offenders.
James has also taught trial advocacy as a law school adjunct professor.
- Texas District and County Attorneys Association, member
- State Bar of Texas, member
- Brigham Young University J. Reuben Clark Law School, JD
- Brigham Young University Marriott School of Business, BS, cum laude
- Texas
- English
- Spanish
Nicholas F. Alarif
Washington, DC
Nicholas F. Alarif focuses his practice on healthcare regulatory and fraud and abuse matters, including the physician self-referral law (Stark Law), False Claims Act (FCA), the Federal Anti-Kickback Statute and other healthcare compliance matters. He also advises clients on the complex legal and factual issues surrounding Medicare Parts A–D reimbursement and other Centers for Medicare & Medicaid Services (CMS) payment policies. With his combination of in-house, federal government and Big Law experience, Nick provides well-rounded and actionable counsel to healthcare clients, with business objectives and compliance at the forefront.
- Chambers USA, Healthcare, 2025-2026
- Best Lawyers: Ones to Watch in America, Healthcare Law, 2025
- Appreciation and Achievement Award, Centers for Medicare & Medicaid Services, 2015
- American University Washington College of Law, Adjunct Professor of Healthcare Fraud & Abuse
- American Health Lawyers Association, Member
- California Society for Healthcare Attorneys, Member
- American University Washington College of Law, JD, cum laude
- University of Delaware, BS
- California
- District of Columbia
- Virginia
Dr. Laura Stammwitz
Frankfurt
Defending clients faced with cartel proceedings before the German Federal Cartel Office and the European Commission
Merger control proceedings before the German Federal Cartel Office and the European Commission and coordination worldwide
Foreign direct investment (FDI) screening proceedings before the German Federal Ministry for Economic Affairs and coordination worldwide
Antitrust compliance in day-to-day business and M&A transactions
Dr. Laura Stammwitz has been advising and representing companies for more than a decade in connection with dawn raids, antitrust investigations, and fine proceedings. She has vast experience in proceedings before the Federal Cartel Office and the European Commission and combines a robust litigation strategy with a clear understanding of operational processes, reputational risks, and business objectives.
Another key focus of her practice lies at the intersection with M&A transactions. Laura coordinates regulatory filings (merger control and FDI) and assists deal teams in identifying regulatory risks early on and factoring them realistically into the transaction process.
She regularly advises private equity investors, family-owned businesses, and multinational corporations, including those in the food, packaging, health & life sciences, medical technology, defence, technology, and industrial goods sectors.
Clients value her precise communication, her business acumen, and her pragmatic, solution-oriented advisory approach. Juve ranks her among the top 50 leaders in the field of investment control, and Lexology listed her as Competition Future Leader and therefore as one of the likely preeminent names of the next generation in competition law.
Laura Stammwitz regularly publishes on current developments. Among other works, she is an author of the renowned German antitrust law commentary “Kersting / Meyer-Lindemann / Podszun” (published by Beck).
Competition Future Leaders – Partners
Lexology Index, 2026
Recoginzed by
Handelsblatt/Best Lawyers™, Competition and Antitrust Law, 2026-207
The 50 Leading Minds
JUVE, Investment Control, 2024
Laura advised:
- an international manufacturer of metal packaging in cartel proceedings before the German Federal Cartel Office and the European Commission.*
- a food packaging manufacturer in appeal proceedings before the General Court of the Eu-ropean Union in connection with the European Commission’s “Food Packaging” cartel in-vestigation.*
- a leading food manufacturer before the German Federal Cartel Office in connection with the acquisition of a competitor, combining the number one and number two players in the market.
- Lexology Index, Competition Future Leaders – Partners, 2026
- WirtschaftsWoche, “The most renowned lawyers for Antitrust Law” in Germany, 2024-2026
- Handelsblatt/Best Lawyers™, Germany: Competition and Antitrust Law, 2026-2027
- Studienvereinigung Kartellrecht e.V.
- Member of the Board Kartellrechtsforum Frankfurt e.V., 2021-2024
- University of Bayreuth, Dr. jur.
- Higher Regional Court of Frankfurt, Second State Exam, 2006/2007
- University of Bayreuth, First State Exam and additional education in economics
- University of Birmingham, CertHE
- Germany
- English
- German
Guillaume Panuel
Paris
Guillaume Panuel focuses his practice on advising European sponsors on raising investment funds, and on a broad range of secondary transactions, including LP-stakes transactions and GP-led continuation funds. He also advises clients on preferred equity solutions and co-investments schemes.
Guillaume has 20 years’ experience in private equity secondaries, spin-offs of management teams and formations of domestic or transnational alternative investment funds (e.g., fonds professionnel de capital investissement (FPCI), fonds d’investissement professionnel spécialisé (FIPS), sociétés de libre partenariat (SLP).
Guillaume also assists management teams in dealing with regulatory and governance matters as well as carried interest arrangements.
Fund Formation
- Advised CAPZA/Artemid, an established European private investment platform with €8.2 billion of assets and offering financing solutions to small & mid cap companies, in connection with the fundraising of its new fund Artemid Senior Loan IV SLP (target size: €750,000,000)
- Advised ODDO BHF Asset Management, a leading independent asset manager in Europe with €57.3 billion assets under management (as of June 30, 2022) in connection with the structuring of its fund ODDO BHF Secondaries Fund II SLP (final closing: €715,000,000)
- Advised idiCo, a 20-year-old leading private equity firm focusing mainly on LBO and expansion capital operations in the BtoB Services, Healthcare and Tech sectors with €1.0 billion in assets under management, in connection with the structuring of its new fund idiCo Expansion 4 SLP (target size: €170,000,000)
- Advising Omnes Capital, a 20-year-old leading private equity firm dedicated to energy transition and innovation with €5.85 billion in assets under management, in connection with the structuring of its new fund Omnes Real Tech 2 FPCI (deep-tech start-ups) (target size: €250,000,000)
- Advising Karista, an early-stage venture capital firm founded in 2001 investing in Health, Digital, Tech, and NewSpace, in connection with the structuring of its new fund Karista Fund V SLP (target size: €150,000,000)
- The Legal 500 EMEA, Leading Individual in Private Equity: Fund Formation, 2021, 2023-2026
- Chambers France, Band 3 in Investment Funds, 2026
- The Best Lawyers in France, Private Equity, 2025 & 2026
- Chambers Europe, France: Investment Funds, 2023-2024
- Décideurs France, Private Equity: Fund Structuring, Excellent, 2023
- Décideurs-Stratégie Finance Droit 2021
- Legal Committee of France Invest, Member
- Paris Dauphine University – PSL, DESS
- University of Paris I Panthéon-Sorbonne, Master, MSG
- Paris Dauphine University – PSL
- Paris
- French
- English
