Prof. Dr. Clemens Just advises clients on all aspects of corporate law and M&A transactions. He has extensive experience acting for financial and strategic investors and on private and public takeovers. His experience includes corporate restructurings and insolvency law issues.
Furthermore, Clemens has been admitted as a civil law notary (“Notar”) in Frankfurt am Main since 2018.
Clemens also publishes and lectures regularly on these topics, including at the Frankfurt School of Finance.
Clemens advised:
- The sole shareholder on the sale of all shares in isel Germany, as well as the real estate used for operations, to Dutch listed Aalberts
- Volkswagen Financial Services on its joint venture with J.P. Morgan International Finance in Volkswagen Payments
- CWS-boco International on the acquisition of all shares in profi-con Contamination Control including its international subsidiaries
- Chambers Europe, Band 5 in Germany: Corporate/M&A: Mid-Market, 2026
- Handelsblatt/Best Lawyers™, Germany: Mergers and Acquisitions Law, Private Equity Law, Corporate Law, Litigation and Public Law, 2018-2027
- JUVE Handbook of Commercial Law Firms, Recommended: Corporate Law, 2023-2026
- The Legal 500 EMEA, Recommended, Germany: Corporate M&A: Corporate, 2022-2024
- British German Jurists’ Association
- Appointment as Civil Law Notary (“Notar”)
- Court of Appeal, Berlin, Second State Exam
- University of Freiburg, Dr. jur.
- London School of Economics and Political Science, LL.M.
- University of Freiburg, First State Exam
- Germany
- England and Wales
- German
- English
- French
- Italian
- Spanish

John P. Hammond
John P. Hammond represents financial institutions, agent banks, public and private company borrowers, and private equity sponsors in all types of secured and unsecured debt financings, including asset-based lending, acquisition financings, health care financings, cross-border financings, employee stock ownership plan (ESOP) financings, capital call liquidity facilities, senior subordinated debt and mezzanine transactions.
- Represented private equity groups and their portfolio companies in connection with negotiation of debt commitment letters for the purposes of funding acquisitions, including senior secured credit facilities, secured second-lien credit facilities, unitranche facilities and mezzanine debt facilities
- Represented a leading diversified industrial company in its $900 million senior secured revolving and term loan credit facilities and its $300 million registered senior notes
- Represented the administrative agent and arranger in a $320 million senior secured syndicated credit facility to the nation’s largest independent specialty pharmacy
- Chambers USA, Banking & Finance, 2025-2026
- The Legal 500
- American College of Investment Counsel, fellow
- Chicago Debate Commission, board of directors
- Ladder-Up Tax Assistance Program, volunteer
- University of Michigan Law School, JD
- George Washington University
- Illinois

L. Timothy Halleron
L. Timothy Halleron focuses his practice on high-net-worth tax and estate planning matters. Tim advises individuals and family offices in planning for the preservation and transfer of wealth within families without the imposition of gift, estate or generation-skipping transfer tax.
- Best Lawyers in America, Trusts and Estates, 2020-2027
- Chambers High Net Worth, Illinois: Private Wealth Law, 2025-2026
- Chicago Bar Association, Trust Law Committee
- Board member, Chicago Arts Partnerships in Education (CAPE)
- Planned giving committee member, Shedd Aquarium
- A member of the American College of Trust and Estate Counsel (ACTEC)
- Maurice A. Deane School of Law at Hofstra University, JD, with distinction
- College of the Holy Cross, BA
- Illinois
- New York

Katie C. Gose
Katie C. Gose’s practice focuses on estates, trusts and tax planning for high-net-worth clients. She has experience drafting and administering dynasty trusts, supervising trust administrations, preparing federal estate and gift tax returns and working with private foundations.
- Best Lawyers in America, Ones to Watch, Trusts and Estates, 2022 to 2025
- Harvard Law School, JD, cum laude
- Princeton University, BA, magna cum laude
- California

Gary B. Gertler
Gary B. Gertler represents hospitals, health care systems, managed care organizations, multi-specialty and single specialty medical groups, health care companies, ancillary management companies and other health care providers. He focuses on mergers, acquisitions and divestitures, strategic affiliations, private equity and debt transactions, hospital-affiliated group practices, joint ventures and syndications and health care regulatory and corporate matters. Gary previously served as the managing partner of the Los Angeles office.
- Served as lead transaction counsel for a private for-profit hospital system’s acquisition and conversion of a nonprofit five-hospital health care system
- Served as lead transaction counsel in representing a publicly traded hospital system in its acquisition of 12 separate group practices (each between seven and 23 physicians) over a three-year period
- Served as lead transaction counsel for an esoteric clinical laboratory in connection with restructuring its governance, and preparing a private placement memorandum (PPM) that raised $71.1 million for a private equity-owned radiation oncology management company through the sale of additional equity interests
- Legal 500 US, praised as arguably the “most practical, knowledgeable legal advisor in healthcare,” 2015-2018
- Chambers USA, 2007- 2010, 2013-2025
- Best Lawyers in America, Healthcare Law, 2011-2027
- BTI Consulting Group, Client Service All-Star, 2023-2024
- American Health Lawyers Association
- California Society of Healthcare Attorneys
- University of Southern California Gould School of Law, JD
- University of California, Los Angeles, MPH
- University of California, Los Angeles, BS
- California
- US Court of Appeals for the Ninth Circuit
- US District Court for the Central District of California

Jon Dean
Jon Dean is the Head of the Los Angeles Litigation Practice. He focuses his practice on complex commercial litigation matters, including patent and trade secrets cases, antitrust actions, securities matters, unfair competition cases, trademark disputes, employment actions, OSHA cases and healthcare matters. Jon is a former prosecutor and an experienced trial lawyer, having served as trial counsel on both civil and criminal cases.
Some of Jon’s noteworthy cases include the following:
- Trial counsel and lead appellate counsel for the defendant, a leading maker of office headsets and videoconferencing products, in connection with a trade secret misappropriation action; in a sweeping published opinion entered shortly before trial, the court granted summary judgment in favor of the defendant (US District Court for the Northern District of California (2019-2023); Ninth Circuit Court of Appeals (2023))
- Trial counsel and lead appellate counsel for the defendant, a major on line short term rental (STR) platform, on a landmark California Coastal Act matter in which the plaintiff seeks a state-wide injunction concerning all STRs located within California’s 1,100 mile long coastal zone; after oral argument on defendant’s demurrer, the matter was dismissed by the trial court and was subsequently unanimously affirmed by a published opinion of the court of appeal; the matter is currently pending with the California Supreme Court (California Superior Court, Los Angeles County (2021); California Court of Appeal (2022-2023); California Supreme Court (2023-present))
- Trial counsel and lead appellate counsel for the defendant, a well-known luxury candy company, in connection with an unfair competition and trademark misappropriation action; immediately before trial the court summarily adjudicated all claims in favor of the defendant primarily on the grounds of genericness and damages; the matter is currently pending on appeal (US District Court for the Central District of California (2018-2023); Ninth Circuit Court of Appeals (2023-present))
- Legal 500 US, 2020-2024
- Best Lawyers in America, Healthcare Law, 2021-2025
- Daily Journal, Leading Commercial Litigator, 2024
- Benchmark Litigation, 2009-2023
- Chambers USA, Litigation: White-Collar Crime & Government Investigations, 2021
- McDermott Los Angeles Pro Bono Committee, current chair
- Western Justice Center, past member of the board of directors
- Legal Aid Foundation of Los Angeles, past member of the board of directors
- University of California, Berkeley School of Law, JD
- University of California, Los Angeles, BA
- California
- US Court of Appeals for the Second Circuit
- US Court of Appeals for the Third Circuit
- US Court of Appeals for the Ninth CircuitUS Court of Appeals for the Federal Circuit
- US District Court for the District of Arizona
- US District Court for the Central District of California
- US District Court for the Northern District of California
- US District Court for the Southern District of California
- US District Court for the District of Colorado
- US District Court for the District of Delaware
- US District Court for the Middle District of Florida
- US District Court for the District of Idaho
- US District Court for the District of South Carolina
- US District Court for the Eastern District of Texas
- US District Court for the Northern District of Texas
- US District Court for the Western District of Texas

Emily Jane Cook
Advises healthcare providers, from startups to established market leaders, on complex federal and state regulatory and reimbursement matters
Serves as a national authority on the 340B Drug Pricing Program
Counsels clients on fraud and abuse laws, Medicare provider-based and co-location rules, pharmacy laws and licensure, graduate medical education, rural providers, and federally qualified health centers
Advises on the development of innovative healthcare delivery models
Emily Jane Cook serves as counsel to clients in the healthcare sector, ranging from startups to established market leaders, on a wide range of critical regulatory and reimbursement matters to ensure compliant business operations. Her guidance allows these organizations to manage the risks associated with operating in a high-complexity and highly regulated sector.
- Obtained favorable outcomes for clients in False Claims Act whistleblower actions, government investigations, regulatory appeals, and self-disclosures to federal and state regulatory agencies, preserving government program participation and avoiding administrative penalties
- Represented clients in landmark litigation that overturned long-standing 340B Program policies that limited opportunities for 340B providers to fully realize the congressional intent of the 340B Program
- Counseled many large national health systems and academic medical centers through the development and implementation of innovative care models, including collaborative care models across facilities and between different types of clinical professionals, intended to maximize care quality and efficiency while maintaining regulatory compliance
- Advised many 340B providers on the implementation of 340B Program operational and care delivery models to compliantly expand 340B Program revenue and opportunities to grow healthcare offerings in their communities
- Successfully appealed adverse findings in government audits of 340B Programs for multiple hospital clients and negotiated corrective action plans, enabling the hospitals to continue leveraging program participation for their patients and communities
- Chambers USA, Healthcare, 2021-2027
- Best Lawyers in America, Healthcare Law, 2019-2026
- Thomson Reuters, Stand-Out Lawyer – independently rated lawyers, 2021-2025
- JD Supra, Readers’ Choice Awards, Top Author in Life Sciences (2024), Top Author in Healthcare, 2025
- Lexology, Legal Influencer for Healthcare and Life Sciences – US, Q1 2023 and Q4 2024
- McDermott, Healthcare Regulatory & Compliance Practice Group, practice area leader
- McDermott, Gender Diversity Committee, member and mentor
- American Health Law Association, Medicare and Medicaid Institute, chair; Planning Committee for Institute on Medicare and Medicaid Payment Issues, member
- Representing Hospitals and Health Systems, American Health Law Association, contributing editor
- University of Chicago Law School, JD, with honors
- University of North Carolina at Chapel Hill, MSPH, Delta Omega honor
- Duke University, BA, cum laude, with distinction
- California
- District of Columbia
- English
Dr. Michael Cziesla
Dr. Michael Cziesla advises clients in complex corporate transactions, specializing in multi-jurisdictional and cross border M&A and Private Equity transactions, including secondaries, leveraged buyouts, divestments and reorganisation, and joint ventures.
Michael advises both German and international private equity funds, corporates and insurance companies across a range of sectors with an emphasis on technology and regulated industries (including healthcare and life science as well as financial services).
Michael advised
- Investcorp on the Sale of Contentserv to Centric Software
- Silver Lake and its portfolio company Cegid on the acquisition of German software provider sevdesk
- VR Equitypartner on merger of solectrix and ASSDEV
- JUVE Handbook of Commercial Law Firms, Recommended: M&A as well as Private Equity and Venture Capital: Private Equity Transactions, 2022-2025
- Handelsblatt/Best Lawyers™, Germany: Mergers and Acquisitions Law and Private Equity Law, 2021-2025
- The Legal 500 EMEA, Recommended, Germany: Private Equity Transactions, 2022-2024
- BYU Management Society
- J. Reuben Clark Law Society
- Johannes Gutenberg University Mainz, Dr. jur.
- Higher Regional Court of Frankfurt, Second State Exam
- Kiel University, First State Exam
- Germany
- English
- German

Christoph Coenen
Christoph Coenen advises leading global financial institutions and investors on a broad variety of often highly complex cross-border and domestic leveraged, project, real estate and acquisition finance transactions. His experience includes senior and mezzanine acquisition and leveraged financings, bridge facilities, structured financings, real estate financing, project finance transaction, promissory notes (Schuldscheindarlehen) as well as other banking and restructuring matters.
His long-standing track record in the area of real estate finance includes landmark-transactions such as Silberturm, Highlight Towers and Elbtower as well as the financing of shopping centers, logistic assets, residential portfolios and large-scale property developments.
Furthermore, Christoph has a particular focus on the renewable energy sector, where he has advised financial institutions and investors for many years on a large number of domestic and international project financings relating to all different kinds of renewables facilities (including offshore and onshore wind, solar and biomass). Christoph has also gained experience in advising on PPP-type transactions.
Previously, Christoph worked for a leading global law firm for 11 years in Frankfurt and London with a focus on asset-based lending, project finance and real estate finance.
He is a regular lecturer at EBS University for Business and Law in Oestrich-Winkel.
Christoph advised:
- Union Investment Real Estate on the Sale of FÜNF HÖFE in Munich
- KKR and Mirastar, the European industrial and logistics platform of KKR Real Estate, on the acquisition of a logistics property in Hanover. The transaction is the first acquisition by KKR and Mirastar in this asset class in Germany and also the first German acquisition for KKR’s pan-European Core+ Real Estate strategy.
- Contentserv Group and its majority shareholder Investcorp on the acquisition of the French software company Shoppingfeed
- Numerous residential, retail, logistic, office, nursing home and other single and portfolio real estate transactions
- A client on a broad variety of corporate finance transactions, including Schuldscheindarlehen
- A client on the financing of agricultural projects in Africa
- A client on the structuring of energy efficiency project financings
- A client on the financing of climate protection projects
- Handelsblatt/Best Lawyers™, Germany: Banking and Finance Law and Corporate Law, 2021-2027
- The Legal 500 EMEA, Recommended, Germany: Real Estate Finance, 2023-2024
- IFLR1000, Banking, 2023
- Saarland Higher Regional Court, Second State Exam
- Saarland University, First State Exam
- Germany
- English
- German

Dr. Maximilian Clostermeyer
Dr. Maximilian Clostermeyer advises a wide range of corporate clients and institutional investors on real estate matters. He has significant experience in large portfolio transactions as well as transactions regarding major single assets by way of share deals, asset deals, or joint venture structures in all asset classes. He also advises clients on all other aspects of real estate law including project development advice.
Furthermore, his practice includes corporate law work, especially in connection with M&A transactions.
Maximilian advised:
- Schoeller Invest on the acquisition of the “Upper West” in Berlin
- ReInvest on the acquisition of, among others, the office buildings “Lombardhaus” in Hamburg and “Helmholtz” in Munich
- IMFARR on the acquisition of the “Silberturm,” the “Nestlé Campus” in Frankfurt am Main, and the “HighLight Towers” in Munich
- CA Immo Deutschland on the sale of various properties and portfolios
- Montano Real Estate in connection with various transactions
- OfficeFirst on the sale of a real estate portfolio
- A German family office on the acquisition of U.S. real estate assets
- JUVE Handbook of Commercial Law Firms, Recommended: Real Estate and Construction Law: Real Estate Law as well as Project Development and Plant Construction, 2022-2025
- Handelsblatt/Best Lawyers™, Germany: Real Estate Law and Mergers and Acquisitions Law, 2022-2027
- The Legal 500 EMEA, “Next Generation Partner” in Germany: Real Estate Law, 2023-2024
- Frankfurt Bar Association
- Higher Regional Court of Frankfurt, Second State Exam
- Heidelberg University, Dr. jur., summa cum laude
- Heidelberg University, First State Exam
- Germany
- English
- German
