Martin Kalbhenn focuses his practice on advising issuers, underwriters and other market participants on equity capital markets transactions, in particular initial public offerings (IPOs), capital increases/rights offerings and private placements as well as equity-linked transactions, such as convertible and exchangeable bonds. He also advises on general corporate law matters.
Prior to joining McDermott, Martin worked as a lawyer as well as a trainee lawyer at an international law firm in the field of equity capital markets.
- Advised the Riverside Company on the initial public offering of Bike24*
- Advised TUI AG on a rights issue from authorized capital against cash contribution*
- Advised Deutsche Beteiligungs AG on a rights issue from authorized capital against cash contribution*
- Higher Regional Court of Frankfurt, Second State Exam
- Bucerius Law School, First State Exam
- Germany
- German
- English
Dr. Lea Hachmeister
Dr. Lea Hachmeister advises companies and investors in the healthcare and life sciences market, with a focus on pharmaceutical and medical device companies. She specializes on transactions and strategic cooperations in the health and life sciences sector, regulatory issues, such as market entry and reimbursement channels for drugs and medical devices, as well as industry-specific data protection and compliance issues.
Lea advised:
- Pharmaceutical companies, wholesalers, pharmacies and medical devices companies on issues of pricing, market access and reimbursement by public and private payers, and public procurement
- Pharmaceutical and medical device manufacturers as well as health insurers in the area of digital health
- A global internet company on telemedical business models in times of the COVID-19 crisis
- The Legal 500 EMEA, Recommended, Germany: Healthcare and Life Sciences, and Commercial Administrative Law, 2024
- Support Association of the Research Centre for Pharmaceutical Law
- German Legal Society for Animal Protection Right
- Amnesty International
- Philipps-University of Marburg, Dr. jur.
- Higher Regional Court of Frankfurt, Second State Exam
- Philipps-University of Marburg, First State Exam
- Germany
- German
- English

Brian J. Tratner
Brian J. Tratner focuses his practice on corporate advisory matters, particularly those involving capital markets and public companies. He has extensive experience drafting public securities documents related to a broad range of capital markets activities.
- Represented AirSculpt Technologies, Inc. (NASDAQ: AIRS), a national provider of premium body contouring procedures, in connection with an underwritten public offering of common stock
- Represented AirSculpt Technologies, Inc. in connection with the launch of an “at-the-market” equity offering program
- Represented Esousa Group Holdings LLC, a New York-based family office, in its purchase of shares of common stock (or pre-funded warrants in lieu thereof) of Veritone, Inc. (NASDAQ: VERI), an artificial intelligence technology company, via a registered direct offering
- Columbia Law School, JD
- George Washington University, BA
- New York
- English
- Chinese (Mandarin)

Jason D. Kramer
Jason D. Kramer focuses his practice on mergers and acquisitions and private equity transactions. He advises strategic and private equity buyers and sellers on complex transactions across a wide range of industries, including technology, pharmaceuticals, consumer products, construction materials and manufacturing. He also regularly counsels clients in connection with corporate governance matters.
- Represented a global leader in the digital product market in its acquisition of one of the biggest US-based online education companies, for a combination of cash and stock consideration via a series of transactions including two mergers, additional equity investments by the client’s existing investors, and a rollover of certain equity into our client’s shares by management and key investors (Technology)*
- Advised a global pharmaceutical company in its acquisition of a clinical-stage biopharmaceutical company focusing on multiple indications in neurology and psychiatry, for a combination of upfront cash consideration and additional consideration payable upon development and sales milestones (Pharmaceuticals)*
- Advised a global private equity investor in its acquisition of a 51% stake in Argentina’s leading payments company from a group of 14 Argentinian banks and Visa International (Financial Technology)*
- New York City Bar Association
- Harvard Law School, JD, with distinction
- University of Western Ontario, BA
- New York
- California
- English
- French

Chloe Curtis
Chloe works with investors and growth-stage companies on raising seed capital, venture financings and negotiating commercial agreements. Chloe Curtis also advises clients on M&A transactions, including buy-side and sell-side representations and private equity acquisitions. Chloe has a broad range of corporate experience and provides counsel on general corporate and governance matters.
- Fordham University School of Law, JD
- Sotheby''s Institute of Art, MA
- Cornell University, BS
- New York
Caroline Samuelson
Caroline Samuelson focuses her practice on corporate advisory matters, particularly work involving capital markets and public companies. She has extensive experience drafting public securities documents relating to a broad range of capital markets activities.
Caroline represents public and private companies in connection with various securities transactions, including initial public offerings (IPOs), issuer and third-party tender offers, private placements (including private investment in public equities (PIPEs)), registered direct offerings, and Rule 144A offerings of debt and convertible debt. She also handles matters involving stock exchange listing, compliance with the Securities Exchange Act of 1934, corporate governance, and executive compensation disclosure.
- Represented Tether in its oversubscribed tender offer to acquire a controlling interest in Adecoagro S.A. (NYSE: AGRO)
- Represented Tether in its $775 million strategic PIPE investment and related tender offer in video sharing platform and cloud services provider Rumble (NASDAQ: RUM)
- Advised a Fortune 150, NYSE-listed company on proxy statement disclosure and Form 10-K drafting matters, as well as corporate governance topics
- Legal 500 US, Recommended, 2024
- Texas Young Lawyers Association, member
- The University of Texas at Austin School of Law, JD, with honors
- Washington and Lee University, BA, cum laude
- Texas

Benjamin Lee
Benjamin Lee focuses his practice on corporate and transactional matters.
While in law school, Benjamin served as a law clerk at the Los Angeles County District Attorney’s Office, Major Crimes Division. He was also a network writer for the Berkeley Business Law Journal and articles editor for the Asian American Law Journal. He also served as Asian Pacific American Law Students Association (APALSA) co-Chair.
- University of California, Berkeley School of Law, JD, high distinction
- University of California, Berkeley, BA
- California
- English
- Korean

Joshua A. Cohrs
Josh Cohrs focuses his practice on corporate and transactional matters.
While in law school, Josh interned at a North American pharmaceutical company. Prior to attending law school, Josh conducted research and developed medical technology for a North American medical device company.
- Chicago Bar Association, member
- University of Illinois College of Law, JD
- University of Illinois at Urbana-Champaign, BS
- Texas
- English

Michael Willey
Michael Willey advises public and private companies on complex corporate and transactional matters, focusing on mergers, acquisitions and dispositions. He also advises clients on corporate governance and general corporate matters. Michael’s experience includes representation of clients in a variety of industries, including healthcare, energy, construction, manufacturing and technology.
- The University of Texas School of Law, JD, with honors
- Husson University, MBA
- University of Vermont, BSBA
- Maine
- Massachusetts

Erin L. Fraser
Erin Fraser focuses his practice on private client matters. He advises global and US family offices and ultra-high-net-worth individuals on strategic planning around wealth transfers and preservation, including the formation of trusts and new entities to hold real estate or other investments, the establishment and management of private trust companies, information and beneficial ownership reporting, and charitable entities and giving.
- Created a customized, complex private trust company, serving as trustee of trusts with more than $1 billion in assets
- Provided Foreign Account Tax Compliance Act compliance analysis and advice for international private wealth structures involving non-US trusts, private trust companies, and investment companies
- Structured and implemented foreign and domestic estate plans for multijurisdictional families
- Coordinated the preparation of a federal estate tax return for a substantial US estate and advised on other post-death trust administration issues
- Advised a charitable organization on withdrawal from the California registry of charities and fundraisers and the windup of operations
- Negotiated the termination of a split-interest trust with the California Attorney General’s Office and the correction of an erroneous delinquent registration status
- Advised on the Internal Revenue Service examination of a California charitable entity and secured a no-change close to the exam*
*Matter handled prior to joining the firm
- Best Lawyers in America, Trusts and Estates, 2027
- Super Lawyers, Northern California Rising Star, 2020 and 2021
- The Best Lawyers in America, Ones to Watch in Trusts and Estates, 2020–2023
- Jewish Community Federation and Endowment Fund of San Francisco, Professional Advisor’s Network, steering committee member
- New York University School of Law, LLM, Taxation
- University of Minnesota Law School, JD, Economics & Political Science
- University of Rochester, BA
- California
- New York
- US Tax Court
- US District Court for the Eastern District of Wisconsin
