London
He regularly advises on IPOs, direct listings, follow-ons, de-SPACs, reverse mergers and takeovers on UK, U.S. and European stock exchanges, domestic and cross-border public and private M&A deals, venture capital, private and growth equity investments, debt financings, joint ventures, carve-outs, and restructurings, as well as on governance, disclosure, compliance, and strategic advisory matters.
His broad industry experience includes working with clients in the AI and technology, healthcare and life sciences, logistics, retail, media, marketing, financial services, energy and natural resources sectors.
Düsseldorf
Karsten represents clients in international arbitrations under all the main arbitral institutions, including the ICC and DIS, frequently acts as sole and party-appointed arbitrator and also represents clients before national courts in Germany with experience in setting aside and enforcement actions.
As a former M&A transactional lawyer Karsten has solid grounding in pre-contractual and contractual negotiations and advises among others, energy producers and distributors, both traditional (oil and gas) and renewables (solar, wind) construction conglomerates, financial institutions, JVs and biotech companies.
Karsten is praised for his "proactive and skillful" approach (Chambers Global) and has been recognized by Best Lawyers in Germany 2020 and Legal 500.
San Francisco
San Francisco
Peter served as the firm’s Chairman and Chief Executive Officer from 1986 to 1990 and as its Managing Partner from 1983 to 1986.
Paris; Paris Tech Studio
Paris; Paris Tech Studio
Léa assists startups and more mature technology companies in all stages of their development, from their creation to their fundraising operations and eventual sale.
Léa assists entrepreneurs in the development and implementation of governance strategies and employee incentive plans tailored to their needs.
She is particularly interested in the DeepTech and MedTech sectors.
Outside her practice, she lectures on venture capital at the EDHEC Business School.
Miami
His practice focuses on mergers and acquisitions, private equity investments, and securities transactions. He also counsels clients on corporate governance.
Santiago began his career at Willkie Farr in New York.
New York
Marsha’s broad transactional practice includes advising clients on complex securities and financing transactions, including initial public offerings, follow-on offerings and other equity offerings, high yield and investment-grade notes offerings, tender offers and exchange offers, mergers and acquisitions and de-SPAC transactions, as well as corporate governance and SEC compliance and disclosure matters.
Prior to joining Orrick, Marsha was at Kirkland & Ellis LLP and Cahill & Gordon LLP.
Marsha has been recognized in Super Lawyers Rising Stars (2016–2023).
Rome
As expert in Italian Administrative and Public Law, she has focused her career on advising private and public Italian and foreign companies, corporations and public administrations on public law regulatory and litigation matters, providing particular assistance in M&A transactions.
Mariangela has extensive experience working in all the areas of administrative law, especially in public contracts, urban planning and real estate, electronic communications, energy, aerospace and defense, life sciences, transportation and infrastructure, regulated services and also in litigation before Administrative Judge, Constitutional and European Court.
In 2025, she was appointed by the European Commission as member of the Stakeholder Expert Group on Public Procurement (SEGPP),” which supports the Commission in the reform of EU public procurement directives.
With an extensive background litigating before administrative law judges, Mariangela is a recognized leader in shaping public law policy in Italy. She has collaborated with the Italian Chamber of Deputies, the president of the Commission for Administrative Reform, overseeing the drafting of bills, parliamentary reports and regulatory proposals.
During her career, she has worked in both international and Italian law firms, as well as in boutiques specialized in administrative law.
She is a member of the Scientific Committee of the Italiadecide Association and oversee the Observatory on Public Contracts of the Association. She teaches at Master’s degree courses in administrative law as well as courses in public institutions
She is also an author of numerous publications in the field, rapporteur at conferences and public seminars and a researcher for private and public associations.
She is authorized to practice in the higher courts.
In 2021 Mariangela has been included by Top Legal among the best lawyers specialized in public procurement and concessions. In 2022 she was named infrastructure and PPP lawyer of the year by Legalcommunity.
Wheeling, W.V. (GOIC)
Jen is the Senior Practice Manager for the Litigation and Intellectual Property (IP) Business Units at Orrick. With 20 years of complex litigation practice experience, Jen plays a pivotal role in supporting the business and operational needs of Litigation and IP attorneys. Jen works closely with Leadership and various teams, including Talent, Marketing, Recruiting, and Finance, to drive and achieve key goals at the Business Unit, Practice Group, Partner, and Associate levels. She successfully implements strategies aimed at improving utilization, performance, professional development, efficiency, and profitability. Jen is highly committed to the professional development and retention of firm talent. She consistently mentors junior attorneys, fostering their professional growth and encouraging the development of strong practice management skills.
Milan
Claudia advises banks, private debt funds, sponsored investment vehicles, large corporations, and SMEs on domestic and cross-border leveraged and acquisition finance transactions, as well as corporate finance and refinancing transactions.
Before specializing in banking and finance, Claudia was also involved in M&A transactions, and she gained some experience in assisting Italian and foreign companies and private equity funds both in the corporate and in the financial aspects of acquisition and investment transactions.
Silicon Valley
Lynne led the trial team that obtained a complete defense verdict for Kleiner Perkins in Pao v. Kleiner Perkins, the high-stakes gender discrimination and retaliation case that garnered intense international media scrutiny. In naming Lynne “Litigator of the Week” for this victory, American Lawyer described her effective voir dire and how she “steadily poked holes in Pao’s testimony.” The Recorder called Lynne’s cross-examination “masterful” and Bloomberg reported that her “charismatic, intimidating oratory made her the trial’s breakout star.”
Following Pao, Lynne secured a complete defense verdict for SpaceX in an $8 million gender discrimination and retaliation suit. The Daily Journal called the outcome “another triumph for Hermle,” observing that her “string of successes for tech clients fighting off gender harassment and discrimination claims got longer.” The publication also pronounced Lynne to be “arguably the most feared employment defense attorney in California.” Eight months later she followed that up with another jury defense verdict for SpaceX in a wrongful discharge and retaliation case.
Lynne has significant experience successfully defending complex discrimination and wage-and-hour class actions for global leaders in the retail and technology sectors including Microsoft, X (formerly Twitter), The Gap, Genentech, Sears, Burlington Coat Factory, Gymboree, Spencer’s Gifts, Banana Republic, Old Navy, Williams Sonoma and Pottery Barn Kids, among many others.
In recognition of these successes and her high-profile career trial work, Lynne was inducted into the American College of Trial Lawyers in 2017. She is a fellow in the International Academy of Trial Lawyers and many other trial related organizations.
New York
He has represented U.S. and multi-national corporations engaged in a wide variety of industries, including retailing, radio and television broadcasting, automotive parts, printing and publishing, refining and packaging of petroleum products, manufacturing and distribution of wines, spirits and related products, hotels, food service, financial institutions, passenger airline, and freight forwarding companies.
Herbert has extensive experience in negotiating collective bargaining agreements, and has represented clients in a broad range of labor matters, including: union election and unfair labor practice cases, arbitrations and strike related matters. His practice also includes federal and state court and administrative agency litigation covering employment discrimination, wrongful discharge, ERISA, and wage-and-hour matters.
He has participated in establishing security programs for clients, helped design benefit plans, employment handbooks, and worked with clients on affirmative-action compliance reviews and safety and health matters. He has drafted and negotiated employment agreements, and has done extensive work in counseling and representing clients in merger and acquisition problems including negotiations with adverse parties, unions, and insurance carriers.
Herbert started his practice as an attorney for the National Labor Relations Board, and then worked for Proskauer, Rose, Goetz, & Mendelsohn. From 1972 to 1990, Herbert was a partner at the firm of Baer, Marks & Upham, where he chaired the employment law department, and was instrumental in building a labor and employee benefits practice.
He joined Orrick in 1991, and continued as a partner until 2002, when he retired from the partnership in order to devote more of his time to family obligations. He has continued to practice with Orrick since that time as counsel.
New York
David is a partner in Orrick's Complex Litigation and Dispute Resolution Practice Group based in New York and co-head of Orrick's Bankruptcy Litigation Working Group. His practice focuses on representing lenders, underwriters, and large public and private companies in financial disputes throughout the litigation process, from pre-litigation dispute resolution to success at trial.
David has litigated high-stakes bench and jury trials and pretrial proceedings involving nine-figure secured claims in bankruptcy, multi-billion dollar securities offerings, complex long-term supply contracts, and valuable trademarks.
David also has years of experience litigating distressed asset and syndicated loan trades, contract disputes, and residential mortgage-backed securities issuances for both plaintiffs and defendants. David's background in computer science and mathematics allows him to quickly master complex financial transactions and craft effective litigation strategies for his clients.
Before joining Orrick, David was an associate at Cravath, Swaine & Moore LLP.