People

Sabrina Benyammi Senior Associate

Silicon Valley

She advises companies throughout their lifecycle, including in formation and general corporate matters, venture capital financings and mergers and acquisitions. In addition to advising companies, Sabrina represents leading venture firms in connection with their investments in private companies.

Peter C. Bergan, Jr. Partner

Chicago

With over a decade of experience, Peter has guided clients through joint ventures, investments, financings and acquisitions/dispositions across commercial, digital infrastructure, industrial, mining, retail, hospitality, and multifamily and single-family assets nationwide.

He brings a unique focus to data center and digital infrastructure assets with a broad perspective, advising on construction, M&A, leasing, customer and other contracts. From hyperscale facilities and colocation centers to enterprise and cloud-based solutions, he draws on his experience with industry stakeholders to deliver clear, confident guidance to clients navigating this increasingly dense space.

Beyond the office, Peter is committed to community service, serving as a board member for Rugby Ohio, an organization dedicated to supporting the growth and development of children and teenagers through the game of rugby. He is also an active member of the Urban Land Institute and the International Council of Shopping Centers.

Crissi Berger Practice Manager of Energy and Infrastructure

Washington, D.C.

Crissi's practice focuses on project development, project financing, and acquisitions in the energy and infrastructure sectors.

Prior to Orrick, Crissi worked as an assistant superintendent for a construction firm, where she managed teams of subcontractors, architects, and engineers to build projects in the residential, mixed-use, office, and education sectors.

Genet Berhane Innovation Attorney Energy and Infrastructure

New York

Genet supports firm efforts to optimize client service delivery and increase efficiencies across practice groups, connecting Orrick attorneys with tools and resources to support their work.

Genet’s practice previously focused on a variety of energy transactions as a managing associate in the firm's Energy & Infrastructure group. She has also worked as Senior Counsel at Clearway Energy and as a Legal Manager at Acumen, a non-profit global venture fund.

Jesse Beringer Senior Associate

Washington, D.C.

Jesse routinely handles all aspects of civil and class action litigation, including arbitration and trial. She applies her knowledge of the federal rules and the discovery process to litigation matters across a wide array of industries—including technology, energy, and healthcare—from the outset to think strategically and pragmatically with clients about how to obtain the best result in each circumstance.

Recently, Jesse was the lead associate on the trial team in client Zillow Group, Inc.’s successful defense against false advertising litigation in the Western District of Washington, REX—Real Estate Exchange, Inc. v. Zillow Group Inc., where the jury delivered a full defense verdict.

Jesse also has substantial experience concerning mergers and acquisitions and competition-related investigations before the DOJ and FTC, including compliance with onerous Second Request merger investigations.

Prior to joining Orrick, Jesse was a litigation associate in the Washington, DC office of another international law firm.

Olivier Bernard Partner

Paris

Olivier advises French and international financial institutions, insurers, funds and other alternative capital providers, as well as borrowers, on structured finance, debt capital markets and securitization transactions, in relation to a variety of assets, including real estate, transportation fleets and infrastructure.

He has been involved on a number of groundbreaking multi-jurisdictional transactions, privately or publicly placed.

Before joining Orrick in 2016 as a partner, Olivier was counsel in the finance department of Freshfields Bruckhaus Deringer.

Carsten Bernauer Partner

Düsseldorf; Munich

A special focus is on the comprehensive support of start-up technology companies and their investors. In this context, he accompanies his clients through all stages of growth with the aim of providing fast and efficient support in the implementation of their growth plans and investment strategies.

His clients benefit from his extensive experience in structuring, managing and coordinating complex transactions, including all other advisors involved in the transaction. In international transactions, he has access to Orrick's comprehensive technology, private equity and venture capital platform.

Carsten Bernauer also advises on national and international corporate transactions, in particular in the field of technology, as well as on corporate restructurings.

After many years working for an American and an English commercial law firm, Carsten Bernauer joined Orrick's Düsseldorf office in 2019.

William Berry Senior Counsel

San Francisco

William also has substantial experience with the employee benefit aspects of sales and acquisitions of businesses (including bankruptcy transactions), the restructuring of defined benefit pension plans, the defense of ERISA class action litigation, and public pension plan matters.

His clients include a wide range of large and medium-sized corporations, as well as individual and public clients. He also provides tax and retirement planning advice to many of Orrick's corporate clients.

William has been a frequent lecturer on employee benefits and related individual tax and fiduciary topics for the American Law Institute-American Bar Association; California Continuing Education of the Bar; the International Foundation of Employee Benefit Plans; the Practicing Law Institute; the Western Pension & Benefits Conference; various Bay Area Estate Planning Councils; and other organizations.

William became a senior counsel in 2013 after having been an Orrick partner since 1999.  Before joining Orrick, William was a partner at the law firm of Pillsbury Winthrop LLP in San Francisco.

Geoffroy Berthon Partner

Paris

Geoffroy advises on public contracts, particularly in the context of concessions and PPPs. He has been involved in projects relating to the financing, construction and operation of the Stade Vélodrome in Marseille; the Sud Europe Atlantique high-speed line; the Athletes' Village for the Paris 2024 Olympic Games; the Grand Paris Express and the offshore extension of the Principality of Monaco. He has also worked on several French highway (A412, A69, RCEA, A88, A41, A150), port (Calais, Cannes) and airport projects (Nice, Lyon, Beauvais).

In the renewables field, he acts alongside the French government (Ministry of Energy Transition) in calls for tenders for the construction of offshore wind farms, including floating wind turbines, and advises operators in the realization of biomass and geothermal projects, as well as investors in the context of "M&A" operations concerning wind and solar assets and methanization. He also has experience in hydroelectricity matters. He advises both sponsors and lenders and works regularly with public entities and governments. He also advises on the drafting and negotiation of corporate PPAs, acting for both energy producers and buyers.

Geoffroy Berthon is recognised by clients as "a high quality lawyer whose analyses are very precise and rigorous and whose pragmatic approach is highly regarded" (Legal 500) and as a Leading Individual by Legal 500 (EMEA 2023) in public law and energy.

Geoffroy holds a doctorate in public law, was a lecturer in public contract law at Sciences Po, and frequently published in both English and French.

Josh Beser Partner

New York

Josh is a member of Orrick’s Technology Companies Group, representing high-growth technology companies and their investors in a range of corporate matters, including corporate and securities law, corporate formations, venture and growth capital financings, mergers and acquisitions, public offerings, and secondary offerings. Josh brings a unique perspective to working with founders and company leadership at venture-backed companies as they scale, often serving as the company’s primary outside counsel from early-stage financing through exit. He is especially skilled serving as outside general counsel to companies as they reach growth inflection points, often ranging from Series Seed to Series C and beyond, where business and legal issues tend to multiply and the experience of outside counsel with deep operating experience is particularly valuable. He is an integral part of the firm’s presence in New York and its commitment to tech & venture ecosystem in the region.

Josh’s clients include Misfits Market, Skims, Studs, Away, Crossbeam, Topline Pro and Earth Breeze. In addition, Josh regularly works with early-stage investors and venture studios such as TMV and 25madison.

Josh is a leader in the startup ecosystem in New York, as a founding member of TechGC in New York City, a mentor to growth-stage general counsels in collaboration with First Round Capital’s Fast Track program and since 2012, as a mentor to early-stage founders through ERA.

Before joining Orrick, Josh was a partner in the New York office of Wilson Sonsini Goodrich & Rosati. Prior to WSGR, Josh served as general counsel at Away, a direct-to-consumer travel brand twice named as one of Fast Company’s “Most Innovative Companies” and as one of Time’s “50 Most Genius Companies,” among other honors. At Away, Josh was a member of the executive team, served as corporate secretary, and built and led teams in a wide range of operational functions, including information security, real estate, and global trade. Josh built and implemented Away’s legal strategy and infrastructure at scale and led Away’s legal team through substantial revenue and headcount growth, international sales, operations and retail expansion, Series C and Series D financings, growth-stage debt financing, liquidity transactions, global intellectual property development and brand protection programs, public company readiness, and executive transitions.

Ari Bessendorf Partner

Singapore

Ari’s practice cuts across sectors, including conventional power, renewable energy (solar, wind, geothermal, hydroelectric), infrastructure, oil & gas and mining throughout the United States and Asia. His combination of project development and finance experience allows him to advise clients on bankability considerations for development matters.

Clients commend him for being “meticulous on the finer details”, and “a firm but calming and amiable presence at the negotiating table.” They add that “he gained our trust” and has “a cost-effective approach and a drive to successfully close deals.”

Chiara Bettinzoli Associate

Milan

Chiara assists the team in advising companies and individuals in investigations in relation to white-collar crimes (such as anti-money laundering, financial crimes, corporate crimes, bankruptcy crimes, tax crimes, environmental crimes, occupational health and safety crimes).

Chiara participates in carrying out internal investigations aimed at strengthening the internal control systems of leading national and international companies.

Chiara also collaborates on an ongoing basis in advising major companies and corporate groups in managing potential compliance risks, in particular in relation to the Organisational, Management and Control Models adopted pursuant to Legislative Decree no. 231/2001.

Chiara has been appointed as member of Supervisory Body (Organismi di Vigilanza) of Italian companies.
Since November 2024, Chiara is a PhD student at Università Cattolica del Sacro Cuore of Milan (PhD in business, labour, institutions and criminal justice).

Since 2023, Chiara has been teaching assistant in Business and Corporate Criminal Law at Università Cattolica del Sacro Cuore of Milan.

Chiara graduated with honours from Università Cattolica del Sacro Cuore of Milan following a study period spent at the University of California - Berkeley.

Chiara is fluent in English, French and Spanish