New York
Jose DeJesus is a paralegal in the Finance Business Unit and the Public Finance practice group. He has participated in financings in which the firm has served as bond counsel, underwriter’s counsel and borrower counsel for various tax-exempt and taxable municipal and project financings. He works mainly for the Energy and Infrastructure Group. His duties include preliminary drafting of documents and UCC financing statements, preparation for and assisting with closings as well as post-closing matters. He has been with the firm since 1995 and has been working as a paralegal since 1984.
New York
He is also the founder of the firm’s Whistleblower Task Force. He previously served as the Managing Director of Orrick’s Litigation Division. The practice group under Mike’s leadership was chosen as one of the top national employment law practices by Law 360.
Chambers USA and Chambers Global has ranked him in Band 1 since it began publishing its rankings, noting he is "a giant of the employment bar, widely regarded as an expert in whistleblowing matters and sex harassment claims,” “sought out by premier clients to handle high-stakes employment litigation and investigations,” and "one of the best lawyers on the East Coast for financial institutions."
Mike has an active trial, arbitration, and appellate practice and handles a number of high-visibility class action and impact cases. He is regularly retained by boards of directors and audit committees to conduct high exposure internal investigations of corporate wrongdoing.
Milano
Assiste regolarmente società nazionali e internazionali, investitori e altri stakeholder – inclusi lenders e sponsor - in un’ampia gamma di operazioni finanziarie. La sua attività si concentra in particolare nel project finance, con focus su infrastrutture ed energia, nel leveraged e acquisition finance (inclusi i finanziamenti a supporto di offerte pubbliche e private per target sia italiani sia esteri), nel private debt, nel real estate finance, nei finanziamenti garantiti da agenzie di credito all’esportazione (ECA-backed financings), in operazioni di ristrutturazione e investment-grade loans.
Gran parte dei mandati seguiti da Frédéric hanno una dimensione cross-border, e prevedono assistenza legale coordinata attraverso diverse giurisdizioni. Vanta una solida esperienza nella consulenza su operazioni che coinvolgono mercati emergenti.
San Francisco
Karen is involved in a full range of corporate legal projects for high growth technology companies including venture financings, public offerings, public company securities law compliance matters and mergers and acquisitions. She also regularly advises public companies and board of directors on corporate governance issues. Karen's clients include private and public companies in the biotechnology, real estate, finance and Internet related industries. She also represents underwriters in initial public offerings and follow-on offerings and venture capital firms in investment transactions.
Karen is a frequent speaker on corporate and securities law topics including Initial Public Offerings, Corporate Governance and Sarbanes-Oxley matters. She is also Co-Editor of Part III of Venture Capital & Public Offering Negotiation, published by Aspen Law & Business.
Before joining Orrick, Karen was a shareholder at Heller Ehrman LLP and was chair of their firmwide corporate governance practice group.
Monaco
Adrian represents clients in domestic and cross-border transactions, in particular local and international companies, private equity/venture funds and growth companies.
In addition Adrian acts as a business angel for several venture capital start-up companies.
Parigi
Alexandre is involved in project financing and acquisition financing in the energy and infrastructure sectors. He advises sponsors (industrial and funds), financial institutions and governments.
He works on high-profile transactions in the French market, as well as on cross-border transactions. His area of expertise covers a wide range of financing operations (senior, junior, mezzanine, loans, and bond issues).
His experience includes public-private partnership financings, telecommunications, transportation, and renewable energy projects (in particular in the photovoltaic sector).
Before joining Orrick, Alexandre spent five years at a leading American law firm, where he developed significant expertise in financing.
Los Angeles
He advises lenders and corporate borrowers in a wide range of secured lending facilities and commercial financing transactions.
Blake was a summer associate in the firm's Los Angeles office in 2022.
Roma
Esperta di diritto amministrativo e pubblico, nel corso della propria carriera ha prestato consulenza a imprese private e pubbliche, italiane e straniere, oltre che a corporations e pubbliche amministrazioni in materia di diritto pubblico e nel contenzioso, anche nel contesto di operazioni di M&A.
Mariangela ha maturato una vasta esperienza in tutte le aree del diritto amministrativo, in particolare nei settori contratti pubblici, urbanistica, real estate, comunicazioni, energia, aerospazio e difesa, life sciences, trasporti e infrastrutture, servizi regolamentati, nonché nel contenzioso dinanzi ai tribunali amministrativi, alla Corte costituzionale e alla Corte europea.
In qualità di avvocato cassazionista, è abilitata a rappresentare i propri clienti davanti alle Giurisdizioni superiori.
Nel 2025 è stata nominata dalla Commissione europea come membro dello Stakeholder Expert Group on Public Procurement (SEGPP)", che supporta la Commissione nella riforma delle direttive europee sugli appalti pubblici.
Grazie alla rilevante esperienza nel contenzioso davanti ai giudici amministrativi, Mariangela ha contribuito alla definizione delle politiche di diritto pubblico in Italia. Ha collaborato con la Camera dei Deputati e con il presidente della Commissione per la riforma amministrativa, supervisionando la stesura di disegni di legge, relazioni parlamentari e proposte normative.
Nel corso della propria carriera, ha lavorato in studi legali italiani e internazionali e in boutique specializzate in diritto amministrativo.
Mariangela è membro del Comitato scientifico dell'Associazione Italiadecide e supervisiona l'Osservatorio sui contratti pubblici dell'Associazione. È docente in corsi di laurea magistrale in diritto amministrativo e in corsi per le istituzioni pubbliche. È inoltre autrice di numerose pubblicazioni in materia, relatrice in convegni e seminari pubblici e ricercatrice per associazioni private e pubbliche.
Nel 2021 Mariangela è stata inserita da TopLegal tra i migliori avvocati specializzati in appalti pubblici e concessioni. Nel 2022 è stata nominata avvocato dell'anno in materia di infrastrutture e PPP da Legalcommunity.Roma
Alessandra presta assistenza a clienti italiani e stranieri nel settore degli appalti pubblici, project financing e concessioni, infrastrutture, energia e ambiente, sia in ambito giudiziale che stragiudiziale.
È autrice di articoli in materia di diritto amministrativo pubblicati su riviste giuridiche di settore.
Prima di entrare in Orrick, ha maturato esperienza nel settore della contrattualistica pubblica presso un primario studio internazionale.
Laureatasi a pieni voti, Alessandra ha conseguito un master di II livello in Diritto Amministrativo (MIDA) presso la LUISS School of Law nel 2023.
Ha conseguito l'abilitazione all'esercizio della professione forense ed è iscritta all'Ordine degli Avvocati di Roma.
Parigi
Marc advises investment funds, industrial groups, listed companies, and startups, both French and international, on all aspects of business law, particularly in the context of acquisitions, disposals, mergers, reorganizations, and strategic partnerships.
He is particularly active in the infrastructure, renewable energy, and new technology sectors, both in France and internationally.
In 2025, the international guide Legal 500 EMEA named him in the Key Lawyer category in Private equity: LBO and commented "high-quality deliverables; clear, didactic communication; strong proposals; proactive" and "serious while being relaxed in interactions, appreciable in the execution phase under pressure".
Sacramento
California Local Government Finance. Brandon focuses on California local government financing structures including general fund lease revenue bonds and certificates of participation; pension obligation bonds; tax and revenue anticipation notes; mello-roos bonds, assessment district bonds and other land secured financing structures; redevelopment financing; water and wastewater revenue bonds; airport revenue bonds; and public power revenue bonds.
Tax-Exempt Healthcare Finance. Brandon also focuses on tax-exempt healthcare finance for 501(c)(3) organizations. His experience includes financings for standalone hospitals, hospital systems and continuing care retirement communities. He has served as bond counsel or underwriters' counsel on tax-exempt healthcare financings in various states throughout the nation.
Düsseldorf
He focuses in particular on disputes in antitrust law. His work includes representing a client from the petrochemical industry in the enforcement of antitrust claims for damages against companies involved in cartels.
Already as a trainee lawyer at Orrick, he contributed to the successful action for annulment of an investment control prohibition decision before the Berlin Administrative Court.
Before becoming a lawyer, Leon Diederichs completed a stage at the German Federal Cartel Office and worked for several international law firms including Orrick.