Maria Kosmopoulou is an English-qualified associate in the London office of Gibson Dunn. She is a member of the firm’s Antitrust and Competition group.

Maria has broad experience in Competition advising clients in the private equity, pharmaceutical and telecommunications industries for merger control, regulatory investigations and compliance issues. 

Prior to joining Gibson Dunn, Maria was an Antitrust Paralegal at another large international law firm.

Maria graduated with a Master of Laws (LLM) from King’s College London. She is admitted to practice in England and Wales.

Abbey Barrera is a partner in the San Francisco office of Gibson Dunn. She practices in the firm’s Litigation Department, and is an active member of the firm’s Privacy, Cybersecurity, and Data Innovation Group, Technology Litigation Group, Class Actions Group, and Artificial Intelligence Group.

Abbey regularly represents multinational companies in a wide variety of complex litigation, including in data privacy, cybersecurity, and class action matters. She has significant experience representing clients in the technology, social media, and internet industries in particular. Abbey has experience with all phases of litigation, including significant trial experience, and is actively involved in the management of high-stakes litigation matters. She also has substantial experience representing clients in government investigations, and spent six months working as a secondee in the regulatory group of a top social networking company.

Abbey regularly consults with clients on privacy and tech-related risks, including in product development. This experience includes counseling on compliance with various privacy laws and regulations, such as the California Invasion of Privacy Act (CIPA), the Electronic Communications Privacy Act (ECPA), the California Consumer Privacy Act (CCPA), the Children’s Online Privacy Protection Act (COPPA), and other federal, state, and international laws and regulations. Additionally, she regularly advises companies with respect to their privacy policies and terms of service, and supports companies in the aftermath of large-scale data breaches. Abbey is a Certified Information Privacy Professional (CIPP/US) and sits on the Executive Committee of the Bar Association of San Francisco’s Cybersecurity and Privacy Law Section.

Abbey was recently named one of the “Top 40 Lawyers Under 40” by the Daily Journal.

Abbey also maintains an active pro bono practice, with a focus on immigration.

Abbey received her J.D. from New York University School of Law in 2014 where she was a member of the Journal of International Law and Politics. While in law school, she was the Chair of Law Students for Human Rights and participated in the Immigrant Rights Clinic and the Intellectual Property and Entertainment Law Society. Abbey earned her B.A. with High Honors in Community and Regional Development in 2008 from the University of California, Davis. Prior to joining the firm, she interned at the European Parliament in Brussels and Grameen Bank in Bangladesh.

Abbey is admitted to practice law in the State of California.

Rahim Moloo is a Chambers Band 1 ranked partner in the New York office of Gibson Dunn. He is co-chair of the firm’s International Arbitration Group, which won “International Arbitration Group of the Year” from Law360 three times in the last five years, and is ranked by Chambers as among “the Elite” in the USA. Rahim’s practice focuses on assisting clients to resolve their most complex disputes, and he regularly appears as lead counsel before tribunals and courts around the world.

He has been recognized by Who’s Who Legal as “one of the most skilled advocates of his generation” and a “Global Elite Thought Leader”. Earlier this year, he was awarded the Swiss Arbitration Association’s global prize for advocacy, awarded once every two years to one international arbitration globally in recognition of “their exceptional talents in advocacy.” He has twice been named an “MVP” in international arbitration by Law360 (most recently in 2024), is ranked as a “Leading Partner” in International Arbitration by The Legal 500 U.S. and The Legal 500 Latin America, and is ranked as a “Litigation Star” by Benchmark Litigation. Rahim has been recognized by The Best Lawyers in America for his work in International Arbitration. Chambers Global highlights Rahim’s standout qualities in international disputes, praising his “strong advocacy and strategy skills” and describing him as “a natural diplomat” with “the perfect demeanor.” He is recognized for his “excellent judgment,” “being a terrific lawyer who is really polished,” with “great intelligence,” as well as being “attentive to details and nuances.” Chambers USA echoes this acclaim, calling Rahim a “fantastic and great legal mind.” He is described as “accomplished and brilliant,” with the ability to “sift through a myriad of issues to focus on the salient one” and “navigate complex problems with ease.” His interpersonal strengths are also emphasized—his “people skills are exceptional” which allow him to connect effortlessly with both seasoned lawyers and nonlawyers, making him “very approachable” and someone who “brings everything down to my level so I can understand and contribute.”

Rahim’s experience spans a number of industries, including energy, mining, pharmaceuticals, telecommunications, maritime, financial services, infrastructure, construction, consumer products and entertainment. Many of the disputes on which Rahim advises involve claims brought in multiple jurisdictions where important strategic choices must be made about which forum will provide the best result with respect to different aspects of the dispute. And legal solutions often need to be considered in light of other avenues available, such as media campaigns and negotiations between business teams, to reach a favorable result. Rahim has experience in navigating these various options. His prior experience as General Counsel of a multinational organization in Central Asia helps him to see things from the perspective of management and in-house lawyers operating in difficult political and legal environments. Indeed, Rahim has advised on many disputes where a favorable result was achieved without having to commence formal dispute resolution, such as arbitration.

Concurrently, Rahim is a member of the adjunct faculty at Columbia Law School, where he teaches a course on International Arbitration. He has lectured at several other leading law schools and conferences around the world, and published several articles on international arbitration and litigation, international investment law, and public international law, many of which have been cited in international arbitration decisions, courts around the world and leading treatises. He recently co-authored a book on Procedural Law in International Investment Arbitration, published by Oxford University Press. The book has been dubbed by the Secretary General of ICSID as being a “go-to guide” for Investor-State Dispute Settlement.

Rahim serves on the Board of the International Center for Transitional Justice. He previously served on the Alumni UBC Board, as Vice-Chair of the IBA Arbitration Committee and on the Executive Council of the American Society of International Law (ASIL). He has also co-chaired ASIL’s Annual Conference.

Rahim has degrees from NYU School of Law, Queen’s University, and the University of British Columbia (UBC). In addition, he held fellowships at the Lauterpacht Center for International Law at the University of Cambridge and Columbia University. He was named NYU’s All-University Valedictorian for Professional and Graduate students and has received UBC’s Outstanding Young Alumnus Award. He is a former World Public Speaking Champion and National Debating Champion.

A representative sample of Rahim’s experience includes:*

Commercial Arbitration

  • Successfully representing a multinational mining company in an LCIA arbitration relating to a multi-billion dollar pricing dispute under a supply agreement.
  • Successfully defended a large EPC contractor in a multi-billion dollar CPR arbitration relating to the construction of a refinery. All claims brought against our client were rejected.
  • Successfully represented a multinational oil and gas company in an ICC arbitration relating to a dispute over the ownership of a refinery.
  • Successfully represented a large U.S.-based energy company in an ICC arbitration, including in a Pre-Arbitral Referee proceeding in relation to a multi-hundred million dollar dispute concerning the exercise of a put right.
  • Successfully represented a technology company in an HKIAC arbitration relating to the breach of a sale and purchase agreement against a state-owned enterprise resulting in a multi-hundred million dollar award.
  • Successfully represented a global drilling company in a $130 million ICDR arbitration relating to a dispute under a license agreement.
  • Successfully settled eight arbitrations in multiple jurisdictions on behalf of a multinational telecommunications company.
  • Successfully represented a telecommunications joint venture in an arbitration before the Lebanese Arbitration Centre relating to a fraud perpetrated by a Lebanese Bank and an Iraqi Telecom company.
  • Successfully defended a mining company in an ICC arbitration relating to alleged breaches of a Share Sale and Purchase Agreement.
  • Successfully defended an electronics company in a SIAC arbitration against a multi-hundred million dollar claim brought under a license agreement.
  • Represented an East African State in two commercial arbitrations (under the ICC Rules and the UNCITRAL Rules) arising out of a failed infrastructure project and a TV license dispute.
  • Representing a pharmaceutical company in an ICC arbitration relating to a dispute under a collaboration and joint development agreement.
  • Representing a gold mining company in an LCIA arbitration concerning the failure of a power supply company to supply power to a mine located in an African state in accordance with the terms of a PPA.
  • Representing an aluminum company in an SCC arbitration concerning the price to be paid under power purchase agreements.
  • Representing a global technology company in a SIAC arbitration concerning the termination of an agreement to acquire another technology company.
  • Representing a power plant operator in a dispute with its partner in an ICC arbitration concerning a wrongly terminated power project to rehabilitate a power plant in the Middle East.
  • Representing a multinational consumer goods company in an ICDR arbitration in relation to breaches of a license agreement.
  • Sitting as an arbitrator (Chair, Sole Arbitrator, and co-arbitrator) in international arbitrations in various contractual disputes.

Investor-State Arbitration

  • ConocoPhillips v. Venezuela: Successfully represented ConocoPhillips in the quantum phase of an ICSID arbitration related to the unlawful expropriation of its multi-billion-dollar investment in Venezuela resulting in an award of over $8.5 billion.
  • Corral Morocco Holdings A.B. v. Kingdom of Morocco: Successfully representing Corral Morocco in an ICSID arbitration regarding the unfair treatment suffered by its substantial investment in an oil refinery in Morocco resulting in an award of over $220 million (including interest).
  • Antin v. Spain: Successfully represented Antin in annulment proceedings relating to Spain’s application to annul its €101 million arbitration award.
  • Trans-Global Petroleum v. Kingdom of Jordan: Successfully defended the Kingdom of Jordan in an ICSID arbitration related to a concession for the exploration and extraction of oil and gas in the Dead Sea. The claimant withdrew all of its claims, as reflected in a consent award, shortly after the Kingdom of Jordan invoked ICSID’s summary dismissal procedure—the first-ever use of that procedure.
  • PIATCO v. Philippinesand Fraport v. Philippines: Successfully defended the government of the Philippines in parallel ICC and ICSID arbitrations related to the alleged termination of a concession contract and expropriation of an international airport terminal in Manila.
  • Saint-Gobain v. Venezuela: Successfully represented Saint-Gobain, a multinational polymer products producer, in an ICSID arbitration related to the expropriation of a proppants factory.
  • Sea Search Armada v. Colombia: Representing Sea Search Armada in a multi-billion dollar UNCITRAL arbitration under the U.S.-Colombia FTA concerning the expropriation of Sea Search Armada’s interest in the treasure it found on the San José Galleon—sunk in 1708—the largest treasure discovery in history.
  • CC/Devas et. al. v. India (II): Representing the Mauritian Shareholders in Devas in an investment treaty arbitration relating to India’s unfair treatment of the ICC Award rendered in Devas v. Antrix, currently valued at approximately $1.4 billion.
  • Gűriş Inşaat ve Műhendislik Anonim Şirketi v. Kingdom of Saudi Arabia: Defending the Kingdom of Saudi Arabia in ICSID arbitration brought under the Saudi Arabia-Turkey Bilateral Investment Treaty.
  • Primesouth v. Iraq: Representing Primesouth in investment treaty and contract arbitrations against Iraq in relation to the unlawful termination of Primesouth’s investment relating to the refurbishment and operation of the Al-Doura power plant in Iraq.
  • A subsidiary of Liberty Mutual v. Venezuela: Representing a subsidiary of Liberty Mutual in an investment treaty arbitration relating to Venezuela’s unfair treatment of its investment.
  • Coeur Mining v. Mexico: Representing Coeur Mining in a NAFTA dispute concerning Mexico’s unfair treatment of its investment in the Palmarejo mine in Mexico.
  • A subsidiary of Kimberly-Clark v. Venezuela: Representing Kimberly-Clark subsidiaries in an investment treaty arbitration relating to Venezuela’s unfair treatment of their investment.

Transnational and Arbitration-related Litigation

  • Successfully representing Crystallex International in litigation proceedings relating to the enforcement of its ICSID(AF) arbitration award against Venezuela of more than $1.4 billion.
  • Successfully represented an oil and gas company in its enforcement of an ICC arbitration award valued at over $600 million against an African State.
  • Successfully defended Enel S.P.A. in litigation in New York Supreme Court relating to the enforcement of an approximately $100 million claim under a parent guarantee concerning a renewable energy project in Mexico.
  • Representing Sociedad Concesionaria Metropolitana de Salud S.A. in the enforcement of its $139 million arbitration award against WeBuild.
  • Representing Perimetral Oriental de Bogota, S.A.S. in the enforcement of a multi-hundred million dollar arbitration award against Colombia and its Infrastructure Agency.
  • Representing a European investor in the enforcement of its ICSID award against a E.U. state.
  • Represented Plaintiff in claims under the Helms Burton Act in relation to the expropriation of its property in Cuba in the 1960s.
  • Multinational oil and gas majors: Advising several oil and gas companies on a variety of transnational disputes, including with respect to gas pricing matters and breaches of concession contracts. In most of these matters, favorable results were achieved prior to the commencement of arbitration or litigation.

Pro Bono and Community Service

  • Board of Directors, International Center for Transitional Justice.
  • Chair, His Highness the Aga Khan International Conciliation and Arbitration Board.
  • Former Executive Council member, American Society of International Law.
  • Former member of Board of Directors, University of British Columbia Alumni Board; prior Co-Chair, University of British Columbia Alumni Board of Advisors.
  • Advising one of the largest not-for-profit organizations in a potential investment treaty claim concerning the expropriation of its projects in an Asian country.
  • In Hugh Smith et al. v. the City of New York et. al., co-lead counsel for Plaintiffs in an action brought in the SDNY with respect to civil rights claims against the New York Department of Corrections.
  • Leading a team in advising a UNDP-sponsored project on the governance of transnational water bodies.
  • Advising a sub-state entity on the declaration of its maritime boundary.

*Includes matters handled by Rahim prior to joining Gibson Dunn.

Bryan Parr is of counsel in the Washington, D.C. office of Gibson Dunn and a member of the White Collar Defense and Investigations, Anti-Corruption & FCPA, and Litigation Practice Groups.

His practice focuses on white-collar defense and regulatory compliance matters around the world. Bryan has extensive expertise in government and corporate investigations, including those involving the Foreign Corrupt Practices Act (FCPA) and anticorruption. He has defended a range of companies and individuals in U.S. Department of Justice (DOJ), SEC, and CFTC enforcement actions, as well as in litigation in federal courts and in commercial arbitrations. In his FCPA practice, Bryan regularly guides companies on creating and implementing effective compliance programs, successfully navigating compliance monitorships, and conducting appropriate M&A-related FCPA diligence and integration.

He is recognized as a leading corporate crime and investigations lawyer by Chambers & Partners Latin America, Chambers Global, and Legal 500: Latin America for his significant activity and experience in Latin America. Bryan has also recently been recognized in the 2026 edition of Best Lawyers in the area of Criminal Defense: White Collar. He is proficient in Portuguese, French, and Spanish, and works professionally in all three languages.

Bryan represents and counsels clients in matters across a number of industries, including technology, life sciences, mining and extractive, petrochemical, and aerospace and defense industries.

Prior to joining the firm, he was a partner at a major international law firm. Bryan graduated from the University of Virginia School of Law in 2007, where he was an editorial board member of the Virginia Journal of International Law. He also graduated magna cum laude from Duke University with a B.A. in French and Comparative Area Studies in 2002.

Bryan is licensed to practice in the State of New York, the State of Massachusetts, and in the District of Columbia and is admitted to practice before various federal district and appellate courts.

Recent Representations:*

Investigations and White Collar Defense:

  • Represented the largest integrated power group in Brazil in an independent investigation of potential FCPA violations
  • Represented multiple South America-based multinational companies regarding enhancements to their anti-corruption compliance programs, interactions with independent compliance monitors, and related reporting required as part of DOJ and SEC FCPA resolutions
  • Conducted investigations of potential kickbacks, management misconduct, and FCPA violations for multiple South American companies
  • Led investigations of possible FCPA violations for major pharmaceutical company relating to operations in Brazil, Chile, Costa Rica and Central America
  • Represented an international medical device company in FCPA investigations before the DOJ FCPA Unit involving Mexico, Brazil, and various other countries
  • Represented a Brazilian company in investigation and defense of potential FCPA violations
  • Defended a Brazil-based aerospace and defense executive in DOJ, SEC, and corporate investigations of possible FCPA violations
  • Represented a major petroleum services company in investigations regarding potential management conflicts of interest and FCPA violations involving Mexican operations
  • Represented a Fortune 500 engineering, construction, and services company in investigations of potential FCPA violations involving operations in Algeria
  • Represented a diversified industrial company in various internal and US governmental investigations of possible FCPA violations in Europe and Asia
  • Conducted due diligence and internal investigations regarding India- and Latin America-based operations for a major petroleum company
  • Represented a major petroleum services company in investigations of management misconduct and potential FCPA violations involving operations in Kazakhstan
  • Represented a Fortune 500 retailer in an internal investigation of possible FCPA violations in Mexico
  • Defended a Brazil-based money manager in an SEC investigation
  • Defended a privately held energy company in a CFTC investigation

FCPA Risk Assessments, Diligence, and Counseling:

  • Advised a European transportation conglomerate in connection with post-acquisition compliance integration and due diligence
  • Advised U.S. aerospace and defense company regarding potential investments in Brazil, CIS, and Africa
  • Represented a leading sustainable infrastructure platform in its equity investment in the Brazil-based owner and operator of concessions in water, wastewater sanitation, highway and public lighting across Brazil
  • Represented multiple South America-based companies regarding enhancements to their anti-corruption compliance programs
  • Represented multiple multinational pharmaceutical companies in various anti-bribery and anti-corruption due diligence and integration efforts, following multi-billion-dollar JV formations and M&A transactions
  • Conducted risk assessment on Argentinian operations of a Fortune 100 food and beverage company
  • Conducted a global fraud and anti-corruption risk assessment of a newly acquired subsidiary operating in over 70 countries for a multinational telecommunications and technology company, with particular focus in Latin America
  • Conducted risk assessments and acquisition due diligence on possible corporate targets in the Middle East and Latin America for a Fortune 500 company
  • Counseled a Fortune 500 company on its regulatory and FCPA compliance program, policies, and procedures

Litigation and Arbitration:

  • Represented a Brazilian mining company in resolving U.S. commercial disputes relating to criminal proceedings in Brazil
  • Defended a mining company in federal litigation of claims under the Alien Tort Statute and Torture Victims Protection Act arising from operations in Colombia
  • Represented a construction firm in an expert determination arising from construction and engineering contracts relating to West African mining concessions
  • Represented a media company in federal litigation of securities fraud and breach of contract claims

Accolades and Recognitions:

  • Ranked Band 3 for Latin America – Corporate Crime & Investigation – International Counsel, Chambers Latin America (2023-2025) and Chambers Global (2023-2025)
  • Recognized by The Legal 500 Latin America: International Law Firms – Compliance and Investigations (2021)
  • Recognized as a “Rising Star” by the Washington, D.C. Super Lawyers magazine (2014-2018)

 

*Includes matters handled prior to joining Gibson Dunn.

Julia Tabat is an associate in the Dallas office of Gibson, Dunn, & Crutcher. She practices in the firm’s Litigation and Intellectual Property practice groups, and focuses on patent and appellate litigation.

Julia has represented clients in patent litigation matters before U.S. district courts, the International Trade Commission, and the U.S. Court of Appeals for the Federal Circuit.  She has experience across a variety of industries, including medical devices, telecommunications, pharmaceuticals, and automotives. Julia has conducted witness examinations, argued jury instructions, and taken and defended depositions. She has also drafted case dispositive motions and appellate briefs, coordinated discovery, and worked with fact and expert witnesses. 

Julia received her B.S. from the University of Wisconsin-Madison in 2017, and earned her J.D. with high honors from the University of Chicago Law School in 2020. Following law school, Julia clerked for the Honorable Richard G. Taranto on the U.S. Court of Appeals for the Federal Circuit, and then practiced at a law firm in Chicago.

Julia is admitted to practice law in the State of Texas, the State of Illinois, and before the U.S. Court of Appeals for the Federal Circuit, the U.S. District Court for the Northern District of Illinois, the U.S. District Court for the Western District of Michigan, and the U.S. District Court for the Eastern District of Texas.

Saad Khan is an English-qualified associate in the London office of Gibson Dunn and a member of the firm’s Financial  Regulatory Practice Group.

Saad has experience advising a broad range of financial institutions in the UK, including investment managers, private fund managers, FinTechs and digital asset service providers on complex regulatory issues.

Saad completed his bachelor’s degree in geography at the University of Oxford in 2020 before completing his Graduate Diploma of Law and Legal Practice Course at BPP Law School in London.

Ben Betner is a Chambers-ranked trial lawyer with a broad commercial litigation practice, representing clients in high-stakes, complex business disputes. He has appeared in state and federal courts across the country and has handled matters spanning energy, technology, privacy, and financial services for both Plaintiffs and Defendants. Ben also has deep experience in Texas courts and has represented clients before many of the world’s leading international arbitral institutions.

Clients quoted in Chambers USA describe him as a “smart litigator.” He has also been named to the Texas Rising Stars list by Super Lawyers, the 2025 Lawdragon 500 X – The Next Generation, and named AmLaw’s “Litigator of the Week” after a twelve-day jury trial in Phoenix that led to a $296 million verdict.

Representative Matters

  • Gray Development and Gray Services v. ZOM Holdings Inc. Trial counsel in a twelve-day jury trial in Phoenix, winning a $296 million verdict for Arizona developers Gray Development and Gray Services. The case involved ZOM’s misuse of Gray’s proprietary development plans and breach of non-circumvention and non-disclosure agreements. Recognized by the American Lawyer as “Litigator of the Week.”
  • Energy Transfer LP & Dakota Access LLC v. Greenpeace – Trial counsel in a landmark defamation and trespass case resulting in a $667 million jury verdict, the largest in North Dakota history. The American Lawyer recognized the team with its “Litigator of the Week” honors.
  • United States Automobile Association – Representing USAA in a putative class action involving breach of contract and consumer fraud claims concerning insurance practices across multiple states.
  • Meta Platforms, Inc. – Represented Meta in several matters related to privacy, biometrics, and Section 230 of the Communications Decency Act.

Before practicing law, Ben served in the US Army and worked in Military Intelligence. He deployed several times with the U.S. Army Special Operations Command to Afghanistan and Iraq.

He is a Life Fellow of the Texas Bar Foundation and a member of the Houston Bar Association. He also maintains an active pro bono practice, representing veterans before Military Review Boards on discharge upgrades and disability-related claims.

Ben earned his J.D. with honors from the University of Texas School of Law, where he was a Brumley Fellow in National Security Law and served as Deputy Managing Editor of the Texas Review of Law and Politics. He holds a B.A., magna cum laude, from Baylor University.

Catie Sakurai is an associate in the Palo Alto office of Gibson, Dunn & Crutcher. She practices in the firm’s Finance and Royalty Finance Practice Groups.

Catie earned her Juris Doctor from UC Berkeley School of Law in 2023. In addition to serving as an Associate Editor of the California Law Review, Catie was a law student clinician with the Samuelson Law, Technology & Public Policy Clinic.

Prior to law school, Catie earned a Bachelor of Science in Physiology & Neuroscience from the University of California, San Diego.

Catie is admitted to practice law in the State of California.

Gillian B. Miller is an associate in the San Francisco office of Gibson Dunn, where she practices in the firm’s Litigation Department. She previously served as a law clerk to the Honorable Jacqueline H. Nguyen of the U.S. Court of Appeals for the Ninth Circuit, and the Honorable Leonie M. Brinkema of the U.S. District Court for the Eastern District of Virginia in Alexandria, Virginia.

Gillian received her Juris Doctor from the University of California, Berkeley, School of Law, where she was elected to the Order of the Coif. While in law school, she served as a Supervising Editor of the California Law Review, a student advisor for the Appellate Advocacy class, and a board member of Women of Berkeley Law.

Gillian earned a B.A. in International Relations, magna cum laude, from the University of Southern California, where she was elected to Phi Beta Kappa. Prior to law school, Gillian worked for the Council on Foreign Relations in New York.

Gillian is admitted to practice law in the State of California and before the United States Court of Appeals for the Ninth Circuit.

Ingrid V. Cherry is an associate attorney in the New York office of Gibson Dunn. She practices in the firm’s Litigation Department.

Ingrid earned her Juris Doctor from Columbia Law School in 2024, where she was a James Kent Scholar and Harlan Fisk Stone Scholar. While at Columbia, Ingrid served as the Student Director of the Foundation Moot Court program and externed at Volunteer Lawyers for the Arts.

She received a Bachelor of Science in Journalism, cum laude, from Northwestern University in 2018.

Ingrid is admitted to practice in the State of New York.

Alexander Merritt is an associate in the Washington, D.C. office of Gibson Dunn. He practices in the firm’s Litigation Department and is a member of the Antitrust and Competition Practice Group. His practice spans a wide range of litigation and antitrust counseling. Alexander advises clients on antitrust issues arising from mergers and acquisitions across a range of industries. He also represents clients in antitrust litigation and before government agencies and regulators.

Prior to joining the firm, Alexander was an associate at a large international firm focusing on antitrust matters. Before that, he was an associate at a law firm in Washington, D.C., focusing on commercial litigation.

Alexander received his law degree magna cum laude from the Georgetown University Law Center 2016 and his B.A. in Political Science and History from Davidson College in 2011. While in law school he served as a judicial intern for the Honorable Victor Wolski on the U.S. Court of Federal Claims. Prior to attending law school, Alexander worked for a member of congress and in the lobbying group of an international law firm.

He is admitted to practice in Maryland and the District of Columbia.

Brian McCarty is an associate in the Washington, D.C. office of Gibson Dunn, where he practices in the firm’s Litigation Department. He is a member of the firm’s Appellate & Constitutional Law and Administrative Law & Regulatory Practice Groups.

Brian clerked for Judge Diane S. Sykes of the U.S. Court of Appeals for the Seventh Circuit. He earned his law degree in 2019 from Yale Law School, where he was senior editor on the Yale Journal on Regulation and Executive Vice President of the Yale Federalist Society. Brian graduated summa cum laude from the University of Connecticut with degrees in Political Science and Economics.

He is admitted to practice law in the District of Columbia and before the U.S. Court of Appeals for the Seventh Circuit.

Alexa Barrett is an associate in Gibson, Dunn & Crutcher’s Los Angeles office and a member of the firm’s White Collar Defense & Investigations and Litigation practice groups. She represents public and private companies, financial institutions, audit committees, boards of directors, and senior executives in sensitive internal and government investigations; DOJ and SEC enforcement actions; white-collar defense matters; and complex civil litigation. She also advises on corporate governance and regulatory compliance. In addition, Alexa maintains a robust pro bono practice focused on civil rights and immigration.

Before joining Gibson Dunn, Alexa served as a law clerk to the Honorable David O. Carter of the U.S. District Court for the Central District of California (2020-2021) and practiced at Cravath, Swaine & Moore LLP as an associate in its Investigations & Regulatory Enforcement and Litigation groups (2021-2024).

Alexa earned her J.D. from the University of California, Berkeley, School of Law in 2020, where she served on the Berkeley Business Law Journal and was a member of the Berkeley Law Trial Team.  She graduated cum laude from Duke University in 2015 with a Bachelor of Arts in International Comparative Studies with certificates in Information Science & Studies and Film, and High Distinction for her honors thesis on the use of DNA to prevent trafficking of children at the border.

She is a member of the Arizona, California and New York bars.

Sandy Bhogal is a partner in the London office and serves as Co-Chair of Gibson Dunn’s Tax Practice. He regularly advises multinational companies, asset managers and fund sponsors, investment banks, insurers, REITs and institutional investors (including sovereign wealth funds) on their most complex tax issues.

Sandy’s experience ranges from general corporate and indirect tax advice to transactional advice on matters involving M&A, corporate finance & capital markets, investment funds, structured and asset finance, insurance and real estate. He also has significant experience with corporate tax planning and transfer pricing, and often provides clients with advice on domestic and cross border tax efficient structures. He also assists clients with tax authority enquiries, wider tax risk management and multi-lateral tax controversies.

His recent transaction experience includes advising:

  • Elliott Investment Management L.P. and its affiliate, Evergreen Coast Capital Corporation, on the $16 billion acquisition of Nielsen Holdings plc.
  • Special Committee of the Board of Atlas Corporation, a leading global asset management company, on Poseidon Acquisition Corp.’s acquisition of Atlas for approximately $10.9 billion.
  • KKR on its investment in Northumbrian Water, a water company in the UK providing mains water and sewerage services, from CKI.
  • Veritas Capital on its $3.1 billion acquisition of Verisk’s energy business, Wood Mackenzie, a provider of data, analytics, and insights to the energy, renewables, and natural resources industry.
  • Related Argent on a joint venture with Invesco Real Estate in relation to the first major phase of an £8 billion development at Brent Cross Town, a new town in North London.

Sandy is listed as a leading tax adviser in Chambers (Band 1) and The Legal 500 (Hall of Fame). He is also listed in the World Tax Leaders Guides, as a Global Elite Thought Leader in Corporate Tax in the Lexology Index, and by the Best Lawyers in the United Kingdom as a leading lawyer for Tax.

He serves as the co-chair of the tax committee of the Law Society of England & Wales. He is also a member of the IFA UK branch, IBA Global and AIMA tax committees. He is also chairman of TheCityUK tax group, a private-sector membership body and industry advocacy group promoting the financial and related professional services industry of the UK.

Sandy graduated with an Bachelor of Laws and Master of Laws (both with honours) from Bristol University.

Michael Naclerio is an associate in the New York office of Gibson Dunn and a member of the firm’s Mergers and Acquisitions and Private Equity Practice Groups.

Michael regularly represents clients in mergers and acquisitions, divestitures, joint ventures, growth equity and venture capital investments, and other significant transactional matters.

Michael received his Juris Doctor from Columbia Law School in 2017, where he was recognized as a James Kent Scholar, earned the Ruth Bader Ginsburg Prize, and served as a Notes Editor of the Columbia Law Review. He graduated from Duke University with a Bachelor of Arts in Public Policy Studies.

Michael is admitted to practice in the State of New York.

Tina Asgharian is a New York qualified associate in the London office of Gibson Dunn and a member of the firm’s Antitrust and Competition Practice Group. 

Tina advises clients on a wide range of antitrust issues, including merger control, regulatory investigations, and compliance issues. 

Tina received a Master of Laws (LLM) from Harvard University in 2022 and a Master of Laws (LLM) from Lund University in 2020.

Prior to joining Gibson Dunn, Tina practiced in the competition law department of a leading international law firm in the U.S.

Chris Haynes is a corporate partner in the London office of Gibson Dunn.

Chris has extensive experience in equity capital markets transactions and mergers and acquisitions including advising corporates, investment banks and shareholders on initial public offerings (including multi-track processes), rights issues and other equity offerings as well as on public takeovers, private company M&A and joint ventures. He also advises on corporate and securities law and regulation.

Chris is recognised as a leading lawyer by Chambers, Legal 500, IFLR 1000 and Best Lawyers. In Legal 500 2026 he is described by clients as being a “stand out partner”, “always available, top of his game and a truly trusted adviser” and an “expert in his field”, and the team is praised for being “very responsive, helpful and knowledgeable”. In Chambers 2026 clients note that he is “well respected across the banks and corporates”, “highly commercial” and “always coming up with … practical solutions”.  In prior editions he has been described as “extremely knowledgeable and pragmatic”, “creative when the situation calls for it”, “hugely capable in all corporate and transactional matters”, “extremely user-friendly”, “a pleasure to work with” and “extremely strong when situations are stressful”.

Chris practiced with Herbert Smith Freehills LLP from 1998 to 2016 and became partner in that firm in 2002. Prior to that he was a solicitor with Bell Gully in New Zealand.

Selected experience includes*:

  • AO World  –  public takeover of musicMagpie plc, by way of a scheme of arrangement
  • Trustpilot Group – £1 billion London listing and IPO (for the company)
  • THG – £5.4 billion London listing and IPO (for the banks), and on its subsequent placing, subscription and retail offer (for the banks)
  • Network International – £2.2 billion London listing and IPO (for its parent company, Emirates NBD Bank)
  • THG – various matters including its $350 million acquisition of Dermstore.com, $255 million acquisition of Bentley Laboratories and pre-IPO equity issuances to BlackRock, Merian and Sofina (for the company)
  • Sophos Group – placings of shares by Dr. Peter Lammer and Dr. Jan Hruska raising $582 million, in connection with the takeover offer by Thoma Bravo (for the selling shareholders)
  • CMR Surgical – $240 million series C financing (for the banks)
  • AO World – £1.2 billion London listing and IPO, on its subsequent placing and on its class 1 acquisition of Mobile Phones Direct (for the company)
  • Hostelworld – £176 million IPO and London and Irish listings and on its subsequent placing (for the banks)
  • The Weir Group – £363 million placing in connection with the acquisition of ESCO Corporation (for the banks)
  • J2 Acquisition – $1.12 billion London listing and IPO (for the banks)
  • Ocelot – $425 million London listing and IPO (for the banks)
  • Photobox Group – sale by way of auction to Exponent and Electra (for the company)
  • Permanent TSB – €400 million capital raising and London and Irish listings (for the banks)
  • Trainline – proposed IPO (sold to KKR pursuant to a M&A track) (for the banks)
  • Sky – £1.36 billion placing in connection with the acquisition of Sky Deutschland and Sky Italia (for the company)
  • Zoopla – £918 million London listing and IPO (for the banks)
  • Just Eat – £1.47 billion High Growth Segment London listing and IPO and on the step up to a London premium listing (for the company)
  • National Grid – £3.3 billion rights issue (for the banks)
  • MoneySupermarket.com – £840 million London listing and IPO and £87 million acquisition of MoneySavingExpert (for the company)

*Includes matters prior to joining Gibson Dunn

Jason Zachary Goldstein is a partner in the New York office of Gibson Dunn and a member of the firm’s Business Restructuring and Reorganization and Liability Management and Special Situations Practice Groups.

Jason represents ad hoc lender and noteholder groups, strategic investors, asset managers, hedge funds, private equity funds, and companies across a host of in court and out of court transactions. Jason has extensive experience structuring and implementing liability management transactions, recapitalization transactions, distressed exchanges, amend-and-extend transactions, and various in court financings. In addition to structuring and implementing these complex transactions, Jason advises on litigation strategy with respect to liability management transactions.

Representative Clients and Transactions:

  • Term Lender and Noteholder Groups: Zayo, Astound, WeightWatchers, Wellful, Wellness Pet, Global Medical Response, Radiology Partners, Xplore, Beasley Broadcast Group, Invited (ClubCorp), West Technology (Intrado), Vyaire Medical, National CineMedia, Phoenix Services, Alvogen Pharmaceuticals, Dhanani Group, Anuvu (Global Eagle), and Alliance Healthcare
  • Liability Management Transactions: Serta Simmons, STG, Del Monte Foods, AMC Entertainment, Robertshaw, Envision Healthcare, Elara Caring (Jordan Health), and Diamond Sports Group
  • Acquisitions and Equitization Transactions: Rugs USA, Aimbridge Hospitality, Southern Graphics, IPC, Central Security Group (Alert 360), and Aegerion Pharmaceuticals
  • Company Representations: Wonder Group, Grubhub, Sequential Brands Group, IntegraMed America, KidKraft, Brookstone, SH130 Concession Company, and The Sports Authority

Jason graduated in 2012 from the University of Virginia School of Law. During law school, he interned at the United States Department of Justice in the Office of the United States Trustee. Jason received a Bachelor of Arts degree, with distinction, in Foreign Affairs from the University of Virginia in 2009.

Jason is admitted to practice in the State of New York, before the United States District Court for the Southern District of New York, and before the United States Court of Appeals for the Fifth Circuit.

 Publications:

  • Author, Note, Autonomy in Information: Pre-Trial Publicity, Commercial Media, and User Generated Content, 21:2 INFO. & COMM. TECH. L. 155 (2012).
  • Author, Note, Take the Money Line: PASPA, Bureaucratic Politics, and the Integrity of the Game, 11 VA. SPORTS & ENT. L.J. 362 (2012).

Ceyda Knoebel is an English-Turkish dual-qualified solicitor and Of Counsel in the London office of Gibson, Dunn & Crutcher. She is a member of the firm’s Geopolitical Strategy and International Law, International Arbitration, Judgment and Award Enforcement Groups.

Ceyda specialises on public international law and international arbitration, advising clients on a wide range of cross-border and complex disputes in common and civil law jurisdictions. She has extensive experience in investment treaty and commercial arbitration proceedings as well as enforcement of arbitral awards in multiple jurisdictions. Ceyda represents and advises clients across a broad spectrum of industries including energy, mining, oil and gas, financial services and construction and she appears as counsel and advocate in commercial and investor-state disputes. She is also appointed to the United Nations Global Arbitration Counsel List.

Ceyda advises clients on a broad range of public international law matters, including international human rights law, offering strategic guidance across diverse issues on international dispute resolution and geopolitical risk management.

She teaches international investment arbitration at King’s College, London and writes on legal issues for a wide range of publications. Ceyda Knoebel is ranked as a Leading Lawyer by The Legal 500 UK for International Arbitration and is also recognised for her expertise in Public International Law. Clients describe her as “one of the best people around to work with, combining in-depth understanding and experience in international arbitration and public international law with superlative case management skills.” She is highly recommended for her “in-depth understanding and experience of international arbitration” and considered an “expert in public international law.” One client shared, “I have worked with Ceyda Knoebel for many years, primarily in investment treaty arbitration. She is one of the best people I have ever worked with. Ceyda makes difficult cases that much easier,” while another noted, “Ceyda Knoebel is excellent and very responsive and efficient.”

In previous years, clients have noted she is “one of the best solicitors around for public international law” and “Ceyda Knoebel is excellent. She works across international commercial arbitration, investment treaty arbitration and public international law with ease, combining huge knowledge and interest in the law with the ability to run a team and complex litigation – truly a pleasure to work with.” She is also recognised by Best Lawyers in the United Kingdom as a leading lawyer for International Arbitration .

Prior to joining Gibson Dunn, Ceyda trained and practised in the London office of a magic circle law firm where she spent six months seconded to a major financial institution as well as practising in the Ankara office of a major US law firm.

She holds an LL.M degree from University of Cambridge (2008) and was also admitted to the Bar in Turkey in 2007. In addition to her native Turkish, Ceyda speaks German.

Gregory V. Momjian is a litigation associate in the New York office of Gibson Dunn. He returned to the firm in 2025 after serving as a law clerk to the Honorable Renée Marie Bumb, Chief Judge of the United States District Court for the District of New Jersey. Gregory received his Juris Doctor in 2022 from the University of Michigan Law School where he was an Executive Editor for the Michigan Journal of International Law and a quarterfinalist in the Henry M. Campbell Moot Court Competition. He received his Bachelor of Arts, cum laude, from Columbia University in 2017.

Gregory is admitted to practice in the State of New York and the United States District Courts for the Southern and Eastern Districts of New York as well as the State of New Jersey and the United States District Court for the District of New Jersey.

Recent Publications:

Co-Author, Coming Soon to Court: General Personal Jurisdiction of All Out-of-State Businesses in NY, New York Law Journal (July 4, 2023).