Legal Committee Member Bios

Legal Committee Member Bios


Christof Swaak
STIBBE [Chair]

Christof is the head of the competition and regulation practice in New York and Amsterdam.

He is an expert in EU and Dutch competition law with a special focus on (multi-jurisdictional) cartel cases and follow-on damage litigation.

He acts as one of the few (and the only Dutch) non-governmental agent of the European  Commission during European Competition Network and International Competition Network meetings.

Christof teaches at various universities, including Rotterdam, Utrecht, Curacao (Dutch Antilles) and Fordham (New York).

Sascha Leske

Sascha Leske
Tax Advisor, Partner/Rechtsanwalt
NOERR LLP [Co-chair]

Sascha Leske is continuously advising key clients in major M&A transactions, private equity investments and reorganizations mainly in the field of new technology, media, telecommunication and internet.

As head of Noerr’s New York office he is a specialist for cross-border transactions and regularly takes the lead in multijurisdictional projects, coordinating advice in several jurisdictions.

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Ivan Delgado
Resident Partner

Iván joined Pérez-Llorca in 1999 and made partner in January 2007. Iván is is the resident partner at Pérez-Llorca’s New York office. In addition, he is responsible for the firm’s US Desk and LatAm Desk.

In 2002, Iván was seconded to the London office of Slaughter and May.
Iván graduated with a Degree in Law from Universidad Carlos III of Madrid in 1997 and a Master’s Degree in Law from Universidad Carlos III of Madrid in 1999. His working languages are Spanish and English.

Iván specialises in M&A, private equity and corporate and commercial matters in general. He advises national and international clients on prominent cross-border transactions in various sectors. Regarding private equity, he has advised on the acquisition of minority stakes, majority stakes and leveraged acquisitions in secondary buyouts and privatization.

Academic and Publishing Collaborations:
Iván has extensive teaching experience. He was a professor of Corporate Law at Universidad Carlos III in Madrid, at the ICAM and at the Master’s degree in Law at the Instituto de Empresa (IE) in Madrid. Currently, he is professor for the Master’s degree for Access to the Legal Profession at the Universidad Carlos III in Madrid.

Professional organizations: The Madrid Bar Association (ICAM) / American Bar Association (ABA) / New York State Bar Association (NYSBA) / Spain – US Chamber of Commerce / American Foreign Law Association (AFLA) / International Bar Association (IBA)

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Maria McElhinney
Finance Partner

Maria McElhinney is a Partner in A&L Goodbody’s Finance Department and is based in our New York office. Maria’s practice focuses on a broad range of banking law aspects including corporate and acquisition financing, asset financing (property and aircraft), loan acquisitions and disposals and general banking for both international and domestic clients. Maria has advised many of the world’s leading financial institutions, aircraft leasing organisations and private investors on transactions involving the financing, acquisition and securitisation of assets.


John Galiski
Director, New York

John is a Director based in the firm’s New York office. He has over 20 years of experience in guiding companies through the complexities of corporate investigations, financial forensics, interim management needs, purchase price disputes, and other complex financial and accounting issues.

In his role as a forensic investigator, John has extensive cross-border experience working with clients in countries throughout the Americas, Europe, and Asia. John’s diverse client base has consisted of Fortune 500 companies, private equity, middle market businesses, and high-wealth individuals.

John holds an MBA in accounting and international management from the State University of New York at Buffalo. He is a certified public accountant in New York State and a certified fraud examiner. He is a member of the American Institute of CPAs and the New York State Society of CPAs; he holds an AICPA Accredited in Business Valuation credential and a Certified in Financial Forensics credential. John is a Member of Board of Directors of Literacy, Inc.


Donald Liebman

Donald Liebman is a partner in the property tax law firm of Tuchman Korngold Weiss Liebman & Gelles LLP. Don is involved in every aspect of the property tax field, from strategic real estate tax planning to trial and appeal.

As a former Assistant Corporation Counsel in the New York City Law Department, Don litigated a wide variety of tax matters, successfully defending challenges to the policies and practice of New York City’s taxing authorities and other municipal agencies. Don has continued to try tax certiorari cases in the Supreme Courts of New York and has argued in the Appellate Division on real estate tax appeals.

Don has represented both institutional and real estate industry clients in every aspect of property taxation by successfully challenging valuations, obtaining tax exemptions for both new construction and redevelopment, and rendering opinions on the potential taxation of various projects. He has been involved in the negotiation, drafting, auditing and defense of lease tax escalation clauses for both landlords and tenants.

He has experience in the property tax aspects of Mitchell-Lama housing (including privatization), PILOT programs and IDA agreements, and has successfully negotiated the reversal of a multimillion-dollar shelter rent tax imposition on a major residential complex. Don also has advised upon and litigated property tax issues in federal bankruptcy and estate planning cases.

Don serves as Chairman of the Board of Assessment Review for the Town of Cortlandt Manor, Westchester County, New York. In this capacity, he has presided over and decided a number of tax valuation cases not ordinarily encountered in major cities, including the Indian Point Nuclear Power Plant. Don sits on the Boards of the International Property Tax Institute and the Society of Professional Assessors, is the Chairman of the Condemnation and Certiorari Committee of the NYC Bar Association, and is a Director of the Real Estate Tax Review Bar Association.


James Rosener
Managing Partner

James Rosener is a partner in the Commercial Department of Troutman Pepper LLP. Mr. Rosener heads the firm’s International Practice Group, is managing partner of the New York office and has served as a member of the firm’s Executive Committee. His practice is devoted primarily to international transactions, private equity, mergers and acquisitions and corporate financing.

Mr. Rosener has represented domestic and foreign private equity funds in transactions in over 70 countries throughout the world, including platform and follow-on acquisitions, distressed buyouts, including in bankruptcy, corporate carve-outs and restructurings. He also has represented U.S.-based companies in transactions throughout Europe, Latin America and Asia (particularly, India and China), as well as several European, Indian, South American and Japanese companies in merger and acquisitions, financing and licensing transactions involving the United States. In addition, he also has represented management-led groups in the acquisition of businesses from divesting corporations.

Within the corporate financing practice area, Mr. Rosener has represented domestic and foreign issuers, in public offerings (both U.S. and foreign listings), venture and mezzanine capital raising, and traditional bank financing transactions. In addition, he has represented a number of issuers and bondholder groups in debt restructuring, recapitalization and work-out plans. Mr. Rosener regularly acts as international legal counsel to issuers and underwriters on off-shore public offerings in India, the U.K. and Europe.

Mr. Rosener worked in the corporate finance field for nine years before becoming a lawyer. His experience in senior financial positions included the initial and subsequent public offerings of equity and debt securities of a major international integrated oil producer and a health care company, the acquisition of several publicly held companies and the financing of several stand-alone projects.


Diana Nehro

Diana Nehro, Partner with the International Practice Group of Ogletree Deakins, also serves as a chair of the firm’s Mergers and Acquisitions Practice Group. Ms. Nehro assists clients in efficiently and effectively managing international labor and employment issues in an ever-expanding global economy. She has experience in advising multinational clients in connection with the establishment and management of international workforces, including the preparation and enforcement of personnel policies and employment agreements, compensation and benefits, litigation avoidance and strategy, as well as general corporate matters germane to employers conducting business abroad.

In this role, Ms. Nehro – whose focus is on Latin America – is part of a growing team of international attorneys based in four countries with unique experience handling employment-law matters worldwide advising clients on all areas of managing a local workforce, including onboarding, employment agreements, statutory entitlements, variable compensation plans, employee handbooks, and codes of ethics and conduct, payroll tax and permanent establishment concerns, policies and procedures, incentive compensation plans and restrictive covenants and terminations, including severance benefits and independent contractor agreements, and labor-related merger and acquisition issues.


Piero Venturini

Piero Venturini’s practice focuses on mergers, acquisitions, divestitures, joint ventures and general corporate law. He advises Italian and foreign corporations as well as private equity firms on transactions in a variety of industries. He also advises banks in relation to the sale and purchase of bank branches and insurance companies in relation to the sale and purchase of insurance portfolios.

Piero Venturini was awarded with the 2013 Client Choice Award in the M&A category in Italy by International Law Office.


Aaron Warshaw

Aaron Warshaw is a founding attorney of Ogletree Deakins’s New York City office. Aaron’s first-chair experience includes representing Fortune 500 companies to small businesses in single-plaintiff and class-action employment cases. He has actively litigated and appeared in jurisdictions throughout New York State, including before federal courts, appellate courts, state courts, and administrative agencies. In addition, Aaron is a trusted advisor for management in navigating and complying with federal, New York State, and New York City employment laws.

Following law school, Aaron served as a judicial law clerk in the Eastern District of New York to the Honorable Ramon E. Reyes, Jr. and the Honorable Arlene R. Lindsay. Because of Aaron’s clerkship and litigation experience, he is adept at identifying efficient and creative litigation strategies.

Aaron has represented a broad range of clients, including in the retail, hospitality, healthcare, technology, and professional services fields. He has experience with a vast number of federal and New York employment matters, including: anti-discrimination laws such as Title VII, ADA, ADEA, Equal Pay Act, and New York State and City Human Rights Laws; wage and hour laws such as the FLSA and New York Labor Law; New York trade secret and restrictive covenant laws; state, federal, and local leave laws such as the FMLA, New York State Paid Family Leave Act, and New York City Sick and Safe Earned Time Act; Title III of the ADA; ERISA; employment contract and implied contract claims; whistleblower claims; WARN Acts; and defamation claims.

Aaron serves as co-chair of the Employment Disputes Committee of the International Institute for Conflict Prevention & Resolution (CPR). He also serves on the Brooklyn Law School Alumni Association Board of Directors. Since 2007, Aaron has been an active member of the Federal Bar Council Inn of Court.