Elizabeth J. Jonas

Nicole is the leader of Sullivan's Investment Management Group and Chair of its Corporate Governance & Board Advisory Practice. Nicole also serves as Co-Chair of the firm's Lateral Partner Hiring Committee. Nicole’s practice focuses on the representation of boards and board committees, including independent directors, as well as a broad spectrum of financial services and other companies, such as investment companies (open-end, closed-end, BDCs and ETFs), investment advisers and brok...

Jonathan C. Drimmer is a partner in the firm's Washington, D.C., office, where he resolves anti-corruption, business and human rights and other complex cross-border challenges with the benefit of having sat in every chair at the table: senior legal officer for a global 500 company, federal prosecutor, and seasoned advocate. He is a frequent speaker, author, and commentator on issues related to anti-corruption and business and human rights, and represents and advises companies, individuals, mu...

Sean Howley brings first-hand construction industry experience to his legal practice, having managed and worked on multi-million dollar public works projects in New York City and the surrounding area. After earning a Bachelor of Science in Civil Engineering from the University of Notre Dame, he worked as a Project Engineer and Project Manager for a heavy construction contractor. He later earned his Juris Doctor from St. John’s University School of Law and has since devoted his practice ...

Timothy Shuman is a lawyer recognized by Best Lawyers in the practice area of Tax Law. Timothy practices law in Washington, District of Columbia Best Lawyers has recognized Timothy Shuman since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Timothy Shuman is held by other lawyers.

Gregory J. Rupert is a lawyer recognized by Best Lawyers in the practice area of Tax Law. Gregory J. practices law in McLean, Virginia Best Lawyers has recognized Gregory J. Rupert since 2023. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Gregory J. Rupert is held by other lawyers.

Steven L. Meltzer is a lawyer recognized by Best Lawyers in the practice areas of Mergers and Acquisitions Law and Securities / Capital Markets Law. Steven L. practices law in Tysons, Virginia Best Lawyers has recognized Steven L. Meltzer since 2006. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Steven L. Meltzer is held by other lawyers.

Heidi builds on her previous experience at the Office of Counsel to the Inspector General of the Department of Health and Human Services to assist clients with health care regulatory, compliance, and fraud and abuse matters. Heidi previously served as chief of the Administrative and Civil Remedies Branch in the Office of Counsel to the Inspector General (OCIG) at the Department Health and Human Services. Heidi served as the OCIG’s coordinator for both the Provider Self-Disclosure Protoc...

R. Peyton Mahaffey is a lawyer recognized by Best Lawyers in the practice areas of Litigation - Trusts and Estates and Personal Injury Litigation - Plaintiffs. R. Peyton practices law in Fairfax, Virginia Best Lawyers has recognized R. Peyton Mahaffey since 2011. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which R. Peyton Mahaffey is held by other lawyers.

Mary Ann Mancini's practice focuses on advising high net worth families and individuals who reside in the United States and internationally. Her clients include leaders of Fortune 100 companies and their families, as well as families whose wealth is more privately held and, in many cases, based on real estate ownership. Mary Ann counsels her clients on all matters that affect their estates, including the structuring and formation of entities, the creation of irrevocable “dynasty” ...

Christopher S. Rizek is a Member in Caplin & Drysdale's Washington, D.C., office. He also serves as General Counsel to the firm. In 2014, he was listed in the elite "Leading Lawyer" list for Tax Controversy by The Legal 500 . Services Mr. Rizek represents taxpayers in all types of federal civil and criminal tax controversy matters. He also guides clients through IRS audits, prepares administrative claims and protests of IRS actions, and litigates tax and tax-related cases in U.S. district...