Kevin J. Lipson

Jamie's representations have involved the taxation of financial instruments, the timing of income and deductions, corporate reorganizations, deductions for worthless investments, the substance-over-form and economic substance doctrines, civil tax penalties, and other areas of tax law. From 2006 to 2013, Jamie was a trial attorney with the Tax Division of the U.S. Department of Justice, where he was lead counsel for the government in over 100 civil tax cases, and he received two Outstanding At...

Ivan Schlager is an international trade and national security partner in the Washington, D.C., office of Kirkland & Ellis LLP. Ivan provides counsel on structuring, negotiating and documenting transactions to address regulatory issues, including approval by the Committee on Foreign Investment in the United States (CFIUS). He represents a diverse group of clients ranging from defense companies, major telecommunications providers, and media and technology companies to private equity firms a...

Seth Perretta advises clients on a wide range of federal tax and ERISA matters regarding employee benefits and insurance. His practice encompasses qualified retirement plans, executive compensation, federal income and employment taxes, health and welfare arrangements, and insurance. Seth represents employers, private equity and investment firms, insurance companies, professional employer organizations (“PEOs”), trade associations, and public policy organizations on all aspects of ...

Alan S. Mark is a member of the firm’s Commercial Transactions , Financial Services , Real Estate , and Science & Technology Practice Groups. For the past 35 years, Mr. Mark has concentrated on corporate, commercial and real estate finance matters. He has served as outside counsel to numerous local, regional and national financial institutions, publicly traded biotechnology companies and hotel owners and operators. He has also served as outside counsel to information and telecommuni...

Eric J. Rollinger is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation and Controversy - Tax and Tax Law. Eric J., who practices law in Rockville, Maryland, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Eric J. is held by other top lawyers in the same geographic and legal practice area.

Caroline D. Ciraolo, former Acting Assistant Attorney General of the U.S. Department of Justice’s Tax Division, is a partner with Kostelanetz LLP and a founder of its Washington, D.C. office. Her practice focuses on federal and state civil tax controversies, including representation in sensitive audits, administrative appeals, and litigation, providing related tax advice, conducting internal investigations, and representing individuals and entities in criminal tax investigations and pro...

Michael Kreps is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law. Michael, who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael is held by other top lawyers in the same geographic and legal practice area.

Maria Simon is an award-winning attorney who serves as the firm’s Managing Partner. While Maria’s practice is quite versatile, she specializes in family law, divorce, custody disputes, Collaborative Divorce, business law, and litigation. Frequently appearing in court nationwide on behalf of her clients, Maria has considerable experience in the Federal District Court, U.S. Court of Appeals, Bankruptcy Court, and the State courts of Virginia, District of Columbia, and Maryland. She ...

Scott H. Segal is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law. Scott H., who practices law in Washington, District of Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Scott H. is held by other top lawyers in the same geographic and legal practice area.

T.J. Sullivan is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. T.J., who practices law in Washington, District of Columbia, has been recognized since 2007. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which T.J. is held by other top lawyers in the same geographic and legal practice area.