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Hogan Lovells US LLP

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Siobhan Rausch

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Hogan Lovells US LLP

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Siobhan Rausch is the Global Co-head of the Hogan Lovells Tax practice. Siobhan practices primarily in the area of tax-exempt organizations. Her practice focuses on the formation and operation of a range of nonprofit entities, including charitable, educational and health-related organizations; private foundations; trade associations; and related nonprofit and for profit affiliates. Siobhan advises clients on matters relating to the qualification and retention of their tax exemption, mergers and strategic transactions, investments (including program-related investments), and unrelated business income tax. Siobhan has extensive experience handling audit and controversy matters involving tax-exempt organizations and obtaining favorable IRS private letter rulings and tax-exemption determinations. Siobhan represents a number of international nonprofits in the United States in respect to activities in other countries.


Prior to entering law school, Siobhan was a tax associate in the tax policy group of a major strategic consulting firm. Siobhan is a frequent speaker at conferences sponsored by the National Association of Colleges and University Attorneys and other national events.


Member, American Health Lawyers Association; Member, American Bar Association; Member, District of Columbia Bar Association


J.D., magna cum laude, The Catholic University of America, Columbus School of Law, 1997; B.A., summa cum laude, The Catholic University of America, Columbus School of Law, 1992

United States: Tax

International tax

Within: International tax

Hogan Lovells US LLP’s Christine Lane assisted glass manufacturer PPG Industries with the $755m carve-out of its entire flat glass business to Mexico City-based Vitro, a producer of flat glass and specialty products. New York’s Jeffrey Tolin acted for multinational Valeant Pharmaceuticals in the sale of its subsidiary Dendreon to privately owned Chinese conglomerate Sanpower Group. The client portfolio also includes Cisco Systems and 21st Century Fox. Siobhan Rausch in Silicon Valley and San Francisco-based Babak Nikravesh are other key partners. Attorneys mentioned are based in Washington DC except when otherwise indicated.

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US taxes: contentious

Within: US taxes: contentious

Hogan Lovells US LLP acts for domestic and international clients in tax audits and appeals before the IRS, as well as in mediation and litigation, focusing on transfer pricing disputes, restructurings and private letter rulings. The client portfolio includes Translational Research Institute, Rural Telephone Finance Corporation and Open Networking Foundation. Team head Siobhan Rausch, Todd Miller and Christine Lane, who are all based in Washington DC, are the names to note.

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US taxes: non-contentious

Within: US taxes: non-contentious

Hogan Lovells US LLP is especially strong in corporate, finance and public M&A tax work, as well as REIT and capital market taxation matters. Prentiss Feagles and Cameron Cosby advised Colony Capital as tax and Maryland counsel on its $17bn public merger with NorthStar Asset Management and NorthStar Realty Finance, while Mark Weinstein in New York advised The Anschutz Corporation on the $3.6bn sale of Regal Entertainment to Cineworld. Jasper Howard, who joined from Linklaters LLP in February 2017, acted as tax counsel to KSL Capital Partners and affiliates of Aspen Skiing Company concerning their acquisitions of Intrawest Resorts and Mammoth Resorts. The client roster further includes United Healthcare, Marvell Technology Group and Orbital ATK. Siobhan Rausch heads the team, which also includes Scott Lilienthal and Todd Miller. Named attorneys are based in Washington DC except where otherwise indicated.

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Legal Developments by:
Hogan Lovells US LLP

  • Hong Kong Enacts Competition Law

    After years of debate, on 14 June 2012 and in its last days of office, the Legislative Council finally enacted Hong Kong’s first cross- sector competition law.
    - Hogan Lovells

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