Diana Wollman joins Cleary Gottlieb in New York

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Diana Wollman joins Cleary Gottlieb in New York

wollman.jpg

Cleary Gottlieb Steen & Hamilton has hired Diana Wollman, the former director of international strategy for the Internal Revenue Service ’s Large Business & International Division (LB&I), as a tax partner in the New York office.

She will advise clients on a broad range of federal and state tax issues, particularly tax controversy.


Wollman was responsible for developing and managing the international strategic programme for LB&I, the IRS division that audits multinational companies and individuals with international income, which she joined in September 2013. She focused on improving how the IRS audits international businesses and manages and uses its institutional knowledge and data. She also represented the IRS in OECD working groups, including some of the working groups on BEPS (Base Erosion and Profit Shifting), the Forum on Harmful Tax Practices, and the Forum on Tax Administration. She was one of a string of senior international tax figures to leave the IRS in 2014.


Before the IRS, Wollman was a partner of Sullivan & Cromwell in New York, where her practice covered federal and New York State tax controversies, complex cross-border transactions, fund and private equity work, and bankruptcy.

more across site & shared bottom lb ros

More from across our site

New research, which suggests LLMs can silently corrupt complex documents, should alert tax and legal teams relying on AI to handle iterative drafting and compliance workflows
Maintaining increased funding for HMRC is a ‘high possibility’ if he becomes PM, ITR has also heard
Awards
ITR is delighted to reveal all the shortlisted nominees for the 2026 Europe Tax Awards
The firm has hired a team of private client lawyers from Withers to launch in New York and Connecticut, though ITR analysis suggests it faces stiff competition
The ability of tax authorities to receive and analyse data is becoming ‘quite advanced’, warns Stuart Lang, head of EY’s compliance co-sourcing solution
The Court of Appeal ruling clarifies that treaty benefits are not abusive where transactions are commercially driven, providing greater certainty on “main purpose” anti-avoidance tests
Despite the Netherlands featuring an unusual concentration of World Tax-ranked technology-led providers, sources believe there’s a long way to go to challenge the established players
Ethics seems to be playing a subservient role to an entitlement culture borne out of a pervasive ‘revenue at all costs’ mentality at the big four
Historical World Tax data suggests the ‘largest law firm merger in history’ may not pose a serious threat to the world's leading tax practices
The repeal of Libya’s statute of limitations and tougher enforcement leave taxpayers navigating a high-stakes choice between conciliation and litigation
Gift this article