Mayer Brown bulks up partnership

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

Mayer Brown bulks up partnership

International firm Mayer Brown has announced its latest round of partnership promotions.

This intake represents the firm’s biggest partnership expansion since 2012, with 27 lawyers being promoted. Four tax lawyers have made the step up; two from the tax controversy practice and two from the tax transactions and consulting practice. The promotions will take effect from January 2016.

John Cise and Jonathan Hunt are the tax controversy lawyers being promoted. Both men are based in the firm’s Chicago office.

Since joining the firm in 2008, Cise’s practice has focused on tax disputes and transfer pricing matters. He has represented taxpayers at all levels of federal tax controversy.

Hunt specialises in tax litigation relating to transfer pricing matters, including audit, administrative appeals, and cross-border transfer pricing of tangible and intangible property.

Steven Garden and Charles-Albert Helleputte will become partners in the tax transactions and consulting practice. Garden is also based in Chicago, while Helleputte works out of the Brussels office.  

Garden advises on M&A tax issues, disposition of businesses and international tax planning, with a focus on international corporate structuring, offshore insurance, and cross-border transactions.

Helleputte joined Mayer Brown in 2007 as counsel and focuses his practice on the corporate and tax aspects of restructuring transactions and structured finance. With experience in tax litigation, indirect taxes and tax policy. 

more across site & shared bottom lb ros

More from across our site

CSR initiatives can sometimes venture into virtue signalling, but Ryan’s tax literacy event for schoolchildren was a genuine and necessary endeavour
Grant Thornton advanced plans to integrate its Australian firm into its US arm, as tax developments spanned law firm hires, aviation levies and digital services taxes
A new focus on early intervention and increased AI use is transforming how tax authorities are approaching TP audits, though capacity-constrained jurisdictions risk falling behind
The French administration has used AI to detect undeclared swimming pools and verandas but always includes a human in the loop, the AI in Tax Forum heard
The UK tax authority’s deputy director of large business also reassured taxpayers that HMRC will not ‘nitpick’ returns
Sucafina’s tax chief was speaking at the ITR Pillar 2 Forum in London alongside experts from HMRC and other organisations
India’s Supreme Court rattled cross‑border structuring with its Tiger Global ruling. Subsequent rule changes narrowed the impact, but significant risks around GAAR, substance and treaty access persist
The UK-based big four spin-off firm has hired Marc Lien, who declared that most AI in professional services today is ‘cosmetic’
Projected revenue losses and exemption requests are harming the project’s capability and viability
HMRC secured lengthy prison sentences in a major payroll VAT fraud case, while law firms announced tax promotions and hires
Gift this article