Mayer Brown adds new partners

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 adds new partners

Brian Kittle, who works in New York, has experience of corporate tax cases such as substance-over-form disputes, economic substance issues, valuation issues, Subchapter C issues and leasing transactions. He also advises clients on administrative matters, including IRS audits and IRS appeals.

Andrew Steigleder becomes a partner in Chicago. He acts for taxpayers in federal tax matters at all phases of a controversy, including pre-audit strategic consulting, IRS audit and administrative appeals and litigation in the US Tax Court, US Court of Federal Claims and US district courts.

more across site & shared bottom lb ros

More from across our site

ITR sat down for a pre-event interview with Tim Zech, WTS Germany, and Jeff Soar, WTS UK, keynote speaker at next week’s ITR AI in Tax Forum 2026 in London
Brazil’s bid to seek US-style exemptions from pillar two is ‘highly advantageous’ for multinationals, ITR has also heard
India is signalling flexibility on expat taxation to attract foreign expertise, though employers will need to navigate disclosure, treaty and scope uncertainties
Brazil is trying to follow in the US’s footsteps and secure its own 'qualified side-by-side status', ITR understands
The surge in probes comes as the UK tax authority seeks to close a VAT gap of £11.4bn from last year, Pinsent Masons’ research has suggested
ITR’s survey data reveals widespread client disappointment with firms’ use of technology but our upcoming AI in Tax event offers advisers a chance to flip the script
Firms announced key tax partner hires across the US and UK, while fintech and software providers revealed board appointments and new tools for multinational tax teams
It continues a prolific spree of investment for the firm, after it launched in Indonesia, Thailand, Saudi Arabia and Japan in 2025
Booming APA statistics reflect the growing credibility of India’s TP framework and the country’s shift toward a tax certainty approach, ITR has heard
Partners at both firms have voted in favour of the tie-up, which marks ‘the largest law firm merger in history’
Gift this article