Five Mayer Brown partners named 2026 BTI Client Service All-Stars
Five Mayer Brown lawyers have been recognized as 2026 BTI Client Service All-Stars, a distinction awarded exclusively based on feedback from corporate counsel and legal decision-makers.
The Mayer Brown partners recognized in the 2026 rankings are:
• Rajesh De, leader of the firm's Cybersecurity & Data Privacy and National Security practices, advises clients on cybersecurity incidents, data privacy matters, government investigations, and crisis management issues.
• Joe Pennell, co-leader of Mayer Brown's Technology & IP Transactions practice, advises clients on transformative technology, artificial intelligence, digital infrastructure, cloud, and outsourcing transactions.
• Michael Olsen, leader of Mayer Brown's Litigation & Dispute Resolution practice, is a nationally recognized trial lawyer who represents clients in significant mass tort, product liability, environmental, and complex commercial disputes.
• Marc Sperber, former global leader of Mayer Brown's Corporate & Securities group, is a seasoned transactional attorney and corporate advisor who counsels clients on mergers and acquisitions, joint ventures, and other complex domestic and international transactions across various industries, including the chemicals, industrial products, energy, food and beverage, and infrastructure sectors.
• Brantley Webb, co-leader of Mayer Brown's ERISA Litigation practice, represents leading companies in complex commercial disputes, ERISA class actions, fiduciary litigation, and trade secret matters.
The annual rankings are drawn from more than 350 in-depth, independent interviews with top legal decision-makers at some of the world's leading companies.
