Matthew D. Slater is internationally recognized for his exceptional expertise in investment treaty arbitration and sovereign disputes. His decades-long track record representing states, state entities and multinational corporations in ICSID, ICC and UNCITRAL proceedings, combined with his profound public international law background, makes him particularly well suited for high-stakes, politically sensitive and strategically complex arbitrations. He brings legal precision, sovereign dispute insight and global arbitration leadership to every proceeding.
Senior Counsel at Cleary Gottlieb Steen & Hamilton LLP since 2021; joined in 1985 and became partner in 1992.
Former Principal Deputy General Counsel, U.S. Air Force (1995–1999), overseeing the department’s ADR program.
Lead counsel for Argentina in one of the largest ICSID sovereign bond disputes ever filed.
Represented the Government of Japan before ITLOS and UNCLOS tribunals.
Frequent speaker and chair at ICCA, GAR and HKIAC events.
