Green Ambassadors: United States 2026

Stuart Hammer


Debevoise & Plimpton LLP

United States

Stuart Hammer

Heading the environmental practice group at Debevoise & Plimpton LLP, Stuart Hammer brings longstanding expertise on the environmental aspects of private equity and corporate transactions.

A key client is Verizon Communications, whom Hammer advised on environmental due diligence and environmental provisions within its $20bn acquisition of pure-play fibre internet provider Frontier Communications Parent.

A key contact within the firm’s sustainability efforts, Hammer helms its internal Green Committee and helped develop its ESG resource centre. Hammer also helps spearhead the firm’s thought leadership efforts in the space, authoring articles and delivering briefings on topics including climate disclosures, ESG, and environmental policy.