Green Ambassadors: United States 2026

Leah Malone


Simpson Thacher & Bartlett LLP

United States

Leah Malone

Leading the ESG and sustainability practice at Simpson Thacher & Bartlett LLP, Leah Malone is a particular expert on green transition matters within private equity fund formations and capital raises, capital markets transactions, and corporate governance.

A regular client is Blackstone, whom Malone advises on ESG due diligence matters within high-value private equity transactions.

Malone is a notable thought leader on green matters, contributing to the firm’s monthly Sustainability Regulatory Update and monthly U.S. State ESG Regulatory Tracker. Malone has also authored memos on ESG topics including California’s climate reporting requirements and the EU Omnibus package.