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PARTNER MOVES - Leading environmental lawyer Jennifer Cornejo returns to Vinson & Elkins

18 Mar 2025

Cornejo’s practice focuses on complex environmental transactional matters, regulatory counseling, remedial issues, enforcement defense, and navigating the energy transition.

Vinson & Elkins announced that Jennifer Cornejo has returned to Vinson & Elkins as a Denver-based partner in the firm’s Environmental practice.

PARTNER MOVES - Simpson Thacher adds leading environmental partner

18 Mar 2025

Simpson Thacher & Bartlett LLP announced that Carleigh Rodriguez has joined the Firm’s Washington, D.C. office as Co-Head of the Environmental Practice.

“Environmental review is an important aspect of nearly all corporate deals and Carleigh’s addition will enable us to meet the growing demand from clients across our world-class transactional platform,” said Alden Millard, Chair of Simpson Thacher’s Executive Committee. “We’re excited to welcome her to the Firm.”

PARTNER MOVES - As tariffs and supply chain challenges dominate headlines, Pillsbury expands international trade practice with addition of three-partner, fourteen-member team

18 Mar 2025

In a move that significantly expands Pillsbury’s market-leading International Trade capabilities, the firm has recruited leading practitioners Daniel Porter, Matthew McCullough and James Durling as partners in Washington, DC. The Chambers- and Legal 500-ranked trio join from Curtis, Mallet-Prevost, Colt & Mosle LLP, and are bringing their entire 14-member team of trade lawyers and professionals with them.

PARTNER MOVES - Paul, Weiss adds leading life sciences partner in New York

18 Mar 2025

Paul, Weiss, Rifkind, Wharton & Garrison LLP announced that Jeffrey Osterman has joined the firm as chair of Life Sciences Licensing & Collaboration Transactions and an IP & Technology Transactions partner in the Corporate Department, resident in New York. Osterman brings significant experience in the life sciences sector, advising clients on transactions from drug discovery to commercialization, joint ventures and high-value acquisitions.

PARTNER MOVES - O’Melveny welcomes back experienced Brussels antitrust lawyer Stephane Frank

18 Mar 2025

O’Melveny announced that experienced antitrust lawyer Stéphane Frank has rejoined the firm’s Brussels office as a partner in the Antitrust and Competition Group. His arrival bolsters the team’s European capabilities and expands its worldwide roster of top-tier antitrust practitioners.

PARTNER MOVES - Former FCC official, DOJ national security supervisor, and federal prosecutor Loyaan Egal joins Morgan Lewis

18 Mar 2025

Morgan Lewis continues to build its deep bench of former senior US government lawyers by welcoming senior Federal Communications Commission (FCC) and Department of Justice (DOJ) official Loyaan Egal as partner in the firm’s telecommunications, media, and technology (TMT) practice.

PARTNER MOVES - Haynes Boone adds US EPA deputy regional counsel Clarissa Howley Mills as environmental Partner

18 Mar 2025

Haynes Boone is delighted to welcome Partner Clarissa Howley Mills to the firm’s Dallas office and Environmental Practice Group. Mills joins from the United States Environmental Protection Agency (EPA), where she spent the last nine years protecting the government’s interests in high-profile cases, most recently as Deputy Regional Counsel EPA Region 6. Her tenure at the EPA included leading enforcement efforts in environmental regulations across various sectors, from chemical safety and hazardous waste management to complex Superfund and Clean Water Act cases.