A&O Shearman announced that Kathryn Mims has joined the firm as a partner in its U.S. Antitrust practice, further expanding its capabilities in complex competition law matters.
Mims brings significant experience in antitrust litigation and regulatory counseling, with a focus on high-stakes matters across sectors including life sciences, energy, chemicals, and technology. Her practice combines trial experience with deep industry knowledge, positioning her to advise clients navigating increasingly complex regulatory environments and heightened enforcement activity.
Her addition strenghens A&O Shearman’s ability to support clients facing “bet-the-company” antitrust challenges, particularly as scrutiny intensifies across multiple industries in the United States and globally.
Mims joins the firm from White & Case LLP and will be based in Washington, D.C., a key hub for regulatory and competition matters.
The hire is part of A&O Shearman’s broader expansion strategy following its 2024 merger, with the firm continuing to add senior talent across core practice areas in the U.S. and internationally.
KEY QUOTES:
“We are thrilled to welcome Kathryn to the firm. Her ability to counsel on complex regulatory and competition issues makes her an excellent addition to our Antitrust practice, where our clients look to us to advise on bet-the-company matters and high-stakes litigations in the U.S. and globally.”
Adam Hakki, Partner, Co-Chair Executive Committee/Board And U.S. Chair, A&O Shearman
“Kathryn’s combination of antitrust trial experience, specialized counseling, disputes expertise, and deep sector knowledge positions her to successfully advise clients as antitrust scrutiny and enforcement intensifies across industries. I’m delighted she is joining the team.”
Noah Brumfield, Co-Head Of U.S. Antitrust, A&O Shearman
“I’m excited to join A&O Shearman and work with a globally integrated Antitrust practice and teams around the world. The firm’s global platform and deep sector expertise create a powerful opportunity to help clients navigate complex, consequential antitrust challenges across jurisdictions.”
Kathryn Mims, Partner, A&O Shearman
