#76

Cozen O'Connor

Philadelphia, PA · Led by Michael J. Heller

Revenue

$600M

Lawyers

775+

Offices

30+

Founded

1970

About Cozen O'Connor

Cozen O'Connor is a Philadelphia powerhouse that has grown from a boutique insurance practice into a full-service firm spanning more than 30 offices across the U.S., Canada, and the UK. Known for its entrepreneurial culture and deep bench in commercial litigation, the firm serves Fortune 500 companies and mid-market businesses alike. Cozen's relentless client focus and strategic expansion have made it one of the most dynamic firms in the Am Law 100.

Practice Areas

Commercial Litigation

Insurance Coverage

Labor & Employment

Corporate Law

Real Estate

Notable Clients

Subaru of America

Liberty Mutual

CIGNA

Comcast

Notable Alumni

Patrick O'Connor, former firm chairman and civic leader

Michael Mustokoff, prominent white-collar defense attorney

Fun Fact

Founder Stephen Cozen built the firm from a one-man insurance defense practice into a 775+ lawyer juggernaut in just over five decades.

Visit Cozen O'Connor

Get Glen's Musings

Occasional thoughts on AI, Claude, investing, and building things. Free. No spam.

Unsubscribe anytime. I respect your inbox more than Congress respects property rights.

Keep Exploring

Law Firms