Gretchen L. Temeles Ph.D.

Robert A. Silverman joined the firm’s Philadelphia office in March 2009 as a member in the Business Law Department. For the period from September 1981 through his arrival at Cozen O'Connor he practiced in the Real Estate Department of another major Philadelphia law firm, where he was a partner since 1989. A member in the Real Estate Practice Group, Robert represents developers, lenders and owners in a variety of sophisticated transactions, including the development of office buildings, ...

Brad M. Rostolsky is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Brad M., who practices law in Philadelphia, Pennsylvania, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brad M. is held by other top lawyers in the same geographic and legal practice area.

Kevin J. Hughes serves as co-chair of Cozen O’Connor’s Subrogation & Recovery Department, and is chair of the department’s Atlantic and Northeast regional offices. Kevin joined the firm in September, 1987 and has successfully litigated and tried cases throughout the United States in both state and federal court. He concentrates his practice in the prosecution of complex property damage claims arising out of fires, explosions, mechanical failures and structural collapses....

Cheryl A. Upham is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Cheryl A., who practices law in Philadelphia, Pennsylvania, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Cheryl A. is held by other top lawyers in the same geographic and legal practice area.

Dianne M. Nast is a magna cum laude graduate of Rutgers University School of Law. She is the founder and senior member of NastLaw LLC in Philadelphia. For almost 20 years, she was a senior shareholder with the Philadelphia law firm of Kohn, Nast & Graf, P.C. (now Kohn, Swift & Graf, P.C.), and then a senior shareholder at RodaNast, P.C. from 1995 to 2012. Ms. Nast, an active member of the bar for over four decades, has extensive experience in complex litigation. She has a reputation f...

Mark W. Tanner primarily represents victims of medical negligence and insurance bad faith, and also has substantial experience in cases involving disability insurance claims, civil rights claims, and class action litigation. An accomplished Philadelphia Personal Injury lawyer with a wide ranging practice, Mark has handled cases throughout the region and across the country, and has been appointed as a liaison counsel in mass tort litigation at both the state and federal court level. He has sec...

Michael J. Heller is the chief executive officer of Cozen O'Connor. He serves on the firm's board of directors, management committee and heads the emerging business and venture capital practice. Michael approaches each situation with an entrepreneurial zeal, and his investing experience arms him with a unique ability to provide legal and business insight into a variety of complex corporate matters. He understands, first hand, the critical roles of modern executives. Michael is a recognized le...

Caleb’s practice focuses on complex environmental litigation and environmental compliance. Caleb has represented clients in state and federal courts and in administrative proceedings. In his environmental litigation practice, Caleb often represents corporate clients in cost recovery, contribution and government enforcement actions under Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). Caleb has litigated such matters through trial and has also helped clien...

Jason M. Shargel joined the firm’s Philadelphia office in March 2009 as a member in the Business Law Department. Jason practices in the firm's Corporate Law Practice Group, and has more than 30 years of experience in the private practice of corporate and securities law. Having begun his career in the SEC's Enforcement Division, his practice includes mergers and acquisitions, as well as the representation of issuers and funds in venture capital, growth capital and other private equity fi...

John J. McAleese III is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Environmental. John J., who practices law in Radnor, Pennsylvania, has been recognized since 2003. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John J. is held by other top lawyers in the same geographic and legal practice area.