Attorneys

Sarah R. Schalman-Bergen

Shareholder

Sarah R. Schalman-Bergen is a Shareholder at the Firm. She Co-Chairs the Firm’s Employment Law Department and is a member of the Firm’s Antitrust, Insurance Products & Financial Services, and Lending Practices & Borrowers’ Rights Departments.

Richard Schwartz

Senior Counsel

Richard Schwartz is Senior Counsel in the Antitrust practice group.  Mr. Schwartz concentrates his practice in the area of complex antitrust litigation with a focus on representation of direct purchasers of prescription drugs.

Daniel C. Simons

Senior Counsel

Daniel C. Simons is Senior Counsel in the Antitrust and Consumer Protection Groups. He concentrates a significant percentage of his practice on complex antitrust litigation, with a focus on anticompetitive arrangements in the pharmaceutical industry.

David F. Sorensen

Managing Shareholder

David Sorensen is a Managing Shareholder and Co-Chair of the Firm’s antitrust department. He graduated from Duke University (A.B. 1983) and Yale Law School (J.D. 1989), and clerked for the Hon. Norma L. Shapiro (E.D. Pa.).

Mark Suter

Associate

Mark Suter is an Associate in the Firm’s Philadelphia office. He represents businesses, workers, consumers, and public entities in complex civil litigation, including class and collective actions, with a focus on antitrust, labor, and consumer protection matters.

Martin I. Twersky

Shareholder

Martin I. Twersky is a Shareholder in the Antitrust Department.  He has considerable experience in litigation involving a wide range of industries including oil and gas, banking, airline, waste hauling, agricultural chemicals and other regulated industries. 

Y. Michael Twersky

Associate

Y. Michael Twersky concentrates his practice primarily on representing plaintiffs in complex litigation, including on insurance, antitrust, and environmental matters. In the past, Mr. Twersky has worked on a wide variety of insurance matters including an insurance case in which a Federal District Court found on Summary Judgement that a large insurance company had breached its policy when it denied benefits under an accidental death insurance plan.

Nick Urban

Associate

Nick Urban is an Associate in the Antitrust practice group. He concentrates his practice in the area of complex antitrust litigation.

Daniel Walker

Shareholder

Dan Walker is a Shareholder of the Firm, which he rejoined in July 2017 after serving three years in the Health Care Division at the Federal Trade Commission. Mr. Walker practices in the Firm’s Washington, D.C. office.

Michaela Wallin

Associate

Michaela Wallin is an Associate in the Antitrust and Employment Law practice groups.  Ms. Wallin’s work in the Antitrust group involves complex class actions, including those alleging that pharmaceutical manufacturers have wrongfully kept less expensive drugs off the market, in violation of the antitrust laws.

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