Stephen Kastenberg > Ballard Spahr LLP > Philadelphia, United States > Lawyer Profile
Ballard Spahr LLP Offices
1735 MARKET STREET, 51ST FLOOR
PHILADELPHIA, PA 19103-7599
PENNSYLVANIA
United States
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Stephen Kastenberg
Work Department
Litigation
Position
Partner
Career
Stephen J. Kastenberg focuses on complex business litigation with an emphasis on antitrust and competition, securities, and corporate governance litigation. He has successfully defended public and private companies and universities in federal and state lawsuits, including class actions, throughout the United States. He also regularly represents clients as plaintiffs in business disputes, or assists them through internal investigations. Stephen is based in Philadelphia and is a member of the firm’s Elected and Expanded Boards.
In his nearly 30 years of litigation experience, Stephen has achieved a significant number of victories through trial, arbitration, summary judgment, advantageous settlement, and on appeal. His clients range from Fortune 100 multinational corporations to privately held companies and nonprofit organizations, and span such industry sectors as pharmaceuticals, chemicals, investments, media and technology, real estate, financial services, and higher education.
Admissions
New Jersey
Pennsylvania
Supreme Court of New Jersey
Supreme Court of Pennsylvania
U.S. District Court for the Eastern District of Pennsylvania
U.S. Court of Appeals for the Second Circuit
U.S. Court of Appeals for the Third Circuit
U.S. Court of Appeals for the Fourth Circuit
U.S. Court of Appeals for the Ninth Circuit
U.S. Court of Appeals for the Tenth Circuit
U.S. Court of Appeals for the Eleventh Circuit
Memberships
American Bar Association, Antitrust Section
New Jersey State Bar Association
Pennsylvania Bar Association
Philadelphia Bar Association
Ballard Spahr’s Pro Bono Committee
New Jersey Scholars Program, Member and past President
Lawyers’ Committee for Civil Rights, Director and Trustee
Police Corruption Task Force, past appointee by Philadelphia Mayor Edward Rendell
Education
Harvard Law School (J.D., cum laude, 1992)
Managing Editor, Harvard Journal on Legislation
Princeton University (A.B., cum laude, 1988)
Lawyer Rankings
United States > Antitrust > Civil litigation/class actions: defense
Ballard Spahr LLP frequently acts in high-stake matters in the pharma, agricultural, retail and financial sectors. The firm is well versed in monopolization and conspiracy claims, and also has experience handling allegations of tying and no poach agreements. Practice head Leslie John specializes in pharmaceutical and healthcare antitrust litigation and counsels on antitrust compliance particularly in relation to mergers and acquisitions. Jason Leckerman chairs the firm’s litigation department and acts on both sides of antitrust and competition matters. Stephen Kastenberg has extensive experience in representing private and Fortune 100 multinational companies in litigation involving collusive dealing, price discrimination and more. Other key attorneys include monopolization and conspiracy case expert Edward Rogers and New York based James Mitchell, who focuses on both criminal and civil litigation. Jay Fastow is no longer at the firm. All lawyers are in Pennsylvania unless otherwise stated.
Lawyer Rankings
Top Tier Firm Rankings
Firm Rankings
- Real estate > Land use/zoning
- M&A/corporate and commercial > M&A: middle-market (sub-$500m)
- Finance > Restructuring (including bankruptcy): municipal
- Labor and employment > Employee benefits, executive compensation and retirement plans: design
- Finance > Fintech
- Labor and employment > Labor-management relations
- Dispute resolution > Product liability, mass tort and class action - defense: automotive/transport
- Real estate > Real estate
- Real estate > Real estate investment trusts (REITs)
- Energy > Renewable/alternative power
- Dispute resolution > Financial services litigation
- Media, technology and telecoms > Media and entertainment: litigation
- Real estate > Real estate finance
- Antitrust > Civil litigation/class actions: defense
- Dispute resolution > Securities litigation: defense
- Finance > Financial services regulation
- Dispute resolution > Corporate investigations and white-collar criminal defense