Member Companies
- Advanta Corp.
- Airgas, Inc
- American Water
- AmerisourceBergen Corporation
- Aqua America, Inc.
- Atlas Energy, Inc.Auxilium Pharmaceuticals
- Bowne of Philadelphia
- Brandywine Realty Trust
- Bristol-Myers Squibb Company
- Broadridge
- Business Wire
- Campbell Soup Company
- Carpenter Technology Corporation
- Charming Shoppes, Inc.
- Chesapeake Utilities Corp.
- Comcast Corporation
- Covance Inc.
- Creative Strategy Group, Inc.
- Crown Holdings, Inc.
- Curran & Connors, Inc.
- D.F. King & Co., Inc.
- Delphi Financial Group, Inc.
- Endo Pharmaceuticals, Incorporated
- Eurand Pharmaceuticals, Inc.
- FMC Corporation
- Fulton Financial Corporation
- GlaxoSmithKline, plc
- Greg Ryan Communications
- Harleysville Group Inc.
- ImClone Systems Incorporated
- IMPAX Laboratories, Inc.
- Incyte Corporation
- Liberty Property Trust
- Lincoln National Corporation
- Market Intelligence Group LLC
- Morningstar Document Research
- National Penn Bancshares, Inc.
- NRG Energy, Inc
- NutriSystem, Inc.
- NYSE Euronext, Inc..
- Penn Security Bank and Trust Company
- Pennsylvania Real Estate Investment Trust
- Pep Boys
- Pepco Holdings, Inc.
- PHH Corporation
- PPL Corporation
- PR Newswire
- Quaker Chemical Corporation
- Radian Group Inc.
- RAIT Investment Trust
- Safeguard Scientifics, Inc.
- Savient Pharmaceuticals, Inc.
- South Jersey Industries
- Stellar Partners LLC
- Strategic Corporate Advocates
- Sunoco, Inc.
- Tasty Baking Company
- Technitrol, Inc.
- The Redstone Group, LLC
- The Hershey Company
- Triumph Group, Inc.
- Unisys Corporation
- ViroPharma Incorporated
- VIST Financial Corp.
- West Pharmaceutical Services
- Willis Group Holdings
- Wilmington Trust Corporation