Leadership Team

The leadership team at W. S. Cumby has worked together for years to ensure W. S. Cumby fulfills its mission to be the highest caliber general construction and construction management firm in the Philadelphia area. Together they represent nearly a hundred years of service to W. S. Cumby.

William S. Cumby, Jr.

William S. Cumby, Jr. - LEED AP BD+C - President

William (Bill) S. Cumby, Jr. founded W.S. Cumby with his late father, William S. Cumby, Sr., in 1981, served as Vice President from 1981-1998 and as President since 1998. Bill Jr. has been an active member of his community having served as Mayor of Swarthmore, Pennsylvania, President of the Swarthmore Business District Authority, member of the Swarthmore Planning Commission and trustee of the Swarthmore Presbyterian Church. Additionally, Bill Jr. is a Past President and Trustee of the Carpenters' Company of Philadelphia and has been an active member since 1999. Bill Jr. holds a Bachelor of Arts degree from Gettysburg College, a Masters of Science degree from the University of Pennsylvania and a Masters of Business Administration degree from Temple University.

William Cumby, III Vice President

William Cumby III - Vice President

William (Bill) Cumby, III has over 15 years of experience in the commercial real estate, construction and finance industries. Prior to joining WS Cumby in 2016, he spent 15 years in the finance industry, 7 as a commercial real estate loan underwriter and commercial mortgage backed securities (CMBS) trader for Credit Suisse, and 8 as a portfolio manager for Pacific Investment Management Company (PIMCO). At PIMCO, he had various responsibilities, including advisor to the Federal Reserve Bank of New York from 2009-2010 for their TALF (term asset-backed securities loan facility) program. From 2014-2016 he worked in their alternative investments division, where he focused on commercial real estate private equity and debt and served on their real estate investment committee. Bill holds a BA in economics from Bowdoin College. At W.S. Cumby, Bill is responsible for financial and strategic oversight of the construction management business as well as management of the company’s real estate operations and development efforts. 

Dorothy Cumby Legal Counsel

Dorothy Cumby - Legal Counsel

Dorothy Cumby has experience in many areas of the law, including commercial real estate law and corporate law. She has a deep knowledge of real estate law, practice and customs throughout the United States and has extensive experience representing owners and developers of real estate, as well as individual investors and institutions with nationwide and international leasing requirements. Dorothy has provided expert legal advice to clients in all aspects of real estate law, including acquiring, selling, financing, restructuring, leasing and developing. Dorothy's experience includes all types of real property, including office buildings, shopping centers, apartment and other residential buildings, warehouses, manufacturing facilities, and unimproved land.

Dorothy is a partner at Cumby + Weems, LLP. Dorothy was an attorney at Debevoise and Plimpton LLP (1987 – 1990), Shearman & Sterling LLP (1990 – 1993) and Sullivan & Cromwell LLP (1993 – 2004) in each firm's Commercial Real Estate Group.

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