William S. Cumby, Jr., LEED AP - President
William Cumby, 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. Bill Jr. founded W.S. Cumby with his 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. Currently, he serves as President of the Carpenters' Company of Philadelphia.

Craig Irvine, LEED AP - Vice President of Operations
Craig Irvine has 22 years of experience in the construction industry. Craig holds a Bachelor of Arts in Business Administration Management from Bloomsburg University. Craig is a member of the Delaware Valley Green Building council and is a Green Advantage Certified Professional. Mr. Irvine is responsible for overseeing both home office and field operations on all projects in the construction phase including, execution of contracts, project management administration and oversight of jobsite safety.

Michael Boess, LEED AP, Chief Estimator
Michael Boess is the director of the company's estimating department and has 25 years of experience in the construction industry starting out in his family's construction business. Mike holds a Bachelor of Science

degree in Business Administration from Elizabethtown College and continued his education at Penn State University in Construction Engineering. He has served in various management roles including Estimator, Senior Estimator, Estimating Manager and Project Manager. As Chief Estimator, he leads the preconstruction estimating, value engineering and bidding and buyout efforts.

Michael O'Brien, LEED AP - Vice President of Business Development
Michael O'Brien's career in the construction industry spans 25 years, including experience in the construction of industrial facilities as well as owner/president of an independent contracting firm. Since joining W.S. Cumby, he served as Superintendent, Senior Project Manager and Director of Business Development before being named Vice President in February of 2005. Mike holds a Certificate in Construction Management from Drexel University where he continued his education in Operations Management. He is a LEED AP, member of the Board of Directors of both the Delaware Valley Green Building Council and Habitat for Humanity, Certified Green Advantage Instructor and has facilitated over 100 AIA Accredited Continuing Education Seminars on the LEED process.