Mark Kallas

Grant Thornton LLP provides accounting, tax and business consulting services. It offers advisory, business consulting, business risk, enterprise technology and innovation, transaction services, data analytics, cyber risk, and data integrity services. The firm serves the construction, real estate and hospitality, consumer and industrial products, energy, financial services, health care and life sciences, not for profit organizations, private equity, public sector, and technology industries. The company was founded in 1924 and is headquartered in Chicago, IL.

Part of Children's Hospital & Health System, Inc., Children's Service Society of Wisconsin operates as a nonprofit child welfare agency and administers hospitals. The company is based in Burlington, WI. Children's Service Society of Wisconsin was acquired by Children's Hospital & Health System, Inc. on January 09, 2004.

Children's Hospital of Wisconsin, Inc. is a healthcare organization that focuses on the physical, social, and mental well-being of children. The non-profit company is based in Wauwatosa, WI and was founded by William Grossman. The company provides child-friendly environments, resources, and medical knowledge to impact children's health at home and school. Children's Hospital of Wisconsin has been nationally ranked among the best in the nation in four specialties, according to the U.S. News & World Report's 2023-24 Best Children's Hospitals report. The company is committed to doing the best for kids at every turn and are a charitable, tax-exempt organization.

E-S Plastic Products LLC is a private company that specializes in manufacturing and supplying injection molded parts and assemblies. The company is based in Waterford, WI.

Trade Press Media Group, Inc. publishes newspapers and business magazines. It manages various industry websites, produces education webcasts, offers informational email newsletters and develops a myriad of other media products. The firm serves the facilities management, rail and commercial cleaning industries. The company was founded by Harry Apple in 1915 and is headquartered in Wauwatosa, WI.

Children's Hospital of Wisconsin Foundation, Inc. provides philanthropic support to Children's Hospital and Health System, Inc. and its tax-exempt affiliates. The Foundation has advanced the Health System's mission by securing endowment funds for a large number of programs and services related to pediatric patient care, education, research and advocacy for children. The firm's accomplishments include: helping to fund the creation of the Children's Hospital's child protection center and the child life program of education and play therapy for children; significant funding of the hospital's intensive care units' equipment; and funding for school-based health centers in Milwaukee schools.