Ronald Klausner

Cambium Learning Group, Inc. engages in the provision of educational solutions and services. It operates through the following business segments: Learning A-Z, Voyager Sopris Learning, and ExploreLearning. The Learning A-Z segment offers technology-enabled learning resources for PreK-6 education. The Voyager Sopris Learning segment provides technology, materials, and professional development for educators. The ExploreLearning segment develops STEM-based curriculum tools in the field of math and science. The company was founded in 2009 and is headquartered in Dallas, TX.

Voyager Learning Co. is a publisher of solutions for the education, automotive and power equipment markets. It focuses on three market areas related to K-12 education, reading programs and resources, math and science programs and resources, and professional development programs. The company was founded in 1994 and is headquartered in Ann Arbor, MI.

The Dun & Bradstreet Corp. engages in the provision integrating data and insights services. It offers product to finance, sales and marketing, master data, supplier management, and compliance. The company was founded on July 20, 1841 and is headquartered in Short Hills, NJ.

ProQuest LLC provides software research solutions that connect people and information. It offers discover services, management solutions, data services, research tools, ebooks, collection management services, print books, and news and newspapers. The company was founded by Eugene Power in 1938 and is headquartered in Ann Arbor, MI.

Graduation Alliance, Inc. provides online and alternative educational services. It provides alternative education, diploma courses, and training and placement. The company was founded by Rebekah Richards, Pilzer Paul Zane and Gregg Rosann in 2007 and is headquartered in Salt Lake City, UT.