John C. Grebe

exida.com LLC provides functional safety and control system security products, services, and support solutions. It offers on-site and on-line safety training, web seminars, virtual classroom training services, as well as publishes safety equipment books. The firm also offers end user and OEM system consulting, product testing and certification, assessment, cyber security, and alarm management services. The company was founded by William M. Goble and Rainer Faller in 1997 and is headquartered in Sellersville, PA.

Part of Leelyn Smith LLC, Grebe & Associates, P C is a public accounting and consulting company that provides accounting, tax and financial advisory services. The company is based in Wheaton, IL. The company was founded in 1991. Grebe & Associates, P C was acquired by Leelyn Smith LLC on December 19, 2022.