 Acquisition will expand Constant Contacts CRM capabilities WALTHAM, MA and GAINESVILLE, FL ACCESSWIRE September 1, 2021 Constant Contact, an established leader in online marketing, backed by Clearlake Capital Group, L.P. together with its affiliates, Clearlake and Siris Capital Group, LLC together with its affiliates, Siris, announced today that it has completed its acquisition of SharpSpring SharpSpring NASDAQ:SHSP. 