DENVER--(BUSINESS WIRE)--CoreSite Realty Corporation (NYSE:COR), a premier provider of secure, reliable, high-performance data center solutions across the US, today announced that its Board of Directors declared a cash dividend of $0.42 per share on common stock and common stock equivalents for the second quarter of 2015. The second-quarter common stock dividend will be paid on July 15, 2015, to shareholders of record on June 30, 2015. CoreSite’s Board of Directors also declared a cash dividend