Cvent Inc. bought event management software company SignUp4 LLC for $22.4 million. Tysons Corner, Va.-based Cvent (NYSE: CVT) said it expects SignUp4 to contribute $1.5 million in revenue for the remainder of 2015. "Our acquisition of SignUp4 enhances our market position, bringing Cvent a strong customer base and additional event management functionality," said Cvent CEO Reggie Aggarwal, in a statement. "We believe our increasingly comprehensive product suites for customers on both sides...