The Riverside Company-backed Buildout, a developer of commercial real estate property marketing automation software, completed the acquisition of Apto, a software developer. Financial terms were not disclosed. "The Apto team has demonstrated an impressive level of CRE broker intimacy with the solutions and business that they’ve built. By joining our two companies, together we’re taking a big leap into the future and realizing our shared vision of how brokers will operate at the center of CRE in the future," Kirk Ziehm, Buildout CEO.