Two months after its founding CEO mysteriously left the company, Apttus has a new majority owner. The private equity firm Thoma Bravo, which also owns the cloud security company Barracuda Networks, announced its majority acquisition of Apttus on Tuesday. The terms of the deal were not disclosed. Apttus, which was last valued at $1.86 billion, previously said it would IPO in 2016, and again in 2017. But the company never made it to Wall Street. Two months after Apttus's founding CEO Kirk Krappe mysteriously exited the company, the sales software startup has a new majority owner.