Thoma Bravo to Acquire Majority Interest in Apttus SAN FRANCISCO and SAN MATEO, Calif., September 4, 2018-- Thoma Bravo, a leading private equity investment firm, today announced that it has signed a definitive agreement to acquire a majority interest in Apttus, the global Middle Office leader. The transaction is expected to close in early October, subject to usual and customary closing conditions and regulatory approvals. Apttus' solutions automate, optimize and apply artificial intelligence to the most important set of business processes for any enterprise – generating revenue and managing key commercial relationships.