Ostro

Based in Florida, US, Rise Healthcare Tech, Inc. , doing business as Ostro, formerly known as RxDefine, provides a platform that creates personalized healthcare journeys. In March 2026, Veeva Systems acquired Ostro from Havas Ventures, Byers Capital, Bling Capital, Trust Ventures, Caffeinated Capital, Founders Fund, Greycroft, and RRE Ventures for USD 100 million in cash and long-term equity retention grants. The company was founded by Chase Feiger, Ahmed Elsayyad, and Ryan Junee.

The company offers an Ostro platform that consists of Ostro navigate and helps in finding better treatment, and Ostro attribute which is an analytics product that connects brand marketing campaigns to clinical outcomes. Additionally, it provides Ostro consult which is a telehealth connection that connects patients with experienced and qualified clinicians. Furthermore, it provides a solution to pharmaceutical companies, medical devices, digital therapeutic companies, and diagnostic tool companies. The acquisition enables Veeva Systems to integrate Ostro’s AI-based brand engagement platform into its Commercial Cloud to connect online and field interactions for life sciences customers.