Ostro is an AI-powered platform providing clinical content and health information solutions for pharmaceutical companies and healthcare providers. The company offers conversational AI tools that deliver PRC-approved content for drug information, patient engagement, and provider education. Founded in 2019 as RxDefine, Ostro rebranded and was acquired by Veeva Systems in March 2026.
Ostro has been acquired
This company is no longer available on our private secondary market.
Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Founded
2019
Employees
51–200
Total Funding
$55M
3 rounds
Total raised $55M across 3 rounds
Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Last updated 06-25-2026
Latest Round
Type
Strategic / Corporate Venture
Date
April 2025
Amount
Not disclosed
Valuation
—
Lead Investors
| Date | Round | Amount Raised | Valuation | Lead Investors |
|---|---|---|---|---|
| April 2025 | Strategic / Corporate Venture | Not disclosed | — | Havas Ventures |
| November 30, 2022 | Series B | $45M | — | Not explicitly designated, Founders Fund commonly cited |
| 2022 | Series A (or earlier) | $10M | — | Not disclosed |
Competitor list is illustrative and may be incomplete, stale, or erroneous.
Veeva Vault
Content management and compliance platform for life sciences.
Orchestrated Health
AI-powered patient and provider engagement platform.
Apptio
Technology business management and analytics platform.
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