OpenX
PrivateLast Round
Series E
Jan 17, 2013
Total Funding Raised
$73M
Momentum
Top 25%
of companies Caplight tracks
Company Overview
OpenX is an advertising technology company that offers a web and mobile platform to help brands effectively reach their customers while gaining insights into their audience and optimizing advertising performance across the open web.
Sector
Media, Entertainment & Gaming
Verticals
Digital Advertising, Digital Publishing, Marketing
Business Model
B2B2C
Customer Profile
Marketplace Commission, Revenue Share, Data as a Service, Services & Consulting
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
OpenX Comps
Public and private peers based on sector, stage, and business model.
OpenX Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series E | Jan 17, 2013 | ||||
| Series D | May 31, 2011 | ||||
| Series C | May 26, 2009 | ||||
| Series B | Jan 16, 2008 | ||||
| Series A | Jun 13, 2007 |
OpenX Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| O'Reilly AlphaTech Ventures | Series A, Series B |
| Coastal Grove Partners | Series E |
| Mangrove Capital Partners | Series C, Series A, Series B |
| Mitsui Global Investment | Series E, Series D |
| SharesPost | Series E |
| AOL Ventures | Series D |
| Samsung Venture Investment | Series E |
Market signals
Structured signals derived from secondary market and firmographic data.
- Apr 21, 2026
Joseph Worswick promoted to SVP of Global Partnerships.
- Apr 21, 2026
Erika Loberg promoted to VP of CTV and Curation.
OpenX Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation |
Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation |
Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation |
Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation |
Frequently Asked Questions
Common questions about OpenX's valuation, stock price, and market status.
