AppNexus Stock

Programmatic online advertising

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Notable Investors



New York NY, US

Total Funding


About AppNexus Stock

AppNexus is an internet technology company that enables and optimizes the real-time sale and purchase of digital advertising. The company’s real-time decisioning platform supports core products that enable publishers to maximize yield; and marketers and agencies to harness data and machine learning to deliver intelligent and customized campaigns. Headquartered in New York City, AppNexus employs over 1000 professionals in offices spanning five continents. 

Source: AppNexus


Funding History

December 2007$2.5M
August 2008$8.4M
September 2009$5.0M
October 2010$50.0M
January 2013$75.0M
March 2014$2.0M
August 2014$110M
October 2014$174M
April 2015$65.2M
August 2016$31.3M


Founder and CEO

Brian O'Kelley


Michael Rubenstein

Chief Financial Officer

Jonathan Hsu

Chief Operating Officer

Ryan Christensen

Chief Data Scientist

Catherine Williams

Chief Technology Officer

Ben John

Chief People and Legal Officer

Nithya Das


AdExchanger - May, 4 2017

AppNexus Dives Into Connected TV

PR Newswire (press release) - May, 4 2017

AppNexus, LiveRamp, and MediaMath Launch Technology ...

PR Newswire (press release) - May, 3 2017

AppNexus Launches Initiative To Drive Toward GDPR Compliance

Ad Exchanger - Jun, 5 2014

AppNexus Tries M&A, Mulls 2015 IPO

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