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Hooman Radfar

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Occupation  Entrepreneur

Name  Hooman Radfar
Hooman Radfar AddThis founder Hooman Radfar moves west Washington
Born  July 14, 1980 (age 35) (1980-07-14) London, England,
Residence  San Francisco, California, U.S.

Hooman radfar cofounder of addthis at startup grind dc

Hooman Radfar (born July 14, 1980, London, England) is an American entrepreneur and investor. He is a partner at Expa, a San Francisco-based start-up studio. Previously he was co-founder and served as CEO of AddThis. AddThis provides the most widely used marketing tools for web site creators. According to web measurement firm ComScore, in 2015 the platform was ranked #1 in AdFocus, reaching over 97% of users in the United States ahead of Google, Yahoo and Facebook. The platform reaches 2.1 billion users world-wide monthly. According to TechCrunch, AddThis was purchased by Oracle in 2016 for around $200 million.


Hooman Radfar Hooman Radfar CEO amp CoFounder Clearspring Technologies

Hooman radfar tech cocktail sessions dc april 2013

Early life and education

Hooman Radfar AddThis founder Hooman Radfar Is All About Progression

At the time of the Iranian Revolution, his family immigrated to England in 1979. Radfar was born in London in 1980. His family later moved to the United States where he was raised in Pittsburgh, Pennsylvania. Radfar graduated from Upper St. Clair High School in 1998. In 2002, he graduated magna cum laude from the University of Pennsylvania with degrees in Computer Science and Economics. In 2004, he earned his M.S. in Information Networking from the Information Networking Institute at Carnegie Mellon University where he researched social networking.

AddThis (Clearspring)

Hooman Radfar Keynote Address by Hooman Radfar YouTube

In 2004, Radfar and Austin Fath founded Clearspring Technologies to create developer platforms based on their graduate research in web services and social networking at Carnegie Mellon. Clearspring launched the first content sharing and tracking service for web publishers in 2006. The company acquired AddThis in 2008 and XGraph in 2011. Renamed AddThis in 2012, the company provides the largest personalization platform on the web to a network of 15M publishers.


In 2013 Radfar founded 10e9 an early stage investment and advisory company. As director of 10e9, he has worked with companies like Convoy, Uber, Hyperloop, Hinge, Washio, Sweetgreen. and more.


In 2014, Hooman moved to San Francisco, joining Expa as an EIR. He became a partner at the firm alongside Uber co-founder Garrett Camp and Foursquare co-founder Naveen Selvadurai in 2015.

Awards & recognition

He was named one of Tech's Best Entrepreneurs by BusinessWeek alongside Twitter co-founder Jack Dorsey. He is also a Top 25 Marketing Leader and Innovator Online according to iMedia Publications. He was a commencement speaker at Carnegie Mellon's Information Networking Institute and a Whiting Turner Lecturer at the University of Maryland.


Hooman Radfar Wikipedia