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The company was founded as Marimedia in 2007 by Maia Shiran and Ariel Cababie, as an online advertising company. The principal technology platform was launched in 2011 as Ad$Gadget. It was subsequently renamed as Qadabra. It acted as an interface between buyers and sellers of online advertising.
In November 2010, Hagai Tal and Ehud Levy acquired 50% of the company, with Hagai Tal becoming chief executive office in December 2013. Ehud Levy was also a director and investor at Taptica, a mobile advertising technology company from which Marimedia would later take its name. Taptica was founded in 2012 in San Francisco by Sigal Bareket and Kobi Marenko.In April 2014, Marimedia acquired a purchase option for Taptica in return for extending a $1.5 million credit line. In order to fund the option, Marimedia listed on AIM in London May 2014, raising £17.9 million. Marimedia purchased Taptica for $13.6 million in October 2014.In May 2015, the company issued a profit warning and said it planned to close its original business of Qadabra and focus solely on Taptica. The company changed its name to Taptica in September 2015.
In September 2015, the company acquired social marketing tech company AreaOne, formerly known as SocialClicks. In 2016, Taptica acquired 57% of Japan-based Adinnovation for $5.7 million. In 2017, Taptica acquired Tremor Video's demand-side platform for $50 million, a company from which they would later take their name.In December 2018, Hagai Tal stepped down as CEO after a US court ruled that he had concealed material facts during the sale of Plimus in 2011. In 2019, Taptica added an office in Guangzhou, China as part of its Asia expansion.In February 2019 Taptica merged with RhythmOne. Both companies were listed on the stock exchange, so Taptica retained its listing and RhythmOne shares were converted into Taptica shares. Ofer Druker, the former CEO of Matomy Media, was announced in April 2019 as the CEO of the combined entity. In June 2019 Taptica renamed itself to Tremor International. In 2020, the combined company acquired video ad platform, Unruly, from News Corp.
