Nexxen (formerly Tremor International Ltd.) is a New York-based, publicly traded online advertising company.

Nexxen was founded as Marimedia in 2007 by Maia Shiran and Ariel Cababie and focused on digital advertising monetization.

[1] Levy was also a director and investor at Taptica, a mobile advertising technology company from which Marimedia would later take its name.

[9] 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 2020, the combined company acquired video ad platform, Unruly, from News Corp.[13] In September of 2022, Tremor International closed on the acquisition of Amobee for $239M.