Lu Han
On October 10, 2014, Lu Han became the second Chinese member of Exo to file to nullify his contract with SM and leave the group, just over four months after Kris had done the same. His lawsuit included the claim that SM had favored the Korean sub-unit Exo-K over the Chinese sub-unit Exo-M. Within 15 minutes of the announcement, company stocks had dropped by 9.41%, from KR₩37,000 to KR₩33,250 per share. The stock's worth contracted by 15%, hitting the maximum decrease in price KOSDAQ allows for a day, and falling to a more-than-one-year low. On July 21, 2016, Lu Han officially parted ways with Exo, although his contract with SM remains valid until 2022.