Umeng is a Private company founded by Fan Jiang in April 2010 and acquired by Alibaba Group in 2013. (Source) It is based in Beijing, China and has approxmately 50-100 employees.
Two company filings were found in Hong Kong: here and here.
Umeng is owned by the Alibaba Group. Alibaba is listed on the NYSE under the ticker BABA.
An opt-out page in Mandarin language was located here.
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