Bangi I Bangi Investments, LLC acquired Compass Biotechnologies Inc. (OTCPK:COBI) on November 16, 2018. BANGI will trade as OTC:COBI until approval for its unique ticker symbol. Bangi Investments, LLC completed the acquisition of Compass Biotechnologies Inc. (OTCPK:COBI) on November 16, 2018.