[Subject to Completion. Dated , 2014. American Depositary Shares Weibo Corporation Representing Ordinary Shares This is an initial public offering of American depositary shares, or ADSs, of Weibo Corporation. We are offering ADSs. Each ADS represents of our ordinary shares, par value $0.00025 per share. Risk Factors See “ Per ADS Total Initial public offering price $ $ Underwriting discount]