 SHANGHAI, April 26, 2021 PRNewswire -- CooTek Cayman Inc. NYSE: CTK CooTek or the Company, a fast-growing global mobile internet company, today announced that it filed its annual report on Form 20-F for the fiscal year ended December 31, 2020 with the Securities and Exchange Commission the SEC on April 26, 2021. The annual report can be accessed on the Companys investor relations website at as well as the SECs website at 