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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , DC 20549 FORM 20 - F ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 Commission File No .: 001-37846 CELLECT BIOTECHNOLOGY LTD . ( Exact name of registrant as specified in its charter ) Translation of registrant's name into English : Not applicable 23 Hata'as Street Kfar Saba , Israel 44425 ( +972 ) ( 9 ) 974 1444 ( Address of principal executive offices ) State of Israel ( Jurisdiction of incorporation or organization ) Dr. Shai Yarkoni Chief Executive Officer ( +972 ) ( 9 ) 974 1444 Shai@cellectbio.com 23 Hata'as Street Kfar Saba , Israel 44425 ( Name , Telephone , E - mail and / or Facsimile number and Address of Company Contact Person ) Securities registered or to be registered pursuant to Section 12 ( b ) of the Act : Name of each exchange on which each class is to be registered Title of each class to be registered Trading Symbol ( s ) American Depositary Shares , each representing one hundred ( 100 ) Ordinary Shares , no par value per share APOP Warrants to purchase American Depositary Shares APOPW Ordinary Shares , no par value per share * The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC N / A * Not for trading , but only in connection with the registration of the American Depositary Shares pursuant to requirements of the Securities and Exchange Commission . Securities registered or to be registered pursuant to Section 12 ( g ) of the Act : None Securities for which there is a reporting obligation pursuant to Section 15 ( d ) of the Act : None Number of outstanding shares of each of the issuer's classes of capital or common stock as of December 31 , 2020 : 390,949,079 ordinary shares . Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes □ No ☑ If this report is an annual or transition report , indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Exchange Act of 1934 . Yes □ No Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Exchange Act during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No □