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, 2019 Commission File No.: 001-38370 CollPlant Biotechnologies Ltd. (Exact name of registrant as specified in its charter) Translation of registrant's name into English: Not applicable 4 Oppenheimer, Weizmann Science Park Rehovot 7670104 , Israel Tel: +972 73 232 5600 (Jurisdiction of incorporation or organi ...