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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 Delaware ( State of incorporation ) FORM 10 - K 56 Evergreen Drive , Portland , Maine ( Address of principal executive office ) ImmuCell Corporation ( Exact name of Registrant as specified in its charter ) Large accelerated filer Non - accelerated filer Emerging growth company 001-12934 ( Commission file number ) 01-0382980 ( I.R.S. Employer Identification No. ) Registrant's telephone number : ( 207 ) 878-2770 Securities registered pursuant to Section 12 ( b ) of the Act : None Securities registered pursuant to Section 12 ( g ) of the Act : Common Stock , par value $ 0.10 per share ( Title of class ) Indicate by check mark if the Registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Act . 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 Securities Exchange Act of 1934 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 04103 ( Zip Code ) Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T during the preceding 12 months ( or for such shorter period that the Registrant was required to submit and post such files ) . Yes No Indicate by check mark whether the Registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company or an emerging growth company . Accelerated filer Smaller reporting company Indicate by check mark whether the Registrant has filed a report or an attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 USC 7262 ( b ) ) by the independent registered public accounting firm that prepared or issued its audit report . Yes No Indicate by check mark whether the Registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes No The aggregate market value of the voting and non - voting common equity held by non - affiliates at June 30 , 2020 was approximately $ 29,521,000 based on the closing sales price on June 30 , 2020 of $ 4.73 per share . The number of shares of the Registrant's common stock outstanding at March 19 , 2021 was 7,220,836 . Documents incorporated by reference : Portions of the Registrant's definitive Proxy Statement to be filed in connection with the 2021 Annual Meeting of Stockholders are incorporated by reference into Part III hereof .