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Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , DC 20549 FORM 10 - K X ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-38709 Osmotica Pharmaceuticals plc ( Exact name of registrant as specified in its charter ) Ireland ( State or other jurisdiction of incorporation or organization ) 400 Crossing Boulevard Bridgewater , NJ 08807 ( Address of principal executive offices ) ( Zip Code ) ( 908 ) 809-1300 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Exchange Act : Title of each class Ordinary shares , $ 0.01 nominal value per share Trading Symbol ( s ) OSMT Name of each exchange on which registered Nasdaq Global Select Market Securities registered pursuant to Section 12 ( g ) of the Exchange Act : None 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 Exchange 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 Accelerated filer Not Applicable ( I.R.S. Employer Identification No. ) 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 ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit 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 . See definitions of “ large accelerated filer , " " accelerated filer , ” “ smaller reporting company ” and “ emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer Non - accelerated filer > Smaller reporting company Emerging growth company If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant has filed a report on and 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 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . 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 shares held by non - affiliates of the registrant on June 30 , 2020 , based upon the closing price of $ 6.73 of the registrant's ordinary shares as reported on the Nasdaq Global Select Market , was approximately $ 78.9 million . Indicate the number of shares outstanding of each of the registrant's classes of common stock , as of the latest practicable date . Class Ordinary shares , $ 0.01 nominal value per share DOCUMENTS INCORPORATED BY REFERENCE Outstanding at March 29 , 2021 62,719,131 shares Portions of the registrant's definitive Proxy Statement for the 2021 Annual Meeting of Shareholders to be filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10 - K are incorporated by reference in Part III items 10-14 of this Annual Report on Form 10 - K .