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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D. C. 20549 ( Mark One ) ANNUAL REPORT PURSUANT TO SECTION 13 or 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 No X TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 No X For the transition period from Delaware ( State or other jurisdiction of incorporation or organization ) FORM 10 - K to Title of each class Common Stock , $ .10 par value OR Securities registered pursuant to Section 12 ( b ) of the Act : Commission file number 1-10526 UNITED - GUARDIAN , INC . ( Exact name of Registrant as specified in its charter ) 230 Marcus Blvd. , Hauppauge , NY 11788 ( Address of principal executive offices , including zip code ) ( 631 ) 273-0900 Registrant's telephone number , including area code Trading Symbol ( s ) . UG 11-1719724 ( I.R.S. Employer Identification No. ) Name of each exchange on which registered The NASDAQ Global Market Securities registered pursuant to Section 12 ( g ) of the 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 Cover Page 1 of 2 Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes