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Table of Contents OR 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 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from FORM 10 - K Delaware ( State or Other Jurisdiction of Incorporation or Organization ) Commission File Number : 001-35020 InfuSystem INFUSYSTEM HOLDINGS , INC . ( Exact Name of Registrant as Specified in its Charter ) to Title of Each Class 3851 West Hamlin Road Rochester Hills , Michigan 48309 ( Address of Principal Executive Offices ) ( Zip Code ) Common Stock , par value $ 0.0001 | per share Registrant's Telephone Number , including Area Code : ( 248 ) 291-1210 Securities Registered Pursuant to Section 12 ( b ) of the Act : 20-3341405 ( I.R.S. Employer Identification No. ) Trading Symbol ( s ) INFU Name of Each Exchange on which Registered NYSE American LLC Securities Registered Pursuant to Section 12 ( g ) of the Act : None ( 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 X 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 NO 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 periods as the registrant was required to file such reports ) and ( 2 ) has been subject to such filing requirements for the past 90 days . YES > NO D 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 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 emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer " , " smaller reporting company " and " emerging growth company " in Rule 12b - 2 of the Exchange Act .