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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 ANNUAL REPORT UNDER SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 FORM 10 - K For the fiscal year ended June 30 , 2021 □ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Title of each class None Commission file number 0-6658 Delaware ( State or other jurisdiction of incorporation or organization ) 80 Orville Drive , Suite 102 , Bohemia , New York ( Address of principal executive offices ) SCIENTIFIC INDUSTRIES , INC . ( Exact Name of Registrant in Its Charter ) to ( 631 ) 567-4700 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : 04 2217279 ( I.R.S. Employer Identification No. ) Title of Class Common stock , $ .05 par value 11716 ( Zip Code ) Name of each exchange on which registered None Securities registered pursuant to Section 12 ( g ) of the Exchange Act : 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 Yes > No Large accelerated filer Non - accelerated filer ( Do not check if a smaller reporting company ) Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website , if any , every Interactive Data File required to be submitted and posted 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 and post such files ) . Yes No Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S - K ( § 229.405 of this chapter ) is not contained herein , and will not be contained , to the best of registrant's knowledge , in definitive proxy or information statements incorporated by reference in Part III of this Form 10 - K or any amendment to this Form 10 - K . > Yes No Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , or a smaller reporting company . See the definitions of " large accelerated filer , " " accelerated filer " and " smaller reporting company " in Rule 12b - 2 of the Exchange Act . Accelerated filer Smaller reporting company Emerging Growth Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) Yes No