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( Mark One ) 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 September 30 , 2021 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from FORM 10 - K Title of each class Common Stock New Jersey ( State or other jurisdiction of incorporation or organization ) Commission File No. 0-18492 DLH HOLDINGS CORP . ( Exact name of registrant as specified in its charter ) 3565 Piedmont Road , Building 3 , Suite 700 Atlanta , Georgia ( Address of principal executive offices ) X to DLHC 22-1899798 ( I.R.S. Employer Identification No. ) ( 770 ) 554-3545 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Exchange Act Trading Symbol ( s ) 30305 ( Zip code ) Securities registered pursuant to Section 12 ( g ) of the Securities 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 o No ý Name of each exchange on which registered Nasdaq Capital Market Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act . Yes o No ý 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 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 ý No o 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 2 months ( or for such shorter period that the registrant was required to submit such files ) . Yes ý No o 1 Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , or 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 . ( check one ) : Large accelerated filer o Non - accelerated filer Accelerated filer o Smaller Reporting Company Emerging Growth Company X || 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 accountant standards provided pursuant to Section 13 ( a ) of the Exchange Act . Yes o No ý 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 ý The aggregate market value of the voting and non - voting common equity held by non - affiliates , as of the last business day of the registrant's most recently completed second fiscal quarter , March 31 , 2021 , was $ 54,418,928 . As of December 3 , 2021 there were 12,714,269 shares of the Registrant's common stock outstanding . DOCUMENTS INCORPORATED BY REFERENCE List hereunder the following documents if incorporated by reference and the Part of the Form 10 - K ( e.g. , Part I , Part II , etc. ) into which the document is incorporated : ( 1 ) Any annual report to security holders ; ( 2 ) Any proxy or information statement ; and ( 3 ) Any prospectus filed pursuant to Rule 424 ( b ) or ( e ) under the Securities Act of 1933 . Part III of this report incorporates information by reference from the Company's definitive proxy statement , which proxy statement is due to be filed with the Securities and Exchange Commission not later than 120 days after September 30 , 2021 .