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☑ SECURITIES AND EXCHANGE COMMISSION 100 F Street NE Washington , D.C. 20549 FORM 10 - K Annual Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the Fiscal Year Ended September 30 , 2021 or ☐ Transition Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the transition period from to Commission File No. 001-33384 ESSA Bancorp , Inc. ( Exact name of registrant as specified in its charter ) Pennsylvania ( State or other jurisdiction of incorporation or organization ) 200 Palmer Street , Stroudsburg , Pennsylvania ( Address of Principal Executive Offices ) 20-8023072 ( I.R.S. Employer Identification Number ) 18360 ( Zip Code ) Title of each class ( 570 ) 421-0531 ( Registrant's telephone number ) Securities Registered Pursuant to Section 12 ( b ) of the Act : Common Stock , $ 0.01 par value Trading Symbol ( s ) ESSA Name of each exchange on which registered The NASDAQ Stock Market , LLC Securities Registered Pursuant to Section 12 ( g ) of the Act : None NO ☑ NO Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . YES ☐ 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 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 twelve months ( or for such shorter period that the Registrant was required to file such reports ) and ( 2 ) has been subject to such requirements for the past 90 days . YES ☑ 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 , 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 . Large accelerated filer Non - accelerated filer Emerging growth company ◎ Accelerated filer Smaller reporting 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 ☑ As of December 7 , 2021 , there were 18,133,095 shares issued and 10,490,831 shares outstanding of the Registrant's Common Stock . The aggregate market value of the voting and non - voting common equity held by non - affiliates of the Registrant , computed by reference to the last sale price on March 31 , 2021 , was $ 158,636,768 . DOCUMENTS INCORPORATED BY REFERENCE Proxy Statement for the 2021 Annual Meeting of Stockholders of the Registrant ( Part III ) .