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☑ UNITED STATES SECURITIES AND EXCHANGE COMMISSION 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 December 31 , 2020 ☐ 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. 001-34582 N NORTHWEST BANCSHARES , INC . Maryland ( Exact name of registrant as specified in its charter ) ( State or other jurisdiction of incorporation or organization ) 100 Liberty Street , Warren , Pennsylvania ( Address of Principal Executive Offices ) Title of each class Common Stock , $ 0.01 Par Value ( 814 ) 726-2140 ( Registrant's telephone number ) 27-0950358 ( I.R.S. Employer Identification Number ) Securities Registered Pursuant to Section 12 ( b ) of the Act : Trading symbol ( s ) NWBI 16365 ( Zip Code ) Name of each exchange on which registered NASDAQ Stock Market , LLC 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 > No ☐ 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 ☑ 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 , smaller reporting company , or an emerging growth company . See the definition of “ large accelerated filer , " " accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . ☑ Large accelerated filer ㅁ □ Non - accelerated filer ☐ Accelerated filer Smaller reporting company ☐ Emerging growth 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 . Yes > No □ 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 February 22 , 2021 , there were 126,949,388 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 June 30 , 2020 , as reported by the Nasdaq Global Select Market , was approximately $ 1.308 billion . DOCUMENTS INCORPORATED BY REFERENCE Proxy Statement for the 2021 Annual Meeting of Stockholders of the Registrant ( Part III ) .