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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K x 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 number 001-11001 Frontier COMMUNICATIONS FRONTIER COMMUNICATIONS CORPORATION ( Exact name of registrant as specified in its charter ) Delaware ( State or other jurisdiction of incorporation or organization ) 401 Merritt 7 Norwalk , Connecticut ( Address of principal executive offices ) 06-0619596 ( I.R.S. Employer Identification No. ) 06851 ( Zip Code ) Registrant's telephone number , including area code : ( 203 ) 614-5600 Securities registered pursuant to Section 12 ( g ) of the Act : Common Stock , par value $ 0.25 per share Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No X Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Act . Yes No X 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 ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes X No 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 during the preceding 12 months ( or for such shorter period that the registrant was required to submit and post such files ) . Yes X No 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 _X_ 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 an emerging growth company . See definition of " accelerated filer , ” “ large accelerated filer ” , “ smaller reporting company ” , and “ emerging growth company " in Rule 12b - 2 of the Exchange Act . ( Check one ) : Large Accelerated Filer o Accelerated Filer o Non - Accelerated Filer x Smaller Reporting Company x Emerging Growth Company o 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 . o Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes No X The aggregate market value of common stock held by non - affiliates of the registrant on June 30 , 2020 was $ 10.5 million based on the closing price of $ 0.10 per share on June 30 , 2020. The number of shares outstanding of the registrant's common stock as of February 26 , 2021 was 104,779,000 . DOCUMENT INCORPORATED BY REFERENCE Items 10 , 11 , 12 , 13 and 14 of Part III will be incorporated by reference from a Form 10K / A to be filed with the Securities and Exchange Commission .