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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 0 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from 150 Third Avenue South , Suite 900 , Commission File Number : 000-31225 Pinnacle ™ FINANCIAL PARTNERS Tennessee ( State or other jurisdiction of incorporation ) Title of Each Class Common Stock , par value $ 1.00 Depositary Shares ( each representing 1 / 40th interest in a share of 6.75 % Fixed - Rate Non - Cumulative Perpetual Preferred Stock , Series B ) Nashville , ( Address of principal executive offices ) Inc. ( Exact name of registrant as specified in charter ) Trading Symbol TN PNFP Registrant's telephone number , including area code : ( 615 ) 744-3700 Securities registered pursuant to Section 12 ( b ) of the Act : PNFPP to Large Accelerated Filer > Non - accelerated Filer ( do not check if you are a smaller reporting company ) 2 Accelerated Filer Smaller reporting company 62-1812853 ( I.R.S. Employer Identification No. ) 37201 ( Zip Code ) Name of Exchange on which Registered The Nasdaq Stock Market LLC Securities registered 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 x No o 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 o 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 o Indicate by check mark whether the registrant has submitted electronically , if any , 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 x No 0 The Nasdaq Stock Market LLC 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 " accelerated filer , " " large accelerated filer " and " smaller reporting company " in Rule 12b - 2 of the Exchange Act . ( Check one ) : Emerging growth company