Page 1

( Mark One ) ✓ ☐ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period 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 Indiana ( State or Other Jurisdiction of Incorporation or Organization ) 11201 USA Parkway Fishers , IN Commission File Number 001-35750 First Internet Bancorp ( Exact Name of Registrant as Specified in Its Charter ) 20-3489991 ( I.R.S. Employer Identification No. ) ( Address of Principal Executive Offices ) ( Registrant's Telephone Number , Including Area Code ) 46037 ( Zip Code ) ( 317 ) 532-7900 Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Trading Symbols Name of each exchange on which registered Common Stock , without par value INBK The Nasdaq Stock Market LLC Notes due 2029 INBKZ The Nasdaq Stock Market LLC 6.0 % Fixed to Floating Subordinated 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 þ 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 during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes þ 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 the definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large Accelerated Filer " Non - accelerated Filer " Emerging growth company ☐ Accelerated Filer þ 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 is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes □ No þ As of November 5 , 2021 , the registrant had 9,854,153 shares of common stock issued and outstanding .