United States securities and exchange commission logo December 21, 2023 Bryan R. McKeag Chief Financial Officer Heartland Financial USA, Inc. 1800 Larimer Street Suite 1800 Denver, Colorado 80202 Re: Heartland Financial USA, Inc. Form 10-Q for Quarterly Period Ended June 30, 2023 Response dated November 9, 2023 File No. 001-15393 Dear Bryan R. McKeag: We have reviewed your November 9, 2023 response to our comment letter and have the following comment. Please respond to this letter within ten business days by providing the requested information or advise us as soon as possible when you will respond. If you do not believe the comment applies to your facts and circumstances, please tell us why in your response. After reviewing your response to this letter, we may have additional comments. Unless we note otherwise, any references to prior comments are to comments in our October 4, 2023 letter. Form 10-Q for Quarterly Period Ended June 30, 2023 Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations Non-GAAP Reconciliations 1. We note your response to prior comment 1. Your presentation of adjusted tangible common equity ( Adjusted TCE ), which excludes the impact of accumulated other comprehensive income (loss) ( AOCI ) represents an individually tailored accounting measure given that the adjustment to exclude accumulated other comprehensive income (loss) has the effect of changing the recognition and measurement principles required to be applied in accordance with GAAP. Therefore, please remove the presentation of this non-GAAP measure from your future filings. Refer to Question 100.04 of the Division of Corporation Finance s Compliance & Disclosure Interpretations on Non-GAAP Financial Measures and Rule 100(b) of Regulation G. Bryan R. McKeag Heartland Financial USA, Inc. December 21, 2023 Page 2 Please contact Michael Henderson at 202-551-3364 or Robert Klein at 202-551-3847 if you have questions regarding comments on the financial statements and related matters. FirstName LastNameBryan R. McKeag Sincerely, Comapany NameHeartland Financial USA, Inc. Division of Corporation Finance December 21, 2023 Page 2 Office of Finance FirstName LastName