Exhibit 99.1 April 29, 2024 FOR IMMEDIATE RELEASE HEARTLAND FINANCIAL USA, INC. (“HTLF”) REPORTS QUARTERLY RESULTS AS OF MARCH 31, 2024 First Quarter Highlights ◾Quarterly net income available to common stockholders of $49.7 million or$1.16 per common share ◾ Adjusted earnings available to common stockholders of $52.4 million or$1.22 adjusted diluted earnings per common share, which excludes $1.4 million of acquisition, integration and restructuring costs and$2.0 million of FDIC special assessment expens ...