EXHIBIT 99.1 OCTOBER 30, 2024 NEWS FOR IMMEDIATE RELEASE CONTACT: ERIC J. DOSCH, CFO 985.375.0308 First Guaranty Bancshares, Inc. Announces Third Quarter 2024 Financial Results Hammond, Louisiana, October 30, 2024 – First Guaranty Bancshares, Inc. ("First Guaranty") (NASDAQ: FGBI), the holding company for First Guaranty Bank, announced its unaudited financial results for the third quarter and nine months ending September 30, 2024. Financial Highlights for the third quarter and nine months ended September 30 ...