Exhibit 99.1 April 25, 2024 For More Information Contact: For Immediate Release Janet Verneuille, SEVP and CFO (516) 671-4900, Ext. 7462 THE FIRST OF LONG ISLAND CORPORATION REPORTS EARNINGS FOR THE FIRST QUARTER OF 2024 Melville, New York, April 25, 2024 (GLOBE NEWSWIRE) – The First of Long Island Corporation (Nasdaq: FLIC, the “Company” or the “Corporation”), the parent of The First National Bank of Long Island (the “Bank”), reported net income and earnings per share for the three months ended March 31, 2 ...