EXHIBIT 99.1 J.JILL, INC. ANNOUNCES FOURTH QUARTER AND FULL YEAR 2023 RESULTS Q4 FY23 Net Sales of $149.4 Million and FY23 Net Sales of$604.7 Million Delivers Strong Gross Margin of 67.3% for Q4 FY23 and 70.7% for FY23 Operating Model Drives Operating Income Margin Expansion of 170bps for Q4 FY23 and 140bps for FY23 Quincy, MA – March 20, 2024 – J.Jill, Inc. (NYSE:JILL) today announced financial results for the fourth quarter and fiscal year ended February 3, 2024. Claire Spofford, President and Chief Exec ...