EXHIBIT 99.1 J.JILL, INC. ANNOUNCES THIRD QUARTER 2025 RESULTS Q3 FY25 Net Sales of $150.5 Million Q3 FY25 Gross Margin of 70.9% Provides Q4 and Full Year FY25 Outlook Quincy, Mass – December 10, 2025 – J.Jill, Inc. (NYSE:JILL) ("J.Jill" or the "Company") today announced financial results for the third quarter of fiscal year 2025. Mary Ellen Coyne, Chief Executive Officer and President of J.Jill, Inc., commented, "In the third quarter we delivered better than expected earnings results with topline at the hi ...