Exhibit 99.1 1stDibs Reports Fourth Quarter and Full Year 2023 Financial Results New York, NY — February 28, 2024 — 1stdibs.com, Inc. (NASDAQ: DIBS), a leading online marketplace for luxury design products ("1stDibs" or the "Company"), today reported financial results for its fourth quarter and year ended December 31, 2023. Fourth Quarter 2023 Financial Highlights • Net revenue was $20.9 million, a decrease of 9% year-over-year. • Gross profit was $15.0 million, a decrease of 8% year-over-year. • Gross marg ...