Exhibit 99.1 SIMILARWEB ANNOUNCES THIRD QUARTER 2023 RESULTS Achieved company record gross profit and gross margin Achieved Non-GAAP operating profit for the first time TEL AVIV, ISRAEL -- November 7, 2023 -- Similarweb Ltd. (NYSE: SMWB) ("Similarweb" or the "Company"), a leading digital data and analytics company powering critical business decisions, today announced financial results for its third quarter ended September 30, 2023. The Company published a letter to shareholders from management discussing th ...