Insider Transaction Report for Thomas J Etergino

On September 8, 2026, Thomas J Etergino, Chief Financial Officer of 1stdibs.com, Inc., reported several transactions involving the company's common stock and restricted stock units (RSUs). Etergino acquired a total of 34,472 shares of common stock through the net withholding of shares for tax purposes related to the vesting of RSUs. These RSUs were granted on March 15, 2024, March 13, 2025, and March 13, 2026, and vest in installments. In a separate transaction, Etergino disposed of 17,599 shares of common stock at a price of $4.73 per share, also for tax withholding purposes. Following these transactions, Etergino directly holds 350,293 shares of common stock. The RSUs reported represent contingent rights to receive shares of common stock upon vesting, with no expiration date. All transactions were reported on Form 4.