1stdibs CFO Thomas Etergino Receives Shares via RSU Vesting

What Happened
Thomas J. Etergino, Chief Financial Officer of 1stdibs.com, Inc. (DIBS), had restricted stock units (RSUs) convert into 34,472 shares of common stock on September 8, 2026. To satisfy tax withholding obligations, 17,599 of those shares were retained by the company at an effective withholding value of $4.73/share, totaling $83,243. No shares were sold in an open-market transaction; the activity reflects vesting/settlement of RSUs rather than a purchase or market sale.

Key Details

• Transaction date: September 8, 2026. Form filed Sep 10, 2026 (timely under standard Form 4 rules). Accession: 0001336088-26-000009.
• Reported transactions: conversion/exercise of RSU-type derivatives totaling 34,472 shares (12,125; 11,172; 11,175).
• Tax withholding: 17,599 shares withheld at $4.73/share for $83,243 (transaction code F = tax withholding). Net shares retained by insider: 16,873.
• Transaction codes: M = exercise/conversion of derivative (RSU settlement); F = shares withheld to pay taxes. None of the withheld shares were sold in the open market.
• Shares owned after transaction: not specified in the filing.
• Notable footnotes: F1–F5 indicate these were RSUs (1 RSU = 1 share) from grants made March 15, 2024; March 13, 2025; and March 13, 2026, with quarterly vesting schedules (some grants vesting in 12 or 16 quarterly installments). RSUs have no expiration date.

Context
This was a routine settlement of vested RSUs with net-share withholding to cover taxes (a common cashless method). Because no open-market sale occurred, this filing does not signal a disposition-driven market action by the insider. For retail investors, such filings mainly reflect compensation vesting and tax payment mechanics rather than directional insider buying/selling intent.