1stdibs (DIBS) CEO David Rosenblatt Vests 174,167 RSUs

What Happened
David S. Rosenblatt, CEO of 1stdibs.com, had multiple restricted stock unit (RSU) installments vest on 2026-09-08, resulting in the conversion/settlement of 174,167 RSUs into common shares. To satisfy tax withholding obligations, 96,229 of those shares were retained by the company at $4.73 per share for a withholding value of $455,163. After withholding, Rosenblatt received approximately 77,938 net shares. No shares were sold in an open-market transaction.

Key Details

• Transaction date: September 8, 2026; Form 4 filed September 10, 2026 (filed timely).
• Vesting/derivative code: M = exercise/conversion of derivative (here, RSU vesting); F = shares retained to cover tax withholding.
• Shares vested/converted: 174,167 total (sum of 37,500; 47,500; 47,500; 41,667).
• Shares withheld for taxes: 96,229 @ $4.73 = $455,163 (net settlement; no open-market sale).
• Net shares delivered to Rosenblatt: ~77,938.
• Footnotes: Vesting relates to RSU grants from 2023–2026 with quarterly installment schedules; restricted stock units have no expiration date. None of the withheld shares were sold on the open market.

Context
This was a routine RSU vesting and net-share settlement to cover taxes (similar to a cashless/net withholding), not an open-market sale or discretionary purchase; such transactions typically reflect compensation vesting rather than a trading signal. The filing appears timely under Form 4 rules. For full ownership totals and grant details, consult the complete Form 4 filing (Accession: 0001237860-26-000018).