SCHEDULE 13G/A

1stdibs.com Inc

Common Stock, $0.01 par value per share · CUSIP: 320551104

Event date: 2025-09-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• David S. Rosenblatt

  Shares: 4,017,563.00 · Class: 10.4%

• Bessemer Trust Company of Delaware, N.A., as Trustee of the 2024 Laura Thalheimer Rosenblatt Family Trust u/a/d April 1, 2024

  Shares: 22,500.00 · Class: 0.1%

• 2012 David Rosenblatt Family Trust dated November 30, 2012

  Shares: 665,302.00 · Class: 1.8%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.