SCHEDULE 13G/A 0001600641-23-000004 0001237860 XXXXXXXX LIVE 2 Common Stock, $0.01 par value per share 09/30/2024 0001600641 1stdibs.com, Inc. 320551104 300 PARK AVENUE SOUTH 10TH FLOOR NEW YORK NY 10010 Rule 13d-1(d) David S. Rosenblatt b X1 3522908.00 0.00 3522908.00 0.00 3522908.00 Y 9.1 IN 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 b MD 22500.00 0.00 22500.00 0.00 22500.00 N 0.1 OO 2012 David Rosenblatt Family Trust dated November 30, 2012 b NY 665302.00 0.00 665302.00 0.00 665302.00 N 1.8 OO 1stdibs.com, Inc. 300 PARK AVENUE SOUTH, 10TH FLOOR, NEW YORK, NY, 10010 David S. Rosenblatt 2012 David Rosenblatt Family Trust dated November 30, 2012 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 c/o 1stdibs.com, Inc. 300 Park Avenue South 10th Floor New York, New York 10010 David S. Rosenblatt is a citizen of the United States of America. The 2012 David Rosenblatt Family Trust dated November 30, 2012 is formed under the laws of the State of New York. The 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 is formed under the laws of the State of Maryland. Y The responses to questions 5 through 9 and 11 on the cover pages are incorporated by reference into this Item 4. David S. Rosenblatt has no voting or dispositive power over shares of Common Stock held by the 2012 David Rosenblatt Family Trust dated November 30, 2012 or the 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 (collectively, the "Trusts"). Mr Rosenblatt disclaims beneficial ownership of the shares of Common Stock held by the Trusts, except to the extent of his pecuniary interest therein. The filing of this Amendment No. 2 to Schedule 13G (this "Amendment") shall not be deemed an admission that Mr. Rosenblatt is, for purposes of Section 13(g) of the Securities Exchange Act of 1934, as amended, or otherwise, the beneficial owner of any equity securities held by the Trusts and covered by this Amendment. The responses to questions 5 through 9 and 11 on the cover pages are incorporated by reference into this Item 4. David S. Rosenblatt has no voting or dispositive power over shares of Common Stock held by the 2012 David Rosenblatt Family Trust dated November 30, 2012 or the 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 (collectively, the "Trusts"). Mr Rosenblatt disclaims beneficial ownership of the shares of Common Stock held by the Trusts, except to the extent of his pecuniary interest therein. The filing of this Amendment shall not be deemed an admission that Mr. Rosenblatt is, for purposes of Section 13(g) of the Securities Exchange Act of 1934, as amended, or otherwise, the beneficial owner of any equity securities held by the Trusts and covered by this Amendment. The responses to questions 5 through 9 and 11 on the cover pages are incorporated by reference into this Item 4. David S. Rosenblatt has no voting or dispositive power over shares of Common Stock held by the 2012 David Rosenblatt Family Trust dated November 30, 2012 or the 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 (collectively, the "Trusts"). Mr Rosenblatt disclaims beneficial ownership of the shares of Common Stock held by the Trusts, except to the extent of his pecuniary interest therein. The filing of this Amendment shall not be deemed an admission that Mr. Rosenblatt is, for purposes of Section 13(g) of the Securities Exchange Act of 1934, as amended, or otherwise, the beneficial owner of any equity securities held by the Trusts and covered by this Amendment. The responses to questions 5 through 9 and 11 on the cover pages are incorporated by reference into this Item 4. David S. Rosenblatt has no voting or dispositive power over shares of Common Stock held by the 2012 David Rosenblatt Family Trust dated November 30, 2012 or the 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 (collectively, the "Trusts"). Mr Rosenblatt disclaims beneficial ownership of the shares of Common Stock held by the Trusts, except to the extent of his pecuniary interest therein. The filing of this Amendment shall not be deemed an admission that Mr. Rosenblatt is, for purposes of Section 13(g) of the Securities Exchange Act of 1934, as amended, or otherwise, the beneficial owner of any equity securities held by the Trusts and covered by this Amendment. The responses to questions 5 through 9 and 11 on the cover pages are incorporated by reference into this Item 4. David S. Rosenblatt has no voting or dispositive power over shares of Common Stock held by the 2012 David Rosenblatt Family Trust dated November 30, 2012 or the 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 (collectively, the "Trusts"). Mr Rosenblatt disclaims beneficial ownership of the shares of Common Stock held by the Trusts, except to the extent of his pecuniary interest therein. The filing of this Amendment shall not be deemed an admission that Mr. Rosenblatt is, for purposes of Section 13(g) of the Securities Exchange Act of 1934, as amended, or otherwise, the beneficial owner of any equity securities held by the Trusts and covered by this Amendment. The responses to questions 5 through 9 and 11 on the cover pages are incorporated by reference into this Item 4. David S. Rosenblatt has no voting or dispositive power over shares of Common Stock held by the 2012 David Rosenblatt Family Trust dated November 30, 2012 or the 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 (collectively, the "Trusts"). Mr Rosenblatt disclaims beneficial ownership of the shares of Common Stock held by the Trusts, except to the extent of his pecuniary interest therein. The filing of this Amendment shall not be deemed an admission that Mr. Rosenblatt is, for purposes of Section 13(g) of the Securities Exchange Act of 1934, as amended, or otherwise, the beneficial owner of any equity securities held by the Trusts and covered by this Amendment. Y N N Not applicable. N Not applicable. N Not applicable. N Not applicable. N David S. Rosenblatt David S. Rosenblatt 11/14/2024 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 2012 Laura T. Rosenblatt Family Trust dated December 4, 2012 11/14/2024 2012 David Rosenblatt Family Trust dated November 30, 2012 2012 David Rosenblatt Family Trust dated November 30, 2012 11/14/2024