1stdibs.com, Inc. — Director's Dealing 2024

May 15, 2024

xml version="1.0" encoding="UTF-8"? 144 0001629399 XXXXXXXX LIVE 0001600641 1stdibs.com, Inc. 001-40453 300 PARK AVENUE SOUTH 10TH FLOOR NEW YORK NY 10010 212-627-3929 Insight Venture Partners (Cayman) IX, L.P. 10% Stockholder common RAYMOND JAMES & ASSOC. 880 CARILLON PKWY ST. PETERSBURG FL 33716 12314 112872.00 39768932 05/15/2024 NASDAQ COMMON 06/16/2015 Purchase - reflects 1:3 stock split Michael J. Bruno II N 1550668 06/16/2015 WIRED TO SELLER N Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/14/2024 370 11944.50 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/14/2024 1963 56026.62 Insight Venture Partners (Cayman) IX, L.P. 1114 AVENUE OF THE AMERICAS 36TH FL NEW YORK NY 10036 COMMON 03/14/2024 9204 112753.22 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/14/2024 18522 182970.89 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/15/2024 178 5662.66 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/15/2024 943 26575.80 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/15/2024 4422 53482.16 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/15/2024 8898 86784.67 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/18/2024 218 6896.58 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/18/2024 1156 32375.06 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/18/2024 5423 65156.13 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/18/2024 10913 105723.50 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/19/2024 108 3404.80 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/19/2024 572 15974.49 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/19/2024 2680 32157.67 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/19/2024 5394 52174.99 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/20/2024 714 22629.35 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/20/2024 3789 106145.20 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/20/2024 17769 213622.56 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/20/2024 35760 346656.56 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/21/2024 396 12580.93 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/21/2024 2102 59024.26 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/21/2024 9858 118802.98 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/21/2024 19841 192773.49 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/22/2024 293 9555.66 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/22/2024 1557 44835.99 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/22/2024 7302 90236.78 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/22/2024 14695 146421.80 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/25/2024 396 12630.11 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/25/2024 2102 59248.93 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/25/2024 9857 119249.22 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/25/2024 19838 193502.84 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/26/2024 611 19648.53 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/26/2024 3245 92167.20 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/26/2024 15218 185497.23 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/26/2024 30627 301007.75 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/27/2024 412 13093.79 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/27/2024 2189 61417.43 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/27/2024 10264 123612.80 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/27/2024 20657 200583.62 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/28/2024 1163 36834.62 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/28/2024 6171 172806.24 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/28/2024 28947 347821.35 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/28/2024 58263 564399.31 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/28/2024 185 5847.13 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/28/2024 979 27431.92 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/28/2024 4593 55204.29 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 03/28/2024 9243 89588.26 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/01/2024 79 2495.25 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/01/2024 420 11713.98 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/01/2024 1968 23576.84 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/01/2024 3960 38250.58 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/02/2024 132 4179.75 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/02/2024 701 19620.90 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/02/2024 3287 39492.56 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/02/2024 6615 64075.44 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/03/2024 41 1291.76 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/03/2024 218 6071.91 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/03/2024 1021 12215.25 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/03/2024 2053 19817.03 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/04/2024 23 702.20 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/04/2024 119 3326.47 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/04/2024 560 6706.49 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/04/2024 1128 10866.07 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/15/2024 434 11531.79 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/15/2024 2306 54090.37 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/15/2024 10812 108872.16 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/15/2024 21761 176659.83 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/16/2024 331 8708.76 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/16/2024 1759 40862.56 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/16/2024 8249 82251.28 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/16/2024 16603 133456.54 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/17/2024 559 14680.76 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/17/2024 2965 68880.42 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/17/2024 13907 138633.60 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 04/17/2024 27989 224957.75 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/08/2024 216 6646.00 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/08/2024 1144 31197.00 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/08/2024 5366 62784.00 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/08/2024 10798 101877.00 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/09/2024 402 12656.00 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/09/2024 2133 59382.00 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/09/2024 10004 119519.00 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/09/2024 20134 193938.00 Insight Venture Partners IX (Co-Investors), L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/10/2024 138 4362.00 Insight Venture Partners (Delaware) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/10/2024 734 20478.00 Insight Venture Partners (Cayman) IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/10/2024 3442 41230.00 Insight Venture Partners IX, L.P. 1114 Avenue of the Americas, 36th Floor NEW YORK NY 10036 COMMON 05/10/2024 6929 66885.00 05/15/2024 MOHAMMED ALSHATRI, as duly authorized representative of Raymond James & Associates, Inc., as attorney-in-fact for Insight Venture Partners (Cayman) IX