1stdibs.com, Inc.

No buy/sell activity

Date	Name	Title	Shares	Value	Transaction
Sep 8, 2026	ROSENBLATT DAVID S	Chief Executive Officer	96,229Common Stock	—	Tax withholding
Sep 8, 2026	ROSENBLATT DAVID S	Chief Executive Officer	126,667Common Stock	—	Exercise / conversion
Sep 8, 2026	Etergino Thomas J	Chief Financial Officer	17,599Common Stock	—	Tax withholding
Sep 8, 2026	Etergino Thomas J	Chief Financial Officer	34,472Common Stock	—	Exercise / conversion
Sep 8, 2026	Goins Melanie F	General Counsel and CPO	8,970Common Stock	—	Tax withholding
Sep 8, 2026	Goins Melanie F	General Counsel and CPO	30,557Common Stock	—	Exercise / conversion
Jun 8, 2026	HICKOK LORI A	Director	40,926Common Stock	—	Exercise / conversion
Jun 8, 2026	ROSENBLATT DAVID S	Chief Executive Officer	96,228Common Stock	—	Tax withholding
Jun 8, 2026	ROSENBLATT DAVID S	Chief Executive Officer	126,666Common Stock	—	Exercise / conversion
Jun 8, 2026	Etergino Thomas J	Chief Financial Officer	18,400Common Stock	—	Tax withholding