1stdibs.com, Inc.

DIBS· Nasdaq

Since Oct 4, 2025

Transactions: 13
Purchases: 3
Sales: 10
Purchase value: $214.13K
Sale value: $3.78M

Values are shares multiplied by reported price when both were supplied, each trade counted once however many filers reported it.

Rosenblatt David SDirector · Chief Executive Officer

Filed May 13, 2026Period of report May 12, 20260001237860-26-000008

Transaction	Security	Shares	Price	ValueValue (shares × price)	Held after	Ownership
PurchaseMay 12, 2026	Common Stock	43,755	$4.5105	$197.36K	709,057	IndirectBy 2012 David Rosenblatt Family Trust dtd 11/30/2012
PurchaseMay 12, 2026	Common Stock	3,425	$4.4916	$15.38K	712,482	IndirectBy 2012 David Rosenblatt Family Trust dtd 11/30/2012
Purchase

Open on SEC EDGAR

Goins Melanie FGeneral Counsel and CPO

4Rule 10b5-1 plan disclosed

Filed Mar 17, 2026Period of report Mar 13, 20260001775877-26-000004

Transaction	Security	Shares	Price	ValueValue (shares × price)	Held after	Ownership
Sale

Goins Melanie FGeneral Counsel and CPO

4Rule 10b5-1 plan disclosed

Filed Mar 11, 2026Period of report Mar 9, 20260001775877-26-000002

Transaction	Security	Shares	Price	ValueValue (shares × price)	Held after	Ownership
Sale

Goins Melanie FGeneral Counsel and CPO

Filed Dec 10, 2025Period of report Dec 8, 20250001775877-25-000003

Transaction	Security	Shares	Price	ValueValue (shares × price)	Held after	Ownership
SaleDec 8, 2025	Common Stock^F2	11,296	$5.96	$67.32K	213,068	Direct

Etergino Thomas JChief Financial Officer

Filed Dec 10, 2025Period of report Dec 8, 20250001336088-25-000004

Transaction	Security	Shares	Price	ValueValue (shares × price)	Held after	Ownership
SaleDec 8, 2025	Common Stock^F2	27,066	$5.96	$161.31K	266,885	Direct

Rosenblatt David SDirector · Chief Executive Officer

Filed Dec 10, 2025Period of report Dec 8, 20250001237860-25-000009

Transaction	Security	Shares	Price	ValueValue (shares × price)	Held after	Ownership
SaleDec 8, 2025	Common Stock^F2	73,207	$5.96	$436.31K	1,976,786	Direct

Rosenblatt David SDirector · Chief Executive Officer

Filed Nov 26, 2025Period of report Nov 24, 20250001237860-25-000007

Transaction	Security	Shares	Price	ValueValue (shares × price)	Held after	Ownership
SaleNov 24, 2025	Common Stock^F1	595,071	$5.09	$3.03M	1,917,493	Direct

P and S transaction codes only. Grants, gifts, option exercises, tax withholding, and Form 144 notices are not counted as purchases or sales. A row whose filed price fails a plausibility check, or that is not common stock, is listed but left out of the values; a trade reported by several filers is counted once.

Filing footnotes · 9

F1Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.
F2These shares were retained by Issuer via settlement on a net withholding basis in order to meet the tax withholding obligations of the reporting person in connection with the vesting of an installment of restricted stock units ("RSUs") granted to the reporting person on March 15, 2022, March 14, 2023, March 15, 2024 and March 13, 2025. None of these shares were sold in an open market transaction.
F3This transaction was effected pursuant to a Rule 10b5-1 trading plan, adopted December 9, 2025.
F4The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.50 to $5.52, inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F5The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.50 to $5.56, inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F6The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.
F7The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.
F8The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.
F9The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2025, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.