Matthew Rubinger - 10 Mar 2025 Form 4 Insider Report for 1stdibs.com, Inc. (DIBS)

Role: Chief Commercial Officer
Signature: /s/ Melanie Goins, Attorney-In-Fact for Matthew Rubinger
Issuer symbol: DIBS
Transactions as of: 10 Mar 2025
Net transactions value: -$25,680
Form type: 4
Filing time: 12 Mar 2025, 20:57:57 UTC
Previous filing: 12 Mar 2025
Next filing: 17 Mar 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DIBS	Common Stock	Options Exercise		+2,904	+11%		28,934	10 Mar 2025	Direct	F1
transaction	DIBS	Common Stock	Options Exercise		+9,204	+32%		38,138	10 Mar 2025	Direct	F1
transaction	DIBS	Common Stock	Options Exercise		+9,088	+24%		47,226	10 Mar 2025	Direct	F1
transaction	DIBS	Common Stock	Tax liability	$25,680	-7,643	-16%	$3.36	39,583	10 Mar 2025	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	DIBS	Restricted Stock Units	Options Exercise	$0	-2,904	-25%	$0.000000	8,713	10 Mar 2025	Common Stock	2,904		Direct	F1, F3
transaction	DIBS	Restricted Stock Units	Options Exercise	$0	-9,204	-20%	$0.000000	36,819	10 Mar 2025	Common Stock	9,204		Direct	F1, F4
transaction	DIBS	Restricted Stock Units	Options Exercise	$0	-9,088	-11%	$0.000000	72,700	10 Mar 2025	Common Stock	9,088		Direct	F1, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.
F2	These shares were retained by 1stdibs, Inc. ("1stdibs") 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 December 9, 2021, March 14, 2023, and March 15, 2024. None of these shares were sold in an open market transaction.
F3	Twenty-five percent (25%) of the restricted stock units shall vest on December 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, the remaining seventy-five percent (75%) of the restricted stock units shall vest in 12 equal quarterly installments starting on March 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.
F4	The 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.
F5	The 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.