1stdibs.com, Inc. — Director's Dealing 2023

Dec 13, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 1stdibs.com, Inc. (DIBS)
CIK: 0001600641
Period of Report: 2023-12-08

Reporting Person: Etergino Thomas J (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-12-08	Common Stock	M	30667	—	Acquired	100166	Direct
2023-12-08	Common Stock	F	11056	$4.74	Disposed	89110	Direct
2023-12-12	Common Stock	S	3550	$4.5114	Disposed	85560	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-12-08	Restricted Stock Units	$	M	14104	Disposed		Common Stock (14104)	Direct
2023-12-08	Restricted Stock Units	$	M	16563	Disposed		Common Stock (16563)	Direct

Footnotes

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 June 2, 2022 and March 14, 2023. None of these shares were sold in an open market transaction.

F3: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan, adopted September 11, 2023.

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: Twenty-five percent (25%) of the restricted stock units shall vest on June 8, 2023, 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 September 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.