Thomas J. Etergino - 09 Mar 2026 Form 4 Insider Report for 1stdibs.com, Inc. (DIBS)

Role
Chief Financial Officer
Signature
/s/ Melanie Goins, Attorney-In-Fact for Thomas J Etergino
Issuer symbol
DIBS
Transactions as of
09 Mar 2026
Net transactions value
$0
Form type
4
Filing time
11 Mar 2026, 20:05:39 UTC
Previous filing
10 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Etergino Thomas J Chief Financial Officer 300 PARK AVENUE SOUTH, 10TH FLOOR, NEW YORK /s/ Melanie Goins, Attorney-In-Fact for Thomas J Etergino 11 Mar 2026 0001336088

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DIBS Common Stock Options Exercise +14,104 +5.3% 280,989 09 Mar 2026 Direct F1
transaction DIBS Common Stock Options Exercise +16,562 +5.9% 297,551 09 Mar 2026 Direct F1
transaction DIBS Common Stock Options Exercise +11,175 +3.8% 308,726 09 Mar 2026 Direct F1
transaction DIBS Common Stock Options Exercise +11,172 +3.6% 319,898 09 Mar 2026 Direct F1
transaction DIBS Common Stock Tax liability -19,113 -6% $5.49* 300,785 09 Mar 2026 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 -14,104 -100% $0.000000* 0 09 Mar 2026 Common Stock 14,104 Direct F1, F3
transaction DIBS Restricted Stock Units Options Exercise -16,562 -50% $0.000000* 16,563 09 Mar 2026 Common Stock 16,562 Direct F1, F4
transaction DIBS Restricted Stock Units Options Exercise -11,175 -11% $0.000000* 89,400 09 Mar 2026 Common Stock 11,175 Direct F1, F5
transaction DIBS Restricted Stock Units Options Exercise -11,172 -7.7% $0.000000* 134,063 09 Mar 2026 Common Stock 11,172 Direct F1, F6
* 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 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 June 2, 2022, March 14, 2023, and March 15, 2025. None of these shares were sold in an open market transaction.
F3 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.
F4 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.
F5 The initial number of restricted stock units granted shall vest in 16 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.
F6 The initial number of restricted stock units granted shall vest in 16 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.