David S. Rosenblatt - 08 Jun 2026 Form 4 Insider Report for 1stdibs.com, Inc. (DIBS)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: DIBS
Reported as of: 08 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 10 Jun 2026, 11:19:54 UTC
Prior SEC filing: 13 May 2026
Next SEC filing: 11 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Melanie Goins, Attorney-In-Fact for David S. Rosenblatt

Key filing fact

David S. Rosenblatt filed Form 4 for 1stdibs.com, Inc. (DIBS) on 10 Jun 2026.

Key facts

This page summarizes David S. Rosenblatt's Form 4 filing for 1stdibs.com, Inc. (DIBS).
9 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 10 Jun 2026, 11:19.

Change

Previous filing in this sequence was filed on 13 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001237860 Primary reporting owner

ROSENBLATT DAVID S

Relationship: Chief Executive Officer, Director
Address: 300 PARK AVENUE SOUTH, 10TH FLOOR, NEW YORK
Signature: /s/ Melanie Goins, Attorney-In-Fact for David S. Rosenblatt
Signature date: 10 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

DIBS transaction

Common Stock

Options Exercise

Transaction value
Shares: +47,500
Change %: +2.3%
Price
Shares after: 2,094,698
Date: 08 Jun 2026
Ownership: Direct
Footnotes: F1

DIBS transaction

Common Stock

Options Exercise

Transaction value
Shares: +47,500
Change %: +2.3%
Price
Shares after: 2,142,198
Date: 08 Jun 2026
Ownership: Direct
Footnotes: F1

DIBS transaction

Common Stock

Options Exercise

Transaction value
Shares: +41,666
Change %: +1.9%
Price
Shares after: 2,183,864
Date: 08 Jun 2026
Ownership: Direct
Footnotes: F1

DIBS transaction

Common Stock

Options Exercise

Transaction value
Shares: +37,500
Change %: +1.7%
Price
Shares after: 2,221,364
Date: 08 Jun 2026
Ownership: Direct
Footnotes: F1

DIBS transaction

Common Stock

Tax liability

Transaction value
Shares: -96,228
Change %: -4.3%
Price: $4.01^*
Shares after: 2,125,136
Date: 08 Jun 2026
Ownership: Direct
Footnotes: F2

DIBS holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 22,500
Date: 08 Jun 2026
Ownership: By 2024 Laura Thalheimer Rosenblatt Family Trust effective 4/1/2024

DIBS holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 712,802
Date: 08 Jun 2026
Ownership: By 2012 David Rosenblatt Family Trust dtd 11/30/2012

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

DIBS transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -47,500
Change %: -12%
Price: $0.000000^*
Shares after: 332,500
Date: 08 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 47,500
Exercise price
Footnotes: F1, F3

DIBS transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -47,500
Change %: -8.3%
Price: $0.000000^*
Shares after: 522,500
Date: 08 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 47,500
Exercise price
Footnotes: F1, F4

DIBS transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -41,666
Change %: -8.3%
Price: $0.000000^*
Shares after: 458,334
Date: 08 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 41,666
Exercise price
Footnotes: F1, F5

DIBS transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -37,500
Change %: -25%
Price: $0.000000^*
Shares after: 112,500
Date: 08 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 37,500
Exercise price
Footnotes: F1, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

Footnote 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 March 15, 2023, March 8, 2024, March 14, 2025 and March 16, 2026. None of these shares were sold in an open market transaction.

Footnote F3

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.

Footnote F4

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.

Footnote F5

The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2026, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

Footnote F6

The initial number of restricted stock units granted shall vest in 16 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.