David S. Rosenblatt - 24 Nov 2025 Form 4 Insider Report for 1stdibs.com, Inc. (DIBS)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: DIBS
Reported as of: 24 Nov 2025
Net transaction value: -$448,914
SEC form: 4
Accepted by SEC: 26 Nov 2025, 21:12:43 UTC
Prior SEC filing: 10 Sep 2025
Next SEC filing: 10 Dec 2025
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 26 Nov 2025.

Key facts

This page summarizes David S. Rosenblatt's Form 4 filing for 1stdibs.com, Inc. (DIBS).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 26 Nov 2025, 21:12.

Change

Previous filing in this sequence was filed on 10 Sep 2025.
Current net transaction value: -$448,914.

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: 26 Nov 2025

Reported non-derivative transactions

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

DIBS transaction

Common Stock

Options Exercise

Transaction value: $2,579,997
Shares: +666,666
Change %: +36%
Price: $3.87
Shares after: 2,512,564
Date: 24 Nov 2025
Ownership: Direct

DIBS transaction

Common Stock

Sale

Transaction value: $3,028,911
Shares: -595,071
Change %: -24%
Price: $5.09
Shares after: 1,917,493
Date: 24 Nov 2025
Ownership: Direct
Footnotes: F1

DIBS holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 22,500
Date: 24 Nov 2025
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: 665,302
Date: 24 Nov 2025
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

Employee Stock Option (right to buy)

Options Exercise

Transaction value: $0
Shares: -666,666
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 24 Nov 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 666,666
Exercise price: $3.87
Footnotes: F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The transactions reported herein represent a net exercise of outstanding stock options. The reporting person received 666,666 shares of common stock on a net exercise of an option to purchase 666,666 shares of common stock. The Issuer withheld 595,071 shares of common stock underlying the option for payment of the aggregate exercise price of $2,579,997.42 and to meet the tax withholding obligations of the reporting person, using the stock price on November 24, 2025 of $5.09, pursuant to the terms of the 2011 Stock Option and Grant Plan.

Footnote F2

Option vests over four years with 1/48th of the shares vesting on each monthly anniversary of November 1, 2015, subject to the reporting person's continued service with the Issuer through the applicable vesting date.