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Rosenblatt David S's Form 4 filing

1stdibs.com, Inc. (DIBS) · filed Sep 10, 2026

Accession no.
0001237860-26-000018
Filed
Sep 10, 2026, 6:14 PM ET
Trade date
Sep 8, 2026
Filing delay
2 days
Rule 10b5-1 plan
Not checked

This filing lists 5 non-derivative transactions and 4 derivative transactions. It was filed 2 days after the trade.

Reporting owners

A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.

Reporting owners on this filing
OwnerRelationship to the company
Rosenblatt David SCIK 0001237860Director, Officer (Chief Executive Officer)

Non-derivative securities (Table I)

Acquisitions and disposals of common stock and similar shares, one row per line on the filing.

Non-derivative transactions
Trade dateSecurityTransactionSharesPriceValueShares afterOwnershipFlags
Sep 8, 2026Common StockMOption exerciseAcquired+37,500–F1–2,162,636Direct
Sep 8, 2026Common StockMOption exerciseAcquired+47,500–F1–2,210,136Direct
Sep 8, 2026Common StockMOption exerciseAcquired+47,500–F1–2,257,636Direct
Sep 8, 2026Common StockMOption exerciseAcquired+41,667–F1–2,299,303Direct
Sep 8, 2026Common StockFTax withholdingDisposed−96,229$4.73F2−$455,163.172,203,074Direct

Derivative securities (Table II)

Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.

Derivative transactions
Trade dateSecurityTransactionUnderlying sharesUnit priceValueHeld afterOwnershipFlags
Sep 8, 2026Common StockMOption exerciseDisposed−37,500$0.00$075,000Direct
Sep 8, 2026Common StockMOption exerciseDisposed−47,500$0.00$0285,000Direct
Sep 8, 2026Common StockMOption exerciseDisposed−47,500$0.00$0475,000Direct
Sep 8, 2026Common StockMOption exerciseDisposed−41,667$0.00$0416,667Direct

Footnotes and remarks

Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.

F1

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

Referenced by the price of 4 transactions in Table I.

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.

Referenced by the price of 1 transaction in Table I.

Read the full filing on SEC EDGAR (opens in a new tab)