Ownership & Insider Lab

Look up a company to review current SEC-traceable insider positions, exact reporting-owner relationships across other published companies, a dated chronology of the published ownership evidence, and recent supported insider transactions where transaction history is separately available.
Coverage follows the existing reviewed company dataset and fails closed when a ticker is not currently supported.

1stdibs.com, Inc. (DIBS)

Nasdaq · SEC CIK 0001600641

$10.21MCovered current disclosed holdings
2Covered reporting owners
2Covered direct positions
2Source ownership filings

This is the supported SEC-traceable subset, not total insider ownership or personal wealth. Values reflect the current disclosed positions Grizzly Bulls can resolve and value. Latest source filing: Sep 10, 2026 · values through Sep 25, 2026.

Covered reporting owners

Filter the reporting-owner snapshot by holder, role, or security. Position values are shown only where the current reviewed data supports them.

2 shown
HolderRolePositionCurrent valueLatest filing
David S. RosenblattResearch disclosed relationshipsChief Executive Officer · Director2,203,074 sharesCommon Stock, $0.01 par value per share$8.81MSep 10, 2026
Thomas J. EterginoResearch disclosed relationshipsChief Financial Officer350,293 sharesCommon Stock, $0.01 par value per share$1.4MSep 10, 2026

Reporting-owner research graph

These relationships are joined only when the same single SEC reporting-owner CIK appears unambiguously across the publication-authorized company ownership universe. Name similarity is never used to create a relationship.

This graph is bounded to the company ownership relationships currently published by Grizzly Bulls. It is not a complete employment, board, ownership, portfolio, or wealth history, and a missing relationship does not establish that none exists.

SEC transaction evidence ledger

Each row preserves the reviewed SEC transaction evidence, including the effective-date basis, amendment state, reported post-transaction position when present, and a separately published current covered owner/security position when one can be matched uniquely. Reported price is shown when present. The lab does not calculate gross proceeds, reconstruct balances between filings, or treat historical transactions as current wealth.

9 shown
Effective dateHolderActionSecurityUnitsReported priceReported position after transactionCurrent covered positionFiling
Sep 8, 2026Transaction dateThomas J. EterginoResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share17,599 shares$4.73350,293 shares350,293 sharesOwner coverage latest filing Sep 10, 20264Filed Sep 10, 2026
Sep 8, 2026Transaction dateThomas J. EterginoResearch disclosed relationshipsAcquisitionSEC code MCommon Stock, $0.01 par value per share11,175 sharesNot reported367,892 shares350,293 sharesOwner coverage latest filing Sep 10, 20264Filed Sep 10, 2026
Sep 8, 2026Transaction dateThomas J. EterginoResearch disclosed relationshipsAcquisitionSEC code MCommon Stock, $0.01 par value per share11,172 sharesNot reported356,717 shares350,293 sharesOwner coverage latest filing Sep 10, 20264Filed Sep 10, 2026
Sep 8, 2026Transaction dateThomas J. EterginoResearch disclosed relationshipsAcquisitionSEC code MCommon Stock, $0.01 par value per share12,125 sharesNot reported345,545 shares350,293 sharesOwner coverage latest filing Sep 10, 20264Filed Sep 10, 2026
Sep 8, 2026Transaction dateDavid S. RosenblattResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share96,229 shares$4.732,203,074 shares2,203,074 sharesOwner coverage latest filing Sep 10, 20264Filed Sep 10, 2026
Sep 8, 2026Transaction dateDavid S. RosenblattResearch disclosed relationshipsAcquisitionSEC code MCommon Stock, $0.01 par value per share41,667 sharesNot reported2,299,303 shares2,203,074 sharesOwner coverage latest filing Sep 10, 20264Filed Sep 10, 2026
Sep 8, 2026Transaction dateDavid S. RosenblattResearch disclosed relationshipsAcquisitionSEC code MCommon Stock, $0.01 par value per share47,500 sharesNot reported2,257,636 shares2,203,074 sharesOwner coverage latest filing Sep 10, 20264Filed Sep 10, 2026
Sep 8, 2026Transaction dateDavid S. RosenblattResearch disclosed relationshipsAcquisitionSEC code MCommon Stock, $0.01 par value per share47,500 sharesNot reported2,210,136 shares2,203,074 sharesOwner coverage latest filing Sep 10, 20264Filed Sep 10, 2026
Sep 8, 2026Transaction dateDavid S. RosenblattResearch disclosed relationshipsAcquisitionSEC code MCommon Stock, $0.01 par value per share37,500 sharesNot reported2,162,636 shares2,203,074 sharesOwner coverage latest filing Sep 10, 20264Filed Sep 10, 2026

A reported post-transaction position is the balance stated in that historical transaction filing. A current covered position is a separate latest owner/security observation and may reflect later filings or activity. They are shown side by side as evidence points, not as a reconstructed continuous ledger.

Published 9 of 9 source candidates under the current reviewed security-resolution rules.

Covered securities

SecurityInstrument familyCovered positionsCovered value
Common Stock, $0.01 par value per shareordinary-share2$10.21M

Coverage and interpretation

Current holdings: direct positions that the reviewed ownership data can trace to an exact reporting owner, legal security, and current-basis quantity.

Current value: the existing published company-position valuation. This lab does not recalculate security values or infer missing positions.

Transaction evidence: historical flow observations with filing provenance. Reported post-transaction balances and current covered positions are separate evidence points; the lab does not interpolate ownership between them.

Reporting-owner graph: exact reporting-owner CIK relationships across the published company universe. It does not merge people by name or create a complete personal history.

Not included here: a claim of total insider ownership, total personal wealth, institutional 13F ownership, a transaction-value estimate, an insider sentiment score, or an investment recommendation.

Published ownership evidence chronology

This sequence orders only the ownership evidence already published by Grizzly Bulls for the exact reporting-owner relationships above. Transaction rows are ordered by filing date while preserving the separate economic effective date and its basis. Current covered snapshots remain separate latest observations.

The chronology does not interpolate ownership between entries, infer missing activity, pair an amended filing with an assumed parent, infer amendment supersession, or treat a current covered snapshot as proof of continuous ownership.

David S. Rosenblatt

SEC reporting-owner CIK 0001237860 · 1 published relationship company

SEC owner filings
Evidence dateCompanyObservationSecurity / positionSource
Sep 10, 2026Latest represented filing date1stdibs.com, Inc. (DIBS)NasdaqCurrent covered snapshotChief Executive Officer · DirectorValuation observation Sep 25, 2026Common Stock, $0.01 par value per share: 2,203,074 sharesCurrent covered company value: $8.81MPublished current ownership snapshotForms represented: 4Owner filingsIssuer filings
Sep 10, 2026Filed date1stdibs.com, Inc. (DIBS)NasdaqAcquisitionSEC code MEffective Sep 8, 2026 · transaction dateReported units 37,500 shares · reported price not providedCommon Stock, $0.01 par value per shareReported position after transaction: 2,162,636 shares4 filing0001237860-26-000018
Sep 10, 2026Filed date1stdibs.com, Inc. (DIBS)NasdaqAcquisitionSEC code MEffective Sep 8, 2026 · transaction dateReported units 47,500 shares · reported price not providedCommon Stock, $0.01 par value per shareReported position after transaction: 2,210,136 shares4 filing0001237860-26-000018
Sep 10, 2026Filed date1stdibs.com, Inc. (DIBS)NasdaqAcquisitionSEC code MEffective Sep 8, 2026 · transaction dateReported units 47,500 shares · reported price not providedCommon Stock, $0.01 par value per shareReported position after transaction: 2,257,636 shares4 filing0001237860-26-000018
Sep 10, 2026Filed date1stdibs.com, Inc. (DIBS)NasdaqAcquisitionSEC code MEffective Sep 8, 2026 · transaction dateReported units 41,667 shares · reported price not providedCommon Stock, $0.01 par value per shareReported position after transaction: 2,299,303 shares4 filing0001237860-26-000018
Sep 10, 2026Filed date1stdibs.com, Inc. (DIBS)NasdaqDispositionSEC code FEffective Sep 8, 2026 · transaction dateReported units 96,229 shares · reported price 4.73Common Stock, $0.01 par value per shareReported position after transaction: 2,203,074 shares4 filing0001237860-26-000018

Company-level recent transaction history is published for 1 of 1 relationship companies in this graph; 5 published transaction rows for this exact reporting-owner CIK appear in the chronology.

Thomas J. Etergino

SEC reporting-owner CIK 0001336088 · 1 published relationship company

SEC owner filings
Evidence dateCompanyObservationSecurity / positionSource
Sep 10, 2026Latest represented filing date1stdibs.com, Inc. (DIBS)NasdaqCurrent covered snapshotChief Financial OfficerValuation observation Sep 25, 2026Common Stock, $0.01 par value per share: 350,293 sharesCurrent covered company value: $1.4MPublished current ownership snapshotForms represented: 4Owner filingsIssuer filings
Sep 10, 2026Filed date1stdibs.com, Inc. (DIBS)NasdaqAcquisitionSEC code MEffective Sep 8, 2026 · transaction dateReported units 12,125 shares · reported price not providedCommon Stock, $0.01 par value per shareReported position after transaction: 345,545 shares4 filing0001336088-26-000009
Sep 10, 2026Filed date1stdibs.com, Inc. (DIBS)NasdaqAcquisitionSEC code MEffective Sep 8, 2026 · transaction dateReported units 11,172 shares · reported price not providedCommon Stock, $0.01 par value per shareReported position after transaction: 356,717 shares4 filing0001336088-26-000009
Sep 10, 2026Filed date1stdibs.com, Inc. (DIBS)NasdaqAcquisitionSEC code MEffective Sep 8, 2026 · transaction dateReported units 11,175 shares · reported price not providedCommon Stock, $0.01 par value per shareReported position after transaction: 367,892 shares4 filing0001336088-26-000009
Sep 10, 2026Filed date1stdibs.com, Inc. (DIBS)NasdaqDispositionSEC code FEffective Sep 8, 2026 · transaction dateReported units 17,599 shares · reported price 4.73Common Stock, $0.01 par value per shareReported position after transaction: 350,293 shares4 filing0001336088-26-000009

Company-level recent transaction history is published for 1 of 1 relationship companies in this graph; 4 published transaction rows for this exact reporting-owner CIK appear in the chronology.

Continue this ownership research

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CompanyReporting-owner contextPublished evidenceContinue research
1stdibs.com, Inc. (DIBS)Nasdaq · Current company11Published chronology observationsLatest represented evidence Sep 10, 2026

These are company-level continuation paths, not reporting-owner subscriptions. Saving or watching one company does not automatically save or watch the other companies connected to the same reporting owner, and it does not create an owner-level alert.