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.

Butterfly Network, Inc. (BFLY)

NYSE · SEC CIK 0001804176

$4.66MCovered 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: Aug 17, 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
Lawrence M. RobbinsResearch disclosed relationshipsDirector390,952 sharesClass A common stock, par value $0.0001 per share$3.67MAug 17, 2026
Jonathan M. RothbergResearch disclosed relationshipsDirector105,881 sharesClass A common stock, par value $0.0001 per share$993.16KJul 24, 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.

3 shown
Effective dateHolderActionSecurityUnitsReported priceReported position after transactionCurrent covered positionFiling
Jul 16, 2026Transaction dateJonathan M. RothbergResearch disclosed relationshipsSaleSEC code SClass A common stock, par value $0.0001 per share253,867 shares$7.0889105,881 shares105,881 sharesOwner coverage latest filing Jul 24, 20264Filed Jul 16, 2026
Jul 15, 2026Transaction dateJonathan M. RothbergResearch disclosed relationshipsSaleSEC code SClass A common stock, par value $0.0001 per share1,730,319 shares$7.3228359,748 shares105,881 sharesOwner coverage latest filing Jul 24, 20264Filed Jul 16, 2026
Jul 14, 2026Transaction dateJonathan M. RothbergResearch disclosed relationshipsSaleSEC code SClass A common stock, par value $0.0001 per share815,632 shares$7.71782,090,067 shares105,881 sharesOwner coverage latest filing Jul 24, 20264Filed Jul 16, 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 3 of 3 source candidates under the current reviewed security-resolution rules.

Covered securities

SecurityInstrument familyCovered positionsCovered value
Class A common stock, par value $0.0001 per shareordinary-share2$4.66M

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.

Jonathan M. Rothberg

SEC reporting-owner CIK 0001076352 · 1 published relationship company

SEC owner filings
Evidence dateCompanyObservationSecurity / positionSource
Jul 24, 2026Latest represented filing dateButterfly Network, Inc. (BFLY)NYSECurrent covered snapshotDirectorValuation observation Sep 25, 2026Class A common stock, par value $0.0001 per share: 105,881 sharesCurrent covered company value: $993.16KPublished current ownership snapshotForms represented: 4Owner filingsIssuer filings
Jul 16, 2026Filed dateButterfly Network, Inc. (BFLY)NYSESaleSEC code SEffective Jul 14, 2026 · transaction dateReported units 815,632 shares · reported price 7.7178Class A common stock, par value $0.0001 per shareReported position after transaction: 2,090,067 shares4 filing0001104659-26-084347
Jul 16, 2026Filed dateButterfly Network, Inc. (BFLY)NYSESaleSEC code SEffective Jul 15, 2026 · transaction dateReported units 1,730,319 shares · reported price 7.3228Class A common stock, par value $0.0001 per shareReported position after transaction: 359,748 shares4 filing0001104659-26-084347
Jul 16, 2026Filed dateButterfly Network, Inc. (BFLY)NYSESaleSEC code SEffective Jul 16, 2026 · transaction dateReported units 253,867 shares · reported price 7.0889Class A common stock, par value $0.0001 per shareReported position after transaction: 105,881 shares4 filing0001104659-26-084347

Company-level recent transaction history is published for 1 of 1 relationship companies in this graph; 3 published transaction rows for this exact reporting-owner CIK appear in the chronology.

Lawrence M. Robbins

SEC reporting-owner CIK 0001228603 · 1 published relationship company

SEC owner filings
Evidence dateCompanyObservationSecurity / positionSource
Aug 17, 2026Latest represented filing dateButterfly Network, Inc. (BFLY)NYSECurrent covered snapshotDirectorValuation observation Sep 25, 2026Class A common stock, par value $0.0001 per share: 390,952 sharesCurrent covered company value: $3.67MPublished current ownership snapshotForms represented: 4Owner filingsIssuer filings

Company-level recent transaction history is published for 1 of 1 relationship companies in this graph; 0 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
Butterfly Network, Inc. (BFLY)NYSE · Current company5Published chronology observationsLatest represented evidence Aug 17, 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.