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Disclosery

Byrne Asset Management LLC: BRK-B position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Byrne Asset Management LLC on BRK-B, newest first. How the timeline and the estimate are built.

Byrne Asset Management LLC held 3,221 BRK-B shares at 2026-09-30 per its 13F-HR filed 2026-10-06.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 3,221 shares
    Change vs previous 13F +16 shares

    0.9% of the 13F portfolio, value $1,612,111.

    13F-HR 0001911322-26-000005 filed by Byrne Asset Management LLC
    Accepted , ingested

  2. period ended2026-06-30
    13F 3,205 shares
    Change vs previous 13F -276 shares

    0.87% of the 13F portfolio, value $1,603,750.

    13F-HR 0001911322-26-000003 filed by Byrne Asset Management LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2026-03-31
    13F 3,481 shares
    Change vs previous 13F -376 shares

    0.98% of the 13F portfolio, value $1,668,095.

    13F-HR 0001911322-26-000002 filed by Byrne Asset Management LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-12-31
    13F 3,857 shares
    Change vs previous 13F -57 shares

    1.07% of the 13F portfolio, value $1,938,721.

    13F-HR 0001911322-26-000001 filed by Byrne Asset Management LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-09-30
    13F 3,914 shares
    Change vs previous 13F -23 shares

    1.21% of the 13F portfolio, value $1,967,724.

    13F-HR 0001911322-25-000008 filed by Byrne Asset Management LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-06-30
    13F 3,937 shares
    Change vs previous 13F -201 shares

    1.27% of the 13F portfolio, value $1,912,476.

    13F-HR 0001911322-25-000005 filed by Byrne Asset Management LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2025-03-31
    13F 4,138 shares
    Change vs previous 13F -48 shares

    1.63% of the 13F portfolio, value $2,203,816.

    13F-HR 0001911322-25-000004 filed by Byrne Asset Management LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-12-31
    13F 4,186 shares
    Change vs previous 13F not available

    1.33% of the 13F portfolio, value $1,897,430.

    13F-HR 0001911322-25-000001 filed by Byrne Asset Management LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).