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Spinnaker Investment Group, LLC: BRK-A position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Spinnaker Investment Group, LLC on BRK-A, newest first. How the timeline and the estimate are built.

Spinnaker Investment Group, LLC held 23 BRK-A shares at 2026-09-30 per its 13F-HR filed 2026-10-13.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 23 shares
    Change vs previous 13F 0 shares

    2.71% of the 13F portfolio, value $17,181,115.

    13F-HR 0001911067-26-000005 filed by Spinnaker Investment Group, LLC
    Accepted , ingested

  2. period ended2026-06-30
    13F 23 shares
    Change vs previous 13F 0 shares

    2.76% of the 13F portfolio, value $17,223,550.

    13F-HR 0001911067-26-000003 filed by Spinnaker Investment Group, 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 23 shares
    Change vs previous 13F -10 shares

    3.36% of the 13F portfolio, value $16,517,220.

    13F-HR 0001911067-26-000002 filed by Spinnaker Investment Group, 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 33 shares
    Change vs previous 13F 0 shares

    4.52% of the 13F portfolio, value $24,908,400.

    13F-HR 0001911067-26-000001 filed by Spinnaker Investment Group, 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 33 shares
    Change vs previous 13F -3 shares

    4.68% of the 13F portfolio, value $24,888,600.

    13F-HR 0001085146-25-005913 filed by Spinnaker Investment Group, 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 36 shares
    Change vs previous 13F 0 shares

    6.16% of the 13F portfolio, value $26,236,800.

    13F-HR 0001667731-25-000848 filed by Spinnaker Investment Group, 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 36 shares
    Change vs previous 13F not available

    6.5% of the 13F portfolio, value $28,743,898.

    13F-HR 0001667731-25-000486 filed by Spinnaker Investment Group, LLC
    Filed (acceptance time not in the bulk data set), ingested

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