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SeaBridge Investment Advisors LLC: BRK-B position timeline

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

SeaBridge Investment Advisors LLC held 28,886 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-17.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 28,886 shares
    Change vs previous 13F +817 shares

    2.09% of the 13F portfolio, value $14,454,266.

    13F-HR 0001304229-26-000004 filed by SeaBridge Investment Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2026-03-31
    13F 28,069 shares
    Change vs previous 13F +3,325 shares

    2.28% of the 13F portfolio, value $13,450,665.

    13F-HR 0001304229-26-000003 filed by SeaBridge Investment Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-12-31
    13F 24,744 shares
    Change vs previous 13F +2,753 shares

    2.05% of the 13F portfolio, value $12,437,572.

    13F-HR 0001304229-26-000001 filed by SeaBridge Investment Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 21,991 shares
    Change vs previous 13F -32 shares

    1.79% of the 13F portfolio, value $11,055,756.

    13F-HR 0001304229-25-000009 filed by SeaBridge Investment Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 22,023 shares
    Change vs previous 13F +254 shares

    1.99% of the 13F portfolio, value $10,698,113.

    13F-HR 0001085146-25-003905 filed by SeaBridge Investment Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 21,769 shares
    Change vs previous 13F -535 shares

    2.5% of the 13F portfolio, value $11,593,735.

    13F-HR 0001085146-25-002561 filed by SeaBridge Investment Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 22,304 shares
    Change vs previous 13F +1,173 shares

    2.11% of the 13F portfolio, value $10,109,958.

    13F-HR 0001085146-25-000452 filed by SeaBridge Investment Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 21,131 shares
    Change vs previous 13F not available

    2.38% of the 13F portfolio, value $9,725,755.

    13F-HR 0001085146-24-005337 filed by SeaBridge Investment Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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