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Disclosery

White Pine Investment CO: BRK-B position timeline

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

White Pine Investment CO held 67,732 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-20.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 67,732 shares
    Change vs previous 13F -184 shares

    7.22% of the 13F portfolio, value $33,892,000.

    13F-HR 0001318259-26-000003 filed by White Pine Investment CO
    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 67,916 shares
    Change vs previous 13F -1,359 shares

    7.56% of the 13F portfolio, value $32,545,000.

    13F-HR 0001318259-26-000002 filed by White Pine Investment CO
    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 69,275 shares
    Change vs previous 13F -1,732 shares

    8.2% of the 13F portfolio, value $34,821,000.

    13F-HR 0001318259-26-000001 filed by White Pine Investment CO
    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 71,007 shares
    Change vs previous 13F -804 shares

    8.47% of the 13F portfolio, value $35,698,000.

    13F-HR 0001318259-25-000005 filed by White Pine Investment CO
    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 71,811 shares
    Change vs previous 13F -1,773 shares

    8.71% of the 13F portfolio, value $34,884,000.

    13F-HR 0001318259-25-000003 filed by White Pine Investment CO
    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 73,584 shares
    Change vs previous 13F -1,403 shares

    10.55% of the 13F portfolio, value $39,189,000.

    13F-HR 0001318259-25-000002 filed by White Pine Investment CO
    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 74,987 shares
    Change vs previous 13F -1,120 shares

    9.18% of the 13F portfolio, value $33,990,000.

    13F-HR 0001318259-25-000001 filed by White Pine Investment CO
    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 76,107 shares
    Change vs previous 13F not available

    9.61% of the 13F portfolio, value $35,029,000.

    13F-HR 0001318259-24-000004 filed by White Pine Investment CO
    Filed (acceptance time not in the bulk data set), ingested

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