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Disclosery

CoreFirst Bank & Trust: BRK-B position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of CoreFirst Bank & Trust on BRK-B, newest first. How the timeline and the estimate are built.

CoreFirst Bank & Trust held 2,398 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-05.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,398 shares
    Change vs previous 13F -15 shares

    0.6% of the 13F portfolio, value $1,199,935.

    13F-HR 0001845199-26-000003 filed by CoreFirst Bank & Trust
    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 2,413 shares
    Change vs previous 13F -12 shares

    0.61% of the 13F portfolio, value $1,156,310.

    13F-HR 0001845199-26-000002 filed by CoreFirst Bank & Trust
    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 2,425 shares
    Change vs previous 13F +47 shares

    0.66% of the 13F portfolio, value $1,218,926.

    13F-HR 0001845199-26-000001 filed by CoreFirst Bank & Trust
    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 2,378 shares
    Change vs previous 13F -12 shares

    0.65% of the 13F portfolio, value $1,195,516.

    13F-HR 0001845199-25-000006 filed by CoreFirst Bank & Trust
    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 2,390 shares
    Change vs previous 13F +47 shares

    0.66% of the 13F portfolio, value $1,160,990.

    13F-HR 0001845199-25-000004 filed by CoreFirst Bank & Trust
    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 2,343 shares
    Change vs previous 13F +163 shares

    0.8% of the 13F portfolio, value $1,247,835.

    13F-HR 0001845199-25-000003 filed by CoreFirst Bank & Trust
    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 2,180 shares
    Change vs previous 13F +42 shares

    0.59% of the 13F portfolio, value $988,150.

    13F-HR 0001845199-25-000002 filed by CoreFirst Bank & Trust
    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 2,138 shares
    Change vs previous 13F not available

    0.57% of the 13F portfolio, value $984,036.

    13F-HR 0001845199-25-000001 filed by CoreFirst Bank & Trust
    Filed (acceptance time not in the bulk data set), ingested

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