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AMG National Trust Bank: BRK-B position timeline

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

AMG National Trust Bank held 20,440 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 20,440 shares
    Change vs previous 13F -6,797 shares

    0.21% of the 13F portfolio, value $10,227,975.

    13F-HR 0001388829-26-000004 filed by AMG National Trust Bank
    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 27,237 shares
    Change vs previous 13F +6,145 shares

    0.28% of the 13F portfolio, value $13,051,995.

    13F-HR 0001388829-26-000002 filed by AMG National Trust Bank
    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 21,092 shares
    Change vs previous 13F -1,071 shares

    0.25% of the 13F portfolio, value $10,601,652.

    13F-HR 0001388829-26-000001 filed by AMG National Trust Bank
    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 22,163 shares
    Change vs previous 13F -1,157 shares

    0.27% of the 13F portfolio, value $11,142,227.

    13F-HR 0001388829-25-000005 filed by AMG National Trust Bank
    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 23,320 shares
    Change vs previous 13F +172 shares

    0.3% of the 13F portfolio, value $11,328,159.

    13F-HR 0001085146-25-004480 filed by AMG National Trust Bank
    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 23,148 shares
    Change vs previous 13F -651 shares

    0.35% of the 13F portfolio, value $12,341,559.

    13F-HR 0001085146-25-002594 filed by AMG National Trust Bank
    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 23,799 shares
    Change vs previous 13F +552 shares

    0.31% of the 13F portfolio, value $11,221,635.

    13F-HR 0001085146-25-000866 filed by AMG National Trust Bank
    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 23,247 shares
    Change vs previous 13F not available

    0.29% of the 13F portfolio, value $10,699,665.

    13F-HR 0001085146-24-005401 filed by AMG National Trust Bank
    Filed (acceptance time not in the bulk data set), ingested

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