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THOMPSON INVESTMENT MANAGEMENT, INC.: BRK-B position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of THOMPSON INVESTMENT MANAGEMENT, INC. on BRK-B, newest first. How the timeline and the estimate are built.

THOMPSON INVESTMENT MANAGEMENT, INC. held 2,018 BRK-B shares at 2026-09-30 per its 13F-HR filed 2026-10-14.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 2,018 shares
    Change vs previous 13F -20 shares

    0.12% of the 13F portfolio, value $1,004,863.

    13F-HR 0001277279-26-000008 filed by THOMPSON INVESTMENT MANAGEMENT, INC.
    Accepted , ingested

  2. period ended2026-06-30
    13F 2,038 shares
    Change vs previous 13F +1,050 shares

    0.12% of the 13F portfolio, value $1,019,795.

    13F-HR 0001277279-26-000006 filed by THOMPSON INVESTMENT MANAGEMENT, INC.
    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 988 shares
    Change vs previous 13F +315 shares

    0.06% of the 13F portfolio, value $473,450.

    13F-HR 0001277279-26-000004 filed by THOMPSON INVESTMENT MANAGEMENT, INC.
    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 673 shares
    Change vs previous 13F +217 shares

    0.04% of the 13F portfolio, value $338,283.

    13F-HR 0001277279-26-000002 filed by THOMPSON INVESTMENT MANAGEMENT, INC.
    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 456 shares
    Change vs previous 13F 0 shares

    0.03% of the 13F portfolio, value $229,249.

    13F-HR 0001277279-25-000008 filed by THOMPSON INVESTMENT MANAGEMENT, INC.
    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 456 shares
    Change vs previous 13F 0 shares

    0.03% of the 13F portfolio, value $221,511.

    13F-HR 0001277279-25-000006 filed by THOMPSON INVESTMENT MANAGEMENT, INC.
    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 456 shares
    Change vs previous 13F 0 shares

    0.04% of the 13F portfolio, value $242,856.

    13F-HR 0001277279-25-000004 filed by THOMPSON INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 456 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $206,696.

    13F-HR 0001277279-25-000002 filed by THOMPSON INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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