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Disclosery

Mawer Investment Management Ltd.: BRK-B position timeline

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

Mawer Investment Management Ltd. held 50,850 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 50,850 shares
    Change vs previous 13F -3,816 shares

    0.17% of the 13F portfolio, value $25,444,832.

    13F-HR 0000945621-26-000992 filed by Mawer Investment Management Ltd.
    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 54,666 shares
    Change vs previous 13F -167 shares

    0.17% of the 13F portfolio, value $26,195,947.

    13F-HR 0000945621-26-000636 filed by Mawer Investment Management Ltd.
    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 54,833 shares
    Change vs previous 13F -2,150 shares

    0.15% of the 13F portfolio, value $27,561,807.

    13F-HR 0000945621-26-000248 filed by Mawer Investment Management Ltd.
    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 56,983 shares
    Change vs previous 13F -644 shares

    0.15% of the 13F portfolio, value $28,647,633.

    13F-HR 0000945621-25-001010 filed by Mawer Investment Management Ltd.
    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 57,627 shares
    Change vs previous 13F +4,451 shares

    0.14% of the 13F portfolio, value $27,993,468.

    13F-HR 0000945621-25-000670 filed by Mawer Investment Management Ltd.
    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 53,176 shares
    Change vs previous 13F +52,426 shares

    0.14% of the 13F portfolio, value $28,320,474.

    13F-HR 0000945621-25-000421 filed by Mawer Investment Management Ltd.
    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 750 shares
    Change vs previous 13F 0 shares

    <0.01% of the 13F portfolio, value $339,960.

    13F-HR 0000945621-25-000162 filed by Mawer Investment Management Ltd.
    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 750 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $345,195.

    13F-HR 0000945621-24-000863 filed by Mawer Investment Management Ltd.
    Filed (acceptance time not in the bulk data set), ingested

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