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Disclosery

FACTORY MUTUAL INSURANCE CO: BRK-B position timeline

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

FACTORY MUTUAL INSURANCE CO held 235,400 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-21.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 235,400 shares
    Change vs previous 13F -1,600 shares

    1.11% of the 13F portfolio, value $117,791,806.

    13F-HR 0000887818-26-000003 filed by FACTORY MUTUAL INSURANCE 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 237,000 shares
    Change vs previous 13F +5,900 shares

    1.28% of the 13F portfolio, value $113,570,400.

    13F-HR 0000887818-26-000002 filed by FACTORY MUTUAL INSURANCE 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 231,100 shares
    Change vs previous 13F -23,400 shares

    1.18% of the 13F portfolio, value $116,162,415.

    13F-HR 0000887818-26-000001 filed by FACTORY MUTUAL INSURANCE 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 254,500 shares
    Change vs previous 13F 0 shares

    1.25% of the 13F portfolio, value $127,947,330.

    13F-HR 0000887818-25-000002 filed by FACTORY MUTUAL INSURANCE 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 254,500 shares
    Change vs previous 13F 0 shares

    1.35% of the 13F portfolio, value $123,628,465.

    13F-HR 0001085146-25-004651 filed by FACTORY MUTUAL INSURANCE 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 254,500 shares
    Change vs previous 13F 0 shares

    1.57% of the 13F portfolio, value $135,541,610.

    13F-HR 0001085146-25-002161 filed by FACTORY MUTUAL INSURANCE 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 254,500 shares
    Change vs previous 13F 0 shares

    1.25% of the 13F portfolio, value $115,359,760.

    13F-HR 0001085146-25-000453 filed by FACTORY MUTUAL INSURANCE 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 254,500 shares
    Change vs previous 13F not available

    1.21% of the 13F portfolio, value $117,136,170.

    13F-HR 0001085146-24-004830 filed by FACTORY MUTUAL INSURANCE CO
    Filed (acceptance time not in the bulk data set), ingested

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