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SUMITOMO LIFE INSURANCE CO: BRK-B position timeline

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

SUMITOMO LIFE INSURANCE CO held 10,849 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 10,849 shares
    Change vs previous 13F -628 shares

    0.09% of the 13F portfolio, value $5,428,731.

    13F-HR 0001140361-26-032353 filed by SUMITOMO LIFE 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 11,477 shares
    Change vs previous 13F +289 shares

    0.13% of the 13F portfolio, value $5,499,778.

    13F-HR 0001140361-26-020673 filed by SUMITOMO LIFE 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 11,188 shares
    Change vs previous 13F +97 shares

    0.15% of the 13F portfolio, value $5,623,648.

    13F-HR 0001140361-26-005135 filed by SUMITOMO LIFE 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 11,091 shares
    Change vs previous 13F -354 shares

    0.17% of the 13F portfolio, value $5,575,889.

    13F-HR 0001140361-25-041496 filed by SUMITOMO LIFE 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 11,445 shares
    Change vs previous 13F +1,152 shares

    0.38% of the 13F portfolio, value $5,559,638.

    13F-HR 0001140361-25-028716 filed by SUMITOMO LIFE 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 10,293 shares
    Change vs previous 13F -159 shares

    0.2% of the 13F portfolio, value $5,481,846.

    13F-HR 0001140361-25-016980 filed by SUMITOMO LIFE 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 10,452 shares
    Change vs previous 13F -243 shares

    0.09% of the 13F portfolio, value $4,737,683.

    13F-HR 0001140361-25-001666 filed by SUMITOMO LIFE 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 10,695 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $4,922,481.

    13F-HR 0001140361-24-043470 filed by SUMITOMO LIFE INSURANCE CO
    Filed (acceptance time not in the bulk data set), ingested

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