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Disclosery

Samjo Management, LLC: BRK-B position timeline

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

Samjo Management, LLC held 15,790 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 15,790 shares
    Change vs previous 13F +625 shares

    2.7% of the 13F portfolio, value $7,901,158.

    13F-HR 0000919574-26-005254 filed by Samjo Management, LLC
    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 15,165 shares
    Change vs previous 13F +410 shares

    3.14% of the 13F portfolio, value $7,267,068.

    13F-HR 0000919574-26-003552 filed by Samjo Management, LLC
    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/A 14,755 shares
    Change vs previous 13F +408 shares

    2.87% of the 13F portfolio, value $7,416,601.

    13F-HR/A 0000919574-26-001176 filed by Samjo Management, LLC
    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 14,347 shares
    Change vs previous 13F -83 shares

    2.76% of the 13F portfolio, value $7,212,811.

    13F-HR 0000919574-25-006611 filed by Samjo Management, LLC
    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 14,430 shares
    Change vs previous 13F +940 shares

    2.96% of the 13F portfolio, value $7,009,661.

    13F-HR 0000919574-25-004541 filed by Samjo Management, LLC
    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 13,490 shares
    Change vs previous 13F -455 shares

    3.05% of the 13F portfolio, value $7,184,504.

    13F-HR 0000919574-25-002964 filed by Samjo Management, LLC
    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 13,945 shares
    Change vs previous 13F +915 shares

    2.38% of the 13F portfolio, value $6,320,990.

    13F-HR 0000919574-25-001026 filed by Samjo Management, LLC
    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 13,030 shares
    Change vs previous 13F not available

    2.07% of the 13F portfolio, value $5,997,188.

    13F-HR 0000919574-24-006271 filed by Samjo Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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