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Disclosery

PARTHENON LLC: BRK-B position timeline

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

PARTHENON LLC held 136,778 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-23.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 136,778 shares
    Change vs previous 13F -1,570 shares

    7.11% of the 13F portfolio, value $68,442,343.

    13F-HR 0001088859-26-000004 filed by PARTHENON 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 138,348 shares
    Change vs previous 13F -271 shares

    7.58% of the 13F portfolio, value $66,296,362.

    13F-HR 0001088859-26-000002 filed by PARTHENON 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 138,619 shares
    Change vs previous 13F +418 shares

    7.52% of the 13F portfolio, value $69,676,840.

    13F-HR 0001088859-26-000001 filed by PARTHENON 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 138,201 shares
    Change vs previous 13F -4,085 shares

    7.7% of the 13F portfolio, value $69,479,171.

    13F-HR 0001088859-25-000003 filed by PARTHENON 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 142,286 shares
    Change vs previous 13F -365 shares

    7.91% of the 13F portfolio, value $69,118,270.

    13F-HR 0001085146-25-004248 filed by PARTHENON 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 142,651 shares
    Change vs previous 13F -3,987 shares

    9.34% of the 13F portfolio, value $75,973,070.

    13F-HR 0001085146-25-002554 filed by PARTHENON 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 146,638 shares
    Change vs previous 13F -2,534 shares

    8.04% of the 13F portfolio, value $66,468,073.

    13F-HR 0001085146-25-000674 filed by PARTHENON 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 149,172 shares
    Change vs previous 13F not available

    8.2% of the 13F portfolio, value $68,657,905.

    13F-HR 0001085146-24-005366 filed by PARTHENON LLC
    Filed (acceptance time not in the bulk data set), ingested

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