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Disclosery

Penbrook Management LLC: BRK-B position timeline

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

Penbrook Management LLC held 3,290 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 3,290 shares
    Change vs previous 13F -10 shares

    1.05% of the 13F portfolio, value $1,646,283.

    13F-HR 0001381055-26-000003 filed by Penbrook 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 3,300 shares
    Change vs previous 13F -50 shares

    1.2% of the 13F portfolio, value $1,581,360.

    13F-HR 0001381055-26-000002 filed by Penbrook 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 3,350 shares
    Change vs previous 13F -25 shares

    1.16% of the 13F portfolio, value $1,683,877.

    13F-HR 0001381055-26-000001 filed by Penbrook 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 3,375 shares
    Change vs previous 13F +275 shares

    1.18% of the 13F portfolio, value $1,696,747.

    13F-HR 0001381055-25-000008 filed by Penbrook 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/A 3,100 shares
    Change vs previous 13F -480 shares

    1.13% of the 13F portfolio, value $1,505,887.

    13F-HR/A 0001381055-25-000006 filed by Penbrook 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 3,580 shares
    Change vs previous 13F 0 shares

    1.44% of the 13F portfolio, value $1,906,636.

    13F-HR 0001381055-25-000002 filed by Penbrook 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 3,580 shares
    Change vs previous 13F 0 shares

    1.11% of the 13F portfolio, value $1,622,742.

    13F-HR 0001381055-25-000001 filed by Penbrook 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 3,580 shares
    Change vs previous 13F not available

    1.07% of the 13F portfolio, value $1,647,731.

    13F-HR 0001381055-24-000005 filed by Penbrook Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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