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Disclosery

Penbrook Management LLC: AMZN position timeline

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

Penbrook Management LLC held 51,760 AMZN 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 51,760 shares
    Change vs previous 13F 0 shares

    7.87% of the 13F portfolio, value $12,336,478.

    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 51,760 shares
    Change vs previous 13F 0 shares

    8.16% of the 13F portfolio, value $10,780,055.

    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 51,760 shares
    Change vs previous 13F +20 shares

    8.24% of the 13F portfolio, value $11,947,243.

    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 51,740 shares
    Change vs previous 13F +385 shares

    7.93% of the 13F portfolio, value $11,360,551.

    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 51,355 shares
    Change vs previous 13F -885 shares

    8.47% of the 13F portfolio, value $11,266,773.

    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 52,240 shares
    Change vs previous 13F -100 shares

    7.51% of the 13F portfolio, value $9,939,182.

    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 52,340 shares
    Change vs previous 13F -300 shares

    7.83% of the 13F portfolio, value $11,482,873.

    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 52,640 shares
    Change vs previous 13F not available

    6.38% of the 13F portfolio, value $9,808,411.

    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).