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Disclosery

Penbrook Management LLC: IBM position timeline

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

Penbrook Management LLC held 1,283 IBM 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 1,283 shares
    Change vs previous 13F 0 shares

    0.23% of the 13F portfolio, value $360,792.

    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 1,283 shares
    Change vs previous 13F -344 shares

    0.24% of the 13F portfolio, value $310,986.

    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 1,627 shares
    Change vs previous 13F -25 shares

    0.33% of the 13F portfolio, value $481,934.

    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 1,652 shares
    Change vs previous 13F -10 shares

    0.33% of the 13F portfolio, value $466,128.

    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 1,662 shares
    Change vs previous 13F -863 shares

    0.37% of the 13F portfolio, value $489,924.

    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 2,525 shares
    Change vs previous 13F 0 shares

    0.47% of the 13F portfolio, value $627,867.

    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 2,525 shares
    Change vs previous 13F -100 shares

    0.38% of the 13F portfolio, value $555,071.

    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 2,625 shares
    Change vs previous 13F not available

    0.38% of the 13F portfolio, value $580,335.

    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).