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Disclosery

Penbrook Management LLC: KOPN position timeline

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

Penbrook Management LLC held 88,275 KOPN 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 88,275 shares
    Change vs previous 13F -26,300 shares

    0.25% of the 13F portfolio, value $395,472.

    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 114,575 shares
    Change vs previous 13F -400 shares

    0.2% of the 13F portfolio, value $257,793.

    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 114,975 shares
    Change vs previous 13F -22,000 shares

    0.19% of the 13F portfolio, value $269,042.

    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 136,975 shares
    Change vs previous 13F +60,000 shares

    0.23% of the 13F portfolio, value $332,849.

    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 76,975 shares
    Change vs previous 13F -16,350 shares

    0.09% of the 13F portfolio, value $117,771.

    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 93,325 shares
    Change vs previous 13F +44,750 shares

    0.07% of the 13F portfolio, value $86,998.

    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 48,575 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $66,062.

    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).