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KAHN BROTHERS GROUP INC: PTEN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of KAHN BROTHERS GROUP INC on PTEN, newest first. How the timeline and the estimate are built.

KAHN BROTHERS GROUP INC held 1,663,758 PTEN shares at 2026-06-30 per its 13F-HR/A filed 2026-08-17.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 1,663,758 shares
    Change vs previous 13F -26,398 shares

    2.41% of the 13F portfolio, value $15,273,298.

    13F-HR/A 0001039565-26-000006 filed by KAHN BROTHERS GROUP INC
    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 1,690,156 shares
    Change vs previous 13F -51,857 shares

    3.25% of the 13F portfolio, value $18,304,389.

    13F-HR 0001039565-26-000002 filed by KAHN BROTHERS GROUP INC
    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 1,742,013 shares
    Change vs previous 13F -143,447 shares

    1.88% of the 13F portfolio, value $10,643,699.

    13F-HR 0001039565-26-000001 filed by KAHN BROTHERS GROUP INC
    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 1,885,460 shares
    Change vs previous 13F -32,200 shares

    1.84% of the 13F portfolio, value $9,766,682.

    13F-HR 0001039565-25-000006 filed by KAHN BROTHERS GROUP INC
    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 1,917,660 shares
    Change vs previous 13F -19,600 shares

    2.28% of the 13F portfolio, value $11,371,723.

    13F-HR 0001039565-25-000005 filed by KAHN BROTHERS GROUP INC
    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 1,937,260 shares
    Change vs previous 13F -59,111 shares

    3.22% of the 13F portfolio, value $15,924,569.

    13F-HR 0001039565-25-000004 filed by KAHN BROTHERS GROUP INC
    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 1,996,371 shares
    Change vs previous 13F -249,658 shares

    3.58% of the 13F portfolio, value $16,489,546.

    13F-HR 0001039565-25-000001 filed by KAHN BROTHERS GROUP INC
    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 2,246,029 shares
    Change vs previous 13F not available

    2.96% of the 13F portfolio, value $17,182,207.

    13F-HR 0001039565-24-000013 filed by KAHN BROTHERS GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

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