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Nantahala Capital Management, LLC: KOS position timeline

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

Nantahala Capital Management, LLC held 0 KOS shares at 2026-06-30 per its 13F-HR/A filed 2026-08-19.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 0 shares
    Change vs previous 13F -1,844,194 shares

    13F-HR/A 0001104659-26-098416 filed by Nantahala Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2026-03-31
    13F 1,844,194 shares
    Change vs previous 13F -500,000 shares

    0.32% of the 13F portfolio, value $5,126,859.

    13F-HR 0001104659-26-062659 filed by Nantahala Capital 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 2,344,194 shares
    Change vs previous 13F +627,601 shares

    0.13% of the 13F portfolio, value $2,127,122.

    13F-HR 0001104659-26-015271 filed by Nantahala Capital 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 1,716,593 shares
    Change vs previous 13F 0 shares

    0.18% of the 13F portfolio, value $2,849,544.

    13F-HR 0001104659-25-112624 filed by Nantahala Capital 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 1,716,593 shares
    Change vs previous 13F 0 shares

    0.21% of the 13F portfolio, value $2,952,540.

    13F-HR 0001104659-25-078700 filed by Nantahala Capital 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 1,716,593 shares
    Change vs previous 13F not available

    0.32% of the 13F portfolio, value $3,913,832.

    13F-HR 0001104659-25-049574 filed by Nantahala Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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