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Disclosery

Marnell Management LLC: CENX position timeline

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

Marnell Management LLC held 71,516 CENX shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 71,516 shares
    Change vs previous 13F +26,218 shares

    1.67% of the 13F portfolio, value $3,290,451.

    13F-HR 0001852314-26-000004 filed by Marnell 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 45,298 shares
    Change vs previous 13F -61,758 shares

    1.77% of the 13F portfolio, value $2,658,540.

    13F-HR 0001852314-26-000003 filed by Marnell 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 107,056 shares
    Change vs previous 13F not available

    3.19% of the 13F portfolio, value $4,194,454.

    13F-HR 0001852314-26-000002 filed by Marnell Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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