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Disclosery

Mariner, LLC: CSTM position timeline

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

Mariner, LLC held 138,055 CSTM 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 138,055 shares
    Change vs previous 13F +36,592 shares

    <0.01% of the 13F portfolio, value $4,399,623.

    13F-HR 0001580642-26-005266 filed by Mariner, 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 101,463 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $2,493,452.

    13F-HR 0001580642-26-003158 filed by Mariner, LLC
    Filed (acceptance time not in the bulk data set), ingested

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