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Disclosery

Mariner, LLC: AMSC position timeline

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

Mariner, LLC held 18,751 AMSC 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 18,751 shares
    Change vs previous 13F -6,399 shares

    <0.01% of the 13F portfolio, value $778,484.

    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 25,150 shares
    Change vs previous 13F +4,587 shares

    <0.01% of the 13F portfolio, value $851,311.

    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).

  3. period ended2025-12-31
    13F 20,563 shares
    Change vs previous 13F +7,336 shares

    <0.01% of the 13F portfolio, value $591,681.

    13F-HR 0001580642-26-001057 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).

  4. period ended2025-09-30
    13F 13,227 shares
    Change vs previous 13F +932 shares

    <0.01% of the 13F portfolio, value $785,552.

    13F-HR 0001580642-25-007297 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).

  5. period ended2025-06-30
    13F 12,295 shares
    Change vs previous 13F +12,295 shares

    <0.01% of the 13F portfolio, value $451,104.

    13F-HR 0001580642-25-005128 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).

  6. period ended2025-03-31
    13F 0 shares
    Change vs previous 13F -8,207 shares

    13F-HR 0001580642-25-003135 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).

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

  7. period ended2024-12-31
    13F 8,207 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $202,138.

    13F-HR 0001580642-25-000997 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).