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CASTLEARK MANAGEMENT LLC: SGI position timeline

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

CASTLEARK MANAGEMENT LLC held 2,090 SGI shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,090 shares
    Change vs previous 13F -46,695 shares

    <0.01% of the 13F portfolio, value $163,856.

    13F-HR 0001106832-26-000004 filed by CASTLEARK 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 48,785 shares
    Change vs previous 13F -2,450 shares

    0.12% of the 13F portfolio, value $3,606,187.

    13F-HR 0001106832-26-000003 filed by CASTLEARK 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 51,235 shares
    Change vs previous 13F +1,690 shares

    0.13% of the 13F portfolio, value $4,574,261.

    13F-HR 0001106832-26-000001 filed by CASTLEARK 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 49,545 shares
    Change vs previous 13F +1,725 shares

    0.12% of the 13F portfolio, value $4,178,130.

    13F-HR 0001106832-25-000008 filed by CASTLEARK 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 47,820 shares
    Change vs previous 13F -1,350 shares

    0.1% of the 13F portfolio, value $3,254,151.

    13F-HR 0001106832-25-000006 filed by CASTLEARK 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 49,170 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $2,944,300.

    13F-HR 0001106832-25-000004 filed by CASTLEARK MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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