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CASTLEARK MANAGEMENT LLC: ESI position timeline

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

CASTLEARK MANAGEMENT LLC held 263,644 ESI 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 263,644 shares
    Change vs previous 13F -10,240 shares

    0.34% of the 13F portfolio, value $12,589,001.

    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 273,884 shares
    Change vs previous 13F +10,380 shares

    0.31% of the 13F portfolio, value $9,350,400.

    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 263,504 shares
    Change vs previous 13F +7,940 shares

    0.19% of the 13F portfolio, value $6,584,965.

    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 255,564 shares
    Change vs previous 13F +18,254 shares

    0.18% of the 13F portfolio, value $6,432,546.

    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 237,310 shares
    Change vs previous 13F +136,540 shares

    0.16% of the 13F portfolio, value $5,375,072.

    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 100,770 shares
    Change vs previous 13F -156,510 shares

    0.08% of the 13F portfolio, value $2,278,410.

    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).

  7. period ended2024-12-31
    13F 257,280 shares
    Change vs previous 13F -40,240 shares

    0.23% of the 13F portfolio, value $6,542,630.

    13F-HR 0001106832-25-000001 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).

  8. period ended2024-09-30
    13F 297,520 shares
    Change vs previous 13F not available

    0.33% of the 13F portfolio, value $8,080,643.

    13F-HR 0001106832-24-000008 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).