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CASTLEARK MANAGEMENT LLC: WMB position timeline

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

CASTLEARK MANAGEMENT LLC held 131,770 WMB 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 131,770 shares
    Change vs previous 13F 0 shares

    0.26% of the 13F portfolio, value $9,795,782.

    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 131,770 shares
    Change vs previous 13F +6,040 shares

    0.32% of the 13F portfolio, value $9,590,221.

    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 125,730 shares
    Change vs previous 13F +19,090 shares

    0.22% of the 13F portfolio, value $7,557,630.

    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 106,640 shares
    Change vs previous 13F 0 shares

    0.19% of the 13F portfolio, value $6,755,644.

    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 106,640 shares
    Change vs previous 13F +36,530 shares

    0.2% of the 13F portfolio, value $6,698,058.

    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 70,110 shares
    Change vs previous 13F +44,540 shares

    0.15% of the 13F portfolio, value $4,189,774.

    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 25,570 shares
    Change vs previous 13F 0 shares

    0.05% of the 13F portfolio, value $1,383,848.

    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 25,570 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $1,167,271.

    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).