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CASTLEARK MANAGEMENT LLC: MTZ position timeline

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

CASTLEARK MANAGEMENT LLC held 2,690 MTZ 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 2,690 shares
    Change vs previous 13F 0 shares

    0.03% of the 13F portfolio, value $1,119,201.

    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 2,690 shares
    Change vs previous 13F -5,780 shares

    0.03% of the 13F portfolio, value $865,481.

    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 8,470 shares
    Change vs previous 13F +4,930 shares

    0.05% of the 13F portfolio, value $1,841,124.

    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 3,540 shares
    Change vs previous 13F 0 shares

    0.02% of the 13F portfolio, value $753,347.

    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 3,540 shares
    Change vs previous 13F -4,300 shares

    0.02% of the 13F portfolio, value $603,322.

    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 7,840 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $915,006.

    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).