CASTLEARK MANAGEMENT LLC: RIG position timeline

CASTLEARK MANAGEMENT LLC held 1,813,160 RIG 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 1,813,160 shares

   Change vs previous 13F +976,040 shares

   0.24% of the 13F portfolio, value $8,866,352.

   13F-HR 0001106832-26-000004 filed by CASTLEARK MANAGEMENT LLC
   Filed 2026-08-14 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC

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

2. period ended2026-03-31

   13F 837,120 shares

   Change vs previous 13F -304,570 shares

   0.18% of the 13F portfolio, value $5,550,106.

   13F-HR 0001106832-26-000003 filed by CASTLEARK MANAGEMENT LLC
   Filed 2026-05-15 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC

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

3. period ended2025-12-31

   13F 1,141,690 shares

   Change vs previous 13F +1,141,690 shares

   0.14% of the 13F portfolio, value $4,715,180.

   13F-HR 0001106832-26-000001 filed by CASTLEARK MANAGEMENT LLC
   Filed 2026-02-13 (acceptance time not in the bulk data set), ingested 2026-10-07 03:01:36 UTC

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

4. period ended2024-12-31

   13F 0 shares

   Change vs previous 13F -679,750 shares

   13F-HR 0001106832-25-000001 filed by CASTLEARK MANAGEMENT LLC
   Filed 2025-02-18 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:55 UTC

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

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

5. period ended2024-09-30

   13F 679,750 shares

   Change vs previous 13F not available

   0.12% of the 13F portfolio, value $2,888,938.

   13F-HR 0001106832-24-000008 filed by CASTLEARK MANAGEMENT LLC
   Filed 2024-11-15 (acceptance time not in the bulk data set), ingested 2026-10-07 18:26:56 UTC

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