CASTLEARK MANAGEMENT LLC: TSEM position timeline

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

CASTLEARK MANAGEMENT LLC held 3,680 TSEM shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

period ended2026-06-30
13F 3,680 shares
Change vs previous 13F -49,560 shares
0.03% of the 13F portfolio, value $959,155.
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).
period ended2026-03-31
13F 53,240 shares
Change vs previous 13F +53,240 shares
0.31% of the 13F portfolio, value $9,342,555.
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).
period ended2025-03-31
13F 0 shares
Change vs previous 13F -105,770 shares
13F-HR 0001106832-25-000004 filed by CASTLEARK MANAGEMENT LLC
Filed 2025-05-15 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:06 UTC
Acceptance time not in the bulk data set (spec §4.2).
Exited: the 13F for this period no longer lists the position.
period ended2024-12-31
13F 105,770 shares
Change vs previous 13F -29,560 shares
0.19% of the 13F portfolio, value $5,448,213.
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).
period ended2024-09-30
13F 135,330 shares
Change vs previous 13F not available
0.24% of the 13F portfolio, value $5,989,706.
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).