HEIGHTS CAPITAL MANAGEMENT, INC: AMSC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of HEIGHTS CAPITAL MANAGEMENT, INC on AMSC, newest first. How the timeline and the estimate are built.

HEIGHTS CAPITAL MANAGEMENT, INC held 0 AMSC shares at 2025-09-30 per its 13F-HR/A filed 2025-11-18.

the latest 13F is the newest step

period ended2025-09-30
13F/A 0 shares
Change vs previous 13F -340,102 shares
13F-HR/A 0001081698-25-000010 filed by HEIGHTS CAPITAL MANAGEMENT, INC
Filed 2025-11-18 (acceptance time not in the bulk data set), ingested 2026-10-07 03:02:25 UTC
Acceptance time not in the bulk data set (spec §4.2).
Exited: the 13F for this period no longer lists the position.
period ended2025-06-30
13F 340,102 shares
Change vs previous 13F not available
3.9% of the 13F portfolio, value $12,478,342.
13F-HR 0001081698-25-000005 filed by HEIGHTS CAPITAL MANAGEMENT, INC
Filed 2025-08-14 (acceptance time not in the bulk data set), ingested 2026-10-07 18:23:11 UTC
Acceptance time not in the bulk data set (spec §4.2).