Historical shareholding details of Oberweis Micro-Cap Growth holdings in American Superconductor Corp. (AMSC)

Monthly changes of Oberweis Micro-Cap Growth shareholding in American Superconductor Corp. over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Jun 30, 2025	Oberweis Micro-Cap Growth	634,400	1.40%

Mar 31, 2025	Oberweis Micro-Cap Growth	634,400	1.40%

Dec 31, 2024	Oberweis Micro-Cap Growth	634,400	1.61%

Sep 30, 2024	Oberweis Micro-Cap Growth	634,400	1.61%

Jun 30, 2024	Oberweis Micro-Cap Growth	634,400	1.61%

Mar 31, 2024	Oberweis Micro-Cap Growth	634,400	1.71%

Dec 31, 2023	Oberweis Micro-Cap Growth	375,800	1.02%