Historical shareholding details of Oberweis Asset Management Inc holdings in American Superconductor Corp. (AMSC)

Monthly changes of Oberweis Asset Management Inc 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
Mar 31, 2025	Oberweis Asset Management Inc	1,328,800	3.37%

Feb 28, 2025	Oberweis Asset Management Inc	1,328,800	3.37%

Jan 31, 2025	Oberweis Asset Management Inc	1,328,800	3.37%

Dec 31, 2024	Oberweis Asset Management Inc	664,400	1.68%
Dec 31, 2024	Oberweis Asset Management Inc	1,328,800	3.37%

Nov 30, 2024	Oberweis Asset Management Inc	1,328,800	3.37%

Oct 31, 2024	Oberweis Asset Management Inc	1,328,800	3.37%

Sep 30, 2024	Oberweis Asset Management Inc	664,400	1.68%
Sep 30, 2024	Oberweis Asset Management Inc	1,328,800	3.47%

Aug 31, 2024	Oberweis Asset Management Inc	1,328,800	3.47%

Jul 31, 2024	Oberweis Asset Management Inc	1,298,800	3.51%

Jun 30, 2024	Oberweis Asset Management Inc	664,400	1.68%
Jun 30, 2024	Oberweis Asset Management Inc	1,268,800	3.43%

May 31, 2024	Oberweis Asset Management Inc	1,268,800	3.43%

Apr 30, 2024	Oberweis Asset Management Inc	751,600	2.08%

Mar 31, 2024	Oberweis Asset Management Inc	634,400	1.71%
Mar 31, 2024	Oberweis Asset Management Inc	751,600	2.08%