6月11日电，美国证交会文件显示，美国超导申请发行普通股，规模未披露。

Core Viewpoint - The company, American Superconductor, has filed with the U.S. Securities and Exchange Commission to issue common stock, although the size of the offering has not been disclosed [1] Group 1 - The filing indicates a potential move to raise capital through the issuance of common stock [1] - The lack of disclosed size suggests uncertainty regarding the scale of the offering [1]