0000927016-01-501691 10-K 4 20010331 20010627 AMERICAN SUPERCONDUCTOR CORP /DE/ 0000880807 8731 042959321 DE 0331 10-K 34 000-19672 1669212 TWO TECHNOLOGY DR WESTBOROUGH MA 01581 5088364200 TWO TECHNOLOGY DR WESTBOROUGH MA 01581 10-K 1 d10k.txt FORM 10-K EX-10.21 2 dex1021.txt 1996 STOCK INCENTIVE PLAN EX-10.26 3 dex1026.txt 1997 DIRECTOR STOCK OPTION PLAN EX-21.1 4 dex211.txt SUBSIDIARIES