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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
880807	American Superconductor Corp	AMSC	Motors & Generators (3621)	042959321

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1192879	R Angelo Santamaria	C/O American Superconductor Corporation 64 Jackson Road Devens MA 01434	Svp Global Manufacturing	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2010-05-12	5,000	$0.00	52,500	No	4	A	Direct
Common Stock	Disposition	2010-05-14	1,000	$30.70	51,500	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	A	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (Right to buy)	Acquisiton	2010-05-12	8,000	$0.00	8,000	$29.24

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
8,000		2020-05-12	No	4	A	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	1,867	Indirect	By 401(K) Plan

Footnotes

The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 Plan. The primary purpose of such sales was to pay personal income taxes that were due upon the vesting of restricted stock on May 12, 2010.
Following all the transactions reported on this Form 4, the reporting person holds 51,500 shares directly.
Following all the transactions reported on this Form 4, the reporting person holds 1,867 shares indirectly through the company's 401(k) plan as of April 30, 2010.
The options vest in three equal annual installments beginning May 12, 2011.