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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
5768	American Science & Engineering Inc	ASEI	X-Ray Apparatus & Tubes & Related Irradiation Apparatus (3844)	042240991

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1353373	Kenneth Breur	C/O American Science And Engineering Inc 829 Middlesex Turnpike Billerica MA 01821	Senior Vice President	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	Disposition	2010-05-12	1,200	$80.00	11,704	No	4	S	Direct

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

Footnotes

This Amendment includes a Power of Attorney which could not be filed with the original Form 4 due to technical difficulties.
The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 23, 2010
The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from a low of $80.00 to a high of $80.9999 for an average of $80.00. The reporting person undertakes to provide to American Science and Engineering, Inc., any security holder of American Science and Engineering, Inc., or the staff of the Securities and Exchange Comminsion, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.
Includes 643 shares of AS&E Common Stock acquired under the AS&E 401(k) Plan. The information in this report is based on a plan statement dated as of May 12, 2010. These shares were omitted from the prior Form 4.