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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
1352965	Paul Grazewski	American Science And Engineering, Inc. 829 Middlesex Turnpike Billerica MA 01821	Svp	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
Common Stock	Acquisiton	2011-01-27	3,134	$20.55	12,611	No	4	M	Direct
Common Stock	Acquisiton	2011-01-27	312	$61.45	12,923	No	4	M	Direct
Common Stock	Acquisiton	2011-01-27	50	$60.66	12,973	No	4	M	Direct
Common Stock	Disposition	2011-01-27	3,496	$89.00	9,477	No	4	S	Direct

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (right to buy)	Disposition	2011-01-27	50	$0.00	50	$60.66
Common Stock	Employee Stock Option (right to buy)	Disposition	2011-01-27	3,134	$0.00	3,134	$20.55
Common Stock	Employee Stock Option (right to buy)	Disposition	2011-01-27	312	$0.00	312	$61.45

Remaning Holdings	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
101	2017-09-14	No	4	M	Direct
0	2014-06-28	No	4	M	Direct
623	2017-08-15	No	4	M	Direct

Footnotes

On September 14, 2007, the reporting person was granted an option to purchase 151 shares of common stock. The option vested in 3 equal increments based upon satisfaction of certain performance criteria for each of the fiscal years ending March 31, 2008, 2009, and 2010. The performance criteria were met, resulting in vesting of the option as to 151 shares.
On June 28, 2004, the reporting person was granted an option to purchase 13,257 shares of common stock which vested as follows: 5716 shares on June 28, 2005; 4407 shares on June 28, 2006 and 3134 shares on June 28, 2007.
On August 15, 2007, the reporting person was granted an option to purchase 935 shares of common stock. The option vested in 3 equal increments based upon satisfaction of certain performance criteria for each of the fiscal years ending March 31, 2008, 2009, and 2010. The performance criteria were met, resulting in vesting of the option as to 935 shares.
The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 5, 2010.