AMERICAN SCIENCE & ENGR INC

CUSIP: 029429107 Class: COM

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

Note: Option positions (PUT/CALL) are excluded.

Q3 2013
Shares 3,420 Value ($000) $206,260 Avg Close — Range —
Q2 2013
Shares 8,460 Value ($000) $473,760 Avg Close — Range —