AMERICAN SCIENCE & ENGR INC

CUSIP: 029429107 Class: COM

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q2 2016
Shares 899,043 Value ($000) $33,633 Avg Close — Range —
Q1 2016
Shares 924,723 Value ($000) $25,606 Avg Close — Range —
Q4 2015
Shares 876,153 Value ($000) $36,255 Avg Close — Range —
Q3 2015
Shares 896,333 Value ($000) $31,874 Avg Close — Range —
Q2 2015
Shares 939,723 Value ($000) $41,169 Avg Close — Range —
Q1 2015
Shares 1,131,383 Value ($000) $55,279 Avg Close — Range —
Q4 2014
Shares 1,142,783 Value ($000) $59,310 Avg Close — Range —
Q3 2014
Shares 1,059,563 Value ($000) $58,679 Avg Close — Range —
Q2 2014
Shares 1,042,253 Value ($000) $72,530 Avg Close — Range —
Q1 2014
Shares 1,031,353 Value ($000) $69,276 Avg Close — Range —
Q4 2013
Shares 938,763 Value ($000) $67,506 Avg Close — Range —
Q3 2013
Shares 725,583 Value ($000) $43,760 Avg Close — Range —
Q2 2013
Shares 698,475 Value ($000) $39,115 Avg Close — Range —