AMERICAN SCIENCE & ENGR INC

CUSIP: 029429107 Class: COM

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q2 2016
Shares 8,077 Value ($000) $302 Avg Close — Range —
Q1 2016
Shares 7,557 Value ($000) $209 Avg Close — Range —
Q4 2015
Shares 8,657 Value ($000) $358 Avg Close — Range —
Q3 2015
Shares 10,039 Value ($000) $357 Avg Close — Range —
Q2 2015
Shares 14,259 Value ($000) $625 Avg Close — Range —
Q1 2015
Shares 16,059 Value ($000) $785 Avg Close — Range —
Q4 2014
Shares 17,959 Value ($000) $932 Avg Close — Range —
Q3 2014
Shares 21,964 Value ($000) $1,216 Avg Close — Range —
Q2 2014
Shares 23,264 Value ($000) $1,619 Avg Close — Range —
Q1 2014
Shares 23,302 Value ($000) $1,565 Avg Close — Range —
Q4 2013
Shares 23,591 Value ($000) $1,696 Avg Close — Range —
Q3 2013
Shares 23,918 Value ($000) $1,442 Avg Close — Range —
Q2 2013
Shares 22,893 Value ($000) $1,282 Avg Close — Range —