AMERICAN SCIENCE & ENGR INC

CUSIP: 029429107 Class: COM

PRINCIPAL FINANCIAL GROUP INC's Holding History (CIK: 0001126328)

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

Q2 2016
Shares 50,186 Value ($000) $1,877 Avg Close — Range —
Q1 2016
Shares 49,084 Value ($000) $1,359 Avg Close — Range —
Q4 2015
Shares 47,173 Value ($000) $1,952 Avg Close — Range —
Q3 2015
Shares 44,958 Value ($000) $1,599 Avg Close — Range —
Q2 2015
Shares 43,523 Value ($000) $1,907 Avg Close — Range —
Q1 2015
Shares 46,365 Value ($000) $2,266 Avg Close — Range —
Q4 2014
Shares 47,647 Value ($000) $2,473 Avg Close — Range —
Q3 2014
Shares 47,604 Value ($000) $2,636 Avg Close — Range —
Q2 2014
Shares 48,010 Value ($000) $3,341 Avg Close — Range —
Q1 2014
Shares 47,667 Value ($000) $3,202 Avg Close — Range —
Q4 2013
Shares 45,806 Value ($000) $3,294 Avg Close — Range —
Q3 2013
Shares 46,322 Value ($000) $2,793 Avg Close — Range —
Q2 2013
Shares 41,136 Value ($000) $2,304 Avg Close — Range —