ATMI INC

CUSIP: 00207R101 Class: COM

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

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

Q1 2014
Shares 209,163 Value ($000) $7,114 Avg Close — Range —
Q4 2013
Shares 194,500 Value ($000) $5,876 Avg Close — Range —
Q3 2013
Shares 182,901 Value ($000) $4,850 Avg Close — Range —
Q2 2013
Shares 177,449 Value ($000) $4,196 Avg Close — Range —