ATMI INC

CUSIP: 00207R101 Class: COM

RHUMBLINE ADVISERS's Holding History (CIK: 0001115418)

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

Q1 2014
Shares 49,673 Value ($000) $1,689 Avg Close — Range —
Q4 2013
Shares 51,162 Value ($000) $1,546 Avg Close — Range —
Q3 2013
Shares 54,502 Value ($000) $1,445 Avg Close — Range —
Q2 2013
Shares 55,067 Value ($000) $1,302 Avg Close — Range —