ATMI INC

CUSIP: 00207R101 Class: COM

MASON STREET ADVISORS, LLC's Holding History (CIK: 0001167711)

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

Q1 2014
Shares 81,142 Value ($000) $2,760 Avg Close — Range —
Q4 2013
Shares 82,165 Value ($000) $2,482 Avg Close — Range —
Q3 2013
Shares 4,690 Value ($000) $124 Avg Close — Range —
Q2 2013
Shares 4,424 Value ($000) $105 Avg Close — Range —