ATMI INC

CUSIP: 00207R101 Class: COM

PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO's Holding History (CIK: 0001007280)

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

Q1 2014
Shares 20,573 Value ($000) $700 Avg Close — Range —
Q4 2013
Shares 4,285 Value ($000) $129 Avg Close — Range —
Q3 2013
Shares 2,409 Value ($000) $64 Avg Close — Range —