ATMI INC

CUSIP: 00207R101 Class: COM

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q1 2014
Shares 90,080 Value ($000) $3,064 Avg Close — Range —
Q4 2013
Shares 91,980 Value ($000) $2,779 Avg Close — Range —
Q3 2013
Shares 93,180 Value ($000) $2,471 Avg Close — Range —
Q2 2013
Shares 94,680 Value ($000) $2,239 Avg Close — Range —