ATMI INC

CUSIP: 00207R101 Class: COM

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

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

Q1 2014
Shares 797,709 Value ($000) $27,131 Avg Close — Range —
Q4 2013
Shares 823,870 Value ($000) $24,890 Avg Close — Range —
Q3 2013
Shares 807,018 Value ($000) $21,402 Avg Close — Range —
Q2 2013
Shares 792,547 Value ($000) $18,744 Avg Close — Range —