ATMI INC

CUSIP: 00207R101 Class: COM

MUFG Americas Holdings Corp's Holding History (CIK: 0001011659)

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

Q4 2011
Shares 5,900 Value ($000) $118 Avg Close — Range —
Q3 2011
Shares 9,300 Value ($000) $147 Avg Close — Range —
Q2 2011
Shares 9,300 Value ($000) $190 Avg Close — Range —
Q1 2011
Shares 12,800 Value ($000) $242 Avg Close — Range —
Q4 2010
Shares 12,800 Value ($000) $255 Avg Close — Range —