ATMI INC

CUSIP: 00207R101 Class: COM

WELLS FARGO & COMPANY/MN's Holding History (CIK: 0000072971)

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

Q1 2014
Shares 3,490 Value ($000) $118 Avg Close — Range —
Q4 2013
Shares 2,224,086 Value ($000) $67,190 Avg Close — Range —
Q3 2013
Shares 2,118,753 Value ($000) $56,189 Avg Close — Range —
Q2 2013
Shares 1,992,768 Value ($000) $47,129 Avg Close — Range —