ATMI INC

CUSIP: 00207R101 Class: COM

Yorktown Management & Research Co Inc's Holding History (CIK: 0001313559)

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

Q1 2014
Shares 10,300 Value ($000) $350 Avg Close — Range —
Q4 2013
Shares 10,300 Value ($000) $311 Avg Close — Range —
Q3 2013
Shares 10,300 Value ($000) $273 Avg Close — Range —
Q2 2013
Shares 10,300 Value ($000) $244 Avg Close — Range —