ARCH CHEMICALS INC

CUSIP: 03937R102 Class: COM

GLENMEDE TRUST CO NA's Holding History (CIK: 0000314949)

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

Q4 2010
Shares 3,425 Value ($000) $129 Avg Close — Range —
Q3 2010
Shares 2,250 Value ($000) $78 Avg Close — Range —