SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

HBK INVESTMENTS L P's Holding History (CIK: 0001011443)

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

Q3 2015
Shares 1,501,076 Value ($000) $208,529 Avg Close — Range —
Q2 2015
Shares 1,414,836 Value ($000) $197,157 Avg Close — Range —
Q1 2015
Shares 127,205 Value ($000) $17,586 Avg Close — Range —
Q4 2014
Shares 127,205 Value ($000) $17,461 Avg Close — Range —