SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

MCDONALD CAPITAL INVESTORS INC/CA's Holding History (CIK: 0001033225)

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

Q3 2015
Shares 5,300 Value ($000) $736 Avg Close — Range —
Q2 2015
Shares 2,200 Value ($000) $307 Avg Close — Range —