SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q3 2015
Shares 34,601 Value ($000) $4,806 Avg Close — Range —
Q2 2015
Shares 20,380 Value ($000) $2,839 Avg Close — Range —
Q1 2015
Shares 5,325 Value ($000) $736 Avg Close — Range —