SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

FORT WASHINGTON INVESTMENT ADVISORS INC /OH/'s Holding History (CIK: 0001009016)

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

Q3 2015
Shares 1,500 Value ($000) $208 Avg Close — Range —
Q2 2015
Shares 1,500 Value ($000) $209 Avg Close — Range —
Q1 2015
Shares 1,500 Value ($000) $207 Avg Close — Range —
Q4 2014
Shares 1,500 Value ($000) $206 Avg Close — Range —
Q3 2014
Shares 1,500 Value ($000) $204 Avg Close — Range —
Q2 2013
Shares 2,500 Value ($000) $201 Avg Close — Range —