SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

Douglass Winthrop Advisors, LLC's Holding History (CIK: 0001308527)

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

Q3 2015
Shares 54,333 Value ($000) $7,548 Avg Close — Range —
Q2 2015
Shares 57,196 Value ($000) $7,907 Avg Close — Range —
Q1 2015
Shares 57,196 Value ($000) $7,907 Avg Close — Range —
Q4 2014
Shares 57,796 Value ($000) $7,934 Avg Close — Range —
Q3 2014
Shares 58,779 Value ($000) $7,995 Avg Close — Range —
Q2 2014
Shares 58,779 Value ($000) $5,965 Avg Close — Range —
Q1 2014
Shares 60,263 Value ($000) $5,627 Avg Close — Range —
Q4 2013
Shares 60,263 Value ($000) $5,665 Avg Close — Range —
Q3 2013
Shares 60,963 Value ($000) $5,200 Avg Close — Range —
Q2 2013
Shares 60,313 Value ($000) $4,850 Avg Close — Range —