SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

Westchester Capital Management, LLC's Holding History (CIK: 0001512805)

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

Q3 2015
Shares 897,611 Value ($000) $124,696 Avg Close — Range —
Q2 2015
Shares 888,993 Value ($000) $123,881 Avg Close — Range —
Q1 2015
Shares 850,389 Value ($000) $117,566 Avg Close — Range —
Q4 2014
Shares 847,773 Value ($000) $116,373 Avg Close — Range —
Q3 2014
Shares 601,354 Value ($000) $81,790 Avg Close — Range —