SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q4 2014
Shares 1,608 Value ($000) $221 Avg Close — Range —
Q3 2014
Shares 3,920 Value ($000) $533 Avg Close — Range —
Q2 2014
Shares 4,055 Value ($000) $412 Avg Close — Range —
Q1 2014
Shares 4,665 Value ($000) $436 Avg Close — Range —
Q4 2013
Shares 2,127 Value ($000) $200 Avg Close — Range —
Q3 2013
Shares 1,582 Value ($000) $135 Avg Close — Range —