SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q3 2015
Shares 201,361 Value ($000) $27,973 Avg Close — Range —
Q2 2015
Shares 201,361 Value ($000) $28,060 Avg Close — Range —
Q1 2015
Shares 205,761 Value ($000) $28,446 Avg Close — Range —
Q4 2014
Shares 208,030 Value ($000) $28,556 Avg Close — Range —
Q3 2014
Shares 208,619 Value ($000) $28,374 Avg Close — Range —
Q2 2014
Shares 210,206 Value ($000) $21,332 Avg Close — Range —
Q1 2014
Shares 218,769 Value ($000) $20,429 Avg Close — Range —
Q4 2013
Shares 227,098 Value ($000) $21,349 Avg Close — Range —
Q3 2013
Shares 237,161 Value ($000) $20,230 Avg Close — Range —
Q2 2013
Shares 245,284 Value ($000) $19,726 Avg Close — Range —