SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

VIRGINIA RETIREMENT SYSTEMS ET AL's Holding History (CIK: 0001005354)

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

Q3 2015
Shares 64,220 Value ($000) $8,921 Avg Close — Range —
Q2 2015
Shares 64,190 Value ($000) $8,945 Avg Close — Range —
Q1 2015
Shares 64,181 Value ($000) $8,873 Avg Close — Range —
Q4 2014
Shares 63,448 Value ($000) $8,710 Avg Close — Range —
Q3 2014
Shares 63,445 Value ($000) $8,629 Avg Close — Range —
Q2 2014
Shares 63,435 Value ($000) $6,437 Avg Close — Range —
Q1 2014
Shares 63,427 Value ($000) $5,923 Avg Close — Range —
Q4 2013
Shares 62,528 Value ($000) $5,878 Avg Close — Range —
Q3 2013
Shares 62,163 Value ($000) $5,303 Avg Close — Range —
Q2 2013
Shares 64,786 Value ($000) $5,210 Avg Close — Range —