SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

STATE OF MICHIGAN RETIREMENT SYSTEM's Holding History (CIK: 0000762152)

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

Q3 2015
Shares 43,095 Value ($000) $5,987 Avg Close — Range —
Q2 2015
Shares 46,295 Value ($000) $6,451 Avg Close — Range —
Q1 2015
Shares 46,095 Value ($000) $6,373 Avg Close — Range —
Q4 2014
Shares 49,095 Value ($000) $6,739 Avg Close — Range —
Q3 2014
Shares 48,795 Value ($000) $6,637 Avg Close — Range —
Q2 2014
Shares 48,695 Value ($000) $4,942 Avg Close — Range —
Q1 2014
Shares 48,795 Value ($000) $4,556 Avg Close — Range —
Q4 2013
Shares 48,695 Value ($000) $4,578 Avg Close — Range —
Q3 2013
Shares 48,895 Value ($000) $4,171 Avg Close — Range —
Q2 2013
Shares 48,895 Value ($000) $3,929 Avg Close — Range —