SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

BOKF, NA's Holding History (CIK: 0000009634)

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

Q3 2015
Shares 12,238 Value ($000) $1,700 Avg Close — Range —
Q2 2015
Shares 12,854 Value ($000) $1,791 Avg Close — Range —
Q1 2015
Shares 12,883 Value ($000) $1,781 Avg Close — Range —
Q4 2014
Shares 10,976 Value ($000) $1,506 Avg Close — Range —
Q3 2014
Shares 14,401 Value ($000) $1,959 Avg Close — Range —
Q2 2014
Shares 14,225 Value ($000) $1,443 Avg Close — Range —
Q1 2014
Shares 14,071 Value ($000) $1,314 Avg Close — Range —
Q4 2013
Shares 14,215 Value ($000) $1,337 Avg Close — Range —
Q3 2013
Shares 14,113 Value ($000) $1,204 Avg Close — Range —
Q2 2013
Shares 18,445 Value ($000) $1,483 Avg Close — Range —