Walton Steve 4
4 · SIGMA ALDRICH CORP · Filed Feb 22, 2011
Insider Transaction Report
Form 4
Walton Steve
VP, EHS, Compliance & Quality
Transactions
- Award
Common Stock, $1 Par Value
2011-02-18$62.49/sh+675$42,181→ 3,096 total
4 · SIGMA ALDRICH CORP · Filed Feb 22, 2011
Common Stock, $1 Par Value