RICHTER KIRK A 4
4 · SIGMA ALDRICH CORP · Filed Feb 22, 2011
Insider Transaction Report
Form 4
RICHTER KIRK A
Treasurer
Transactions
- Award
Common Stock, $1 Par Value
2011-02-18$62.49/sh+675$42,181→ 78,557 total
4 · SIGMA ALDRICH CORP · Filed Feb 22, 2011
Common Stock, $1 Par Value