PORWOLL JOE 4
4 · SIGMA ALDRICH CORP · Filed Dec 2, 2009
Insider Transaction Report
Form 4
PORWOLL JOE
VP, Milwaukee Operations
Transactions
- Gift
Common Stock, $1 Par Value
2009-12-01$53.95/sh−100$5,395→ 8,740 total
4 · SIGMA ALDRICH CORP · Filed Dec 2, 2009
Common Stock, $1 Par Value