PORWOLL JOE 4
4 · SIGMA ALDRICH CORP · Filed Nov 8, 2010
Insider Transaction Report
Form 4
PORWOLL JOE
VP, Milwaukee Operations
Transactions
- Exercise/Conversion
ISO Stock Option Right To Buy
2010-11-04−4,100→ 3,700 totalExercise: $25.32From: 2003-05-07Exp: 2012-05-07→ Common Stock (4,100 underlying) - Sale
Common Stock
2010-11-04$66.00/sh−4,100$270,600→ 10,240 total - Exercise/Conversion
Common Stock
2010-11-04$41.62/sh+4,100$170,642→ 14,340 total