SPATZ D DEAN 4
4 · SIGMA ALDRICH CORP · Filed Mar 2, 2011
Insider Transaction Report
Form 4
SPATZ D DEAN
Director
Transactions
- Sale
Common Stock
2011-02-28$63.31/sh−2,743$173,647→ 34,857 total - Exercise/Conversion
NQ Stock Option Right To Buy
2011-02-28−4,000→ 0 totalExercise: $23.46From: 2001-08-02Exp: 2011-05-02→ Common Stock (4,000 underlying) - Exercise/Conversion
Common Stock
2011-02-28$23.46/sh+4,000$93,840→ 37,600 total