

| SIGMA-ALDRICH CORPORATION | 07/05/2013 AGM | |
|---|---|---|
| 1.a | Re-elect Rebecca M. Bergman | For |
| 1.b | Re-elect George M. Church | For |
| 1.c | Elect Michael L. Marberry | For |
| 1.d | Re-elect W. Lee McCollum | Oppose |
| 1.e | Re-elect Avi M. Nash | For |
| 1.f | Re-elect Steven M. Paul | For |
| 1.g | Re-elect J. Pedro Reinhard | Oppose |
| 1.h | Re-elect Rakesh Sachdev | For |
| 1.i | Re-elect D. Dean Spatz | Oppose |
| 1.j | Re-elect Barrett A. Toan | Oppose |
| 2 | Appoint the auditors | For |
| 3 | Approve Pay Structure | Abstain |