| Date | Event |
|---|
| 9-May-13 | SIGMA ALDRICH CORP Files SEC form 8-K, Submission of Matters to a Vote of Security Holders |
| 25-Apr-13 | SIGMA ALDRICH CORP Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibi |
| 26-Feb-13 | Ex-Date for dividend payment of $0.215 |
| 26-Feb-13 | Ex-Date for dividend payment of $0.215 |
| 15-Feb-13 | SIGMA ALDRICH CORP Files SEC form 8-K, Change in Directors or Principal Officers |
| 14-Feb-13 | SIGMA ALDRICH CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 7-Feb-13 | SIGMA ALDRICH CORP Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibi |
| 7-Jan-13 | SIGMA ALDRICH CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 27-Nov-12 | Ex-Date for dividend payment of $0.20 |
| 19-Nov-12 | SIGMA ALDRICH CORP Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and Exhibits |
| 23-Oct-12 | SIGMA ALDRICH CORP Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibi |
| 19-Sep-12 | SIGMA ALDRICH CORP Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and Exhibits |
| 24-Jul-12 | SIGMA ALDRICH CORP Files SEC form 8-K, Results of Operations and Financial Condition, Change in Directors or Principa |
| 16-May-12 | SIGMA ALDRICH CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Termination of a Material Definiti |
| 3-May-12 | SIGMA ALDRICH CORP Files SEC form 8-K, Amendments to Articles of Inc. or Bylaws; Change in Fiscal Year, Submission of |
| 24-Apr-12 | SIGMA ALDRICH CORP Files SEC form 8-K, Results of Operations and Financial Condition, Regulation FD Disclosure, Finan |