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AUSTIN CALVERT & FLAVIN INC
> SIAL
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 12/31/2011 | SIGMA ALDRICH CORP | SIAL | 84,345 | -1,960 | 5,268,189 | -64,811 | $62.46 |
| 09/30/2011 | SIGMA ALDRICH CORP | SIAL | 86,305 | 5,775 | 5,333,000 | -576,291 | $61.79 |
| 06/30/2011 | SIGMA ALDRICH CORP | SIAL | 80,530 | 13,280 | 5,909,291 | 1,629,501 | $73.38 |
| 03/31/2011 | SIGMA ALDRICH CORP | SIAL | 67,250 | -2,735 | 4,279,790 | -378,210 | $63.64 |
| 12/31/2010 | SIGMA ALDRICH CORP | SIAL | 69,985 | -4,645 | 4,658,000 | 151,841 | $66.56 |
| 09/30/2010 | SIGMA ALDRICH CORP | SIAL | 74,630 | -6,932,870 | 4,506,159 | 1,014,322 | $60.38 |
| 06/30/2010 | SIGMA ALDRICH CORP | SIAL | 7,007,500 | 7,007,500 | 3,491,837 | 3,491,837 | $0.50 |
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