Thomas Gayner - Markel Asset Management
Holding/activity history for Sigma-Aldrich (SIAL)
| Period | Shares | % of Portfolio | Activity | % Change to Portfolio | Reported Price |
| 2014 Q4 | 0 | 0 | Sell 100.00% | 0.07 | |
| 2014 Q3 | 18,000 | 0.07 | Add 200.00% | 0.05 | $136.00 |
| 2014 Q2 | 6,000 | 0.02 | Buy | 0.02 | $101.50 |