| Year | Company | Subject | Sector | Filers | Outcome |
|---|---|---|---|---|---|
| Year | Company | Subject | Sector | Filers | Outcome |
| 2017 | Pioneer Natural Resources | Hydraulic Fracturing | Energy Production | Miller/Howard Investments | Withdrawn in response to corporate… |
| 2014 | Pioneer Natural Resources | Hydraulic Fracturing | Energy Production | Calvert Investments | Withdrawn in response to corporate… |
| 2013 | Pioneer Natural Resources | Hydraulic Fracturing | Energy Production | Calvert Investments | Vote: 42% |
