Richard Arthur Mayo is listed as Capital Member at Grantham Mayo van Otterloo & Co LLC on SEC Form ADV.
Form ADV reports a beneficial ownership band of 5-10%.
| Title | Capital Member |
| Ownership | 5-10% |
| Control person | No |
| Since | 1979 |
| Title | Partner |
| Ownership | 10-25% |
| Control person | No |
| Since | 2008 |