John Morgen Montgomery is listed as Chief Operating Officer at Westfield Capital Management Company, L.P. on SEC Form ADV.
Form ADV reports a beneficial ownership band of Under 5%.
| Title | Chief Operating Officer |
| Ownership | Under 5% |
| Control person | Yes |
| Since | 2015 |
| Title | Member Of Management Committee |
| Ownership | — |
| Control person | Yes |
| Since | 2013 |