William Philip Sieg is listed as Elected Manager at J.P. Morgan Securities LLC on SEC Form ADV.
Form ADV reports a beneficial ownership band of Under 5%.
| Title | Elected Manager |
| Ownership | Under 5% |
| Control person | Yes |
| Since | 2021 |
| Title | Manager And President |
| Ownership | Under 5% |
| Control person | Yes |
| Since | 2024 |