John William Madden is listed as Managing Partner And Sole Limited Partner at Sequel Holdings, L.P. on SEC Form ADV.
Form ADV reports a beneficial ownership band of Over 75%.
| Title | Managing Partner And Sole Limited Partner |
| Ownership | Over 75% |
| Control person | Yes |
| Since | 2002 |
| Title | Owner |
| Ownership | Over 75% |
| Control person | Yes |
| Since | 2002 |