JOHN L COSTELLO is an investment adviser representative (IAR) with state registration records since 2006, appearing at 2 firms. Currently registered with OSAIC ADVISORY SERVICES, LLC.
| Firm | From | To | Current |
|---|---|---|---|
| OSAIC ADVISORY SERVICES, LLC | 2024-10-15 | present | Yes |
| AMERICAN PORTFOLIOS ADVISORS, INC | 2006-10-04 | 2024-10-11 | — |