WILLIAM MICHAEL O'BRIEN is an investment adviser representative (IAR) with state registration records since 2003, appearing at 2 firms. Currently registered with F L PUTNAM INVESTMENT MANAGEMENT CO..
| Firm | From | To | Current |
|---|---|---|---|
| F L PUTNAM INVESTMENT MANAGEMENT CO. | 2020-12-15 | present | Yes |
| COLUMBIA MANAGEMENT ADVISORS, INC. | 2003-10-22 | 2004-09-08 | — |