# William J Sosniecki

William J Sosniecki is an investment adviser representative (IAR) with state registration records since 2023, appearing at 3 firms. Currently registered with PERENNIAL FINANCIAL SERVICES.

## Registration history (3)

| Firm | From | To | Current |
| --- | --- | --- | --- |
| [PERENNIAL FINANCIAL SERVICES](https://search.stillhousedata.com/firm/286477) | 2025-11-03 | present | Yes |
| [AMERIPRISE FINANCIAL SERVICES, LLC](https://search.stillhousedata.com/firm/6363) | 2025-03-20 | 2025-09-12 | — |
| [MORGAN STANLEY SMITH BARNEY LLC](https://search.stillhousedata.com/firm/149777) | 2023-03-16 | 2025-04-01 | — |

## More

- [This representative on SEC IAPD (source of record)](https://adviserinfo.sec.gov/individual/summary/7682050)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/rep/7682050.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.