# WILLIAM HENRY LEDER

WILLIAM HENRY LEDER is an investment adviser representative (IAR) with state registration records since 2003, appearing at 3 firms. Currently registered with MARINER, LLC.

## Registration history (3)

| Firm | From | To | Current |
| --- | --- | --- | --- |
| [MARINER, LLC](https://search.stillhousedata.com/firm/140195) | 2022-01-03 | present | Yes |
| [CASCADIA ADVISORY SERVICES, LLC](https://search.stillhousedata.com/firm/290231) | 2019-01-04 | 2022-01-28 | — |
| [SECURITY FIRST ADVISORS](https://search.stillhousedata.com/firm/117502) | 2003-07-14 | 2019-01-02 | — |

## More

- [This representative on SEC IAPD (source of record)](https://adviserinfo.sec.gov/individual/summary/3025254)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/rep/3025254.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

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.