# THIRD STAGE INVESTMENT GROUP, LLC

THIRD STAGE INVESTMENT GROUP, LLC of BELLEVUE, WA is an SEC-registered investment adviser.

## Registration

- CRD: 141951
- Type: SEC-registered investment adviser
- SEC file number: 801-67208
- Location: 400 112TH AVENUE NE, SUITE 130, BELLEVUE, WA, 98004-5542
- Phone: 425-284-7200
- Latest filing: 2026-03-24
- Clients: 3

## Business model

- Compensation: % of AUM
- Clients served: Pooled vehicles

## Officers, owners & control persons (7)

| Name | Role | Location |
| --- | --- | --- |
| [Jolanta Margaret Wysocka](https://search.stillhousedata.com/person/415547) | CEO | Bellevue, WA |
| [Mark Ernest Miller](https://search.stillhousedata.com/person/415548) | CHIEF COMPLIANCE OFFICER, COO, MANAGING MEMBER | Bellevue, WA |
| [Ronald George Layardliesching](https://search.stillhousedata.com/person/702604) | CHAIRMAN, CIO | — |
| [DOLAN CHARLES PATRICK](https://search.stillhousedata.com/person/761620) | MANAGING DIRECTOR OF RESEARCH AND TRADING | — |
| [MILLER JAMES ERNEST](https://search.stillhousedata.com/person/763156) | CHIEF COMPLIANCE OFFICER, COO, MANAGING MEMBER | — |
| [WYSOCKA JOLANTA MARGARET](https://search.stillhousedata.com/person/794712) | CEO | — |
| [LAYARDLIESCHING RONALD GEORGE](https://search.stillhousedata.com/person/797595) | CHAIRMAN, CIO | — |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/141951/brochure
- Similar advisers: https://search.stillhousedata.com/firm/141951/similar
- Related entities: https://search.stillhousedata.com/firm/141951/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/141951

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Source: public SEC Form ADV 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.