# MOUNTAINEER PARTNERS MANAGEMENT, LLC

MOUNTAINEER PARTNERS MANAGEMENT, LLC of NEW YORK, NY is an SEC-registered investment adviser.

## Registration

- CRD: 163089
- Type: SEC-registered investment adviser
- SEC file number: 801-78304
- Location: 950 THIRD AVENUE, NEW YORK, NY, 10022
- Phone: 646-459-7064
- Latest filing: 2026-03-31
- Regulatory AUM: $305.7M
- Discretionary AUM: $305.7M
- Clients: 4
- Accounts: 5

## Business model

- Compensation: % of AUM, Performance
- Clients served: Pooled vehicles, Investment cos

## Officers, owners & control persons (8)

| Name | Role | Location |
| --- | --- | --- |
| Mark M Lee | MANAGING MEMBER | — |
| Gregory Stephen Williams | CHIEF COMPLIANCE OFFICER | — |
| SIMON MARC DAVID | CHIEF FINANCIAL OFFICER/CHIEF COMPLIANCE OFFICER | — |
| WILLIAMS MARK STEPHEN | CHIEF COMPLIANCE OFFICER; MEMBER | — |
| BORTON BENJAMIN ALEXANDER | PRINCIPAL | — |
| LEE MARK M | MANAGING MEMBER | — |
| HALLOWELL JOHN P | MEMBER | — |
| BORENSTEIN DANIEL | CHIEF COMPLIANCE OFFICER / CHIEF FINANCIAL OFFICER | — |


## Private funds (3)

| Fund | Type | Formed | Owners | GAV | Min investment |
| --- | --- | --- | --- | --- | --- |
| MOUNTAINEER MASTER FUND, LTD. | Hedge Fund | Cayman Islands | 15 | $97.2M | $1.0M |
| MOUNTAINEER PARTNERS, LP | Hedge Fund | Delaware | 10 | $39.7M | $1.0M |
| MOUNTAINEER OFFSHORE FUND, LTD. | Hedge Fund | Cayman Islands | 4 | $38.6M | $1.0M |


## Fund service providers (3)

- administrator: SS&C FINANCIAL SERVICES, LLC
- administrator: SS&C FUND SERVICES (CAYMAN) LTD
- administrator: SS&C FUND SERVICES (CAYMAN) LTD.

## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/163089/brochure
- Similar advisers: https://search.stillhousedata.com/firm/163089/similar
- Related entities: https://search.stillhousedata.com/firm/163089/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/163089

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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.