# SUNSTONE PARTNERS MANAGEMENT, LLC

SUNSTONE PARTNERS MANAGEMENT, LLC of SAN MATEO, CA is an SEC-registered investment adviser.

## Registration

- CRD: 305064
- Type: SEC-registered investment adviser
- SEC file number: 801-117367
- Location: 400 S. EL CAMINO REAL, SUITE 1500, SAN MATEO, CA, 94402
- Phone: 1-650-289-4400
- Latest filing: 2026-07-02
- Regulatory AUM: $1.6B
- Discretionary AUM: $1.6B
- Clients: 39
- Accounts: 8

## Business model

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

## Officers, owners & control persons (12)

| Name | Role | Location |
| --- | --- | --- |
| [Howard Sheldon Zeprun](https://search.stillhousedata.com/person/698715) | GENERAL COUNSEL AND CHIEF COMPLIANCE OFFICER | — |
| [Arneek Arun Multani](https://search.stillhousedata.com/person/713977) | CO-FOUNDER AND MANAGING PARTNER; LP | — |
| [Michael Lawrence Biggee](https://search.stillhousedata.com/person/713978) | CO-FOUNDER AND MANAGING PARTNER; LP | — |
| [Gustavo M Alberelli](https://search.stillhousedata.com/person/713979) | CO-FOUNDER AND MANAGING PARTNER; LP | — |
| [Nestor Ivan Olmo](https://search.stillhousedata.com/person/713980) | CHIEF FINANCIAL OFFICER | — |
| [OLMO NESTOR IVAN](https://search.stillhousedata.com/person/855920) | CHIEF FINANCIAL OFFICER | — |
| [MORAGNE JOHN HUTCHINS](https://search.stillhousedata.com/person/857220) | MANAGING DIRECTOR | — |
| [MULTANI ARNEEK ARUN](https://search.stillhousedata.com/person/857221) | CO-FOUNDER AND MANAGING PARTNER; LP; MANAGING DIRECTOR | — |
| [BIGGEE MICHAEL LAWRENCE](https://search.stillhousedata.com/person/857222) | CO-FOUNDER AND MANAGING PARTNER; LP; MANAGING DIRECTOR | — |
| [ALBERELLI GUSTAVO M](https://search.stillhousedata.com/person/857223) | CO-FOUNDER AND MANAGING PARTNER; LP; MANAGING DIRECTOR | — |
| [ZEPRUN HOWARD SHELDON](https://search.stillhousedata.com/person/857224) | GENERAL COUNSEL AND CHIEF COMPLIANCE OFFICER | — |
| [Gunn Jennifer Lynn](https://search.stillhousedata.com/person/857225) | CHIEF FINANCIAL OFFICER | — |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/305064/brochure
- Similar advisers: https://search.stillhousedata.com/firm/305064/similar
- Related entities: https://search.stillhousedata.com/firm/305064/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/305064

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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.