# OSMIUM PARTNERS, LLC

OSMIUM PARTNERS, LLC of SAN ANSELMO, CA is an SEC exempt reporting adviser.

## Registration

- CRD: 163789
- Type: SEC exempt reporting adviser
- SEC file number: 802-114792
- Location: 5 ROSS AVE, SAN ANSELMO, CA, 94960
- Phone: 415-785-7703
- Latest filing: 2026-03-31
- Total assets: $19.9M

## Officers, owners & control persons (6)

| Name | Role | Location |
| --- | --- | --- |
| [John Hartnett Lewis](https://search.stillhousedata.com/person/695394) | MANAGING MEMBER | — |
| [Adam P Hoydysh](https://search.stillhousedata.com/person/695395) | PRESIDENT AND CHIEF COMPLIANCE OFFICER | — |
| [LEWIS JOHN HARTNETT](https://search.stillhousedata.com/person/750767) | MANAGING MEMBER; MANAGING PARTNER | — |
| [JAIN NUPUR NMN](https://search.stillhousedata.com/person/816764) | CHIEF OPERATING OFFICER AND CHIEF COMPLIANCE OFFICER | — |
| [JUNCKER DAVID KURT](https://search.stillhousedata.com/person/832452) | CHIEF COMPLIANCE OFFICER; REGULATORY CONTACT PERSON & CHIEF OPERATING OFFICER | — |
| [HOYDYSH ADAM P](https://search.stillhousedata.com/person/900217) | PRESIDENT AND CHIEF COMPLIANCE OFFICER | — |


## Private funds (4)

| Fund | Type | Formed | Owners | GAV | Min investment |
| --- | --- | --- | --- | --- | --- |
| OSMIUM CAPITAL, LP | Hedge Fund | Delaware | 39 | $10.8M | $250K |
| OSMIUM SPARTAN, LP | Hedge Fund | Delaware | 20 | $5.8M | $250K |
| OSMIUM DIAMOND, LP | Hedge Fund | Delaware | 12 | $1.8M | $500K |
| OSMIUM CAPITAL II, LP | Hedge Fund | Delaware | 6 | $1.4M | $1.0M |


## Fund service providers (1)

- administrator: NAV CONSULTING, INC. — 4 funds

## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/163789/brochure
- Similar advisers: https://search.stillhousedata.com/firm/163789/similar
- Related entities: https://search.stillhousedata.com/firm/163789/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/163789

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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.