# CASTLEARK ALTERNATIVES, LLC

CASTLEARK ALTERNATIVES, LLC of CHICAGO, IL is an SEC-registered investment adviser.

## Registration

- CRD: 288893
- Type: SEC-registered investment adviser
- SEC file number: 801-129953
- Location: 1 N. WACKER DRIVE, SUITE 3950, CHICAGO, IL, 60606
- Phone: 312 456 9682
- Latest filing: 2026-04-01
- Regulatory AUM: $8.2M
- Discretionary AUM: $8.2M
- Clients: 5
- Accounts: 1

## Business model

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

## Officers, owners & control persons (5)

| Name | Role | Location |
| --- | --- | --- |
| [Jerome A Castellini](https://search.stillhousedata.com/person/401752) | PRESIDENT, MANAGING MEMBER | Chicago, IL |
| [Sarah Williams Johnson](https://search.stillhousedata.com/person/686589) | CHIEF COMPLIANCE OFFICER | — |
| [CASTELLINI JEROME A](https://search.stillhousedata.com/person/747520) | PRESIDENT, MANAGING MEMBER | — |
| [CASTELLINI JAMES H](https://search.stillhousedata.com/person/747522) | CHIEF COMPLIANCE OFFICER | — |
| [SIMEK RICHARD J](https://search.stillhousedata.com/person/818610) | CCO | — |


## Private funds (1)

| Fund | Type | Formed | Owners | GAV | Min investment |
| --- | --- | --- | --- | --- | --- |
| CASTLEARK ENERGY PARTNERS, LP | Hedge Fund | Delaware | 2 | $8.2M | $1.0M |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/288893/brochure
- Similar advisers: https://search.stillhousedata.com/firm/288893/similar
- Related entities: https://search.stillhousedata.com/firm/288893/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/288893

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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.