# O'BRIEN INVESTMENT MANAGEMENT, LLC

O'BRIEN INVESTMENT MANAGEMENT, LLC of TORRANCE, CA is an SEC-registered investment adviser.

## Registration

- CRD: 284057
- Type: SEC-registered investment adviser
- SEC file number: 801-118289
- Location: 24594 HAWTHORNE BLVD., TORRANCE, CA, 90505
- Phone: 310-363-2360
- Latest filing: 2026-03-31
- Regulatory AUM: $254.3M
- Discretionary AUM: $254.3M
- Clients: 3
- Accounts: 334

## Business model

- Compensation: % of AUM
- Clients served: High net worth

## Officers, owners & control persons (5)

| Name | Role | Location |
| --- | --- | --- |
| MICHAEL DENNIS O'BRIEN | PRESIDENT, CHIEF COMPLIANCE OFFICER | LOS ANGELES, CA |
| John Shiels O'Brien | PARTNER | — |
| OBRIEN MICHAEL DENNIS | PRESIDENT, CHIEF COMPLIANCE OFFICER | — |
| O'BRIEN MICHAEL DENNIS | PRESIDENT, CHIEF COMPLIANCE OFFICER | — |
| O'Brien John Shiels | PARTNER | — |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/284057/brochure
- Similar advisers: https://search.stillhousedata.com/firm/284057/similar
- Related entities: https://search.stillhousedata.com/firm/284057/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/284057

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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.