# NORTHSTAR ASSET MANAGEMENT LLC

NORTHSTAR ASSET MANAGEMENT LLC of BERKELEY HEIGHTS, NJ is an SEC-registered investment adviser.

## Registration

- CRD: 129112
- Type: SEC-registered investment adviser
- SEC file number: 801-121388
- Location: 200 CONNELL DRIVE, SUITE 1000, BERKELEY HEIGHTS, NJ, 07922
- Phone: 908-850-9991
- Latest filing: 2026-03-31
- Regulatory AUM: $347.9M
- Discretionary AUM: $347.9M
- Clients: 10
- Accounts: 1,072

## Business model

- Compensation: % of AUM, Fixed
- Clients served: Individuals, High net worth, Pensions

## Officers, owners & control persons (12)

| Name | Role | Location |
| --- | --- | --- |
| Christopher Tyler Diederich | MEMBER | — |
| Andrew Jameson Peters | CHIEF COMPLIANCE OFFICER/CHIEF EXECUTIVE OFFICER; MEMBER | — |
| Christopher Matthew Griest | MEMBER | — |
| Susan Lee O'Brien | MEMBER | — |
| David Leszczynski | MEMBER | — |
| PAOLONI JOHN KEITH | OWNER/CHIEF COMPLIANCE OFFICER; PRESIDENT | — |
| O'BRIEN SUSAN LEE | MEMBER | — |
| DIEDERICH CHRISTOPHER TYLER | MEMBER | — |
| PETERS ANDREW JAMESON | CHIEF COMPLIANCE OFFICER/CHIEF EXECUTIVE OFFICER; MEMBER | — |
| GRIEST CHRISTOPHER MATTHEW | MEMBER | — |
| Leszczynski David | MEMBER | — |
| Andrew Peters | MEMBER | Provo, UT |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/129112/brochure
- Similar advisers: https://search.stillhousedata.com/firm/129112/similar
- Related entities: https://search.stillhousedata.com/firm/129112/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/129112

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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.