# MAIN STREET RESEARCH LLC

MAIN STREET RESEARCH LLC of LAKEVILLE, CT is an SEC-registered investment adviser.

## Registration

- CRD: 114629
- Type: SEC-registered investment adviser
- SEC file number: 801-57739
- Location: 342 MAIN STREET, LAKEVILLE, CT, 06039
- Phone: 860.435.2350
- Latest filing: 2026-04-27
- Regulatory AUM: $2.7B
- Discretionary AUM: $2.7B
- Clients: 24
- Accounts: 3,017

## Business model

- Compensation: % of AUM, Performance
- Clients served: Individuals, High net worth, Pooled vehicles, Other

## Officers, owners & control persons (12)

| Name | Role | Location |
| --- | --- | --- |
| James Edmund Demmert | MANAGING PARTNER AND CHIEF INVESTMENT OFFICER | — |
| Benjamin B Armellini | MANAGING PARTNER- EAST, PORTFOLIO MANAGER; PARTNER - CHIEF EXECUTIVE OFFICER | — |
| Aaron Michael Stern | MANAGING PARTNER AND  PORTFOLIO MANAGER; MANAGING PARTNER -WEST, PORTFOLIO MANAGER | — |
| Natalie Elaine Mcmahon | CHIEF COMPLIANCE OFFICER; MANAGING PARTNER; PARTNER AND CHIEF OPERATING OFFICER | — |
| STERN JOHN MICHAEL | MANAGING PARTNER -WEST, PORTFOLIO MANAGER; PARTNER - LEAD TRADER, PORTFOLIO MANAGER; PARTNER - PORTFOLIO MANAGER | — |
| DEMMERT JAMES EDMUND | MANAGING PARTNER; MANAGING PARTNER AND CHIEF INVESTMENT OFFICER; MANAGING PARTNER-CHIEF COMPLIANCE OFFICER | — |
| STERN TAMRA ANN | CHIEF COMPLIANCE OFFICER; PARTNER, DIRECTOR - WEALTH MANAGEMENT | — |
| POMBRA MANOJ KUMAR | CHIEF COMPLIANCE OFFICER | — |
| MITTELMAN CHARITO ARROYO | CHIEF COMPLIANCE OFFICER; CHIEF COMPLIANCE OFFICER, GENERAL COUNSEL | — |
| ARMELLINI BENJAMIN B | MANAGING PARTNER- EAST, PORTFOLIO MANAGER; PARTNER, PORTFOLIO MANAGER | — |
| McMahon Natalie Elaine | CHIEF COMPLIANCE OFFICER; CHIEF OPERATING OFFICER; PARTNER AND CHIEF OPERATING OFFICER | — |
| Lily Nicole Taft | CHIEF STRATEGY OFFICER; MANAGING PARTNER | — |


## Branch offices (4)

| City | State | Employees | Phone |
| --- | --- | --- | --- |
| GREENWICH | CT | 5 | 203-341-3848 |
| SAUSALITO | CA | 5 | 800 357 3863 |
| LAKEVILLE | CT | 1 | 415-426-2582 |
| NEW YORK | NY | 1 | 646-731-1464 |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/114629/brochure
- Similar advisers: https://search.stillhousedata.com/firm/114629/similar
- Related entities: https://search.stillhousedata.com/firm/114629/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/114629

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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.