# BIRCH HILL INVESTMENT ADVISORS LLC

BIRCH HILL INVESTMENT ADVISORS LLC of BOSTON, MA is an SEC-registered investment adviser.

## Registration

- CRD: 143750
- Type: SEC-registered investment adviser
- SEC file number: 801-67818
- Location: ONE INTERNATIONAL PLACE, SUITE 770, BOSTON, MA, 02110
- Phone: 617-502-8300
- Latest filing: 2026-02-25
- Regulatory AUM: $2.9B
- Discretionary AUM: $2.9B
- Clients: 19
- Accounts: 1,388

## Business model

- Compensation: % of AUM, Hourly, Fixed
- Clients served: Individuals, High net worth, Pooled vehicles, Charities

## Officers, owners & control persons (19)

| Name | Role | Location |
| --- | --- | --- |
| Gary Richard Mikula | MANAGING MEMBER/CHIEF EXECUTIVE OFFICER; MANAGING MEMBER/PRESIDENT | — |
| Robert Agnew Oneil | MANAGING MEMBER; MANAGING MEMBER/PRESIDENT | — |
| Paul Joseph Donovan | PRINCIPAL, CHIEF COMPLIANCE OFFICER, COO | — |
| Timothy Michael Malloy | PRINCIPAL | — |
| Catherine M Kennedy | PRINCIPAL | — |
| Brett Anthony Mirliani | PRINCIPAL | — |
| Christopher Paul Mikus | PRINCIPAL | — |
| George Bowen Cook | PRINCIPAL | — |
| CRARY MINER A | MANAGING MEMBER/CLERK | — |
| REILLY THOMAS E | MANAGING MEMBER/CHIEF COMPLIANCE OFFICER | — |
| MIKULA GARY RICHARD | MANAGING MEMBER/PRESIDENT | — |
| ONEIL ROBERT AGNEW | MANAGING MEMBER; MANAGING MEMBER/TREASURER; MANAGING MEMBER/TREASURER/CCO | — |
| REILLY JOSEPH EDWARD | MANAGING MEMBER; MANAGING MEMBER/CHIEF COMPLIANCE OFFICER; MEMBER | — |
| DONOVAN ROBERT JOSEPH | CHIEF COMPLIANCE OFFICER; PRINCIPAL, CHIEF COMPLIANCE OFFICER, COO | — |
| CRARY MINER ALLEN | MANAGING MEMBER/CLERK; MEMBER/CLERK | — |
| STILES JOHN BARRY | MEMBER; MEMBER/CHIEF COMPLIANCE OFFICER | — |
| MALLOY TIMOTHY MICHAEL | PRINCIPAL | — |
| KENNEDY CATHERINE M | PRINCIPAL | — |
| MIRLIANI BRETT ANTHONY | PRINCIPAL | — |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/143750/brochure
- Similar advisers: https://search.stillhousedata.com/firm/143750/similar
- Related entities: https://search.stillhousedata.com/firm/143750/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/143750

---

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.