Wealth manager, independent · BAR Harbor, ME
Coston, McIsaac & Shea Financial Advisors
Coston, McIsaac, and Partners Inc. · SEC-registered investment adviser · CRD 194515 · SEC 801-96330
At a glance
Coston, McIsaac & Shea Financial Advisors is an SEC-registered investment adviser based in BAR Harbor, Maine, with $467 million in regulatory assets under management as of its Form ADV filed May 21, 2026. Its largest client group by assets is high-net-worth individuals, and it reports 1,254 individual clients. By Form ADV it is a wealth manager, ranked 3,056th of 8,915 wealth managers and 8,105th of 17,210 SEC-registered advisers by assets.
Main office 207-288-4747costonshea.comAs filed on Form ADV
- Regulatory AUM
- $467M
- Rank among wealth managers
- #3,056 of 8,915
- Rank among all SEC RIAs
- #8,105 of 17,210
- Rank in Maine
- #14 of 32
- Individual clients
- 1,254
- High-net-worth clients
- 235
- Accounts
- 1,254
- Discretionary
- 100% of AUM
- Employees
- 12
- Advisory staff
- 11
- Offices
- 2
Owners and executives on its Form ADV
- Chester G. LloydSecretary-Cco
- Paul A. CostonVice President
- Andrew R. SheaPresident
- Nicholas N. ShawChief Operating Officer
Custody and brokerage
Who it serves
| Client type | Clients | Regulatory AUM | Share |
|---|---|---|---|
| High-net-worth individuals | 235 | $270M | 58% |
| Individuals | 1,019 | $197M | 42% |
Disciplinary disclosures
Coston, McIsaac & Shea Financial Advisors reports no disciplinary disclosures in Item 11 of Form ADV. Read the details on the SEC’s adviser search ↗
Services
- Portfolio management for individuals and small businesses
- Selecting other advisers
- Other services
How it’s paid
- A percentage of assets under management
- Fixed fees
Form ADV and brochures on the SEC’s adviser search ↗costonshea.com ↗
AtlasMembers
The full record on Coston, McIsaac & Shea Financial Advisors
Ten years of SEC filings, its owners and contacts, and how it stacks up against its peers. Atlas members see all of it.
- Assets, accounts, clients and staff, ten years of filings
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- Growth over one, three and five years
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- Rank against 5,631 peers of its type and size
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- Owners and executives, with titles and stakes
- 4 namedLocked
- Main office, fax and compliance officer
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- Filing changes this year, with alerts
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Background
Questions
How much does Coston, McIsaac & Shea Financial Advisors manage?
Coston, McIsaac & Shea Financial Advisors reports $467 million in regulatory assets under management across 1,254 accounts, 100% of it on a discretionary basis, on its Form ADV filed May 21, 2026.
What kind of firm is Coston, McIsaac & Shea Financial Advisors?
Coston, McIsaac & Shea Financial Advisors is a wealth manager by its Form ADV answers. At least half of its regulatory assets are managed for individuals and high-net-worth individuals.
Who are Coston, McIsaac & Shea Financial Advisors’s clients?
By assets, its largest client types are high-net-worth individuals ($270 million, 235 clients); individuals ($197 million, 1,019 clients).
Does Coston, McIsaac & Shea Financial Advisors have any disciplinary history?
Coston, McIsaac & Shea Financial Advisors reports no disciplinary disclosures in Item 11 of its Form ADV. Check the SEC’s adviser search for the latest record.
Where these numbers come from
Every figure is Coston, McIsaac & Shea Financial Advisors’s own answer on its latest Form ADV, from the SEC’s registered-adviser list as of October 1, 2026: regulatory assets and accounts (Item 5.F), clients by type (5.D), employees (5.A and 5.B), compensation (5.E) and services (5.G). Custodians come from Schedule D 5.K(3) of its latest filing (2026-05-21), which lists those holding 10% or more of separately managed account assets and the amount at each. “Hybrid” means some employees are also registered representatives of a broker-dealer (Item 5.B(2)); affiliated broker-dealers are the related persons it lists in Item 7.A and Schedule D. Firm type comes from its own answers: broker-dealer firms are registered broker-dealers themselves (Item 6.A); private fund advisers manage mostly private funds (Item 7.B, 5.D); wealth managers manage at least half their assets for individuals (5.D). Ranks compare it by regulatory assets with every SEC-registered adviser and with firms of its type. Figures are as of the firm’s last annual update, so they can lag recent deals and market moves. Regulatory AUM counts assets the firm continuously supervises and can differ from what a firm markets.
Not an endorsement or a recommendation. Before hiring any adviser, read its Form ADV Part 2A brochure and check its record on the SEC’s adviser search. How to check a financial advisor →