DFX Intelligence
RIA Intelligence
Registered investment advisers, the advisors registered through them, the capital they report, the private vehicles they run and the people who own them, as a graph with a filing date behind every number. RAUM is what the adviser filed, a move is two registration dates, and a class is a rule you can read.
SEC-registered adviser
Coston, Mcisaac & Shea Financial Advisors
Legal name Coston, Mcisaac, And Partners Inc.
Latest filing May 21, 2026
First filing on the tape May 15, 2015 · 31 filings
SEC status approved since May 26, 2015
RAUM
$467M
reported, Item 5.F
Discretionary
100%
of RAUM
Private clients
100%
$467M individuals and HNW
Advisors
10
registered through the firm on IAPD
RAUM per advisor
$46.7M
derived; firm RAUM over IAPD count
Employees
12
11 advisory (5.B.1)
Offices
1
beyond the principal office
Private funds
0
reported on Schedule D
History
31 filings and snapshots on the tape
RAUM$467M as of May 21, 2026
Feb 18, 2016$63.7M then
HNW client RAUM$270M as of May 21, 2026
Mar 1, 2018$41.0M then
State-registered IARs (5.B.3)10 as of May 21, 2026
Feb 18, 20167 then
Employees (5.A)12 as of May 21, 2026
Feb 18, 20167 then
Private funds: no history
RAUM +15% over the last fiscal year+17% a year over threeIARs 10 to 10
Practice profile
derived from the filing of May 21, 2026; every figure names its basis
Archetypes, each a printed rule
- HNW wealth manager · private-client share of RAUM at least 50 percent and HNW share of private-client RAUM 50 to 90 percent
- RAUM per advisor
- $46.7MderivedRAUM over IAPD advisors; not a book size
- Clients per advisor
- 125derivedindividual and HNW clients (5.D) over advisors
- Average HNW client
- $1.1MderivedHNW RAUM over HNW clients
- Average account
- $372,344derivedRAUM over accounts (5.F.2.f)
- Discretionary
- 100%derivedof RAUM
- Institutional
- 0.0%derivedpensions, charities, corporations, government, insurance, banks, other advisers
- Employees per advisor
- 1.2derivedItem 5.A over advisors
- Advisors per office
- 5.0derived2 offices incl. principal (1.F.5)
- RAUM growth, one year
- +15%derivedbetween the last two annual amendments
- Advisor growth, one year
- +0.0%derivedItem 5.B.3 between annual amendments
- Client growth, one year
- -17%derived
- Compensation
- percentage of assets, fixed feesreportedItem 5.E
- Advisory activities
- portfolio management for individuals, selection of other advisers, otherreportedItem 5.G
- Ownership
- no PE, bank or public-company owner found on Schedule Aderived
- Advisor book size
- not public; not estimatedreported
Also answered yes on Form ADV
- buys or sells securities as principal to or from clients (8.A.2)
- has discretionary authority over which securities are bought or sold (8.C.1)
- receives research or other products from a broker-dealer, soft dollars (8.E)
- compensates persons for client referrals (8.G.1)
- compensates non-employees for client referrals (8.G.2)
Where the RAUM sits
Form ADV Item 5.D, latest filing
- High-net-worth individuals$270M58%
- Individuals$197M42%
- Individual clients
- 1,019reported
- HNW clients
- 235reported
- Pension plan clients
- n/areported
- Charitable clients
- n/areported
- Accounts
- 1,254reported
- Financial planning clients
- 0reported
- Wrap fee programs
- noreported
- Custody of client assets
- noreported
- Compensation
- % of AUM, fixedreported
- Class basis
- private_client_share=1.0 fund_share=0.0 institutional_share=0.0 related_bd=false related_bank=false bd_reps=0.0derived
Advisors registered through the firm
7 on IAPD today, longest tenure first
| Name | Branch | Here since | In industry | Prior firms |
|---|---|---|---|---|
| Chester Gary Lloyd | Bar Harbor, Me | Jun 24, 2015 | 25 y | 1 |
| Ronald J Wrobel | Bar Harbor, Me | Aug 21, 2015 | 17 y | 1 |
| Andrew Robert SheaCertified Financial Planner | Bar Harbor, Me | Aug 21, 2015 | 27 y | 1 |
| Ryan Paul WilletteCertified Financial Planner | Bar Harbor, Me | Mar 11, 2021 | 20 y | 4 |
| Nicholas Norman Shaw | Bar Harbor, Me | Jun 2, 2022 | 10 y | 0 |
| Matthew William Mceachern | Bar Harbor, Me | Oct 19, 2023 | 13 y | 0 |
| Michael James Marino | Bar Harbor, Me | Sep 30, 2025 | 15 y | 0 |
Advisor movement
0 left, 0 joined in 12 months
net 0 in 12 months0 left in 90 days0 joined in 90 daysdeparture rate 0.0% of current headcount0 left over 36 months
Left, latest
none on the tape
Joined, latest
- Ryan Paul Willette from Means Wealth ManagementMar 11, 2021 · RIA to RIA
- Ronald J Wrobel from Coston And Mcisaac Investment Advisers, LLCAug 21, 2015 · Other
- Andrew Robert Shea from Signator Investors, Inc.Aug 21, 2015 · Other
- Chester Gary Lloyd from Coston And Mcisaac Investment Advisers, LLCJun 24, 2015 · Other
Teams: two or more advisors moving together within fourteen days, from one state
- 2 joined from Coston And Mcisaac Investment Advisers, LLCJan 22, 2016 · Bar Harbor, Me
Private funds
No private fund reported.
Owners and control persons
Schedule A and B, latest filing
- Arnold Paul Coston · Vice Presidentcontrolsince 03/2015 · owns 10% to 25%
- A. Stephen Coston · Ownercontrolsince 02/2020 · owns 5% to 10%
- Gary Chester Lloyd · Secretary-Ccocontrolsince 03/2015 · owns 10% to 25%
- Robert Andrew Shea · Presidentcontrolsince 07/2015 · owns 50% to 75%
Related persons
Schedule D 7.A
- Coston & Mcisaac Cpa'Sinsurancen
- Coston And Mcisaac Investment Advisers, LLCinvestment advisern
Advisers that list Coston, Mcisaac & Shea Financial Advisors as a related person
- 109730 y
Office movement
IAPD branch city; joins and departures in 12 months
| Office | Advisors | Joined | Left | Teams out | Forming |
|---|---|---|---|---|---|
| Bar Harbor, Me · principal | 10 | 1 | 0 |
Offices
Schedule D 1.F, the 25 largest
- Ellsworth, ME2 employees
What changed
consecutive filings, newest first
- Accounts · 1,513 to 1,254Jun 23, 2025 to Jan 27, 2026
- Advisory employees · 9 to 11Jun 23, 2025 to Jan 27, 2026
- HNW clients · 90 to 235Jun 23, 2025 to Jan 27, 2026
- Individual clients · 1,423 to 1,019Jun 23, 2025 to Jan 27, 2026
- Employees · 10 to 12Jun 23, 2025 to Jan 27, 2026
- Discretionary RAUM · $406M to $467MJun 23, 2025 to Jan 27, 2026
- HNW RAUM · $190M to $270MJun 23, 2025 to Jan 27, 2026
- Individual RAUM · $216M to $197MJun 23, 2025 to Jan 27, 2026
- RAUM · $406M to $467MJun 23, 2025 to Jan 27, 2026
- Financial planning clients · 0 to 0Jan 7, 2025 to Jun 23, 2025
- Accounts · 1,533 to 1,513Nov 26, 2024 to Jan 7, 2025
- Advisory employees · 10 to 9Nov 26, 2024 to Jan 7, 2025
- HNW clients · 88 to 90Nov 26, 2024 to Jan 7, 2025
- Individual clients · 1,445 to 1,423Nov 26, 2024 to Jan 7, 2025
- Employees · 11 to 10Nov 26, 2024 to Jan 7, 2025
- Discretionary RAUM · $425M to $406MNov 26, 2024 to Jan 7, 2025
- HNW RAUM · $194M to $190MNov 26, 2024 to Jan 7, 2025
- Individual RAUM · $231M to $216MNov 26, 2024 to Jan 7, 2025
- RAUM · $425M to $406MNov 26, 2024 to Jan 7, 2025
- Accounts · 1,445 to 1,533Jul 30, 2024 to Nov 26, 2024
- HNW clients · 86 to 88Jul 30, 2024 to Nov 26, 2024
- Individual clients · 1,359 to 1,445Jul 30, 2024 to Nov 26, 2024
- Employees · 10 to 11Jul 30, 2024 to Nov 26, 2024
- Other offices · 0 to 1Jul 30, 2024 to Nov 26, 2024
- Discretionary RAUM · $344M to $425MJul 30, 2024 to Nov 26, 2024
- HNW RAUM · $162M to $194MJul 30, 2024 to Nov 26, 2024
- Individual RAUM · $182M to $231MJul 30, 2024 to Nov 26, 2024
- RAUM · $344M to $425MJul 30, 2024 to Nov 26, 2024
- Accounts · 1,301 to 1,445Sep 21, 2023 to Feb 15, 2024
- HNW clients · 77 to 86Sep 21, 2023 to Feb 15, 2024
- Individual clients · 1,224 to 1,359Sep 21, 2023 to Feb 15, 2024
- Discretionary RAUM · $292M to $344MSep 21, 2023 to Feb 15, 2024
- HNW RAUM · $188M to $162MSep 21, 2023 to Feb 15, 2024
- Individual RAUM · $105M to $182MSep 21, 2023 to Feb 15, 2024
- RAUM · $292M to $344MSep 21, 2023 to Feb 15, 2024
- State-registered IARs · 9 to 10Sep 11, 2023 to Sep 21, 2023
- Accounts · 1,229 to 1,301Sep 2, 2022 to Feb 15, 2023
- Advisory employees · 9 to 10Sep 2, 2022 to Feb 15, 2023
- HNW clients · 75 to 77Sep 2, 2022 to Feb 15, 2023
- Individual clients · 1,154 to 1,224Sep 2, 2022 to Feb 15, 2023
Signals
2 dated events
- A. Stephen Coston (Owner) appeared on Schedule A of Coston, Mcisaac & Shea Financial AdvisorsMar 2, 2020 · Control person joined · fact
- Coston, Mcisaac, And Partners Inc. filed its initial SEC registration (Form ADV)May 15, 2015 · First SEC registration · fact
Across DFX
shared identifiers only, never a name match
No identifier-backed link to the venture, private equity, family office or sponsor graphs.
How to reach
public business contact points only, each with its source
- Business email
- cms@costonshea.comreportedpublished by the firm, firm site, Sep 15, 2026
- Business email
- gary@costonshea.comreportedpublished by the firm, firm site, Sep 15, 2026
- Business email
- maclean@costonshea.comreportedpublished by the firm, firm site, Sep 15, 2026
- Business phone
- 207-288-2159reportedpublished by the firm, firm site, Sep 15, 2026
- Business phone
- 207-288-4747reportedpublished by the firm, firm site, Sep 15, 2026
- Business phone
- 207-288-9458reportedpublished by the firm, firm site, Sep 15, 2026
- Website
- COSTONSHEA.COMreportedpublic record, Form ADV, Sep 17, 2026
- Principal office phone
- 207-288-4747reportedpublic record, Form ADV, May 21, 2026
- Contact form
- costonshea.com/contactreportedpublished by the firm, firm site, Sep 15, 2026
- Team page
- costonshea.com/our-teamreportedpublished by the firm, firm site, Sep 15, 2026
Provenance
- Form ADV
- SEC filing data 2011 to 2024 and the monthly roster 2025 onreportedadviserinfo.sec.gov
- Advisors
- IAPD individual compilation feed, dailyreportedadviserinfo.sec.gov
- Class
- Independent wealth managerderiveda rule over Items 5.D and 7.A
- RAUM per advisor
- $46.7Mderivedfirm RAUM over the IAPD count; not a book size
- Loaded
- Sep 14, 2026