SourcingSourcing

WINTHROP ADVISORY GROUP, LLC

C42
CRD 288178·SEC 801-110461·BOSTON, MA
AUM
$3.10B
$1B+
Est. Revenue
$31.0M
@ 1% on AUM
Est. EBITDA
$9.3M
@ 30% margin
Est. Deal Value
$74.4M
@ 8× EBITDA

Identity

Registrations & legal identity

Legal name
WINTHROP ADVISORY GROUP, LLC
CRD
288178
SEC file #
801-110461
EIN
820994658
DBA names
Winthrop Wealth

Economics

AUM
$3.10B
AUM band
$1B+
AUM trajectory
'20'26
$1.06B → $3.10B▲ +193%
Client mix
Individuals Other1,662
Individuals High Net Worth743
Corporations37
Pension Profit Sharing Plans20
Charitable Organizations19

Operations

Employees (total)
38
Advisory staff (per ADV)
25
Advisory staff (5-yr trend)
'20'26
13 advisors → 25 advisors▲ +92%
Primary office
BOSTON MA
Branches
—

Custodian & Brokerage

Primary custodian
LPL Financialmedium confidence
Services offered
Financial planningPortfolio mgmt — individualsPortfolio mgmt — businessesPension consulting
Fee basis
% of AUMHourly chargesFixed feesOther Compensation

Filings

Latest ADV filing
03/31/2026
ADV-W filed at
—
Website
youtube.com/@winthropwealth

Compliance

Disclosures (firm)
0
Trademark
—
Additional signalsExpand ▾

Ownership & succession ★

Who controls the firm + pre-computed succession flags

Top Owner Name
WINTHROP, EARL, BRYAN
Top Owner Pct
37.5
Top Owner Entity Kind
I
Owner Count
10
Control Persons
WINTHROP, EARL, BRYAN
WINTHROP, MARK, STEVEN
Solo Advisor Indicator
No
Succession Risk Solo Owner
No
Is Parent Owned Subsidiary
No

Availability / M&A ★

Already-acquired = skip; deal comps

Adv W Filed
No

Web presence ★

Stale website = winding down

Web Signal Quality
fallback_guess:winthrop.com

Retirement-plan book (Form 5500) ★

401(k)/plan business — cross-sell value

Retirement Plan Book
Yes
Form 5500 Plan Count
1
Form 5500 Total Participants
23
Form 5500 Compensation Trajectory 3y
20240
Form 5500 Plan Count Trajectory 3y
20241
Schedule C Service Provider Rows
1

SEC EDGAR

Edgar Cik
0001739043
Edgar Registered
Yes
Edgar Filing Count
40
Edgar First Filing Date
2018-05-01
Edgar Last Filing Date
2026-04-13
Edgar 13f Count
38
Edgar 13f Latest AUM Estimate
Filing Date2026-04-13
Accession0001739043-26-000004

Compliance & brand

Firm Registration Status
active

All other collected signals (12)

Everything else we've pulled for this record, not yet curated into a section.

Adv W Recently Filed
No
Bc Firm Active Bc Count
0
Bc Firm Active IA Count
27
Bc Firm IAR Count
27
Custodian Candidates
Window
Lpl Financial1
Full
Lpl Financial5
E*trade4
Edgar Addresses
Mailing
321 COLUMBUS AVE3RD FLOORBOSTON, MA 02116
Business
321 COLUMBUS AVE3RD FLOORBOSTON, MA 02116
Edgar EIN
820994658
Edgar Recent Filings
13F-HR2026-04-13 · 0001739043-26-000004
13F-HR/A2026-01-21 · 0001739043-26-000003
Firm Has Custody
Yes
Mailing Office Differs
No
Top Owner CRD
1257625
Trust Company Affiliate
No

People (28)

28
WINTHROP, MARK, STEVEN
IAR · Direct Owner · 37.5%
1351181
WINTHROP, EARL, BRYAN
IAR · Direct Owner · 37.5%
1257625
ST. ONGE, PPC, RICHARD, CHARLES
IAR · Executive Officer · 2.5%
4643907
MURPHY, ANDREW, JOSEPH
IAR · Executive Officer · 2.5%
5523054
WINTHROP, MAX, GUSTAV
IAR · Executive Officer · 2.5%
5972623
WINTHROP, LUCAS, ALEXANDER
IAR · Executive Officer · 2.5%
6173661
SLAUGHTER, HARVEY, ALAN
IAR · Executive Officer · 2.5%
6338982
BANCHICK, MICHAEL, G.
Executive Officer · 2.5%
6738666
SHEENA ANNE OBEROI
IAR
5121268
Sean Winthrop
IAR
7531188
Matthew Joseph McGrath
IAR
6223871
RICHARD ANDREW BOEHM
IAR
2365186
KENNETH JAMES DEAN
IAR
4567381
ROBERT ABENDROTH
IAR
6401139
AMBER MICHELE MOSER
IAR
6382815
DAVID WILLIAM MERCER
IAR
2521613
EDWARD THOMAS BURKE
IAR
2831897
PETER THOMAS JAWORSKI
IAR
2924203
SCOTT COHEN
IAR
5662667
GREGORY PAUL COSTANTINO
IAR
4354102
ROBERT ERIC ZOLA
IAR
2553407
Daniel L Castle
IAR
1716154
ROBERT JAMES REAMER
IAR
5200308
Francesca M Lanza
IAR
7203898
AIMEE MARGARET LLOYD
IAR
4520285
JONATHAN PETER HUNTER
IAR
5690569
DAVID MICHAEL MORETSKY
IAR
4267143
Cavan M Lamontagne
IAR
7386869