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WINTHROP WEALTH
Legal name: WINTHROP ADVISORY GROUP, LLC
CRD 288178File 801-110461
APPROVED
Retail clients
Custody
Filing as of Sep 30, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$3.10B
Top 25% of cohort (national)
Discretionary AUM
$3.07B
Non-discretionary $26.9M
Clients
2,481
4,369 accounts
Employees
40
Above cohort median in MA
Identity & registration
ADV Item 1- Organization form
- Limited Liability Company
- Firm type
- Registered
- SEC region
- BRO
- Registration date
- Apr 28, 2017
- Principal office
- 321 COLUMBUS AVE, 3RD FL, BOSTON, MA, 02116-5168
- Phone
- 617-530-1010
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $3.10B
- Discretionary AUM
- $3.07B
- Non-discretionary AUM
- $26.9M
- Discretionary accounts
- 4,350
- Non-discretionary accounts
- 19
- Total accounts
- 4,369
- AUM per client
- $1.3M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Other | 37 | $91.9M |
| Non-U.S. persons | Fewer than 5 | $0 |
| Insurance companies | Fewer than 5 | $0 |
| Charitable organizations | 19 | $23.9M |
| Other investment advisers | Fewer than 5 | $0 |
| High net worth individuals | 743 | $2.49B |
| Banking or thrift institutions | Fewer than 5 | $0 |
| Pension and profit sharing plans | 20 | $51.5M |
| State or municipal government entities | Fewer than 5 | $0 |
| Individuals (other than high net worth individuals) | 1,662 | $440.0M |
Compensation & activities
ADV Items 5E, 5GCompensation
- Other
- Fixed fees
- Hourly charges
- Other (described) — % RETIREMENT PLANS UNDER ADVISEMENT
- A percentage of assets under your management
Advisory activities
- Financial planning services
- Selection of other advisers
- Portfolio management for other
- Portfolio management for businesses
- Portfolio management for individuals and/or small businesses
Custody
ADV Item 9- Firm Custody Cash
- Yes
- Firm Custody Assets
- No
- Firm Custody Clients
- No
- Firm Custody Securities
- No
- Related Person Custody Cash
- No
- Related Person Custody Assets
- No
- Related Person Custody Clients
- No
- Related Person Custody Securities
- No
Disclosure events
ADV Item 11This firm answered no to every Item 11 disclosure question in this filing.
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Jul 1, 2026 | Employees | 38 | 40 | increased by2 |
| Apr 1, 2026 | Employees | 36 | 38 | increased by2 |
| Apr 1, 2026 | Clients | 2,117 | 2,481 | increased by364 |
| Apr 1, 2026 | AUM | $2,600,886,145 | $3,101,361,784 | increased by$500,475,639 |
| Apr 1, 2026 | Accounts | 3,872 | 4,369 | increased by497 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 22 | 36 | increased by14 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 1,117 | 2,117 | increased by1,000 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $1,853,446,171 | $2,600,886,145 | increased by$747,439,974 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 2,358 | 3,872 | increased by1,514 |
| Apr 1, 2022 | Employees | 21 | 22 | increased by1 |
| Apr 1, 2022 | Clients | 954 | 1,117 | increased by163 |
| Apr 1, 2022 | AUM | $1,556,527,293 | $1,853,446,171 | increased by$296,918,878 |
| Apr 1, 2022 | Accounts | 2,138 | 2,358 | increased by220 |
| Apr 1, 2021 | Registration | — | APPROVED |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “WINTHROP WEALTH” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“WINTHROP WEALTH” may also match similarly-named firms). Confirm identity against each filing.
Every value above is reproduced from this firm's Form ADV filing. Fields the firm left blank are shown as “Not reported” rather than filled in from other sources.