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FLAGSHIP HARBOR ADVISORS, LLC
CRD 155733File 801-71997
APPROVED
Retail clients
Disclosure events
Filing as of May 21, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$3.42B
Top 25% of cohort (national)
Discretionary AUM
$3.42B
Clients
7,373
12,815 accounts
Employees
61
Above cohort median in MA
Identity & registration
ADV Item 1- Organization form
- Limited Liability Company
- Firm type
- Registered
- SEC region
- BRO
- Registration date
- Dec 8, 2010
- Principal office
- 346 COMMERCIAL STREET, BOSTON, MA, 02109
- Phone
- (857) 350-4229
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $3.42B
- Discretionary AUM
- $3.42B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 12,815
- Non-discretionary accounts
- 0
- Total accounts
- 12,815
- AUM per client
- $464K
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Other | 37 | $12.1M |
| Charitable organizations | 27 | $12.7M |
| High net worth individuals | 2,556 | $2.52B |
| Pension and profit sharing plans | 29 | $16.2M |
| Individuals (other than high net worth individuals) | 4,724 | $854.7M |
Compensation & activities
ADV Items 5E, 5GCompensation
- Fixed fees
- Hourly charges
- A percentage of assets under your management
Advisory activities
- Other
- Financial planning services
- Selection of other advisers
- Portfolio management for individuals and/or small businesses
Custody
ADV Item 9- Firm Custody Cash
- No
- 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 11- Q11D2
- Q11D4
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Feb 1, 2026 | Employees | 60 | 61 | increased by1 |
| Feb 1, 2026 | Clients | 7,687 | 7,373 | decreased by314 |
| Feb 1, 2026 | AUM | $3,008,478,711 | $3,419,401,101 | increased by$410,922,390 |
| Feb 1, 2026 | Accounts | 13,382 | 12,815 | decreased by567 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 54 | 60 | increased by6 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 6,297 | 7,687 | increased by1,390 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $2,126,201,853 | $3,008,478,711 | increased by$882,276,858 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 10,747 | 13,382 | increased by2,635 |
| Jun 1, 2022 | Employees | 53 | 54 | increased by1 |
| Mar 1, 2022 | Employees | 55 | 53 | decreased by2 |
| Mar 1, 2022 | Clients | 4,470 | 6,297 | increased by1,827 |
| Mar 1, 2022 | AUM | $1,991,436,525 | $2,126,201,853 | increased by$134,765,328 |
| Mar 1, 2022 | Accounts | 10,722 | 10,747 | increased by25 |
| 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 “FLAGSHIP HARBOR” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“FLAGSHIP HARBOR” 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.