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FOUR TREE ISLAND ADVISORY LLC
CRD 158851File 801-129929
APPROVED
Retail clients
Filing as of Mar 2, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$182.2M
Bottom 25% of cohort (national)
Discretionary AUM
$182.2M
Clients
54
136 accounts
Employees
2
Bottom 25% of cohort in NH
Identity & registration
ADV Item 1- Organization form
- Limited Liability Company
- Firm type
- Registered
- SEC region
- BRO
- Registration date
- Apr 18, 2024
- Principal office
- 126 DANIEL STREET, SUITE 120, PORTSMOUTH, NH, 03801
- Phone
- 603-427-8053
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $182.2M
- Discretionary AUM
- $182.2M
- Non-discretionary AUM
- $0
- Discretionary accounts
- 136
- Non-discretionary accounts
- 0
- Total accounts
- 136
- AUM per client
- $3.4M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Insurance companies | Fewer than 5 | $6.9M |
| High net worth individuals | 35 | $163.4M |
| Pooled investment vehicles | 1 | $1.9M |
| Individuals (other than high net worth individuals) | 18 | $10.0M |
Compensation & activities
ADV Items 5E, 5GCompensation
- A percentage of assets under your management
Advisory activities
- Portfolio management for businesses
- 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 11This firm answered no to every Item 11 disclosure question in this filing.
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Apr 1, 2026 | Clients | 57 | 54 | decreased by3 |
| Apr 1, 2026 | AUM | $163,075,608 | $182,195,722 | increased by$19,120,114 |
| Apr 1, 2026 | Accounts | 56 | 136 | increased by80 |
| May 1, 2025 | Registration | — | APPROVED |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “FOUR TREE” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“FOUR TREE” 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.