Third Harbor

RIASEC RegisteredEst. 2026
Total AUM
—
Avg account
$0
Accounts
0
Employees
3
Advisory reps
3

Firm details

Headquarters
Cold Spring Harbor, New York
CRD number
343219
Registered since
July 22, 2026
Fee structure
Percentage of AUM, Performance Based Fees
Services
Portfolio Management for Pooled Investment Vehicles

Firm profile

FINTRX

Overview

Third Harbor is organized as a limited partnership and is registered with the SEC in 2026 as an institutional registered investment adviser. The firm’s owner type is listed as an individual and it identifies as a newly formed adviser. Its advisory activity is focused on portfolio management for pooled investment vehicles, and its stated fee arrangements include both a percentage-of-AUM component and performance-based fees. Third Harbor is not designated as a capital allocator and does not report active ESG investing activity. The firm is registered to operate within a single state rather than as a multi-state adviser. That profile and the pooled-vehicle focus suggest a fund-like operating model rather than a traditional multi-client RIA serving retail households.

Assets & Accounts

Investments & Alternatives

Investment profile

FINTRX

Traditional investments used

Alternative investments used

Active ESG investor

Technology & operations

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CRM & tech providers

TAMPs used

Clients

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Client base

Client personas

Owners & executives

1 of 1
  • Thomas Walker

    Thomas Walker

    Managing Director, Chief Financial OfficerCRD 5313996

Contacts

2 of 2
  • Dustin Smith

    Managing PartnerCRD 6865766

  • Mark Paolano

    CRD 6073278

Wealth teams

FINTRX

Newly hired reps

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Recent M&A activity

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Recent filings

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Awards

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Location

Primary office

Cold Spring Harbor, NY

Suffolk

Location

Cold Spring Harbor, NY

Headquartered in Cold Spring Harbor, NY, anchoring the New York-Newark, NY-NJ-CT-PA metro in the Northeast.

Metro area
New York-Newark, NY-NJ-CT-PA
Region
Northeast
County
Suffolk
Address
3 Harbor Rd
Time zone
ET (UTC-5)
Office locations

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Source: FINTRX private wealth data intelligence

Intelligence for Private Wealth