Harbor Advisory provides financial planning, portfolio management for individuals and small businesses, portfolio management for institutions, selecting other managers, publishing newsletters, educational seminars, education planning, estate planning, insurance, and tax planning. Financial planning was provided to 101–250 clients last fiscal year.
Harbor Advisory reports 144 clients. They include 99 high-net-worth individuals and 45 individual clients. Of its assets, 100.0% ($481M across 395 accounts) are managed with discretion.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 31% | 4% |
| High-net-worth individuals | 69% | 95% |
| Pension and profit-sharing plans | Fewer than 5 | <1% |
Client shares use reported counts. Client types without a reported count are excluded from that total.
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 45 | $19.8M | 4.1% | $440K |
| High-net-worth individuals | 99 | $457M | 94.9% | $4.61M |
| Pension and profit-sharing plans | Fewer than 5 | $4.62M | 1.0% | — |
| Total | 144 | $481M | 100% | — |
- Clients
- 45
- Regulatory AUM
- $19.8M
- AUM share
- 4.1%
- Avg. per client
- $440K
- Clients
- 99
- Regulatory AUM
- $457M
- AUM share
- 94.9%
- Avg. per client
- $4.61M
- Clients
- Fewer than 5
- Regulatory AUM
- $4.62M
- AUM share
- 1.0%
- Avg. per client
- —
Total
- Clients
- 144
- Regulatory AUM
- $481M
- AUM share
- 100%
- Avg. per client
- —
- Clients outside the U.S.
- 0%
- Clients advised without assets under management last fiscal year
- 0
- Private funds advised
- 0
- Financial planning clients last fiscal year
- 101–250
Harbor Advisory charges 0.50%–1.10% a year for its Investment Management Fee Schedule. The fee is billed in advance, is negotiable and has a $20,000 annual minimum. The brochure also prices one other service, listed under fee details.
Fee details and sources
Other fees
- Consulting services
- Consulting services other than investment management may be charged hourly or as a fixed fee; the brochure states no rate.
John Degan owns 25% to 50% of Harbor Advisory. The leadership team of Harbor Advisory includes President Weld Butler, Chief Investment Officer John Degan and Chief Compliance Officer Andrew Warning. It has 3 employees.
Leadership
- Weld ButlerPresident, Director
- John DeganDirector & Vice President, Chief Investment Officer
- Daniel ZibinskasSenior Portfolio Manager, Director, Vice President, Treasurer, Clerk
- Andrew WarningChief Compliance Officer
Investment adviser representatives
3 representatives listed in the SEC register as of 9 October 2026.
Staff
- 3 employees
- 3 in advisory functions
- 3 state-registered reps
- Owns 25% to 50% of Harbor Advisory Corporation
John Degan
Control person · since June 1996
- Owns 25% to 50% of Harbor Advisory Corporation
Daniel Zibinskas
Control person · since November 2020
- Owns 25% to 50% of Harbor Advisory Corporation
The Weld R. Butler Revocable Trust
since January 2017
- Owns 25% to 50% of The Weld R. Butler Revocable Trust
Weld Butler
Control person · since January 2017
Harbor Advisory’s regulatory assets grew 1.8× from $264M (March 2021) to $481M (May 2026); clients rose from 129 to 144 and employees were 3 in both filings.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| May 2026 | $481M | 144 | 3 | 1 |
| June 2025 | $444M | 154 | 3 | 1 |
| May 2024 | $403M | 148 | 3 | 1 |
| March 2023 | $360M | 144 | 3 | 1 |
| June 2022 | $392M | 137 | 3 | 1 |
| March 2021 | $264M | 129 | 3 | 1 |
Besides its headquarters, Harbor Advisory has 0 offices, with 1 listed address in New Hampshire.
New Hampshire · 1 listed address
- 500 Market St., Suite 1a, PortsmouthHQ
Other business names
Harbor Advisory has reported 1 other business name to the SEC.
- Harbor Advisory
Contact and registration details
- Legal name
- Harbor Advisory Corporation
- Headquarters
- 500 Market St., Suite 1a, Portsmouth, NH 03801
- Website
- harboradvisory.com
- Phone
- 603-431-5740
- SEC file
- 801-8915
- Founded
- 1972
- Structure
- Massachusetts corporation
- Fiscal year end
- December
Harbor Advisory uses Charles Schwab ($270M, 56%) and Pershing ($208M, 44%) as custodians for its separately managed accounts. Harbor Advisory has custody of $34.7M in client assets for 15 clients.
- PershingPershing Advisor Solutions LLC · Jersey City, NJ · $208M44%
- Charles SchwabCharles Schwab & Co., Inc. · Orlando, FL · $270M56%
At year end, Harbor Advisory’s separately managed accounts were mostly in funds (58%) and stocks (28%). Its reported 13F holdings for the quarter ended 30 June 2026 total $374M across 82 positions; the largest are Vanguard Index Fds (5.5%), iShares TR (4.7%) and Alphabet Inc. (4.6%).
What the accounts hold
- Stocks28%
- Funds58%
- Registered funds52%
- Pooled vehicles6%
- Bonds3%
- Cash11%
Reported 13F holdings
- $374M
- Reported 13F value
- 82
- Positions
- 42.5%
- In the 10 largest
- +12.3%
- Value vs. prior quarter
- Vanguard Index Fds · S&P 500 ETF Shs5.5%
- iShares TR · Core S&P Mcp ETF4.7%
- Alphabet Inc. · Cap Stk CL A4.6%
- Vanguard Intl Equity Index F · FTSE Europe ETF4.2%
- iShares TR · Core S&P Scp ETF4.1%
- Vanguard Intl Equity Index F · FTSE Emr Mkt ETF4.0%
- First TR Exchange-traded FD · Senior LN FD3.9%
- Amazon Com Inc.3.9%
- J P Morgan Exchange Traded F · Income ETF3.8%
- Berkshire Hathaway Inc. Del · CL B New3.8%
Together, the ten largest are 42.5% of reported value.
How many clients does Harbor Advisory have?
Harbor Advisory has 144 clients and manages $481 million for them, as of May 2026. They include 99 high-net-worth individuals and 45 individual clients.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 14 May 2026
What services does Harbor Advisory offer?
Harbor Advisory provides financial planning, portfolio management for individuals and small businesses, portfolio management for institutions, selecting other managers, publishing newsletters, educational seminars, education planning, estate planning, insurance, and tax planning.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file; Part 2A brochure, Item 4
How much does Harbor Advisory charge?
Harbor Advisory charges 0.50%–1.10% a year for its Investment Management Fee Schedule. The fee is billed in advance, is negotiable and has a $20,000 annual minimum.
Source: HARBOR ADVISORY ADV PART 2A BROCHURE 5 2026, filed 14 May 2026
Which custodians does Harbor Advisory use?
Harbor Advisory’s separately managed account assets are held at Charles Schwab & Co., Inc. (Orlando, FL), with $270M and Pershing Advisor Solutions LLC (Jersey City, NJ), with $208M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 14 May 2026
How many financial advisors does Harbor Advisory have?
Harbor Advisory has 3 investment adviser representatives registered with state securities authorities, out of 3 employees, and 3 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
What does Harbor Advisory invest in?
At the end of its last fiscal year, Harbor Advisory’s separately managed accounts held 52% registered funds (mutual funds, ETFs, BDCs), 28% exchange-traded equities, 11% cash and equivalents, 6% pooled vehicles (private funds and similar) and 3% U.S. government and agency bonds.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Harbor Advisory?
Harbor Advisory is owned through a trust by Weld Butler. Its direct owners are John Degan, Daniel Zibinskas and the Weld R. Butler Revocable Trust, each holding 50% or less.
Source: Form ADV Part 1A, Schedules A and B, filed 14 May 2026
How does Harbor Advisory get paid?
Harbor Advisory is paid through a percentage of assets under management, hourly charges and fixed fees. Its Form ADV lists no commissions or performance-based fees among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file
Is Harbor Advisory registered with the SEC?
Yes, Harbor Advisory has been registered with the SEC as an investment adviser since 22 October 1972. Its CRD number is 105151 and its SEC file number is 801-8915.
Source: Form ADV Part 1A, Item 1, filed 14 May 2026; IAPD firm record
How do I contact Harbor Advisory?
Harbor Advisory’s main office is at 500 Market St., Suite 1a, Portsmouth, NH 03801. Its phone number is 603-431-5740. Its website is harboradvisory.com.