Horizon Foundation Inc
Horizon Foundation Inc is a private foundation based in Rockport, Massachusetts. Founded in 1997, it funds nonprofit organizations in communities where its trustees live and work, with an emphasis on building organizational and community-wide effectiveness and supporting sustainable, vibrant, resilient communities.
Horizon Foundation Inc at a glance
In short: Horizon Foundation Inc gave $1.3M across 110 grants in 2025 (avg $12K), top state Maine. 29% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $1,335,013
- +12.7% vs 2024
- Grants made (2025)
- 110
- +20.9% vs 2024
- Average grant
- $12,136
- -6.8% vs 2024
- Median grant
- $10,000
- Total assets
- $32,023,639
- +6.6% vs 2024
- New grantees (estimate)
- 29% first-time grantees (32 of 110, 2025)
- Primary geography
- Maine (39% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Horizon Foundation Inc
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation does not accept unsolicited requests and uses an invite-only application process. It says organizations funded in fall 2024 or earlier will be considered for the fall 2026 cycle. Invited organizations are to be contacted in early October and submit applications through the online system. Past grantees must wait at least two years before reapplying. The foundation does not consider requests for annual, building, capital or endowment fund drives; colleges and universities; emergency requests; health or mental health programs; individuals; international or foreign programs; public or private schools; religious projects; or state agencies. Final reports are generally due one year after a grant, with interim updates possible.
- Review Cycle
- November 10, 2026, for invited organizations applying in the fall 2026 cycle. The foundation says it will notify organizations of awards in early December.
- Deadline
- November 10, 2026, for invited organizations applying in the fall 2026 cycle.
- Contact
Application contact: Horizon Foundation
Mailing address: PO Box 816, Rockport, MA 01966
Phone: (207) 773-5101
Email: info@horizonfoundation.org
Website: https://horizonfoundation.org
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Open Grants
1 open opportunity from Horizon Foundation Inc
Who Horizon Foundation Inc funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was 3S Artspace ($20K). Together the top 10 received $200K.
Organizations only. It also paid 1 grant to individuals ($20,000), which are not listed by name.
Grant Size Distribution
487 grants across all recorded years
The most common grant size was under $50K: 487 grants of 487 (100%).
Geographic Focus
Where this funder awards grants
The foundation says organizations must be based in or primarily serve one or more of these communities:
- Fairfield County, Connecticut
- Martin and Palm Beach Counties, Florida
- Blaine County, Idaho
- Cumberland, Lincoln, Franklin and York Counties, Maine
- Barnstable County, Massachusetts
- Gallatin County, Montana
- Rockingham County, New Hampshire
- Mercer County, New Jersey
Grant Distribution by State
Share of 2025 grant dollars across all 110 itemized grants.
States
Cities
Is Horizon Foundation Inc open to new grantees?
29%
first-time grantees, 2025
In 2025, 32 of 110 grantees (29%) were first-time recipients. First grants averaged $11K; repeat grants $13K. How we count
Medians: $10K first-time, $11K repeat.
- 4% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (+3%). Method
- In 2025 it paid out 98% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2021–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2021 to 2025, annual grant giving ranged from $1.1M (2021) to $1.3M (2025). In 2025 it made 110 grants totaling $1.3M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| 3S Artspace Portsmouth, NH | General Support | $20,000 |
| Banner Lake Club Inc Hobe Sound, FL | General Support | $20,000 |
| Boys & Girls Club of Martin County Inc Hobe Sound, FL | General Support | $20,000 |
| Carver Foundation of Norwalk CT Norwalk, CT | General Support | $20,000 |
| Higher Ground Ketchum, ID | General Support | $20,000 |
| House of Hope Stuart, FL | General Support | $20,000 |
| Kieve Wavus Education Nobleboro, ME | General Support | $20,000 |
| 1 grant to individuals Recipients not named | — | $20,000 |
| Osterville Village Library Osterville, MA | General Support | $20,000 |
| Portland Community Squash Portland, ME | General Support | $20,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $32,023,639 | $2,974,708 | $1,615,853 | $1,335,013 | 110 | $1,469,891 | $2,865,043 | $1,504,405 |
| 2024 | $30,030,083 | $3,492,075 | $1,467,435 | $1,184,554 | 91 | $1,320,517 | $3,392,204 | $1,321,760 |
| 2023 | $26,791,548 | $1,265,706 | $1,486,427 | $1,215,000 | 99 | $1,375,128 | $1,174,230 | $1,248,251 |
| 2022 | $24,987,883 | $2,103,553 | $1,551,175 | $1,290,152 | 106 | $1,426,459 | $1,997,656 | $1,403,523 |
| 2021 | $29,351,529 | $2,417,496 | $1,358,290 | $1,135,000 | 81 | — | $2,323,043 | $1,278,148 |
Under IRS private-foundation payout rules, Horizon Foundation Inc reported a distributable amount of $1.5M for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
The foundation’s website describes its mission as supporting nonprofit organizations that aspire to create and maintain sustainable, vibrant and resilient communities. Its stated priorities include enabling children and adults to lead in creative, healthy and thoughtful ways; educating citizens to be environmental stewards; conserving land and water; encouraging service; promoting visual arts and music; and teaching appreciation of and preserving historic assets.
In Maine, it also supports organizations serving children, providing arts, enrichment, educational and leadership development opportunities, and addressing food security and assistance for vulnerable people. Its environmental funding in Maine largely supports work implementing strategies in Maine Won’t Wait, the state’s climate action plan. Outside Maine, its website highlights learning in and beyond the classroom, self-esteem, educational proficiency and competency, and safe places for children to learn and develop leadership.
Its 2025 grantees illustrate a range of work. For example, Boys & Girls Club of Martin County describes its mission as helping young people reach their potential and become productive, caring and responsible citizens. ProsperityME says it empowers refugee and immigrant communities through education and counseling to build financial stability, careers, businesses and wealth. Rangeley Lakes Heritage Trust describes its work as conserving and stewarding the natural and historical resources of its region.
Grantmaking
In filing year 2025, the foundation gave $1,335,013 through 110 grants. Grants ranged from $5,000 to $20,000, with a median of $10,000. The foundation’s website says grants are generally $5,000 to $20,000, with an average of about $12,500; it will consider challenge or matching grants and encourages collaboration with other grantmakers.
Among its 2025 awards were $20,000 each to Boys & Girls Club of Martin County, ProsperityME, Rangeley Lakes Heritage Trust, Portland Community Squash and Kieve Wavus Education; $15,000 to Conservation Law Foundation; and $20,000 to The Nature Conservancy and The Everglades Foundation.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Margaret B. Chadbourne as Assistant Treasurer and Executive Director. It lists Nancy B. Buck and Sarah M. Buck as Co-Presidents and Directors. Directors listed include Alexander K. Buck Jr., Alexander K. Buck III, Anne E. Buck, Norman Harrison Buck and John A. Ogden. Allie W. Buck and Mallory N. Buck are also listed as directors, with their terms ending in November 2024 and May 2025, respectively.
Horizon Foundation Inc is led by Margaret B Chadbourne, Assistant Treasurer & Executive Director on every filing since 2023; 1 of 12 officers listed in 2025 is compensated.
Officers on the 2025 filing
Margaret B Chadbourne
Assistant Treasurer & Executive Director
On filings since 2023
40 hrs/week
$81K (2023) → $93K (2025)
Nancy B Buck
Co-President & Director
Trustee → Co-President & Director, 2023
On filings since 2021
5 hrs/week
No compensation reported
Sarah M Buck
Co-President & Director
On filings since 2023
5 hrs/week
No compensation reported
Alexander K Buck III
Director
Trustee → Director, 2023
On filings since 2021
1 hr/week
No compensation reported
Alexander K Buck Jr.
Director
President → Director, 2023
On filings since 2021
1 hr/week
No compensation reported
Allie W Buck
Director
Trustee → Director, 2023
On filings since 2021
1 hr/week
No compensation reported
Anne E Buck
Director
Secretary → Director, 2023
On filings since 2021
1 hr/week
No compensation reported
Mallory N Buck
Director
Trustee → Director, 2023
On filings since 2021
1 hr/week
No compensation reported
Norman Harrison Buck
Director
Chairman → Director, 2023
On filings since 2021
1 hr/week
No compensation reported
John A Ogden
Director
Treasurer & Director → Director, 2025
On filings since 2023
1 hr/week
No compensation reported
Callie Buck
Treasurer & Director
Treasurer → Treasurer & Director, 2025
On filings since 2024
1 hr/week
No compensation reported
Johnny P Ritzo
Vice President & Secretary
On filings since 2023
1 hr/week
No compensation reported
Former officers (3)
- Former: Caroline Buck Ogden (2021–2023) — Director
- Former: Henry R Buck (2021) — Trustee
- Former: John P Ritzo (2021) — Trustee
Data from IRS Form 990 filings, 2021–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $93K, to Margaret B Chadbourne (Asst Treasurer/Exec Dir.).
Frequently asked questions about Horizon Foundation Inc
How much does Horizon Foundation Inc give each year?
Horizon Foundation Inc gave $1.3M across 110 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $1.2M across 91 grants.
What is Horizon Foundation Inc's typical grant size?
Horizon Foundation Inc's median grant in 2025 was $10,000, and its average grant was $12,136, across 110 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Horizon Foundation Inc that year got $11K on average.
Where does Horizon Foundation Inc give grants?
Horizon Foundation Inc's top state is Maine, with 39% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were Massachusetts (15%) and Florida (12%). The most frequent recipient cities were Portland, ME (18 grants), Bozeman, MT (9 grants), Hyannis, MA (3 grants) and Concord, NH (3 grants).
Does Horizon Foundation Inc give general operating support?
Yes: 97% of Horizon Foundation Inc's 2025 grants with a stated purpose (107 of 110) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Horizon Foundation Inc's largest grantees?
Horizon Foundation Inc's largest 2025 grantees include 3S Artspace ($20,000), Banner Lake Club Inc ($20,000) and Boys & Girls Club of Martin County Inc ($20,000), according to its 2025 IRS Form 990-PF. It also paid 1 grant to individuals ($20,000), which are not listed by name. Together they received 4% of its itemized 2025 grant dollars.
How large is Horizon Foundation Inc?
Horizon Foundation Inc reported $32.0M in total assets on its 2025 IRS Form 990-PF. It paid out $1.5M in qualifying distributions that year, against a required minimum of $1.5M (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
What does Horizon Foundation Inc fund?
The foundation’s website describes its mission as supporting nonprofit organizations that aspire to create and maintain sustainable, vibrant and resilient communities. See mission & focus areas ↑
How do I apply for a grant from Horizon Foundation Inc?
The foundation does not accept unsolicited requests and uses an invite-only application process. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Horizon Foundation Inc's EIN?
Horizon Foundation Inc's EIN (Employer Identification Number) is 23-2867116. IRS Form 990 filing data is available on this page for 2021–2025.
Does Horizon Foundation Inc accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2021–2025
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Cite this profile
Grantable. (2026). Horizon Foundation Inc funder profile. GrantGraph. Retrieved October 13, 2026, from https://grantable.co/funders/horizon-foundation-inc-morg_b713eedc20954933bb58b4edec7dfc87
BibTeX
@misc{grantable_232867116_2026,
author = {{Grantable}},
title = {{Horizon Foundation Inc funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/horizon-foundation-inc-morg_b713eedc20954933bb58b4edec7dfc87},
note = {Accessed 2026-10-13. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from Horizon Foundation Inc's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
Horizon Foundation Inc down — hundreds of funders to go?