Peter and Ann Lambertus Family Foundatio
The Peter and Ann Lambertus Family Foundation is a private foundation based in Norwood, Massachusetts. In 2024, it made 66 grants totaling $13,908,000 to charitable organizations, including a hospital, a university foundation, conservation organizations, animal welfare groups, and arts organizations.
Peter and Ann Lambertus Family Foundatio at a glance
In short: Peter and Ann Lambertus Family Foundatio gave $13.9M across 66 grants in 2024 (avg $211K), mostly in Massachusetts. 12% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $13,908,000
- -5.1% vs 2023
- Grants made (2024)
- 66
- -14.3% vs 2023
- Average grant
- $210,727
- +10.7% vs 2023
- Median grant
- $15,000
- Total assets
- $297,921,784
- +12.2% vs 2023
- New grantees (estimate)
- 12% first-time grantees (8 of 66, 2024)
- Primary geography
- Massachusetts (50% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Peter and Ann Lambertus Family Foundatio
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: 1 Central Street 37, Norwood, MA 02061
Phone: (617) 904-9424
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Peter and Ann Lambertus Family Foundatio funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was Massachusetts General Hospital ($6.0M). Together the top 10 received $13.0M.
Organizations only. It also paid 1 grant to individuals ($5,000), which are not listed by name.
Grant Size Distribution
341 grants across all recorded years
The most common grant size was under $50K: 279 grants of 341 (82%).
Geographic Focus
Where this funder awards grants
In 2024, Massachusetts recipients received 50% of grant dollars and Indiana recipients received 43%. Virginia recipients received 4%, and recipients in the District of Columbia received 1%. California accounted for 0%.
Grant Distribution by State
Share of 2024 grant dollars across all 66 itemized grants.
States
Cities
Is Peter and Ann Lambertus Family Foundatio open to new grantees?
12%
first-time grantees, 2024
In 2024, 8 of 66 grantees (12%) were first-time recipients. First grants averaged $15K; repeat grants $238K. How we count
Medians: $14K first-time, $15K repeat.
- 86% of 2024 grantees were also funded in 2023. Method
- Giving held roughly steady from 2021 to 2024 (−13%). Method
- In 2024 it paid out 100% 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 (2020–2024). 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 2020 to 2024, annual grant giving ranged from $12.7M (2022) to $16.1M (2021). In 2024 it made 66 grants totaling $13.9M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Massachusetts General Hospital Boston, MA | General Support | $6,000,000 |
| Purdue Foundation W Lafayette, IN | General Support | $6,000,000 |
| Harwich Conservation Trust Harwich, MA | General Support | $500,000 |
| Lynchburg Humane Society Lynchburg, VA | General Support | $120,000 |
| Lexington Arts & Crafts Society Lexington, MA | General Support | $100,000 |
| St Francis House Bosotn, MA | General Support | $100,000 |
| Animal Resources of Tidewater Norfolk, VA | General Support | $50,000 |
| Dogs Deserve Better Smithfield, VA | General Support | $50,000 |
| Lexington Symphony Lexington, MA | General Support | $50,000 |
| The Trustees of Reservations Boston, MA | General Support | $50,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $297,921,784 | $46,562,396 | $14,200,742 | $13,908,000 | 66 | $13,911,212 | $16,122,866 | $13,939,671 |
| 2023 | $265,560,132 | $9,426,539 | $14,704,713 | $14,657,500 | 77 | $14,660,388 | $11,075,553 | $13,322,306 |
| 2022 | $270,838,306 | $3,266,739 | $12,711,660 | $12,706,000 | 63 | $12,708,830 | $3,263,909 | $13,731,619 |
| 2021 | $280,283,227 | $22,807 | $16,066,415 | $16,061,000 | 62 | $16,063,707 | $18,599 | $14,523,489 |
| 2020 | $296,326,835 | $16,049,823 | $14,665,112 | $14,657,000 | 73 | — | $1,045,767 | $14,264,227 |
Under IRS private-foundation payout rules, Peter and Ann Lambertus Family Foundatio reported a distributable amount of $13.9M for 2024 — 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 filing does not state a mission. Its 2024 grants show support for organizations working in several areas. For example, Harwich Conservation Trust says its mission is the preservation and conservation of open space in Harwich, Massachusetts. Lynchburg Humane Society describes its work as providing a compassionate, safe community for animals and people through life-saving programs, services, resources, and education. Lexington Symphony says it offers classical music programming and outreach for people of all ages.
Other 2024 grantees describe their work as supporting a no-kill community for pets (Animal Resources of Tidewater), helping chained, neglected, abused, or homeless animals (Dogs Deserve Better), and providing assistance to indigent people in central Arkansas (St. Francis House).
Grantmaking
In 2024, the foundation reported 66 grants totaling $13,908,000. Grant amounts ranged from $1,000 to $6,000,000, with a median of $15,000. The two largest grants were $6,000,000 each to Massachusetts General Hospital and Purdue Foundation, both for general support. Other notable grants included $500,000 to Harwich Conservation Trust, $120,000 to Lynchburg Humane Society, and $100,000 each to Lexington Arts & Crafts Society and St. Francis House.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Peter K. Lambertus as president, Edward J. Bartlett Jr. as treasurer and clerk, and Ann W. Lambertus as director.
Peter and Ann Lambertus Family Foundatio is led by Peter K. Lambertus, President on every filing since 2020; none of the 3 officers listed in 2024 report compensation.
Officers on the 2024 filing
Peter K. Lambertus
President
On filings since 2020
1 hr/week
No compensation reported
Ann W. Lambertus
Director
On filings since 2020
1 hr/week
No compensation reported
Edward J. Bartlett Jr.
Treasurer & Clerk
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about Peter and Ann Lambertus Family Foundatio
How much does Peter and Ann Lambertus Family Foundatio give each year?
Peter and Ann Lambertus Family Foundatio gave $13.9M across 66 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $14.7M across 77 grants.
What is Peter and Ann Lambertus Family Foundatio's typical grant size?
Peter and Ann Lambertus Family Foundatio's median grant in 2024 was $15,000, and its average grant was $210,727, across 66 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from Peter and Ann Lambertus Family Foundatio that year got $15K on average.
Where does Peter and Ann Lambertus Family Foundatio give grants?
Peter and Ann Lambertus Family Foundatio gives mostly in Massachusetts: 50% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The next largest state was Indiana (43%). The most frequent recipient cities were Lexington, MA (5 grants), Washington, DC (5 grants), Brewster, MA (5 grants) and Boston, MA (4 grants).
Does Peter and Ann Lambertus Family Foundatio give general operating support?
Yes: 100% of Peter and Ann Lambertus Family Foundatio's 2024 grants with a stated purpose (66 of 66) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are Peter and Ann Lambertus Family Foundatio's largest grantees?
Peter and Ann Lambertus Family Foundatio's largest 2024 grantees include Massachusetts General Hospital ($6,000,000), Purdue Foundation ($6,000,000) and Harwich Conservation Trust ($500,000), according to its 2024 IRS Form 990-PF. It also paid 1 grant to individuals ($5,000), which are not listed by name. Together they received 90% of its itemized 2024 grant dollars.
How large is Peter and Ann Lambertus Family Foundatio?
Peter and Ann Lambertus Family Foundatio reported $297.9M in total assets on its 2024 IRS Form 990-PF. It paid out $13.9M in qualifying distributions that year, against a required minimum of $13.9M (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 Peter and Ann Lambertus Family Foundatio fund?
The foundation’s filing does not state a mission. Its 2024 grants show support for organizations working in several areas. For example, Harwich Conservation Trust says its mission is the preservation and conservation of open space in Harwich, Massachusetts. See mission & focus areas ↑
How do I apply for a grant from Peter and Ann Lambertus Family Foundatio?
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Peter and Ann Lambertus Family Foundatio's EIN?
Peter and Ann Lambertus Family Foundatio's EIN (Employer Identification Number) is 82-3794617. IRS Form 990 filing data is available on this page for 2020–2024.
Does Peter and Ann Lambertus Family Foundatio 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 2020–2024
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Cite this profile
Grantable. (2026). Peter and Ann Lambertus Family Foundatio funder profile. GrantGraph. Retrieved October 22, 2026, from https://grantable.co/funders/peter-and-ann-lambertus-family-foundatio-morg_5effd108fed64d06be7377562729b0f5
BibTeX
@misc{grantable_823794617_2026,
author = {{Grantable}},
title = {{Peter and Ann Lambertus Family Foundatio funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/peter-and-ann-lambertus-family-foundatio-morg_5effd108fed64d06be7377562729b0f5},
note = {Accessed 2026-10-22. 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 Peter and Ann Lambertus Family Foundatio'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.
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