The Oak Tree Philanthropic Foundation

Private foundation · Grantmaker San Diego, CA EIN: 36-3779795
EducationHigher educationHealthIn-patient medical careHospital care

The Oak Tree Philanthropic Foundation is a private foundation based in San Diego, California. Its 2025 grants supported charitable organizations working in areas including humanitarian aid, education, news publication, and services for people with developmental disabilities.

The Oak Tree Philanthropic Foundation at a glance

In short: The Oak Tree Philanthropic Foundation gave $131K across 28 grants in 2025 (avg $5K), top state Illinois. 4% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.

Annual giving (2025)
$131,000
-22.5% vs 2024
Grants made (2025)
28
-3.4% vs 2024
Average grant
$4,679
-19.7% vs 2024
Median grant
$2,000
Total assets
$3,392,705
-5.3% vs 2024
New grantees (estimate)
4% first-time grantees (1 of 28, 2025)
Primary geography
Illinois (32% of itemized 2025 grant dollars)
Latest 990 filing
Form 990-PF, 2025 View filing

Data from IRS Form 990-PF, 2025; updated September 2026. New grantees are estimated by matching recipient names across years (methodology).

How to apply to The Oak Tree Philanthropic Foundation

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: 2314 Amity Street, San Diego, CA 92109
Phone: (858) 272-2819

Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.

Who The Oak Tree Philanthropic Foundation funds

How this funder distributes its grants

Top Recipients

Top 10 recipients in 2025

Lithuanian Catholic Press Society: $28KLithuanian Catholic PressSociety$28KHawken School Stemm Symposium: $25KHawken School Stemm Symposium$25KMedwish International: $12KMedwish International$12KThe Lesotho Connection: $10KThe Lesotho Connection$10KJesuit Fathers of Delta Strada Inc: $8KJesuit Fathers of Delta StradaInc$8KGrameen Foundation: $5KGrameen Foundation$5KLithuanian Catholic Religious Aid: $4KLithuanian Catholic ReligiousAid$4KThe Tanzanian Childrens Fund Inc: $4KThe Tanzanian Childrens FundInc$4KCatholic Relief Services: $3KCatholic Relief Services$3KInternational Relief Teams: $3KInternational Relief Teams$3K

The largest 2025 recipient was Lithuanian Catholic Press Society ($28K). Together the top 10 received $102K.

Grant Size Distribution

149 grants across all recorded years

149<$50K$50–100K$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 149 grants of 149 (100%).

Geographic Focus

Where this funder awards grants

In 2025, the largest shares of grant dollars went to recipients in Illinois (32%), Ohio (30%), and California (15%). Other listed recipient-state shares were Washington (8%) and Oregon (4%).

Grant Distribution by State

13states

Share of 2025 grant dollars across all 28 itemized grants.

Cities

San DiegoClevelandLemontEl CajonLa JollaChicagoAmericusBaltimoreBeverly HillsGates MillsMaspethPutnamSanta MonicaSonomaTacomaCambridgeWashingtonNapervilleThousand OaksCleveland Heights

Is The Oak Tree Philanthropic Foundation open to new grantees?

4%

first-time grantees, 2025

In 2025, 1 of 28 grantees (4%) were first-time recipients. First grants averaged $2K; repeat grants $5K. How we count

Medians: $2K first-time, $2K repeat.

  • 96% of 2025 grantees were also funded in 2024. Method
  • Giving fell 30% from 2022 to 2025. Method
  • In 2025 it paid out 94% 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 (2020–2025). 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

$0$100K$200K$300K32 grants2020 31 grants2021 31 grants2022 30 grants2023 29 grants2024 28 grants2025

From 2020 to 2025, annual grant giving ranged from $131K (2025) to $211K (2020). In 2025 it made 28 grants totaling $131K.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
Lithuanian Catholic Press Society Chicago, ILNews Publication$28,000
Hawken School Stemm Symposium Gates Mills, OHChildren's Education$25,000
Medwish International Cleveland, OHHumanitarian Aid$12,000
The Lesotho Connection Tacoma, WAHumanitarian Aid$10,000
Jesuit Fathers of Delta Strada Inc Lemont, ILHumanitarian Aid and Education$8,000
Grameen Foundation Beaverton, ORInternational Humanitarian Aid$5,000
Lithuanian Catholic Religious Aid Maspeth, NYHumanitarian Aid and Education$4,000
The Tanzanian Childrens Fund Inc Cambridge, MAHumanitarian Aid$4,000
Catholic Relief Services Baltimore, MDInternational Aid in Africa$3,000
International Relief Teams San Diego, CAHumanitarian Aid$3,000
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Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsQualifying DistributionsDistributable Amount
2025$3,392,705$138,891$327,829$131,00028$162,200$172,470
2024$3,581,643$65,228$341,488$169,00029$200,200$179,192
2023$3,857,903$144,987$355,883$180,00030$216,000$188,763
2022$4,068,799$48,039$362,474$188,00031$211,400$202,961
2021$4,383,234$103,338$349,191$204,50031$244,100$226,683
2020$4,629,087$72,016$364,466$210,50032—$241,099

Under IRS private-foundation payout rules, The Oak Tree Philanthropic Foundation reported a distributable amount of $172K 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 filing does not state a mission. Its 2025 grant purposes include humanitarian aid, education, news publication, international aid, and support for people with developmental disabilities.

Grantee descriptions illustrate the range of organizations it has supported. The Lithuanian Catholic Press Society describes its work as publishing newspapers with community news and cultural and educational programs. Lithuanian Catholic Religious Aid says it supports Catholic educational, religious, and social outreach projects in Lithuania and the diaspora. The Tanzanian Children’s Fund says it supports a permanent home for children in Tanzania and community programs for children and families. Other grantees describe work providing disaster and poverty relief, raising funds for services for people with developmental disabilities, building homes with low-income families, and providing person-centered services.

Grantmaking

In 2025, the foundation made 28 grants totaling $131,000. Grants ranged from $500 to $28,000, with a median of $2,000. Its largest grants included $28,000 to the Lithuanian Catholic Press Society for news publication, $25,000 to Hawken School STEM Symposium for children’s education, $12,000 to Medwish International for humanitarian aid, and $10,000 to The Lesotho Connection for humanitarian aid.

Other notable 2025 grants included $8,000 to Jesuit Fathers of Delta Strada Inc for humanitarian aid and education, $5,000 to Grameen Foundation for international humanitarian aid, and $3,000 each to Catholic Relief Services for international aid in Africa and International Relief Teams for humanitarian aid.

Leadership & Key People

Leadership team and compensation from IRS filings

The 2025 filing lists Danyte S Mockus as President & CEO, Ann L Failinger as Vice President, Andrius A Mockus as Secretary & Treasurer, and Joseph A Maciunas as Director.

The Oak Tree Philanthropic Foundation is led by Danyte S. Mockus, President & CEO since 2021 (on filings since 2020); all 4 officers listed in 2025 are compensated.

Officers on the 2025 filing

  • Danyte S. Mockus

    President & CEO

    Member → President & CEO, 2021

    On filings since 2020

    11 hrs/week

    $24K (2020) → $60K (2025)

  • Joseph A. Maciunas

    Director

    On filings since 2024

    1 hr/week

    $2K (2024) → $24K (2025)

  • Andrius A. Mockus

    Secretary & Treasurer

    Secretary & Treasurer → Secretary, 2021

    Secretary → Secretary & Treasurer, 2022

    On filings since 2020

    21 hrs/week

    $24K (2020) → $60K (2025)

  • Ann L. Failinger

    Vice President

    On filings since 2020

    3 hrs/week

    $24K (2020) → $24K (2025)

Former officers (1)
  • Former: Vytautas R. Mockus (2020–2022) — Former President & CEO

Data from IRS Form 990 filings, 2020–2025. "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

Danyte S Mockus — President & CEO: $60KDanyte S MockusPresident & CEO$60KAndrius a Mockus — Secretary & Treasurer: $60KAndrius a MockusSecretary & Treasurer$60KAnn L Failinger — Vice President: $24KAnn L FailingerVice President$24KJoseph a Maciunas — Director: $24KJoseph a MaciunasDirector$24K

The highest reported compensation on the 2025 filing was $60K, to Danyte S Mockus (President & CEO). 4 officers or directors reported compensation on that filing.

Frequently asked questions about The Oak Tree Philanthropic Foundation

How much does The Oak Tree Philanthropic Foundation give each year?

The Oak Tree Philanthropic Foundation gave $131K across 28 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $169K across 29 grants.

What is The Oak Tree Philanthropic Foundation's typical grant size?

The Oak Tree Philanthropic Foundation's median grant in 2025 was $2,000, and its average grant was $4,679, across 28 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from The Oak Tree Philanthropic Foundation that year got $2K on average.

Where does The Oak Tree Philanthropic Foundation give grants?

The Oak Tree Philanthropic Foundation's top state is Illinois, with 32% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were Ohio (30%) and California (15%). The most frequent recipient cities were San Diego, CA (4 grants), Cleveland, OH (3 grants), Lemont, IL (3 grants) and El Cajon, CA (2 grants).

Does The Oak Tree Philanthropic Foundation give general operating support?

Not in 2025: none of the 28 grants with a stated purpose on The Oak Tree Philanthropic Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Humanitarian Aid" (5 grants) and "Education" (3 grants).

Who are The Oak Tree Philanthropic Foundation's largest grantees?

The Oak Tree Philanthropic Foundation's largest 2025 grantees include Lithuanian Catholic Press Society ($28,000), Hawken School Stemm Symposium ($25,000) and Medwish International ($12,000), according to its 2025 IRS Form 990-PF. Together they received 50% of its itemized 2025 grant dollars.

How large is The Oak Tree Philanthropic Foundation?

The Oak Tree Philanthropic Foundation reported $3.4M in total assets on its 2025 IRS Form 990-PF. It paid out $162K in qualifying distributions that year, against a required minimum of $172K (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 The Oak Tree Philanthropic Foundation fund?

The foundation’s filing does not state a mission. Its 2025 grant purposes include humanitarian aid, education, news publication, international aid, and support for people with developmental disabilities. See mission & focus areas ↑

How do I apply for a grant from The Oak Tree Philanthropic Foundation?

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 The Oak Tree Philanthropic Foundation's EIN?

The Oak Tree Philanthropic Foundation's EIN (Employer Identification Number) is 36-3779795. IRS Form 990 filing data is available on this page for 2020–2025.

Does The Oak Tree Philanthropic Foundation accept unsolicited proposals?

No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑

Data last updated September 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.

Data update history

(7)

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2020 (received by the IRS November 11, 2021)
  2. Updated Form 990-PF for fiscal year 2021 (received by the IRS November 7, 2022)
  3. Updated Form 990-PF for fiscal year 2022 (received by the IRS November 13, 2023)
  4. Updated Form 990-PF for fiscal year 2023 (received by the IRS July 30, 2024)
  5. Updated Form 990-PF for fiscal year 2024 (received by the IRS May 15, 2025)
  6. Added Form 990-PF for fiscal year 2025 (received by the IRS May 13, 2026)
  7. IRS filings on file for fiscal years 2020–2024

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Cite this profile

Grantable. (2026). The Oak Tree Philanthropic Foundation funder profile. GrantGraph. Retrieved October 19, 2026, from https://grantable.co/funders/the-oak-tree-philanthropic-foundation-morg_2c0cc1d1bfd94f949855526b3c476cd8

BibTeX
@misc{grantable_363779795_2026,
  author       = {{Grantable}},
  title        = {{The Oak Tree Philanthropic Foundation funder profile}},
  howpublished = {GrantGraph},
  year         = {2026},
  url          = {https://grantable.co/funders/the-oak-tree-philanthropic-foundation-morg_2c0cc1d1bfd94f949855526b3c476cd8},
  note         = {Accessed 2026-10-19. 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 The Oak Tree Philanthropic Foundation'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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