Protostar Foundation

Private foundation · Grantmaker San Diego, CA EIN: 81-1864222

Protostar Foundation is a private foundation, based in San Diego, CA. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $186K in total assets. In 2024, it awarded 7 grants totaling $79K. Net investment income was $20.

Protostar Foundation at a glance

In short: Protostar Foundation gave $79K across 7 grants in 2024 (avg $11K), mostly in California. Source: 2024 IRS Form 990-PF.

Annual giving (2024)
$79,000
+62.9% vs 2023
Grants made (2024)
7
+40.0% vs 2023
Average grant
$11,286
+16.3% vs 2023
Median grant
$5,000
Total assets
$186,322
+301.9% vs 2023
Primary geography
California (51% of itemized 2024 grant dollars)
Latest 990 filing
Form 990-PF, 2024 View filing

Data from IRS Form 990-PF, 2024; updated September 2026.

Who Protostar Foundation funds

How this funder distributes its grants

Top Recipients

Top 7 recipients in 2024

La Jolla Music Society: $30KLa Jolla Music Society$30KNew York Junior Tennis & Learning: $28KNew York Junior Tennis &Learning$28KNorth Coast Repertory Threatre: $10KNorth Coast Repertory Threatre$10KSilkroad's Global Music Workshop: $5KSilkroad's Global MusicWorkshop$5KJunior Tennis Foundation: $3KJunior Tennis Foundation$3KAmerican Foundation for Suicide Prevention: $3KAmerican Foundation forSuicide Prevention$3KCenter for Healing and Justice Through Sport: $1KCenter for Healing and JusticeThrough Sport$1K

The largest 2024 recipient was La Jolla Music Society ($30K). Together the top 7 received $79K.

Grant Size Distribution

27 grants across all recorded years

27<$50K$50–100K$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 27 grants of 27 (100%).

Geographic Focus

Where this funder awards grants

Grant Distribution by State

4states

Share of 2024 grant dollars across all 7 itemized grants.

Cities

New YorkSan DiegoBrooklynLa JollaWest HarrisonLong Island CitySolana BeachBrightonChicagoLa MesaLos Angeles

How Protostar Foundation gives

  • Giving grew 159% from 2021 to 2024. Method
  • In 2024 it paid out well above its IRS minimum distribution (the 5% rule). Method

From the foundation's IRS Form 990 filings. Methodology.

Giving History

Giving Over Time

Total grant dollars and number of grants per year

$0$20K$40K$60K$80K1 grant2020 6 grants2021 8 grants2022 5 grants2023 7 grants2024

From 2020 to 2024, annual grant giving ranged from $10K (2020) to $79K (2024). In 2024 it made 7 grants totaling $79K.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
La Jolla Music Society La Jolla, CACharitable Purposes$30,000
New York Junior Tennis & Learning Long Island City, NYCharitable Purposes$27,500
North Coast Repertory Threatre Solana Beach, CACharitable Purposes$10,000
Silkroad's Global Music Workshop Brighton, MACharitable Purposes$5,000
Junior Tennis Foundation West Harrison, NYCharitable Purposes$3,000
American Foundation for Suicide Prevention New York, NYCharitable Purposes$2,500
Center for Healing and Justice Through Sport Chicago, ILCharitable Purposes$1,000
Your AI grants department

Ready to take the next step with Protostar Foundation?

Fully replaces Grant database subscriptions Instrumentl · Foundation Directory · GrantStation & similar

Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsQualifying DistributionsNet Investment IncomeDistributable Amount
2024$186,322$269,235$129,309$79,0007$129,309$20$3,448
2023$46,356$13,423$85,192$48,5005$85,192—$3,779
2022$118,069$142,122$63,137$27,0008$63,137—$2,840
2021$41,794$49,055$72,199$30,5006$72,199—$2,779
2020$62,145$2,675$30,000$10,0001———

Under IRS private-foundation payout rules, Protostar Foundation reported a distributable amount of $3K for 2024 — the minimum it must pay out in qualifying distributions.

Leadership & Key People

Officers and directors from IRS filings

Protostar Foundation is led by Gary P. Poon, President & Chairman on every filing since 2020; none of the 2 officers listed in 2024 report compensation.

Officers on the 2024 filing

  • Gary P. Poon

    President & Chairman

    On filings since 2020

    40 hrs/week

    No compensation reported

  • Richard Hartley

    Treasurer & Director

    On filings since 2023

    1 hr/week

    No compensation reported

Former officers (1)
  • Former: Peter Leighton (2020–2022) — Treasurer & Director

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 Protostar Foundation

How much does Protostar Foundation give each year?

Protostar Foundation gave $79K across 7 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $49K across 5 grants.

What is Protostar Foundation's typical grant size?

Protostar Foundation's median grant in 2024 was $5,000, and its average grant was $11,286, across 7 grants on its 2024 IRS Form 990-PF.

Where does Protostar Foundation give grants?

Protostar Foundation gives mostly in California: 51% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The next largest states were New York (42%) and Massachusetts (6%).

Who are Protostar Foundation's largest grantees?

Protostar Foundation's largest 2024 grantees include La Jolla Music Society ($30,000), New York Junior Tennis & Learning ($27,500) and North Coast Repertory Threatre ($10,000), according to its 2024 IRS Form 990-PF. Together they received 85% of its itemized 2024 grant dollars.

How large is Protostar Foundation?

Protostar Foundation reported $186K in total assets on its 2024 IRS Form 990-PF. It paid out $129K in qualifying distributions that year, against a required minimum of $3K (roughly 5% of its investment assets).

What is Protostar Foundation's EIN?

Protostar Foundation's EIN (Employer Identification Number) is 81-1864222. IRS Form 990 filing data is available on this page for 2020–2024.

Data last updated September 2026. Sourced from IRS Form 990 filings.

Data update history

(2)

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990 for fiscal year 2020 (received by the IRS May 10, 2021)
  2. IRS filings on file for fiscal years 2020–2024

Explore Open Grants

Browse active grant opportunities in Protostar Foundation's focus areas in our free grants database

Similar Funders

Funders that support many of the same organizations

Usta Eastern Inc

Purchase, NY

Growing tennis to inspire healthier people and communities everywhere.

Assets

$8.4M

Grants

7

Total Given

$956K

The Parker Foundation

Carlsbad, CA

The Parker Foundation funds charitable organizations serving San Diego County across social services, arts, community, and education. In 2025, grants ranged from $2,500 to $300,000, with a median of $30,000. It accepts proposals; the next listed deadline is October 2, 2026.

Assets

$50.4M

Grants

65

Total Given

$2.6M

The Gess Foundation

Wellesley, MA

The Gess Foundation supports organizations in areas including music, arts and culture, watershed protection, Jewish community life, and cinema, with most 2024 funding going to Massachusetts, California, and Maine. Its 26 grants ranged from $30 to $60,500, with a median award of $2,500. It funds only preselected organizations and does not accept unsolicited requests.

Assets

$3.0M

Grants

26

Total Given

$183K

The Pearl Family Foundation Inc

Wilmington, DE

The Pearl Family Foundation supports education, arts, community, and human-services organizations, with most 2024 funding going to Pennsylvania and New York. Its grants ranged from $250 to $30,000, with a median of $1,000; it funds only preselected organizations and does not accept unsolicited requests.

Philanthropy, Voluntarism & Grantmaking

Assets

$549K

Grants

49

Total Given

$108K

Joseph S & Diane H Steinberg 1992

Brooklyn, NY

The foundation supports a range of charitable organizations, including arts and cultural institutions, education, cancer research, and parks, with most funding going to New York recipients. In 2025, it made 51 grants totaling about $3.45 million; grants ranged from $100 to $680,784, with a median of $25,000. It funds only preselected organizations and does not accept unsolicited requests.

Assets

$48.7M

Grants

51

Total Given

$3.4M

Usta Foundation Incorporated

Purchase, NY

The USTA Foundation supports youth programs that combine tennis with education and mentorship, especially those serving under-resourced communities, and also funds court improvements and college scholarships. Its 2025 grants ranged from $6,000 to $1 million, with a median grant of $40,000, and it supports organizations across the United States. The profile does not state whether it accepts unsolicited grant requests.

Recreation & Sports

Assets

$26.7M

Grants

149

Total Given

$9.3M

More similar funders

More Funders in California

The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open

Figures come from Protostar 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.

Protostar Foundation down — hundreds of funders to go?

Want AI to do this for you?