Mark & Jannie Wu Family Fdn

Private foundation · Grantmaker Pennington, NJ EIN: 77-0555799

Mark & Jannie Wu Family Fdn is a private foundation, based in Pennington, NJ. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $947K in total assets. In 2025, it awarded 4 grants totaling $46K. Net investment income was $124K.

Key facts about Mark & Jannie Wu Family Fdn

In short: Mark & Jannie Wu Family Fdn gave $46K across 4 grants in 2025 (avg $12K), mostly in California. Source: 2025 IRS Form 990-PF.

EIN
77-0555799
Latest 990 filing
Form 990-PF, 2025
Annual giving (2025)
$46,250
Grants made (2025)
4
Average grant
$11,563
Median grant
$8,625
Total assets
$947,252
Primary geography
California (89% of itemized 2025 grant dollars)

Data from IRS Form 990-PF, 2025; updated September 2026.

Financial Overview

From 2025 IRS Form 990-PF · View filing

Total Assets

$947K

+7.5% YoY

Annual Giving

$46K

+12.8% YoY

Grant Count

4

+33.3% YoY

Avg Grant Size

$12K

-15.4% YoY

Under IRS private-foundation payout rules, Mark & Jannie Wu Family Fdn reported a distributable amount of $57K for 2025 — the minimum it must pay out in qualifying distributions.

How Mark & Jannie Wu Family Fdn gives

  • Giving held roughly steady from 2022 to 2025 (−17%). 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

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

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Geographic Focus

Where this funder awards grants

Grant Distribution by State

3states

Share of 2025 grant dollars across all 4 itemized grants.

Cities

DavisE Palo AltoSanta ClaraSan JoseSalinasSaratogaEast Palo AltoKirklandWatertown

Giving Over Time

Total grant dollars and number of grants per year

$0$20K$40K$60K4 grants2020 4 grants2021 5 grants2022 4 grants2023 3 grants2024 4 grants2025

From 2020 to 2025, annual grant giving ranged from $41K (2024) to $56K (2023). In 2025 it made 4 grants totaling $46K.

Grant Insights

How this funder distributes its grants

Top Recipients

Top 4 recipients in 2025

Eastside College Prep School Inc: $24KEastside College Prep SchoolInc$24KUniversity of California Fdn - Davis: $10KUniversity of California Fdn -Davis$10KSaratoga Federated Church: $7KSaratoga Federated Church$7KALS Therapy Development Institute: $5KALS Therapy DevelopmentInstitute$5K

The largest 2025 recipient was Eastside College Prep School Inc ($24K). Together the top 4 received $46K.

Grant Size Distribution

20 grants across all recorded years

20<$50K$50–100K$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 20 grants of 20 (100%).

Giving History

Grant recipients and amounts by year

RecipientPurposeAmount
Eastside College Prep School Inc East Palo Alto, CAScholarships$24,000
University of California Fdn - Davis Davis, CACoffee Support Fund -$10,000
Saratoga Federated Church Saratoga, CAGrief Ministry$7,250
ALS Therapy Development Institute Watertown, MAUnrestricted General$5,000

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$50K$100K$150K$200K2020 2021 2022 2023 2024 2025
Metric202520242023
Total Assets$947,252$881,478$839,210
Revenue$136,843$102,809$60,444
Expenses$70,612$60,974$75,470
Qualifying Distributions$56,010$49,605$64,338
Net Investment Income$124,004$91,549$50,176
Distributable Amount$57,189$53,531$49,422

Data update history

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2020 (received by the IRS February 24, 2021)
  2. Updated Form 990-PF for fiscal year 2021 (received by the IRS February 7, 2022)
  3. Updated Form 990-PF for fiscal year 2022 (received by the IRS February 8, 2023)
  4. Updated Form 990-PF for fiscal year 2023 (received by the IRS February 29, 2024)
  5. Updated Form 990-PF for fiscal year 2024 (received by the IRS January 30, 2025)
  6. Updated Form 990-PF for fiscal year 2025 (received by the IRS February 13, 2026)
  7. IRS filings on file for fiscal years 2020–2025

Leadership & Key People

Officers and directors from IRS filings

Mark & Jannie Wu Family Fdn is led by Jannie T. Wu, Chairman on every filing since 2020; none of the 3 officers listed in 2025 report compensation.

Officers on the 2025 filing

  • Jannie T. Wu

    Chairman

    On filings since 2020

    2 hrs/week

    No compensation reported

  • Karen Lott

    Treasurer

    On filings since 2020

    2 hrs/week

    No compensation reported

  • Stephanie Palmer

    Secretary

    On filings since 2020

    2 hrs/week

    No compensation reported

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.

Frequently asked questions about Mark & Jannie Wu Family Fdn

How much does Mark & Jannie Wu Family Fdn give each year?

Mark & Jannie Wu Family Fdn gave $46K across 4 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $41K across 3 grants.

What is Mark & Jannie Wu Family Fdn's typical grant size?

Mark & Jannie Wu Family Fdn's median grant in 2025 was $8,625, and its average grant was $11,563, across 4 grants on its 2025 IRS Form 990-PF.

Where does Mark & Jannie Wu Family Fdn give grants?

Mark & Jannie Wu Family Fdn gives mostly in California: 89% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was Massachusetts (11%).

Does Mark & Jannie Wu Family Fdn give general operating support?

Yes: 25% of Mark & Jannie Wu Family Fdn's 2025 grants with a stated purpose (1 of 4) were for general or operating support, per its 2025 IRS Form 990-PF.

How large is Mark & Jannie Wu Family Fdn?

Mark & Jannie Wu Family Fdn reported $947K in total assets on its 2025 IRS Form 990-PF. It paid out $56K in qualifying distributions that year, against a required minimum of $57K (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 is Mark & Jannie Wu Family Fdn's EIN?

Mark & Jannie Wu Family Fdn's EIN (Employer Identification Number) is 77-0555799. IRS Form 990 filing data is available on this page for 2020–2025.

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

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