McKiernan Family Foundation

Private foundation · Grantmaker Wilmington, DE EIN: 27-2216128

McKiernan Family Foundation is a private foundation, based in Wilmington, DE. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $18K in total assets. In 2025, it awarded 1 grant totaling $10K. Net investment income was $7K.

Key facts about McKiernan Family Foundation

In short: McKiernan Family Foundation gave $10K across 1 grant in 2025 (avg $10K), mostly in Massachusetts. Source: 2025 IRS Form 990-PF.

EIN
27-2216128
Latest 990 filing
Form 990-PF, 2025
Annual giving (2025)
$10,000
Grants made (2025)
1
Average grant
$10,000
Median grant
$10,000
Total assets
$18,292
Primary geography
Massachusetts (100% 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

$18K

-50.0% YoY

Annual Giving

$10K

-95.5% YoY

Grant Count

1

-83.3% YoY

Avg Grant Size

$10K

-73.0% YoY

Under IRS private-foundation payout rules, McKiernan Family Foundation reported a distributable amount of $1K for 2025 — the minimum it must pay out in qualifying distributions.

How McKiernan Family Foundation gives

  • Giving fell 92% from 2022 to 2025. Method
  • In 2025 it paid out well above its IRS minimum distribution (the 5% rule). 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

5states

Share of the 2025 grant dollars on its one itemized grant.

Cities

BostonSan JoseChestnut HillNew YorkLas VegasWashington

Giving Over Time

Total grant dollars and number of grants per year

$0$100K$200K$300K1 grant2020 3 grants2021 2 grants2022 4 grants2023 6 grants2024 1 grant2025

From 2020 to 2025, annual grant giving ranged from $10K (2025) to $222K (2024). In 2025 it made 1 grant totaling $10K.

Grant Insights

How this funder distributes its grants

Top Recipients

Top recipient in 2025

The American Ireland Fund: $10KThe American Ireland Fund$10K

The largest 2025 recipient was The American Ireland Fund ($10K).

Grant Size Distribution

16 grants across all recorded years

12<$50K1$50–100K3$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 12 grants of 16 (75%).

Giving History

Grant recipients and amounts by year

RecipientPurposeAmount
The American Ireland Fund Boston, MAIreland Business Plan Competition through IDEATE$10,000

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$100K$200K$300K2020 2021 2022 2023 2024 2025
Metric202520242023
Total Assets$18,292$36,602$55,638
Revenue$-2,005$206,959$199,227
Expenses$16,305$225,995$152,005
Qualifying Distributions$13,525$225,525$150,525
Net Investment Income$6,639$188,737$123,152
Distributable Amount$1,123——

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 March 15, 2021)
  2. Updated Form 990-PF for fiscal year 2021 (received by the IRS April 20, 2022)
  3. Updated Form 990-PF for fiscal year 2022 (received by the IRS February 1, 2023)
  4. Updated Form 990-PF for fiscal year 2023 (received by the IRS February 14, 2024)
  5. Updated Form 990-PF for fiscal year 2024 (received by the IRS February 13, 2025)
  6. Updated Form 990-PF for fiscal year 2025 (received by the IRS February 10, 2026)
  7. IRS filings on file for fiscal years 2020–2025

Leadership & Key People

Officers and directors from IRS filings

McKiernan Family Foundation is led by William S McKiernan, President, Director & Secretary on every filing since 2020 — the only officer listed, and uncompensated.

Officers on the 2025 filing

  • William S McKiernan

    President, Director & Secretary

    On filings since 2020

    1 hr/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 McKiernan Family Foundation

How much does McKiernan Family Foundation give each year?

McKiernan Family Foundation gave $10K across 1 grant in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $222K across 6 grants.

How large is McKiernan Family Foundation?

McKiernan Family Foundation reported $18K in total assets on its 2025 IRS Form 990-PF. It paid out $14K in qualifying distributions that year, against a required minimum of $1K (roughly 5% of its investment assets).

Where does McKiernan Family Foundation operate?

McKiernan Family Foundation has awarded grants in California, District of Columbia, Massachusetts, Nevada, New York.

What is McKiernan Family Foundation's EIN?

McKiernan Family Foundation's EIN (Employer Identification Number) is 27-2216128. 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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