Alvin James Hansen Foundation

Private foundation · Grantmaker Petaluma, CA EIN: 36-4750791

Alvin James Hansen Foundation is a private foundation, based in Petaluma, CA. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $8.8M in total assets. In 2025, it awarded 5 grants totaling $175K. Net investment income was $319K.

Alvin James Hansen Foundation at a glance

In short: Alvin James Hansen Foundation gave $175K across 5 grants in 2025 (avg $35K), mostly in California. Source: 2025 IRS Form 990-PF.

Annual giving (2025)
$175,100
-57.4% vs 2024
Grants made (2025)
5
+0.0% vs 2024
Average grant
$35,020
-57.4% vs 2024
Median grant
$37,500
Total assets
$8,785,203
+1.6% vs 2024
Primary geography
California (100% of itemized 2025 grant dollars)
Latest 990 filing
Form 990-PF, 2025 View filing

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

Who Alvin James Hansen Foundation funds

How this funder distributes its grants

Top Recipients

Top 5 recipients in 2025

Sonoma Valley High School Ag: $50KSonoma Valley High School Ag$50KTwo Rock Fire Dept: $42KTwo Rock Fire Dept$42KSonoma County Fair Foundation: $38KSonoma County Fair Foundation$38KSonoma-Marin Ag Assn: $31KSonoma-Marin Ag Assn$31KSonoma County Farm Bureau: $15KSonoma County Farm Bureau$15K

The largest 2025 recipient was Sonoma Valley High School Ag ($50K). Together the top 5 received $175K.

Grant Size Distribution

22 grants across all recorded years

12<$50K1$50–100K8$100–250K1$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 12 grants of 22 (55%).

Geographic Focus

Where this funder awards grants

Grant Distribution by State

1state

Share of 2025 grant dollars across all 5 itemized grants.

States

Cities

Santa RosaPetalumaForestvilleNapaSonomaSt HelenaTomalesHealdsburgSebastopol

How Alvin James Hansen Foundation gives

  • Giving fell 67% from 2022 to 2025. Method

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

Giving History

Giving Over Time

Total grant dollars and number of grants per year

$0$200K$400K$600K13 grants2019 6 grants2020 4 grants2021 5 grants2022 3 grants2023 5 grants2024 5 grants2025

From 2019 to 2025, annual grant giving ranged from $175K (2025) to $535K (2022). In 2025 it made 5 grants totaling $175K.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
Sonoma Valley High School Ag Sonoma, CAEducation$50,000
Two Rock Fire Dept Petaluma, CAVarious$41,600
Sonoma County Fair Foundation Santa Rosa, CAScholarships and Grants$37,500
Sonoma-Marin Ag Assn Santa Rosa, CAScholarships and Grants$31,000
Sonoma County Farm Bureau Santa Rosa, CAGrants, Scholarships, Ag Days Sponsorship$15,000
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Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsQualifying DistributionsNet Investment Income
2025$8,785,203$352,387$213,065$175,1005$175,100$319,421
2024$8,645,881$270,175$440,763$410,8835$411,733$294,120
2023$8,816,469$287,416$252,087$217,0003$217,962$256,515
2022$8,781,140$250,307$577,401$535,0005$535,863$224,338
2021$9,106,275$247,540$428,875$395,0004—$215,284
2020$9,289,764$294,152$545,305$512,7006—$262,753
2019$9,441,952$232,876$407,676$400,00013—$232,876

Leadership & Key People

Officers and directors from IRS filings

Alvin James Hansen Foundation is led by Warren Thom Knudson, President since 2023 (on filings since 2019); none of the 5 officers listed in 2025 report compensation.

Officers on the 2025 filing

  • Warren Thom Knudson

    President

    Trustee → President, 2023

    On filings since 2019

    No compensation reported

  • Edie Cheda

    Director

    On filings since 2023

    No compensation reported

  • Jacob Dunn

    Director

    On filings since 2023

    No compensation reported

  • Christopher Dobson

    Treasurer

    Trustee → Treasurer, 2023

    On filings since 2019

    No compensation reported

  • Michael F. Tomasini

    Secretary

    Trustee → Secretary, 2023

    On filings since 2019

    No compensation reported

Data from IRS Form 990 filings, 2019–2025. "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 Alvin James Hansen Foundation

How much does Alvin James Hansen Foundation give each year?

Alvin James Hansen Foundation gave $175K across 5 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $411K across 5 grants.

What is Alvin James Hansen Foundation's typical grant size?

Alvin James Hansen Foundation's median grant in 2025 was $37,500, and its average grant was $35,020, across 5 grants on its 2025 IRS Form 990-PF.

Where does Alvin James Hansen Foundation give grants?

Alvin James Hansen Foundation gives mostly in California: 100% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Santa Rosa, CA (3 grants).

Does Alvin James Hansen Foundation give general operating support?

Not in 2025: none of the 5 grants with a stated purpose on Alvin James Hansen Foundation's 2025 IRS Form 990-PF were described as general or operating support.

Who are Alvin James Hansen Foundation's largest grantees?

Alvin James Hansen Foundation's largest 2025 grantees include Sonoma Valley High School Ag ($50,000), Two Rock Fire Dept ($41,600) and Sonoma County Fair Foundation ($37,500), according to its 2025 IRS Form 990-PF. Together they received 74% of its itemized 2025 grant dollars.

How large is Alvin James Hansen Foundation?

Alvin James Hansen Foundation reported $8.8M in total assets on its 2025 IRS Form 990-PF. Its revenue that year was $352K.

What is Alvin James Hansen Foundation's EIN?

Alvin James Hansen Foundation's EIN (Employer Identification Number) is 36-4750791. IRS Form 990 filing data is available on this page for 2019–2025.

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

Data update history

(8)

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2019 (received by the IRS February 7, 2020)
  2. Updated Form 990-PF for fiscal year 2020 (received by the IRS February 27, 2021)
  3. Updated Form 990-PF for fiscal year 2021 (received by the IRS November 11, 2021)
  4. Updated Form 990-PF for fiscal year 2022 (received by the IRS August 29, 2022)
  5. Updated Form 990-PF for fiscal year 2023 (received by the IRS August 8, 2023)
  6. Updated Form 990-PF for fiscal year 2024 (received by the IRS May 14, 2025)
  7. Added Form 990-PF for fiscal year 2025 (received by the IRS May 15, 2026)
  8. IRS filings on file for fiscal years 2019–2024

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

Figures come from Alvin James Hansen 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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