Donald B Tanklage and Carole F Tanklage Foundation

Public charity · Grantmaker Novato, CA EIN: 20-0089179

DONALD B TANKLAGE AND CAROLE F TANKLAGE is a public charity based in Novato, California. Its 2019 filing is marked as a final return, indicating that the foundation has terminated or is winding down.

Key facts about Donald B Tanklage and Carole F Tanklage Foundation

In short: Donald B Tanklage and Carole F Tanklage Foundation gave $15.4M across 30 grants in 2020 (avg $514K), mostly in California. Source: 2020 IRS Form 990.

EIN
20-0089179
Latest 990 filing
Form 990, 2020
Annual giving (2020)
$15,409,350
Grants made (2020)
30
Average grant
$513,645
Median grant
$23,750
Primary geography
California (100% of itemized 2020 grant dollars)

Data from IRS Form 990, 2020; updated September 2026.

Financial Overview

From 2020 IRS Form 990 · View filing

Total Assets

—

Annual Giving

$15.4M

Grant Count

30

Avg Grant Size

$514K

Research compiled by Grantable AI from public sources. Last updated September 2026.

Mission & Focus Areas

The foundation’s stated mission is to engage in charitable activities consistent with MCF’s charitable purposes. MCF’s mission, as quoted by the foundation, is to encourage and apply philanthropic contributions to improve the human condition, embrace diversity, promote a humane and democratic society, and enhance community quality of life for current and future generations.

Its 2020 grants included support for a range of organizations. For example, Direct Relief describes its mission as improving the health and lives of people affected by poverty or emergencies. Amazon Watch describes its work as protecting the rainforest and advancing the rights of Indigenous peoples in the Amazon Basin. The Performing Animal Welfare Society says it provides shelter and permanent homes for abused, abandoned, and retired exotic animals. Other grantees included organizations working in education, food assistance, animal rescue, and ocean preservation.

Grantmaking

Separately, the foundation’s filing narrative says it awarded 30 grants totaling $15,409,350 during the fiscal year ended June 30, 2020; these reported totals differ.

The largest listed 2020 grant was $7,779,318 to Marin Community Foundation for operating support. Other notable grants included $45,000 to Direct Relief for medical relief in the Bahamas due to Hurricane Dorian; $45,000 each to MGVP Inc. and Ocean Voyages Institute for operating support; and $35,000 each to Amazon Watch for assistance related to the Amazon fires and to the Performing Animal Welfare Society for operating support to the San Andreas Sanctuary.

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Geographic Focus

Where this funder awards grants

The 2020 grant dollars went overwhelmingly to California recipients: the filing reports 99% for California, with Maine, Tennessee, Kansas, and Maryland each listed at 0% (rounded shares). The listed grants include recipients in California and Maine.

Grant Distribution by State

5states

Share of 2020 grant dollars across all 30 itemized grants.

Cities

San FranciscoNovatoOaklandCookevilleDavisEl GranadaGaithersburgGaltGilroyHalf Moon BayLaguna HillsMammoth LakesMartinezMenlo ParkMountain CenterPenngrovePescaderoPortlandRedwood CitySanta Barbara

Giving Over Time

Total grant dollars and number of grants per year

$0$5M$10M$15M$20M30 grants2020

In 2020 it made 30 grants totaling $15.4M.

Grant Insights

How this funder distributes its grants

Top Recipients

Top 10 recipients in 2020

Marin Community Foundation: $7.8MMarin Community Foundation$7.8MMCF Gift Fund Inc: $7.0MMCF Gift Fund Inc$7.0MDirect Relief: $45KDirect Relief$45KMGVP Inc: $45KMGVP Inc$45KOcean Voyages Institute: $45KOcean Voyages Institute$45KAmazon Watch: $35KAmazon Watch$35KPerforming Animal Welfare Society: $35KPerforming Animal WelfareSociety$35KThrive with Horses: $35KThrive with Horses$35KCoastside Opportunity Center: $30KCoastside Opportunity Center$30KBeyond Barriers Athlectic Foundation: $25KBeyond Barriers AthlecticFoundation$25K

The largest 2020 recipient was Marin Community Foundation ($7.8M). Together the top 10 received $15.1M.

Organizations only. It also paid 1 individual scholarship ($25,000), which are not listed by name.

Grant Size Distribution

30 grants across all recorded years

28<$50K$50–100K$100–250K$250–500K$500K–1M$1–5M2$5M+

The most common grant size was under $50K: 28 grants of 30 (93%).

Giving History

Grant recipients and amounts by year

RecipientPurposeAmount
Marin Community Foundation Novato, CAProvide Operating Support$7,779,318
MCF Gift Fund Inc Novato, CAProvide Operating Support$6,995,032
Direct Relief Santa Barbara, CAMedical relief in the bahamas due to hurricane dorian$45,000
MGVP Inc Davis, CAProvide Operating Support$45,000
Ocean Voyages Institute Sausalito, CAProvide Operating Support$45,000
Amazon Watch Oakland, CAAssist Environmental Crisis Due to Amazon Fires$35,000
Performing Animal Welfare Society Galt, CAOperating Support to the San Andreas Sanctuary$35,000
Thrive with Horses Martinez, CAProvide Operating Support$35,000
Coastside Opportunity Center El Granada, CAGeneral Operations and the Food Pantry$30,000
Beyond Barriers Athlectic Foundation Redwood City, CAProvide Operating Support$25,000

Financial History

Multi-year comparison from IRS filings

Filing year Revenue Expenses Grants reported
2020 $160,782 $15,484,652 $8,414,318 across 29 grants
Revenue
Expenses
Net Investment Income
$0$5M$10M$15M$20M2020
Metric2020
Revenue$160,782
Expenses$15,484,652
Net Investment Income$88,418

Data update history

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990 for fiscal year 2020 (received by the IRS May 15, 2021)
  2. IRS filings on file for fiscal year 2020

Leadership & Key People

Leadership team and compensation from IRS filings

The 2020 filing lists Carole F. Tanklage as chairperson. Directors listed are Lynne Tanklage, Kristin Tanklage Murphy, Jackson Inde Murphy, Marguerite Rose Murphy, Lani Alo, Ebony Marshall, Heather Johnson, Linda Sweeney, and Alexandra Derby.

The foundation’s filing states that its board had two classes of directors: MCF-class directors and donor-class directors. It says MCF-class directors held a majority of board seats and that the MCF class of directors were employees of MCF, identified as the foundation’s successor and supported organization.

Donald B Tanklage and Carole F Tanklage Foundation is led by Thomas Peters PhD, President & CEO on the 2020 filing; none of the 14 officers listed in 2020 report compensation.

Officers on the 2020 filing

  • Thomas Peters PhD

    President & CEO

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

  • Carole F. Tanklage

    Chairperson

    New on the 2020 filing

    5 hrs/week

    No compensation reported

  • Alexandra Derby

    Director

    New on the 2020 filing

    0.5 hrs/week

    No compensation reported

  • Ebony Marshall

    Director

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

  • Heather Johnson

    Director

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

  • Jackson Inde Murphy

    Director

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

  • Kristin Tanklage Murphy

    Director

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

  • Lani Alo

    Director

    New on the 2020 filing

    0.2 hrs/week

    No compensation reported

  • Linda Sweeney

    Director

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

  • Lynne Tanklage

    Director

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

  • Marguerite Rose Murphy

    Director

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

  • Vikki Garrod

    Director

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

  • Ashley Smith

    Secretary

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

  • Sa Hartman

    CFO

    New on the 2020 filing

    0.1 hrs/week

    No compensation reported

Data from IRS Form 990 filings, 2020. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.

Contact

Mailing address: 5 Hamilton Landing No 200, Novato, CA 94949
Phone: (415) 464-2500

Frequently asked questions about Donald B Tanklage and Carole F Tanklage Foundation

How much does Donald B Tanklage and Carole F Tanklage Foundation give each year?

Donald B Tanklage and Carole F Tanklage Foundation gave $15.4M across 30 grants in 2020, according to its 2020 IRS Form 990.

What is Donald B Tanklage and Carole F Tanklage Foundation's typical grant size?

Donald B Tanklage and Carole F Tanklage Foundation's median grant in 2020 was $23,750, and its average grant was $513,645, across 30 grants on its 2020 IRS Form 990.

Where does Donald B Tanklage and Carole F Tanklage Foundation give grants?

Donald B Tanklage and Carole F Tanklage Foundation gives mostly in California: 100% of the grant dollars itemized on its 2020 IRS Form 990 went to recipients there. The most frequent recipient cities were San Francisco, CA (4 grants), Novato, CA (2 grants) and Oakland, CA (2 grants).

Does Donald B Tanklage and Carole F Tanklage Foundation give general operating support?

Yes: 80% of Donald B Tanklage and Carole F Tanklage Foundation's 2020 grants with a stated purpose (24 of 30) were for general or operating support, per its 2020 IRS Form 990.

Who are Donald B Tanklage and Carole F Tanklage Foundation's largest grantees?

Donald B Tanklage and Carole F Tanklage Foundation's largest 2020 grantees include Marin Community Foundation ($7,779,318), MCF Gift Fund Inc ($6,995,032) and Direct Relief ($45,000), according to its 2020 IRS Form 990. It also paid 1 individual scholarship ($25,000), which are not listed by name. Together they received 96% of its itemized 2020 grant dollars.

What does Donald B Tanklage and Carole F Tanklage Foundation fund?

The foundation’s stated mission is to engage in charitable activities consistent with MCF’s charitable purposes. See mission & focus areas ↑

How do I apply for a grant from Donald B Tanklage and Carole F Tanklage Foundation?

Donald B Tanklage and Carole F Tanklage Foundation has no public application process in the sources Grantable reviewed. Contact the foundation directly before submitting a request.

What is Donald B Tanklage and Carole F Tanklage Foundation's EIN?

Donald B Tanklage and Carole F Tanklage Foundation's EIN (Employer Identification Number) is 20-0089179. IRS Form 990 filing data is available on this page for 2020.

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

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