· Private foundation
William & Ann Trebilcock Foundation
Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.
Where the money goes
Grants by size, and the largest recipients.
| Recipient | Amount |
|---|---|
| TUNNEL TO TOWERS FOUNDATION | $7,000 |
| Individual grant recipient | $2,500 |
| SALVATION ARMY | $2,500 |
| DOCTORS WITHOUT BORDERS | $2,500 |
| ST JUDE CHILDRENS HOSPITAL | $2,500 |
| FOOD BANK OF IOWA | $2,500 |
| COVENANT HOUSE | $1,250 |
| AMBERS ANTIBODIES | $1,250 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Dollar for dollar, its grants (FY17–25) land where the poverty rate runs at 11%, against an area that typically sits at 11%. 14% of its dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.
How this is measured
Which US states its grants reach
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
Grantees it renews have grown median revenue +89% since the first grant, against +15% for those funded once.
14 repeat relationships: 7 still active in FY2025, 7 since wound down; 1 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 68% of grant dollars renewed an existing relationship; $7k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- AAAMBERS ANTIBODIES INC9× · 2017–2025 · $15k · revenue +386%
ST JUDE CHILDREN'S RESEARCH HOSPITAL INC6× · 2018–2025 · $7k · revenue +125%
MEDECINS SANS FRONTIERES USA INC6× · 2018–2025 · $7k · revenue +89%
Funded once
- YHYOUTH HOMESone grant, 2017 · $14k
- HEHAROLD EINSTEIN FOUNDATIONone grant, 2023 · $2k
- AAALZHEIMERS ASSOCIATIONone grant, 2017 · $1k
How this is measured
Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.
Closest unfunded matches
The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.
The fsmb serves as the voice for state medical boards, supporting them through education, assessment, research and advocacy while providing services and initiatives that promote patient safety, quality health care and regulatory best…
A nonprofit scientific research organization that develops vaccines and antibodies for hiv, tuberculosis, and emerging infectious diseases.
Our mission is to advance the practice of medicine through advocacy, education, and engagement with physicians throughout iowa to ensure the highest quality of care for the patients they serve.
Inspired by the gift of donation from our communities, allosource responsibly provides innovative cellular and tissue allografts to advance patient healing.
To improve the lives of people through innovative scientific and engineering research.
Meriter is dedicated to improving the health of the people and communities we serve.
Mercy Health will provide assistance, support and direction to all of the health care institutions and activities operated and maintained by its Subsidiaries. The mission of Mercy Health in performing these activities shall be to provide a…
We conduct fundamental infectious disease research to generate critical new knowledge about pathogens and their interactions with see schedule o for continuationhumans to enable the discovery and development of novel interventions,…
To support salem health, salem health west valley and related organizations.
To eliminate hunger in south dakota.
We, mercy health services-iowa and trinity health, serve together in the spirit of the gospel as a compassionate and transforming healing presence within our communities.mercy health services-iowa is a member of trinity health.
Mission: lifebanc saves and heals lives.vision: pursuing a future where organ, eye and tissue donation is embraced as an honor and a personal responsibility.values: service, teamwork, integrity, commitment, innovation, quality.
How this is measured
8 grantees tracked through their own filings, 2017–2025.
Each grant beside the grantee’s revenue from every source, year by year.
How this is measured
Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 8 of the 23 grantees resolved in that span have returns of their own we could reconcile.
Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
Grantee by grantee: a decade per organization, before and after funding
A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.
- Who funds AMBERS ANTIBODIES INC ↗
- Who funds ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
- Who funds STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds FOOD BANK OF IOWA ↗
- Who funds HOPE MINISTRIES ↗
- Who funds MAKE-A-WISH FOUNDATION OF IOWA INC ↗
- Who funds LAND O LAKES AREA ARTISANS INC ↗
How much its grantees rely on government
Each dot is one organization William & Ann Trebilcock Foundation funds: left to right is the share of its income from government, bottom to top the share from William & Ann Trebilcock Foundation. Bigger dots raise more.
How this is measured
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How do I get to William & Ann Trebilcock Foundation?
Find your warmest path to William & Ann Trebilcock Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.
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