The Biomarkers Shaping the Future of PSP Research

A new paper explores advances in neuroimaging, fluid biomarkers, and digital health that could improve PSP diagnosis, disease tracking, and therapeutic development

AAIC 2026: Tau Takes Center Stage

Opening Doors to Art, Science, and History

Remembering Walter Rainwater

Learn About Walter’s Legacy

Every Sample Counts: How Biorepositories Can Accelerate Answers for Primary Tauopathies

Opening Doors with Program-Related Investing

school

Family Economic Security Funding:

Since 2012

$240,300,000+

stethoscope

Medical Research Funding:

Since 2012

$166,700,000+

public

Other Foundation Funding:

Since 2012

$103,900,000+

“Let’s give it all away. But let’s do it in a particular way, with our hearts and our minds. Let’s find what works and support that.”

Richard E. Rainwater

Founder, The Rainwater Charitable Foundation

Read About Our Founder

Foundation Overview

The Rainwater Charitable Foundation (RCF) is a private family foundation based in Fort Worth, Texas, founded by Richard E. Rainwater in 1991. We approach our philanthropic giving with humility, and pursue initiatives where we can involve partnerships and measure impact.

Our Mission & Values

Our Founder & History

Our People

Program Areas

In all areas of giving, RCF seeks to employ the same strategies and values that Mr. Rainwater used for business investments. We seek out programs with measurable success, strong leadership and the ability to scale for greater impact.

Family Economic Security Program

We are committed to serving North Texas families and children through supporting quality education, upskilling, affordable housing, and childcare.

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Medical Research Program

With a drive to find a cure for tauopathies, our research is focused on accelerating the development of new treatments for neurodegenerative diseases.

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Other Foundation Programs

From Africa to Fort Worth, we support a diverse range of organizations that create a world where everyone can thrive, regardless of their background or circumstances.

Learn More