THE HEISING-SIMONS FOUNDATION

AI Summary
The Heising-Simons Foundation is a 501(c)3 grantmaking organization that focuses on strategic funding through a relationship-based approach, making grants by invitation only. In 2024, the foundation paid a total of $149.6 million across 817 grantees, but it does not accept unsolicited proposals. Nonprofits interested in engaging with the foundation can explore warm-introduction pathways via Impala's Funder Prospecting.
Was this helpful?
This summary is AI-generated from ChatGPT. It’s meant to be helpful, but isn’t always perfect.
Cause Areas
1
Foundations
Explore this org's ecosystem
See top causes for this funder's grantees, who else funds them, and their grants.
Learn about Ecosystems


Explore this org's ecosystem
See top causes for this funder's grantees, who else funds them, and their grants.
Learn about Ecosystems
Grantee
Total Funding
Funding Share

ENVIRONMENTAL DEFENSE FUND INCORPORATED
$39.9M
3%
NEW VENTURE FUND
$37.8M
3%

Natural Resources Defense Council Inc
$34.4M
3%
Evaluate your own portfolio
Understand the health of your own grantees and uncover signs of risk.


Evaluate your own portfolio
Understand the health of your own grantees and uncover signs of risk.
Total No. of Grants
671
Median 1st year grant
$100K
Median 2nd year grant
$150K
Top 3 Grants
Matched grants only
Grantee
Grant Size
Frequently Asked Questions
Can I submit an unsolicited grant proposal to THE HEISING-SIMONS FOUNDATION?
No. THE HEISING-SIMONS FOUNDATION does not accept unsolicited proposals. Funding is by invitation only.
Where does THE HEISING-SIMONS FOUNDATION give?
THE HEISING-SIMONS FOUNDATION primarily gives to organizations located in California, District Of Columbia, and New York. These states represent the largest share of the foundation’s grantmaking by dollars awarded. Additional geographic details are available to registered users.
What size are THE HEISING-SIMONS FOUNDATION’s grants?
The largest share of grants from THE HEISING-SIMONS FOUNDATION fall in the $100 thousand to $250 thousand range. The median first-year grant is about $100 thousand. More detailed grant size data is available to registered users.
How many grants does THE HEISING-SIMONS FOUNDATION make each year?
In 2024, THE HEISING-SIMONS FOUNDATION awarded about 670 grants, totaling nearly $149.6 million. More detailed grant metrics are available to registered users.
Who did THE HEISING-SIMONS FOUNDATION fund recently?
In 2024, THE HEISING-SIMONS FOUNDATION awarded grants to about 820 grantees. Recent grantees include ENVIRONMENTAL DEFENSE FUND INCORPORATED, NEW VENTURE FUND, and Natural Resources Defense Council Inc. More detailed information on all recent recipients is available to registered users.
How do we apply to THE HEISING-SIMONS FOUNDATION?
THE HEISING-SIMONS FOUNDATION does not accept unsolicited proposals. Funding is by invitation only.
Copyright 2026. All rights reserved to Chario Inc. (d.b.a. Impala)