Funding search · EIN 912001806 · Palo Alto, CA
The Charles and Roberta Katz
A private foundation (files IRS Form 990-PF). Most private foundations do not take unsolicited applications; the route in is usually a program officer.
- 42
- grants reported
- $1.1M
- total given
- 2022–2025
- filing years
- $12,000
- median grant
Based on grants this organization reported to the IRS for tax years 2022–2025. This is what they filed, not a complete record of their giving, and recent years may be incomplete because filings lag.
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Funding pattern
What this funder pays for, at what size, and how to position adjacent work. Read from their filings, with every number checked against the record.
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Top recipients
Repeat recipients are the strongest signal of whether a funder has an open door or quietly re-funds the same organizations.
- Earth Justice4 grants · $340,000
- Exploratorium4 grants · $310,000
- National Park Conservation Association (Npca)4 grants · $122,000
- Stanford University4 grants · $98,000
- Lifemoves4 grants · $70,000
- Second Harvest4 grants · $55,000
- Tidelines Institute3 grants · $45,000
- East Palo Alto Academy Foundation4 grants · $30,000
- World Wildlife Fund4 grants · $20,000
- Tropical Landscape and Climate Program1 grant · $6,000
Giving over time
Grant history
All 42 reported grants, largest first.
- $85,000
Earth Justice · San Francisco, CA · 2025
General funding
- $85,000
Exploratorium · San Francisco, CA · 2025
General funding
- $85,000
Earth Justice · San Francisco, CA · 2024
General funding
- $85,000
Earth Justice · San Francisco, CA · 2023
General funding
- $85,000
Earth Justice · San Francisco, CA · 2022
General funding
- $75,000
Exploratorium · San Francisco, CA · 2024
General funding
- $75,000
Exploratorium · San Francisco, CA · 2023
General funding
- $75,000
Exploratorium · San Francisco, CA · 2022
General funding
- $62,000
Stanford University · Stanford, CA · 2022
General funding
- $34,000
National Park Conservation Association (Npca) · Washington, DC · 2024
General funding
- $33,000
National Park Conservation Association (Npca) · Washington, DC · 2025
General funding
- $30,000
National Park Conservation Association (Npca) · Washington, DC · 2023
General funding
- $25,000
Tidelines Institute · Gustavus, AK · 2023
General funding
- $25,000
National Park Conservation Association (Npca) · Washington, DC · 2022
General funding
- $20,000
Lifemoves · Menlo Park, CA · 2025
General funding
- $20,000
Lifemoves · Menlo Park, CA · 2024
General funding
- $20,000
Lifemoves · Menlo Park, CA · 2023
General funding
- $15,000
Second Harvest · Chicago, IL · 2025
General funding
- $15,000
Second Harvest · Chicago, IL · 2024
General funding
- $15,000
Second Harvest · Chicago, IL · 2023
General funding
- $12,000
Stanford University · Stanford, CA · 2025
General funding
- $12,000
Stanford University · Stanford, CA · 2024
General funding
- $12,000
Stanford University · Stanford, CA · 2023
General funding
- $10,000
East Palo Alto Academy Foundation · Palo Alto, CA · 2025
General funding
- $10,000
Tidelines Institute · Gustavus, AK · 2025
General funding
- $10,000
East Palo Alto Academy Foundation · Palo Alto, CA · 2024
General funding
- $10,000
Tidelines Institute · Gustavus, AK · 2024
General funding
- $10,000
Lifemoves · Menlo Park, CA · 2022
General funding
- $10,000
Second Harvest · Chicago, IL · 2022
General funding
- $6,000
Tropical Landscape and Climate Program · Fairbanks, AK · 2025
General funding
- $5,000
Mary'S Place · Seattle, WA · 2025
General funding
- $5,000
World Wildlife Fund · Washington, DC · 2025
General funding
- $5,000
World Wildlife Fund · Washington, DC · 2024
General funding
- $5,000
East Palo Alto Academy Foundation · Palo Alto, CA · 2023
General funding
- $5,000
Organization for Tropical Studies · Durham, NC · 2023
General funding
- $5,000
World Wildlife Fund · Washington, DC · 2023
General funding
- $5,000
East Palo Alto Academy Foundation · Palo Alto, CA · 2022
General funding
- $5,000
World Wildlife Fund · Washington, DC · 2022
General funding
- $4,000
Free Arts Nyc · New York City, NY · 2025
General funding
- $2,500
Deschutes River Alliance · Portland, OR · 2022
General funding
- $1,000
Deschutes River Alliance · Portland, OR · 2024
General funding
- $1,000
Deschutes River Alliance · Portland, OR · 2023
General funding
Who else funds this kind of work
Same state
- Silicon Valley Community Foundation10,471 grants · $10.10B
- Tides Foundation9,402 grants · $1.86B
- UCLA Foundation276 grants · $1.75B
Similar grant size
- The Ayco Charitable Foundation15,303 grants · $2.05B
- Paypal Charitable Giving Fund32,081 grants · $1.40B
- Seattle Foundation14,012 grants · $457.3M
Grants already paid are the record; PaperOrbit reads your paper and finds the funders whose record matches it — then explains why.
Search funders like this oneSource: IRS Form 990-PF, Part XV, as filed by the foundation. These are grants already paid — a record of what this funder backs, not an open call.

