NATUREBRIDGE

SAUSALITO, CA, 94965 (415) 992-4700 Est. 1971 EIN 94-2145930
C60M - Environment 990 - Public charity return 501(c)(3)
www.naturebridge.org

Mission

TO CONNECT YOUNG PEOPLE TO THE WONDER AND SCIENCE OF THE NATURAL WORLD, IGNITING SELF-DISCOVERY AND INSPIRING STEWARDSHIP OF OUR PLANET.

Giving Portfolio

Total Grants
330
Total Giving
$31.4M
Recipients
243
Years Active
2017 - 2024
Avg grant: $260,777 Median: $8,581

Yearly Trends

YearGrantsTotal Giving Avg GrantNewRepeat
202484$832K $10K2136
202276$2.4M $31K1839
202119$26.0M $1.4M49
20201$127K $127K01
201950$566K $11K1028
2017100$1.5M $15K770

Sectors Funded

Education
79
Recreation & Sports
4
Human Services
3
Youth Development
1
Arts, Culture & Humanities
1
Environment
1

Top States

California
211
District of Columbia
62
Washington
41
Virginia
10
Texas
4
Oregon
2

Grantee Size Profile

$10M - $50M
42
Over $50M
16
$100K - $500K
14
$1M - $5M
11
$5M - $10M
5
Under $100K
4
$500K - $1M
2

Top Grantees

Page 1 of 3
NATIONAL PARK SERVICE
DC - 2 grants
$27.4M
NATIONAL PARK SERVICE
CA
$517K
GOLDEN GATE NATIONAL RECREATION AREA
CA
$127K
LAFAYETTE ELEMENTARY SCHOOL
DC - 4 grants
$86K
TX - 3 grants
$78K
MURCH ELEMENTARY SCHOOL
DC - 3 grants
$61K
GRAHAM MIDDLE SCHOOL
CA - 3 grants
$50K
CRITTENDEN MIDDLE SCHOOL
CA - 3 grants
$48K
ALIANZA SCHOOL
CA - 4 grants
$47K

Grants Awarded · 99 grants

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Financials

Total Revenue
$22,346,456
Total Expenses
$20,969,540
Net Assets
$16,297,279
276 employees 100 volunteers
From latest filing (tax period ending 2025-06-30)

Financial Health

Operating Reserve
9.3 months Healthy
Net assets / monthly expenses
Year-over-Year Change
Revenue ↑ 10.7%
Expenses ↑ 13.7%
Revenue Sources
Contributions 19.1% Earned revenue 79.5% Investment 2.5%
Expense Breakdown
Program 82.8% Management 11.7% Fundraising 5.5%

Officers & Trustees (38)

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Filing History (6 filings)

YearRevenueExpensesNet Assets
2024 990 - Public charity return
Jul 1, 2024 to Jun 30, 2025
$22,346,456 ↑$20,969,540$16,297,279
2022 990 - Public charity return
Jul 1, 2022 to Jun 30, 2023
$15,595,938 ↑$17,581,075$12,856,685
2021 990 - Public charity return
Jul 1, 2021 to Jun 30, 2022
$11,430,799 ↑$36,511,631$14,707,952
2020 990 - Public charity return
Jul 1, 2020 to Jun 30, 2021
$7,780,069 ↓$5,802,900$40,300,753
2019 990 - Public charity return
Jul 1, 2019 to Jun 30, 2020
$15,639,255 ↓$15,153,725$37,956,191
2017 990 - Public charity return
Jul 1, 2017 to Jun 30, 2018
$21,334,330 $19,073,203$36,702,584

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EIN: 94-2145930 · Source: IRS Form 990 e-file data