Grants paid by Thomas O Brown Foundation
EIN 22-3894171 · Warrenville, IL · Form 990-PF, Part XV · NTEE T20
Thomas O Brown Foundation of Warrenville, IL (EIN 22-3894171) reported 55 grants paid totaling $1,113,500 to 18 recipients in tax years 2018–2024, on Form 990-PF, Part XV. Derived from IRS e-file data, dataset version 2026.09.0, built 2026-09-03.
Grants paid
$1,113,500
55 grants
Recipients
18
distinct organizations
Tax years
2018–2024
5 filings in the corpus
By tax year
| Tax year | Grants paid | Amount paid | Approved for future |
|---|---|---|---|
| 2018 | 10 | $218,500 | — |
| 2020 | 10 | $189,000 | — |
| 2022 | 11 | $194,000 | — |
| 2023 | 13 | $262,500 | — |
| 2024 | 11 | $249,500 | — |
Top recipients
The 18 recipients receiving the most from Thomas O Brown Foundation, by grants paid, out of 18 distinct recipients.
| Recipient | Match | Location | Grants | Total paid | Latest year |
|---|---|---|---|---|---|
| Greater Yellowstone Coalition 81-0414042 | C | Bozeman, MT | 5 | $150,000 | 2024 |
| National Parks Conservation Assn 53-0225165 | B | Washington, DC | 5 | $140,000 | 2024 |
| Grand Teton Nat Park Fdn 83-0322668 | D | Moose, WY | 5 | $128,000 | 2024 |
| Glacier National Park Conservancy 56-2579734 | B | Columbia Falls, MT | 2 | $110,000 | 2024 |
| Save the Redwoods League 94-0843915 | B | San Francisco, CA | 5 | $95,000 | 2024 |
| Palouse Land Trust 94-3219418 | B | Moscow, ID | 4 | $65,000 | 2024 |
| Washington's National Park Fund 01-0869799 | C | Seattle, WA | 5 | $60,500 | 2024 |
| Latah Trail Foundation 82-0502602 | B | Moscow, ID | 3 | $60,000 | 2022 |
| Glacier National Park Fund | U | Columbia Falls, MT | 1 | $60,000 | 2018 |
| Public Land Alliance 54-1123356 | C | Washington, DC | 3 | $45,000 | 2024 |
| Zion National Park Forever Project | U | Springdale, UT | 4 | $45,000 | 2023 |
| Tart Trails | U | Traverse City, MI | 2 | $40,000 | 2024 |
| Texas Parks and Wildlife Foundation 74-6066292 | D | Dallas, TX | 2 | $35,000 | 2023 |
| Rocky Mountain Conservancy 84-0472090 | B | Estes Park, CO | 2 | $35,000 | 2024 |
| Public Land Alliance | U | Silver Spring, MD | 1 | $25,000 | 2020 |
| Public Lands Alliance | U | Silver Spring, MD | 1 | $15,000 | 2018 |
| National Park Foundation 52-1086761 | B | Washington, DC | 4 | $4,000 | 2023 |
| National Park Foundation | U | Baltimore, MD | 1 | $1,000 | 2024 |
Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.
Every grant
All 55 grant rows this organization reported, most recent first.
| Tax year | Recipient | Match | Amount | Type | Purpose | Source filing |
|---|---|---|---|---|---|---|
| 2024 | Glacier National Park Conservancy Columbia Falls, MT | B | $60,000 | paid | PRESERVATION OF PARK LANDS | 202511329349101186 |
| 2024 | National Parks Conservation Association Washington, DC | B | $40,000 | paid | PRESERVATION OF LAND/WILDLIFE | 202511329349101186 |
| 2024 | Grand Teton National Park Foundation Moose, WY | B | $30,000 | paid | PARK PRESERVATION | 202511329349101186 |
| 2024 | Greater Yellowstone Coalition Bozeman, MT | B | $30,000 | paid | PRESERVATION OF LAND/WILDLIFE | 202511329349101186 |
| 2024 | Washington's National Park Fund Seattle, WA | B | $20,000 | paid | PRESERVATION OF MT. RAINIER, NORTH CASCADES, AND OLYMPIC NATIONAL PARKS | 202511329349101186 |
| 2024 | Rocky Mountain Conservancy Estes Park, CO | B | $20,000 | paid | NATIONAL PARKS PRESERVATION | 202511329349101186 |
| 2024 | Save the Redwoods League San Francisco, CA | B | $15,000 | paid | PROTECT AND CONSERVE REDWOOD TREES | 202511329349101186 |
| 2024 | Tart Trails Traverse City, MI | U | $13,500 | paid | ENRICH THE TRAVERSE REGION BY PROVIDING A NETWORK OF TRAILS, BIKEWAYS, AND PEDESTRIAN WAYS | 202511329349101186 |
| 2024 | Palouse Land Trust Moscow, ID | B | $10,000 | paid | LAND CONSERVATION OF THE PALOUSE REGION | 202511329349101186 |
| 2024 | Public Land Alliance Washington, DC | C | $10,000 | paid | NATIONAL PARKS PRESERVATION | 202511329349101186 |
| 2024 | National Park Foundation Baltimore, MD | U | $1,000 | paid | NATIONAL PARKS PRESERVATION | 202511329349101186 |
| 2023 | Glacier National Park Conservancy Columbia Falls, MT | B | $50,000 | paid | PRESERVATION OF PARK LANDS | 202401649349101200 |
| 2023 | Greater Yellowstone Coalition Bozeman, MT | C | $30,000 | paid | PRESERVATION OF LAND/WILDLIFE | 202401649349101200 |
| 2023 | Palouse Land Trust Moscow, ID | B | $30,000 | paid | LAND CONSERVATION OF THE PALOUSE REGION | 202401649349101200 |
| 2023 | Tart Trails Traverse City, MI | U | $26,500 | paid | ENRICH THE TRAVERSE REGION BY PROVIDING A NETWORK OF TRAILS, BIKEWAYS, AND PEDESTRIAN WAYS | 202401649349101200 |
| 2023 | National Parks Conservation Assn Washington, DC | B | $25,000 | paid | PRESERVATION OF LAND/WILDLIFE | 202401649349101200 |
| 2023 | Grand Teton Nat Park Fdn Moose, WY | D | $25,000 | paid | PARK PRESERVATION | 202401649349101200 |
| 2023 | Rocky Mountain Conservancy Estes Park, CO | B | $15,000 | paid | NATIONAL PARKS PRESERVATION | 202401649349101200 |
| 2023 | Texas Parks and Wildlife Foundation Dallas, TX | D | $15,000 | paid | NATIONAL PARKS PRESERVATION | 202401649349101200 |
| 2023 | Save the Redwoods League San Francisco, CA | B | $15,000 | paid | PROTECT AND CONSERVE REDWOOD TREES | 202401649349101200 |
| 2023 | Public Land Alliance Washington, DC | C | $10,000 | paid | NATIONAL PARKS PRESERVATION | 202401649349101200 |
| 2023 | Zion National Park Forever Project Springdale, UT | U | $10,000 | paid | TO PROMOTE ENVIROMENTAL CONSERVATION | 202401649349101200 |
| 2023 | Washington's National Park Fund Seattle, WA | C | $10,000 | paid | PRESERVATION OF MT. RAINIER, NORTH CASCADES, AND OLYMPIC NATIONAL PARKS | 202401649349101200 |
| 2023 | National Park Foundation Washington, DC | B | $1,000 | paid | NATIONAL PARKS PRESERVATION | 202401649349101200 |
| 2022 | Greater Yellowstone Coalition Bozeman, MT | C | $30,000 | paid | PRESERVATION OF LAND/WILDLIFE | 202332599349100308 |
| 2022 | National Parks Conservation Assn Washington, DC | B | $25,000 | paid | PRESERVATION OF LAND/WILDLIFE | 202332599349100308 |
| 2022 | Public Land Alliance Washington, DC | C | $25,000 | paid | NATIONAL PARKS PRESERVATION | 202332599349100308 |
| 2022 | Grand Teton Nat Park Fdn Moose, WY | D | $25,000 | paid | PARK PRESERVATION | 202332599349100308 |
| 2022 | Texas Parks and Wildlife Foundation Dallas, TX | D | $20,000 | paid | NATIONAL PARKS PRESERVATION | 202332599349100308 |
| 2022 | Zion National Park Forever Project Springdale, UT | U | $15,000 | paid | TO PROMOTE ENVIROMENTAL CONSERVATION | 202332599349100308 |
| 2022 | Save the Redwoods League San Francisco, CA | B | $15,000 | paid | PROTECT AND CONSERVE REDWOOD TREES | 202332599349100308 |
| 2022 | Palouse Land Trust Moscow, ID | B | $15,000 | paid | LAND CONSERVATION OF THE PALOUSE REGION | 202332599349100308 |
| 2022 | Washington's National Park Fund Seattle, WA | C | $13,000 | paid | PRESERVATION OF MT. RAINIER, NORTH CASCADES, AND OLYMPIC NATIONAL PARKS | 202332599349100308 |
| 2022 | Latah Trail Foundation Moscow, ID | B | $10,000 | paid | PROMOTE SAFE NON-MOTORIZED TRANSPORTATION IN LATAH COUNTY | 202332599349100308 |
| 2022 | National Park Foundation Washington, DC | B | $1,000 | paid | NATIONAL PARKS PRESERVATION | 202332599349100308 |
| 2020 | Greater Yellowstone Coalition Bozeman, MT | C | $30,000 | paid | PRESERVATION OF LAND/WILDLIFE | 202141899349100904 |
| 2020 | Grand Teton Nat Park Fdn Moose, WY | D | $28,000 | paid | PARK PRESERVATION | 202141899349100904 |
| 2020 | Latah Trail Foundation Moscow, ID | B | $25,000 | paid | PROMOTE SAFE NON-MOTORIZED TRANSPORTATION IN LATAH COUNTY | 202141899349100904 |
| 2020 | National Parks Conservation Assn Washington, DC | B | $25,000 | paid | PRESERVATION OF LAND/WILDLIFE | 202141899349100904 |
| 2020 | Save the Redwoods League San Francisco, CA | B | $25,000 | paid | PROTECT AND CONSERVE REDWOOD TREES | 202141899349100904 |
| 2020 | Public Land Alliance Silver Spring, MD | U | $25,000 | paid | NATIONAL PARKS PRESERVATION | 202141899349100904 |
| 2020 | Palouse Land Trust Moscow, ID | B | $10,000 | paid | LAND CONSERVATION OF THE PALOUSE REGION | 202141899349100904 |
| 2020 | Zion National Park Forever Project Springdale, UT | U | $10,000 | paid | TO PROMOTE ENVIROMENTAL CONSERVATION | 202141899349100904 |
| 2020 | Washington's National Park Fund Seattle, WA | C | $10,000 | paid | PRESERVATION OF MT. RAINIER, NORTH CASCADES, AND OLYMPIC NATIONAL PARKS | 202141899349100904 |
| 2020 | National Park Foundation Washington, DC | B | $1,000 | paid | NATIONAL PARKS PRESERVATION | 202141899349100904 |
| 2018 | Glacier National Park Fund Columbia Falls, MT | U | $60,000 | paid | PRESERVATION OF PARK LANDS | 201941349349101499 |
| 2018 | Greater Yellowstone Coalition Bozeman, MT | C | $30,000 | paid | PRESERVATION OF LAND/WILDLIFE | 201941349349101499 |
| 2018 | Latah Trail Foundation Moscow, ID | B | $25,000 | paid | PROMOATE SAFE NON-MOTORIZED TRANSPORTATION IN LATAH COUNTY. | 201941349349101499 |
| 2018 | National Parks Conservation Assn Washington, DC | B | $25,000 | paid | PRESERVATION OF LAND/WILDLIFE | 201941349349101499 |
| 2018 | Save the Redwoods League San Francisco, CA | B | $25,000 | paid | PROTECT AND CONSERVE REDWOOD TREES. | 201941349349101499 |
| 2018 | Grand Teton Nat Park Fdn Moose, WY | D | $20,000 | paid | PARK PRESERVATION | 201941349349101499 |
| 2018 | Public Lands Alliance Silver Spring, MD | U | $15,000 | paid | NATIONAL PARKS PRESERVATION | 201941349349101499 |
| 2018 | Zion National Park Forever Project Sprindale, UT | U | $10,000 | paid | TO PROMOTE ENVIROMENTAL CONSERVATION. | 201941349349101499 |
| 2018 | Washington's National Park Fund Seattle, WA | C | $7,500 | paid | PRESERVATION OF MT. RAINIER, NORTH CASCADES, AND OLYMPIC NATIONAL PARKS. | 201941349349101499 |
| 2018 | National Park Foundation Washington, DC | B | $1,000 | paid | NATIONAL PARKS PRESERVATION | 201941349349101499 |
Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.
Recipient matching for this dataset version has not yet completed its independent precision check. Tier A rows carry the EIN the filer reported; tiers B–D are the matcher's inference and should be read as leads until the check is published on the methodology page.
Source filings
Every figure above is traceable to one of these IRS e-file returns by its OBJECT_ID.
| Form | Tax year | Period end | Filed | Schema | IRS OBJECT_ID |
|---|---|---|---|---|---|
| 990PF | 2024 | 2024-12-31 | not stated | 2024v5.1 | 202511329349101186 |
| 990PF | 2023 | 2023-12-31 | not stated | 2023v5.0 | 202401649349101200 |
| 990PF | 2022 | 2022-12-31 | not stated | 2022v5.0 | 202332599349100308 |
| 990PF | 2020 | 2020-12-31 | not stated | 2020v4.0 | 202141899349100904 |
| 990PF | 2018 | 2018-12-31 | not stated | 2018v3.1 | 201941349349101499 |
Derived from IRS Form 990-PF e-file XML; recipient identities from the IRS Exempt Organizations Business Master File. Dataset version 2026.09.0, built 2026-09-03. The same rows as Parquet: manifest; as JSON: /api/funders/223894171.json.
The same organization elsewhere in the program: exempt status and filing health · federal awards · grant guidance · open opportunities.
This is informational only, derived from public data on the dates shown. It is not an eligibility determination, and not legal, tax, or accounting advice. Verify against the official source before relying on it.