| Priscilla and Michael Baldwinfoundation | | Honolulu, HI | Local | 7 | 2024 | $5,659,036 |
| Peter & Nancy Salter Family Foundation Inc | | Phoenix, AZ | Local | 5 | 2024 | $1,755,000 |
| Community Foundation for Southern Arizona | | Tucson, AZ | Local | 6 | 2024 | $286,801 |
| Woodin Laboratory C/O M N Advisory Services LLC | | | Local | 2 | 2024 | $280,000 |
| Flinn Foundation | | Phoenix, AZ | Local | 5 | 2024 | $193,000 |
| Jewish Community Foundation of Southern Arizona | | Tucson, AZ | Local | 1 | 2024 | $102,500 |
| Haskell Fund | | Cleveland, OH | National | 7 | 2024 | $64,046 |
| Fred and Christine Armstrong Foundation | | Tucson, AZ | Local | 8 | 2024 | $60,600 |
| Evim Foundation | | Tucson, AZ | National | 7 | 2024 | $51,000 |
| Lee and Maria Friedlander Familyfoundation | | New City, NY | Local | 3 | 2024 | $45,000 |
| The B Jean Lathrop Benton Trust | | Dallas, TX | Local | 7 | 2024 | $34,887 |
| Jade Tree Foundation | | Greenville, DE | National | 7 | 2024 | $14,000 |
| Lenore Hanauer Foundation | | Seattle, WA | Local | 7 | 2024 | $11,225 |
| William Edwin Hall Foundation Inc C/O Community Foundation for S Az | | | Local | 1 | 2024 | $10,000 |
| Lowman Lyon Foundation | | Oro Valley, AZ | Local | 3 | 2024 | $6,000 |
| Ross and Patty Mc Callister Foundation | | Tucson, AZ | Local | 5 | 2024 | $5,000 |
| Ender Family Foundation | | Tucson, AZ | Local | 4 | 2024 | $4,699 |
| Robert & Arnold Hoffman Foundation | | New York, NY | National | 5 | 2024 | $3,325 |
| Lubin Foundation Inc | | Tucson, AZ | Local | 5 | 2024 | $3,000 |
| Edmac Foundation Inc | | Pittsford, NY | National | 4 | 2024 | $3,000 |
| Haugh Foundation | | Tucson, AZ | Local | 2 | 2024 | $3,000 |
| R T Vanderbilt Trust | | Norwalk, CT | Local | 2 | 2024 | $2,000 |
| Shatz Family Foundation | | Tucson, AZ | Local | 1 | 2024 | $500 |
| Craig and Christine Hughes Family Foundation | | Scottsdale, AZ | Local | 1 | 2024 | $500 |
| Kairos Foundation | | Minneapolis, MN | National | 4 | 2024 | $450 |
| Shamrock Trust Dated 04 18 2016 | | Tucson, AZ | Local | 3 | 2024 | $443 |
| Eric Holby Animal Welfare Foundation | | Elburn, IL | National | 1 | 2024 | $100 |
| Frederick Gardner Cottrell Foundation | | Tucson, AZ | Local | 5 | 2023 | $2,664,500 |
| Brown Foundation Inc | | Houston, TX | Local | 4 | 2023 | $24,000 |
| The Charis Charitable Foundation Inc | | Tucson, AZ | Local | 4 | 2023 | $20,000 |
| The James Huntington Foundation C/O Mr Samuel H Ellis | | | Local | 4 | 2023 | $20,000 |
| Windibrow Foundation | | Long Lake, MN | National | 6 | 2023 | $4,250 |
| Gwydion Fund for Wild Nature | | New York, NY | Local | 2 | 2023 | $3,000 |
| The Adler Schermer Foundation | | Tucson, AZ | Local | 2 | 2023 | $1,000 |
| Margolis Foundation | | Colorado Spgs, CO | Local | 3 | 2023 | $1,000 |
| Thomas R Brown Family Foundation | | Tyler, TX | — | 1 | 2022 | $1,750,000 |
| American Association of Zoological Parks and Aquariums Inc | | Silver Spring, MD | National | 1 | 2022 | $114,609 |
| Fred Maytag Family Foundation | | San Francisco, CA | National | 2 | 2022 | $55,000 |
| The Hs Lopez Family Foundation | | Tucson, AZ | Local | 1 | 2022 | $50,000 |
| Clayton and Billie Poenisch Foundation | | Wray, CO | National | 2 | 2022 | $15,000 |
| Research Corporation | | Tucson, AZ | National | 1 | 2022 | $5,000 |
| The Stonewall Foundation | | | — | 3 | 2021 | $590,000 |
| National Forest Foundation | | Missoula, MT | National | 4 | 2021 | $285,849 |
| Rossetter Foundation | | Chicago, IL | National | 4 | 2021 | $58,000 |
| John M Simpson Foundation | | Chicago, IL | Local | 1 | 2021 | $10,000 |
| Union Pacific Foundation | | Omaha, NE | National | 1 | 2021 | $10,000 |
| United Way of Tucson and Southern Arizona Inc | | Tucson, AZ | Local | 1 | 2021 | $5,100 |
| The Donnelley Foundation | | Chicago, IL | Local | 2 | 2021 | $3,500 |
| William and Mary Singer Family Foundation | | Canada | Local | 2 | 2021 | $650 |
| The Wallace Research Foundation | | Cedar Rapids, IA | National | 1 | 2020 | $80,000 |
| Nina Mason Pulliam Charitable Tr | | Indianapolis, IN | Local | 1 | 2020 | $50,000 |
| University of Arizona Foundation | | Tucson, AZ | Local | 2 | 2020 | $49,082 |
| Kautz Family Foundation | | Tucson, AZ | National | 3 | 2020 | $27,500 |
| Mcintosh Family Foundation | | Phoenix, AZ | Local | 1 | 2020 | $10,000 |
| Brillo-Sonnino Family Foundation | | Miami Beach, FL | National | 1 | 2020 | $3,000 |
| Lohse Foundation | | Tucson, AZ | Local | 1 | 2020 | $2,500 |
| Pauline Preserve Inc an Oregon Non-Profit Corporation | | Mcminnville, OR | — | 1 | 2020 | $1,000 |
| Roth Family Foundation | | Tucson, AZ | Local | 3 | 2020 | $525 |
| Donald W Collier Charitable Tr II 122800 | | Chicago, IL | National | 3 | 2020 | $278 |
| The Shamrock Foundation | | | — | 2 | 2020 | $250 |
| Kirchgessner Vision Foundation | | Sherman Oaks, CA | Local | 1 | 2020 | $200 |
| David D Cone Foundation Inc | | | — | 1 | 2020 | $100 |
| George Mason Green & Lois C Green Foundation | | Tucson, AZ | Local | 1 | 2019 | $13,500 |
| Jack and Susan Pierson Charitable Dated 12292011 Tr | | Mission Hills, KS | Local | 2 | 2019 | $3,500 |
| D V & Ida Mceachern Charitable Fdn | | Milwaukee, WI | Local | 1 | 2019 | $500 |
| Campbell Family Foundation | | Wilmette, IL | National | 1 | 2019 | $250 |
| Norfolk Charitable Trust | | Marion, MA | Local | 1 | 2018 | $50,000 |
| The@Elizabeth Wakeman Henderson Charitable Foundation | | New York, NY | Local | 1 | 2018 | $9,000 |
| Richard Grand Foundation | | | — | 1 | 2018 | $5,000 |
| Jasam Foundation Fund B | | Tucson, AZ | Local | 1 | 2018 | $5,000 |
| Payson Family Foundation Co Incorp Services Inc | | | — | 1 | 2018 | $200 |
| The Daniels Family Foundation | | Wilmington, DE | National | 1 | 2018 | $100 |
| Patagoniaorg | | | National | 1 | 2017 | $2,650 |
| Awh Foundation | | Portland, OR | — | 1 | 2017 | $150 |