| MICHAEL J FOX FOUNDATION FOR PARKINSONS RESEARCH | $708,298,921 | H48 | published | science: research education | New York, NY | 2025 |
| LIEBER INSTITUTE INC | $33,169,343 | H48 | published | science: research education | Baltimore, MD | 2024 |
| THE INTERNATIONAL ACADEMY OF HOPE | $32,644,175 | H48 | published | | New York, NY | 2024 |
| GLOBAL COALITION FOR ADAPTIVE RESEARCH INC | $32,444,163 | H48 | published | science: research education | Larkspur, CA | 2025 |
| TISCH MULTIPLE SCLEROSIS RESEARCH CENTER OF NEW YORK INC | $9,511,945 | H48 | published | science: research education | New York, NY | 2025 |
| THE STANLEY MEDICAL RESEARCH INSTITUTE | $6,297,768 | H48 | published | science: research education | Rockville, MD | 2024 |
| PEDIATRIC BRAIN TUMOR FOUNDATION OF THE UNITED STATES INC | $5,848,026 | H48 | published | survivor: cancer | Winston Salem, NC | 2024 |
| FOUNDATION OF THE AMERICAN SOCIETY OF NEURORADIOLOGY | $4,715,704 | H48 | published | science: research education | Oak Brook, IL | 2024 |
| DYSTONIA MEDICAL RESEARCH FOUNDATION | $3,654,855 | H48 | published | science: research education | Chicago, IL | 2025 |
| THE FOUNDATION OF HOPE FOR RESEARCH & TREATMENT OF MENTAL ILLNESS | $3,309,690 | H48 | inferred 0.50 | survivor: sexual | Raleigh, NC | 2024 |
| PACIFIC PEDIATRIC NEURO-ONCOLOGY CONSORTIUM FOUNDATI | $2,405,132 | H48 | published | | San Rafael, CA | 2025 |
| FOUNDATION ASSOCIATES LLC | $2,131,421 | H48 | inferred 0.60 | | New York, NY | 2019 |
| SOUTH ALABAMA MEDICAL SCIENCE FOUNDATION | $2,036,930 | H48 | published | science: research education | Mobile, AL | 2024 |
| NEURTEX BRAIN RESEARCH INSTITUTE INC | $981,055 | H48 | published | | Plano, TX | 2024 |
| CHILDRENS BRAIN DISEASE FOUNDATION | $805,932 | H48 | published | | San Francisco, CA | 2025 |
| KARLSSON FOUNDATION FOR PSYCHOANALYSIS | $721,106 | H48 | published | | Campbell, CA | 2024 |
| INTERNATIONAL BRAIN RESEARCH FOUNDATION INC | $689,841 | H48 | published | men: issues | Boca Raton, FL | 2024 |
| BRAIN INFLAMMATION COLLABORATIVE INC | $639,120 | H48 | published | | Delafield, WI | 2024 |
| PEARL PSYCHEDELIC INSTITUTE | $536,305 | H48 | published | | Waynesville, NC | 2025 |
| APBD RESEARCH FOUNDATION | $531,246 | H48 | published | science: research education | New York, NY | 2025 |
| WINTER CONFERENCE OF BRAIN RESEARCH | $516,145 | H48 | published | | Brentwood, TN | 2024 |
| NATHANIEL WHARTON FUND FOR RESEARCH IN BRAIN BODY AND BEHAVIOR INC | $447,360 | H48 | published | science: research education | New York, NY | 2024 |
| JUSTIN PARKER NEUROLOGICAL INSTITUTE | $444,788 | H48 | published | | Boulder, CO | 2024 |
| NATIONAL ORGANIZATION OF DISORDERS OF THE CORPUS CALLOSUM | $433,762 | H48 | published | | Yorba Linda, CA | 2024 |
| DR MARNIE ROSE FOUNDATION INC | $386,022 | H48 | published | | Bellaire, TX | 2024 |
| IBREA FOUNDATION | $255,669 | H48 | published | | New York, NY | 2024 |
| RARE HOPE INC | $235,751 | H48 | published | | Washington, DC | 2024 |
| SHAY EMMA HAMMER RESEARCH FOUNDATION | $221,656 | H48 | published | | Tucson, AZ | 2024 |
| HEAD INJURY CENTER FOR PREVENTION AND COMMUNITY RE-ENTRY INC | $199,632 | H48 | published | | Maricopa, AZ | 2025 |
| BOUNCE OUT THE STIGMA PROJECT INC | $197,279 | H48 | published | | Allendale, NJ | 2024 |
| KIMERA SOCIETY INC | $195,567 | H48 | published | science: research education | Miramar, FL | 2024 |
| MIND YOUR BRAIN | $182,794 | H48 | published | | Paoli, PA | 2025 |
| MEHTA METAPHYSICAL CENTER INC | $182,608 | H48 | published | | Winter Park, FL | 2024 |
| BRAIN CENTER OF GREEN BAY INC | $182,342 | H48 | published | | Green Bay, WI | 2025 |
| INTERNATIONAL NEUROETHICS SOCIETY | $166,640 | H48 | published | science: research education | Washington, DC | 2024 |
| BRAIN HEALTH INITIATIVE INC | $134,997 | H48 | published | | Dover, NH | 2025 |
| SOUTHERN HEADACHE SOCIETY | $123,742 | H48 | published | | Lakeway, TX | 2025 |
| SYNAPTICS FOUNDATION | $121,419 | H48 | published | | Bakersfield, CA | 2025 |
| BUFFALO INITIATIVE INC | $113,733 | H48 | published | | Dover, DE | 2025 |
| JUSTIN G MODEL MEMORIAL FOUNDATION | $97,487 | H48 | published | | Springfield, NJ | 2025 |
| JOSEPHINES GARDEN INC | $78,477 | H48 | published | | Saddle River, NJ | 2025 |
| MIRACLES IN PROGRESS NFP | $72,750 | H48 | published | | Westchester, IL | 2025 |
| SNYDER-ROBINSON FOUNDATION | $68,211 | H48 | published | science: research education | Mclean, VA | 2024 |
| PIERCE FAMILY FRAGILE X FOUNDATION INC | $56,136 | H48 | published | | Winchester, MA | 2025 |
| ELIZABETH M FEHRENBACH TR UW FBO GEORGE B FEHRENBACH | $55,935 | H48 | published | science: research education | Tampa, FL | 2025 |
| NEUROMARKERS PLLC | $53,435 | H48 | published | | Houston, TX | 2025 |
| JESS FIN FOUNDATION | $42,592 | H48 | published | | Zionsville, PA | 2025 |
| NEURONETWORKS FUND INC | $41,247 | H48 | published | | New Canaan, CT | 2021 |
| IRENE & ERIC SIMON BRAIN RESEARCH FOUNDATION INC | $36,503 | H48 | published | | Sparta, NJ | 2024 |
| FAMILIES FOR HOPE INC | $36,078 | H48 | published | | Indianapolis, IN | 2024 |
| GRAYSON SAVES FOUNDATION INC | $35,464 | H48 | published | | Hockessin, DE | 2013 |
| INSTITUTE OF CHRONIC ILLNESSES INC | $32,633 | H48 | published | | Silver Spring, MD | 2024 |
| NCI CLINICAL RESEARCH FOUNDATION INC | $21,082 | H48 | published | | Mount Arlington, NJ | 2024 |
| ENCEPHALITIS411 | $20,493 | H48 | published | | Plano, TX | 2025 |
| CHIARI PROJECT | $19,807 | H48 | published | | Santa Monica, CA | 2024 |
| DAN LEWIS FOUNDATION FOR BRAIN REGENERATION RESEARCH | $17,894 | H48 | published | women: issues | Denver, CO | 2023 |
| LULU FUND INC | $14,687 | H48 | published | | Naples, FL | 2025 |
| SEEKING TECHNIQUES ADVANCING RESEARCH IN SHUNTS | $12,733 | H48 | inferred 0.55 | | Livonia, MI | 2012 |
| CORY HEIDARAN CHARITABLE FOUNDATION | $11,175 | H48 | published | | Potomac, MD | 2025 |
| CAROLINA HEADACHE FOUNDATION | $9,334 | H48 | published | | Durham, NC | 2023 |
| DEMENTIA STUDIES FOUNDATION INC | $7,979 | H48 | published | | Dallas, TX | 2023 |
| INTERNATIONAL RESEARCH CONSORTIUM FOR THE CORPUS CALLOSUM AND | $4,995 | H48 | published | science: research education | Sacramento, CA | 2019 |
| KATHI GOERTZEN FOUNDATION | $4,241 | H48 | inferred 0.85 | | Seattle, WA | 2016 |
| LANEY JAYMES FOUNDATION | $1,676 | H48 | published | | Annapolis, MD | 2025 |
| BRODERICK BRAIN FOUNDATION | $1,646 | H48 | published | | Bronx, NY | 2024 |
| MG CHARITIES | $1,008 | H48 | published | science: research education | Woodbury, MN | 2022 |
| CERECARE INC | $450 | H48 | published | | Redondo Beach, CA | 2024 |
| GEORGETOWN NEUROSCIENCES FOUNDATION | $10 | H48 | published | | Georgetown, TX | 2023 |
| H E SLAVICK NEUROLOGICAL FOUNDATION | $4 | H48 | inferred 0.80 | science: research education | Chicago, IL | 2016 |
| STROKE PREVENTION & RESEARCH | $0 | H48 | inferred 0.75 | science: research education | Buffalo, NY | 2018 |
| BRAIN INJURY FOUNDATION | $0 | H48 | published | | Bala Cynwyd, PA | 2025 |
| CENTER FOR NEUROLOGIC STUDIES OF AMERICA INC | $0 | H48 | published | | Boca Raton, FL | 2025 |
| AJ ANDERSON FOUNDATION INC | $0 | H48 | published | | Palm Harbor, FL | 2025 |
| JILL BOLTE TAYLOR BRAINS INC | $0 | H48 | published | | Bloomington, IN | 2025 |
| KIOS INSTITUTE INC | $0 | H48 | published | | Durham, NC | 2025 |
| BRYCES BRIDGE OF HOPE | $0 | H48 | published | | Thorofare, NJ | 2023 |
| CURE DEVELOPMENTAL BRAIN DEFECTS NOW FOUNDATION | $0 | H48 | published | | New York, NY | 2024 |
| BRAIN SAFE | $0 | H48 | published | | Washington, DC | 2025 |
| BRAIN HEALTH AND RESEARCH FOUNDATION | $0 | H48 | published | | Costa Mesa, CA | 2024 |
| INTERNATIONAL UPPER CERVICAL PATIENT ADVOCATES ASSOCIATION | - | H48 | published | | New Castle, PA | |
| BWH NEUROLOGY RESEARCH AND EDUCATION FOUNDATION INC | - | H48 | inferred 0.70 | | Charlestown, MA | |
| MEMORY DISORDERS RESEARCH SOCIETY | - | H48 | inferred 0.45 | | Boston, MA | |
| NEUROOGICAL SURGERY RESEARCH FOUNDATION INC | - | H48 | inferred 0.70 | | Rye, NY | |
| BRAIN ANEURYSM RESEARCH TR CORPORATION | - | H48 | inferred 0.85 | | Marshfield, MA | |
| INTERMOUNTAIN STROKE RESEARCH FOUNDATION | - | H48 | inferred 0.50 | | Cottonwd Hts, UT | |
| CATERINA MARCUS FOUNDATION INC | - | H48 | published | | Princeton, NJ | |
| SARAHS PLACE INC | - | H48 | published | | Cambridge, MA | |
| PETER A BEDNARSKI FUND FOR BRAIN | - | H48 | inferred 0.50 | | Roseland, NJ | |
| HUGH AND CAROLYN SHELTON MILITARY NEUROTRAUMA FOUNDATION | - | H48 | inferred 0.50 | | Gaithersburg, MD | |
| ASSOCIATION FOR THE ADVANCEMENT OF PHILOSOPHY AND PSYCHIATRY | - | H48 | published | | Dallas, TX | |
| INTERNATIONAL BRAIN RESEARCH | - | H48 | inferred 0.50 | | Boston, MA | |
| SAVE A BRAIN FOUNDATION | - | H48 | inferred 0.50 | | Beverly Hills, CA | |
| MOSES MAX MINDKNIT RESEARCH CENTER | - | H48 | published | | Columbia, MD | |
| HYDROCEPHALUS RESEARCH FUND | - | H48 | published | | Irving, TX | |
| OPTIC NERVE RESEARCH FOUNDATION INC | - | H48 | inferred 0.60 | | New York, NY | |
| NATIONAL BRAIN INJURY RESEARCH | - | H48 | inferred 0.70 | | Huntersville, NC | |
| FOUNDATION FOR HEAD INJURY RESEARCH | - | H48 | inferred 0.80 | | Rancho Bernardo, CA | |
| PARKINSONS PROJECT FOUNDATION | - | H48 | published | | Mckinney, TX | |
| BRAIN WARRIORS FOUNDATION OF AMERICA | - | H48 | published | | Deland, FL | |
| SIYA SMILES FOUNDATION | - | H48 | published | | Westfield, NJ | |