The C Stone Foundation concentrates its giving into a small number of large, unrestricted grants that support medical research into neurodevelopmental disorders and local community organizations. Recent awards indicate a strong interest in SCN2A-related family support and autism longitudinal research, alongside substantial general‑purpose support for community-serving entities like United Ways or regional foundations.
Highly concentrated giving: very few, large grants that are often unrestricted/general purpose; mixture of targeted medical research/family-support groups and broad community organizations rather than many small awards.
C Stone Foundation c/o Catherine S Campbell’s largest recent grant, $984,390 to The Families SCN2A Foundation, points to a clear commitment to rare-disease family support and neurodevelopmental research. The foundation also backed a $200,000 general-purpose grant to Dr Cathy Lord Longitudinal Study of Autism and a $30,000 award to UCLA Center for Austism Research and Treatment, showing sustained attention to autism-related clinical and research work. Alongside those research awards, it has made sizable unrestricted gifts to community organizations, including $500,000 to United Way of Lewis & Clark Area and $300,000 to MCC Foundation Inc. The mix suggests a funder that uses flexible support for both scientific inquiry and place-based community institutions rather than tying most giving to tightly defined projects. Recent grants also include support for Montana-centered nonprofits and regional organizations in other states, but the pattern is not confined to one type of recipient. Across the recent grant list, general purpose funding is the dominant grant form, and the dollar amounts range from modest five-figure gifts to very large seven-figure commitments.
Medical research and family support are the foundation’s clearest programmatic themes. In 2025 it gave $984,390 to The Families SCN2A Foundation for general purpose support, indicating sustained interest in SCN2A-related advocacy and family services. Autism research is another recurring area: it awarded $200,000 to Dr Cathy Lord Longitudinal Study of Autism and $30,000 to UCLA Center for Austism Research and Treatment, both on a general-purpose basis. The portfolio also reaches community and civic institutions. It gave $500,000 to United Way of Lewis & Clark Area and $150,000 to Good Samaritan Ministries, both in 2025, reflecting support for broad local service capacity. In Montana, the foundation backed Singing Waters Montana with $100,000 in 2025 after prior grants of $60,000 in 2023 and $30,000 in 2024, showing repeated support for the same organization.
Typical grants cluster around the middle range: p25 is $13,750, median is $30,000, and p75 is $52,500. The recent list shows a small number of outsized awards above that band, including one seven-figure grant, while many others sit in the $10,000 to $50,000 range. The foundation’s giving is mostly general purpose rather than project-specific, which suggests flexibility in how recipients use the money. Several grantees appear in multiple years, including Singing Waters Montana, The Montana Innocence Project, Rocky Mountain College, Helena Symphony, Exploration Works, and Intermountain Children’s Home, so the pattern includes repeat support rather than one-time awards only.
$2.2M
$1.6M
$2M
$2.3M
Most grants fall between $14K and $53K, with a median of $30K.
25th Percentile
$14K
Median
$30K
75th Percentile
$53K
About 4% of grants go to recipients in MT.
Sign up for a free Kindora account to access AI-generated insights into this funder's giving patterns, decision-makers, and fit signals.
Get Started FreeFree Kindora accounts unlock side-by-side comparisons with foundations that share this funder's focus areas and giving profile.
Get Started FreeSign up free to see how well your nonprofit fits this funder, get an AI-generated pitch, and unlock similar foundations.
Notable grantees: The Families SCN2A Foundation, Dr Cathy Lord Longitudinal Study of Autism, United Way of Lewis & Clark Area, MCC Foundation Inc
Grants are concentrated in the United States, with all recent awards going to U.S. recipients. Montana receives the most grants by count, and Helena appears repeatedly as a recipient city, along with Billings and Missoula. Outside Montana, the list includes Gettysburg, Los Angeles, Richmond, Greenbank, Mineapolis, and San Antonio. Texas is the headquarters state, but only 4% of grants go there, so the giving footprint is much broader than the foundation’s location.
The recent grants point to three main patterns: SCN2A-related family support, autism research, and unrestricted support for community organizations. Examples include a large award to The Families SCN2A Foundation, grants to autism research programs, and major general-purpose support for United Way of Lewis & Clark Area and MCC Foundation Inc.
No. Montana is the top state by grant count, but the recent grants also reach Pennsylvania, California, Virginia, Washington, Minnesota, and Texas. All of the listed grants are to U.S. recipients, with a strong concentration in Montana cities such as Helena, Billings, and Missoula.
The distribution centers on mid-size awards: the 25th percentile is $13,750, the median is $30,000, and the 75th percentile is $52,500. The list also includes a much larger award of $984,390, so the foundation makes both standard-sized grants and occasional very large commitments.
Yes. Several recipients appear in multiple years, including Singing Waters Montana, The Montana Innocence Project, Rocky Mountain College, Helena Symphony, Exploration Works, and Intermountain Children’s Home. That pattern shows repeat support rather than strictly one-time grants.
The recent grants are overwhelmingly listed as general purpose. That includes the largest awards as well as many of the mid-size grants, indicating a preference for flexible funding that recipients can direct toward their own needs rather than a single restricted project.
2025
Source: IRS Form 990-PF, fiscal year 2025.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| Rocky Mountain College | Billings, MT | $50,000 | 2026 | General Purpose |
| Central Montana Medical Facilities Inc (dba Central Montana Medical Cent | Lewistown, MT | $50,000 | 2026 | General Purpose |
| ExplorationWorks Inc | Helena, MT | $50,000 | 2026 | General Purpose |
| The Myrna Loy (Myrna Loy Center) | Helena, MT | $30,000 | 2026 | General Purpose |
| Montana History Foundation Inc | Helena, MT | $10,000 | 2026 | General Purpose |
| Kakenya's Dream | Arlington, VA | $5,000 | 2026 | General Purpose |
| Max S Baucus Institute | Bozeman, MT | $5,000 | 2026 | General Purpose |
| Gods Love Inc (God's Love Homeless Shelter) | Helena, MT | $5,000 | 2026 | General Purpose |
| The Families SCN2A Foundation | Gettysburg, PA | $984,390 | 2025 | General Purpose |
| United Way of Lewis & Clark Area | Helena, MT | $500,000 | 2025 | General Purpose |
| MCC Foundation Inc | San Antonio, TX | $300,000 | 2025 | General Purpose |
| Dr Cathy Lord Longitudinal Study of Autism | Los Angeles, CA | $200,000 | 2025 | General Purpose |
| Good Samaritan Ministries | Richmond, VA | $150,000 | 2025 | General Purpose |
| Singing Waters Montana | Billings, MT | $100,000 | 2025 | General Purpose |
| Plymouth Congregational Church | Mineapolis, MN | $10,000 | 2025 | General Purpose |
| Rocky Mountain College | Billings, MT | $50,000 | 2024 | General Purpose |
| The Montana Innocence Project | Missoula, MT | $50,000 | 2024 | General Purpose |
| Central Montana Medical Center FND | LewisTown, MT | $50,000 | 2024 | General Purpose |
| Whidbey Camamo Land Trust | Greenbank, WA | $50,000 | 2024 | General Purpose |
| Singing Waters Montana | Billings, MT | $30,000 | 2024 | General Purpose |
| The Myrna Loy Center | Helena, MT | $10,000 | 2024 | General Purpose |
| Intermountain Children's Home | Helena, MT | $10,000 | 2024 | General Purpose |
| Helena Symphony | Helena, MT | $10,000 | 2024 | General Purpose |
| Exploration Works | Helena, MT | $10,000 | 2024 | General Purpose |
| Our Place | Helena, MT | $5,000 | 2024 | General Purpose |
| Singing Waters Montana | Billings, MT | $60,000 | 2023 | General Purpose |
| The Montana Innocence Project | Missoula, MT | $50,000 | 2023 | General Purpose |
| Rocky Mountain College | Billings, MT | $50,000 | 2023 | General Purpose |
| UCLA Center for Austism Research and Treatment | Los Angeles, CA | $30,000 | 2023 | General Purpose |
| Helena Symphony | Helena, MT | $20,000 | 2023 | General Purpose |
| Exploration Works | Helena, MT | $20,000 | 2023 | General Purpose |
| Intermountain Children's Home | Helena, MT | $20,000 | 2023 | General Purpose |
| The Myrna Loy Center | Helena, MT | $20,000 | 2023 | General Purpose |
| Montana Land Reliance | Helena, MT | $20,000 | 2023 | General Purpose |
| Montana History Foundation | Helena, MT | $15,000 | 2023 | General Purpose |
| God's Love Inc | Hermosa Beach, CA | $10,000 | 2023 | General Purpose |
Rocky Mountain College
$50,000General Purpose
Central Montana Medical Facilities Inc (dba Central Montana Medical Cent
$50,000General Purpose
ExplorationWorks Inc
$50,000General Purpose
The Myrna Loy (Myrna Loy Center)
$30,000General Purpose
General Purpose
Max S Baucus Institute
$5,000General Purpose
Gods Love Inc (God's Love Homeless Shelter)
$5,000General Purpose
The Families SCN2A Foundation
$984,390General Purpose
United Way of Lewis & Clark Area
$500,000General Purpose
MCC Foundation Inc
$300,000General Purpose
Dr Cathy Lord Longitudinal Study of Autism
$200,000General Purpose
Good Samaritan Ministries
$150,000General Purpose
Singing Waters Montana
$100,000General Purpose
Plymouth Congregational Church
$10,000General Purpose
Rocky Mountain College
$50,000General Purpose
The Montana Innocence Project
$50,000General Purpose
Central Montana Medical Center FND
$50,000General Purpose
Whidbey Camamo Land Trust
$50,000General Purpose
Singing Waters Montana
$30,000General Purpose
The Myrna Loy Center
$10,000General Purpose
Intermountain Children's Home
$10,000General Purpose
Helena Symphony
$10,000General Purpose
Exploration Works
$10,000General Purpose
Our Place
$5,000General Purpose
Singing Waters Montana
$60,000General Purpose
The Montana Innocence Project
$50,000General Purpose
Rocky Mountain College
$50,000General Purpose
UCLA Center for Austism Research and Treatment
$30,000General Purpose
Helena Symphony
$20,000General Purpose
Exploration Works
$20,000General Purpose
Intermountain Children's Home
$20,000General Purpose
The Myrna Loy Center
$20,000General Purpose
God's Love Inc
$10,000General Purpose