The Linda and Mike Mussallem Foundation concentrates its giving on biomedical innovation and translational medical research, with a strong emphasis on accelerating discovery into practical health solutions. It makes very large, targeted gifts to elite research institutions and also channels significant support through a community foundation for local/regional philanthropic initiatives. Repeat support to a small set of recipients suggests a preference for deep, mission-focused investments rather than broad, diffuse grantmaking.
The Linda and Mike Mussallem Foundation’s most distinctive recent gift is a $20,000,000 grant to Stanford University for the Center for Biodesign, signaling a strong commitment to turning biomedical research into practical health applications. That same pattern appears across its recent giving: large, targeted support for institutions working at the intersection of science, translation, and patient impact. In 2025, it also gave $1,200,000 to Massachusetts General Hospital for the Mussallem Transformative Scholars in ALS Research Award Fund and Translations of Human Neuron Screen Hits from the Lab, linking disease-focused research with the path from screening to candidate development. Another major thread runs through Orange County Community Foundation, where the foundation directed multimillion-dollar support to the George and Bob Fund and related donor-advised structures. The recipient mix points to a funder that favors concentrated grants, repeat relationships, and specific research or philanthropic vehicles rather than broad, diffuse giving.
Biomedical innovation is central to the foundation’s grantmaking. It gave $20,000,000 to Stanford University for the Center for Biodesign, a grant tied to translational work rather than basic research alone. In ALS research, the foundation supported Massachusetts General Hospital with $1,200,000 for the Mussallem Transformative Scholars in ALS Research Award Fund and Translations of Human Neuron Screen Hits from the Lab, showing interest in both investigator support and screening-to-development pipelines. Its regional philanthropy also includes support through Orange County Community Foundation, which received $1,476,043 for the George and Bob fund and $1,475,175 for the George and Bob Fund. Those grants suggest an ongoing role in funding locally organized charitable capital alongside research awards.
The foundation’s typical grant size is large: the 25th percentile is $1,406,381, the median is $1,475,609, and the 75th percentile is $2,125,714. Recent giving also includes a much larger outlier at $20,000,000, indicating that some awards are far above the core pattern. Recipients repeat across years, especially Orange County Community Foundation and Massachusetts General Hospital, which points to sustained relationships rather than one-time support. It also funds individuals, and its recent awards are structured as targeted institutional grants and named funds rather than program-related investments.
$21.2M
$81.8M
$12.5M
$22.2M
Most grants fall between $1.4M and $2.1M, with a median of $1.5M.
25th Percentile
$1.4M
Median
$1.5M
75th Percentile
$2.1M
About 0% of grants go to recipients in CA.
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Highly concentrated: very few but very large grants, recurring support to select institutional partners (multi-million-dollar gifts and repeat grants), blending direct institutional funding for research with multi-purpose community foundation funding.
Notable grantees: Stanford University (Center for Biodesign), Massachusetts General Hospital (Mussallem Transformative Scholars in ALS Research / translational neuron screening), Orange County Community Foundation (George and Bob fund)
Grantmaking is regional, but the recipient map is concentrated in California and Massachusetts. California is the top state by grant count, with grants to Stanford in Stanford and Orange County Community Foundation in Irvine. Massachusetts appears through Massachusetts General Hospital in Boston. All recent grants shown are to U.S. recipients, and none go to Delaware, the foundation’s headquarters state. The pattern is geographically focused but not tied to headquarters.
Its recent grants center on biomedical innovation, translational research, ALS research, and regional philanthropic funds. Examples include a $20,000,000 grant to Stanford University for the Center for Biodesign and $1,200,000 to Massachusetts General Hospital for ALS-related scholar and screening programs.
Yes. It gave $1,200,000 to Massachusetts General Hospital for the Mussallem Transformative Scholars in ALS Research Award Fund and Translations of Human Neuron Screen Hits from the Lab, which links ALS scholarship with screening and development work.
Its grant sizes are large and fairly clustered: the 25th percentile is $1,406,381, the median is $1,475,609, and the 75th percentile is $2,125,714. The recent data also includes a $20,000,000 grant that sits well above that range.
Yes. Orange County Community Foundation appears multiple times across 2023 and 2024, and Massachusetts General Hospital appears in both 2024 and 2025. That pattern suggests recurring relationships with a small set of grantees.
2025
Source: IRS Form 990-PF, fiscal year 2025.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| STANFORD UNIVERSITY | STANFORD, CA | $20,000,000 | 2025 | Center for Biodesign |
| MASSACHUSETTS GENERAL HOSPITAL | BOSTON, MA | $1,200,000 | 2025 | Mussallem Transformative Scholars in ALS Research Award Fund and Translations of Human Neuron Screen Hits from the Lab |
| ORANGE COUNTY COMMUNITY FOUNDATION | IRVINE, CA | $1,476,043 | 2024 | George and Bob fund (see general explanation) |
| ORANGE COUNTY COMMUNITY FOUNDATION | IRVINE, CA | $1,475,175 | 2024 | George and Bob Fund |
| MASSACHUSETTS GENERAL HOSPITAL | BOSTON, MA | $1,200,000 | 2024 | Mussallem Transformative Scholars in ALS Research award fund |
| ORANGE COUNTY COMMUNITY FOUNDATION | IRVINE, CA | $4,074,727 | 2023 | donor adviser fund - George and Bob Fund |
STANFORD UNIVERSITY
$20,000,000Center for Biodesign
MASSACHUSETTS GENERAL HOSPITAL
$1,200,000Mussallem Transformative Scholars in ALS Research Award Fund and Translations of Human Neuron Screen Hits from the Lab
ORANGE COUNTY COMMUNITY FOUNDATION
$1,476,043George and Bob fund (see general explanation)
MASSACHUSETTS GENERAL HOSPITAL
$1,200,000Mussallem Transformative Scholars in ALS Research award fund
donor adviser fund - George and Bob Fund