The Si Robin Foundation concentrates its philanthropic support on museum-based preservation of aviation and military history, with all recorded giving directed to the Pearl Harbor Aviation Museum. Their funding appears focused on sustaining museum operations, collections, and public history programming tied to World War II aviation heritage. The foundation gives from California but supports a Hawaii-based institution, indicating an interest in national or historically significant museum preservation rather than strictly local causes.
Highly concentrated giving: all recorded dollars go to a single grantee across multiple grants, indicating large, targeted support for one museum rather than distributed or exploratory funding.
Si Robin Foundation’s largest recorded grant is a $1,000,000 award to Pearl Harbor Aviation Museum in 2023, and that institution appears again in 2024 with another $781,557 plus a separate $14,000 grant. That repeated support points to a funder centered on aviation and World War II military history museums, with particular attention to preservation and museum operations. Across the recent-grants list, the foundation also backs other aviation heritage organizations, including the San Diego Air and Space Museum, the Museum of Flying, the Aerospace Museum of California, and the Museum of Flight Foundation. The pattern is not limited to one institution or one city, but the work consistently stays close to aviation history, public history, and museum stewardship. Several grants are labeled general operating support, while others are directed to museums themselves, suggesting the foundation is willing to underwrite both day-to-day organizational needs and collection-centered work. The foundation also makes a smaller number of grants to health-related organizations and medical transport, but those are secondary to its museum giving. With annual grants of $2,890,508 and total assets of $5,335,763 on the latest 990, Si Robin Foundation operates at a meaningful but focused scale.
Museum stewardship is the clearest theme in Si Robin Foundation’s giving. In 2024, it gave $100,000 to San Diego Air and Space Museum for museum support, and $50,000 to Museum of Flying in Santa Monica for museum purposes. It also made $52,160 grants to both the Museum of Flight Foundation and the Smithsonian Institution, each coded as museum support. Aviation heritage appears as a related thread. The foundation gave $60,000 to Reno Air Racing Association Inc for general operating support and $19,465 to Planes of Fame Air Museum in Chino for museum support. It also supported the Vintage Auto Racing Association with a $20,000 museum grant. The portfolio includes limited health-related giving as well. Si Robin Foundation gave $46,468 to City of Hope for general operating support and $40,000 to Angel Flight West for medical transportation, showing that its grantmaking extends beyond museums even though that remains the core theme.
Si Robin Foundation’s typical grants cluster tightly around the middle of the $20,000 to $52,160 range, with a median grant of $46,468, a 25th percentile of $20,000, and a 75th percentile of $52,160. The distribution suggests a mix of mid-sized general support grants and a few much larger awards. The foundation’s recent record also shows repeat support to the same recipients across years, including Pearl Harbor Aviation Museum, San Diego Air and Space Museum, Aerospace Museum of California, and Angel Flight West. It does not fund individuals and does not make program-related investments. The available records point to grantmaking by a private foundation rather than an application-driven public grant program.
$2.5M
$1.8M
$2M
$2.5M
Most grants fall between $20K and $52K, with a median of $46K.
25th Percentile
$20K
Median
$46K
75th Percentile
$52K
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Notable grantees: Pearl Harbor Aviation Museum
Si Robin Foundation gives most often in California, which accounts for 59% of grants. Recent California recipients include San Diego, Santa Monica, McClellan, Van Nuys, Los Angeles, Mission Hills, Chino Hills, Chino, El Segundo, Camarillo, and Palm Springs. The next-most visible cluster is Hawaii, anchored by Honolulu through Pearl Harbor Aviation Museum. Outside the foundation’s core state focus, grants also reached Grand Forks, North Dakota; Oshkosh, Wisconsin; Reno, Nevada; Seattle, Washington; Washington, DC; Dallas, Texas; Denver, Colorado; and Memphis, Tennessee. All recorded grants in the dataset went to US recipients.
Its giving centers on aviation and World War II military history museums. The recent-grants list shows repeated support for museum operations, museum support, and collection-related work, especially around Pearl Harbor Aviation Museum and other aviation heritage institutions.
The foundation’s grant-size profile is centered in the mid-five-figure range: p25 is $20,000, median is $46,468, and p75 is $52,160. Recent grants also include larger awards, including $1,000,000 and $781,557 to Pearl Harbor Aviation Museum.
Yes. Pearl Harbor Aviation Museum appears in 2023 and 2024, San Diego Air and Space Museum appears in both 2023 and 2024, Aerospace Museum of California appears in both years, and Angel Flight West appears in both years. That pattern suggests recurring support rather than one-off giving only.
California is the top state by grant count, accounting for 59% of grants. Recent California recipients span multiple cities, including San Diego, Santa Monica, McClellan, Van Nuys, Los Angeles, Mission Hills, Chino, El Segundo, Camarillo, and Palm Springs.
Yes, but in a smaller part of the portfolio. The recent-grants list includes $46,468 to City of Hope for general operating support, $46,468 to St Jude Children's Research Hospita for medical research, and $40,000 to Angel Flight West for medical transportation.
2026
Source: IRS Form 990-PF, fiscal year 2026.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| PEARL HARBOR AVIATION MUSEUM | HONOLULU, HI | $688,488 | 2026 | MUSEUM |
| PALM SPRINGS AIR MUSEUM INC | PALM SPRINGS, CA | $255,600 | 2026 | MUSEUM |
| PEARL HARBOR AVIATION MUSEUM | HONOLULU, HI | $164,240 | 2026 | MUSEUM |
| San Diego Air and Space Museum | San Diego, CA | $150,000 | 2026 | MUSEUM |
| UND AEROSPACE FOUNDATION | GRAND FORKS, ND | $142,000 | 2026 | GENERAL OPERATING SUPPORT |
| PEARL HARBOR AVIATION MUSEUM | HONOLULU, HI | $117,382 | 2026 | MUSEUM |
| BOB HOOVER ACADEMY | SALINAS, CA | $100,000 | 2026 | TEACHING |
| ST JUDE CHILDREN'S RESEARCH HOSPITA | MEMPHIS, TN | $92,591 | 2026 | MEDICAL RESEARCH |
| ANGEL FLIGHT WEST | Santa Monica, CA | $85,835 | 2026 | MEDICAL TRANSPORTATION |
| Museum of Flight Foundation | Seattle, WA | $74,010 | 2026 | MUSEUM |
| AERO CLUB OF SOUTHERN CA | EL SEGUNDO, CA | $73,500 | 2026 | GENERAL OPERATING SUPPORT |
| RENO AIR RACING ASSOCIATION INC | RENO, NV | $60,000 | 2026 | GENERAL OPERATING SUPPORT |
| PEARL HARBOR AVIATION MUSEUM | HONOLULU, HI | $53,436 | 2026 | MUSEUM |
| CONDOR SQUADRON OFFICERS AIRMENS | VAN NUYS, CA | $53,390 | 2026 | GENERAL OPERATING SUPPORT |
| WINGS OVER THE ROCKIES | DENVER, CO | $50,000 | 2026 | GENERAL OPERATING SUPPORT |
| PEARL HARBOR AVIATION MUSEUM | HONOLULU, HI | $46,550 | 2026 | MUSEUM |
| VINTAGE AUTO RACING ASSOCIATION | CHINO HILLS, CA | $35,000 | 2026 | MUSEUM |
| AEROSPACE MUSEUM OF CALIFORNIA | MCCLELLAN, CA | $35,000 | 2026 | MUSEUM |
| PLANES OF FAME AIR MUSEUM | CHINO, CA | $33,190 | 2026 | MUSEUM |
| CHILDREN'S HOSPITAL OF LOS ANGELES | LOS ANGELES, CA | $33,190 | 2026 | GENERAL OPERATING SUPPORT |
| AERO CLUB OF SOUTHERN CALIFORNIA | EL SEGUNDO, CA | $25,000 | 2026 | GENERAL OPERATING SUPPORT |
| Embry-Riddle Aeronautical Universit | Daytona Beach, FL | $24,893 | 2026 | EDUCATION |
| THE AOPA FOUNDATION | FREDERICK, MD | $20,000 | 2026 | CLASSES |
| CAMARILLO WINGS ASSOCIATION | CAMARILLO, CA | $20,000 | 2026 | GENERAL OPERATING SUPPORT |
| UND AEROSPACE FOUNDATION | GRAND FORKS, ND | $20,000 | 2026 | GENERAL OPERATING SUPPORT |
| SMITHSONIAN INSTITUTION | WASHINGTON, DC | $16,927 | 2026 | MUSEUM |
| AVIATION EXPLORERS INC | SYLMAR, CA | $14,000 | 2026 | EDUCATION |
| GARY SINISE FOUNDATION | FRANKLIN, TN | $10,000 | 2026 | COMMUNITY OUTREACH |
| UND AEROSPACE FOUNDATION | GRAND FORKS, ND | $857,455 | 2025 | GENERAL OPERATING SUPPORT |
| PEARL HARBOR AVIATION MUSEUM | HONOLULU, HI | $704,682 | 2025 | MUSEUM |
| PLANES OF FAME AIR MUSEUM | CHINO, CA | $355,133 | 2025 | MUSEUM |
| THE COMMEMORATIVE AIR FORCE | DALLAS, TX | $161,000 | 2025 | MUSEUM |
| San Diego Air and Space Museum | San Diego, CA | $150,000 | 2025 | MUSEUM |
| UND AEROSPACE FOUNDATION | GRAND FORKS, ND | $142,000 | 2025 | GENERAL OPERATING SUPPORT |
| COLORADO SKIES ACADEMY | ENGLEWOOD, CO | $100,000 | 2025 | EDUCATION |
| Museum of Flight Foundation | Seattle, WA | $100,000 | 2025 | MUSEUM |
| Embry-Riddle Aeronautical Universit | Daytona Beach, FL | $75,000 | 2025 | EDUCATION |
| RENO AIR RACING ASSOCIATION INC | RENO, NV | $60,000 | 2025 | GENERAL OPERATING SUPPORT |
| CHILDREN'S HOSPITAL OF LOS ANGELES | LOS ANGELES, CA | $59,434 | 2025 | GENERAL OPERATING SUPPORT |
| ST JUDE CHILDREN'S RESEARCH HOSPITA | MEMPHIS, TN | $59,434 | 2025 | MEDICAL RESEARCH |
| CEDARS-SINAI MEDICAL CENTER | LOS ANGELES, CA | $59,434 | 2025 | GENERAL OPERATING SUPPORT |
| ANGEL FLIGHT WEST | Santa Monica, CA | $51,800 | 2025 | MEDICAL TRANSPORTATION |
| WINGS OVER THE ROCKIES | DENVER, CO | $50,000 | 2025 | GENERAL OPERATING SUPPORT |
| EAA AVIATION FOUNDATION INC | OSHKOSH, WI | $46,000 | 2025 | GENERAL OPERATING SUPPORT |
| CONDOR SQUADRON OFFICERS AIRMENS | VAN NUYS, CA | $39,975 | 2025 | GENERAL OPERATING SUPPORT |
| PALM SPRINGS AIR MUSEUM INC | PALM SPRINGS, CA | $36,500 | 2025 | MUSEUM |
| SMITHSONIAN INSTITUTION | WASHINGTON, DC | $34,530 | 2025 | MUSEUM |
| PEARL HARBOR AVIATION MUSEUM | HONOLULU, HI | $33,400 | 2025 | MUSEUM |
| VINTAGE AUTO RACING ASSOCIATION | CHINO HILLS, CA | $26,000 | 2025 | MUSEUM |
| AERO CLUB OF SOUTHERN CA | EL SEGUNDO, CA | $25,982 | 2025 | GENERAL OPERATING SUPPORT |
San Diego Air and Space Museum
$150,000MUSEUM
UND AEROSPACE FOUNDATION
$142,000GENERAL OPERATING SUPPORT
MUSEUM
BOB HOOVER ACADEMY
$100,000TEACHING
AERO CLUB OF SOUTHERN CA
$73,500GENERAL OPERATING SUPPORT
RENO AIR RACING ASSOCIATION INC
$60,000GENERAL OPERATING SUPPORT
CONDOR SQUADRON OFFICERS AIRMENS
$53,390GENERAL OPERATING SUPPORT
WINGS OVER THE ROCKIES
$50,000GENERAL OPERATING SUPPORT
VINTAGE AUTO RACING ASSOCIATION
$35,000MUSEUM
AEROSPACE MUSEUM OF CALIFORNIA
$35,000MUSEUM
AERO CLUB OF SOUTHERN CALIFORNIA
$25,000GENERAL OPERATING SUPPORT
Embry-Riddle Aeronautical Universit
$24,893EDUCATION
CAMARILLO WINGS ASSOCIATION
$20,000GENERAL OPERATING SUPPORT
UND AEROSPACE FOUNDATION
$20,000GENERAL OPERATING SUPPORT
AVIATION EXPLORERS INC
$14,000EDUCATION
UND AEROSPACE FOUNDATION
$857,455GENERAL OPERATING SUPPORT
THE COMMEMORATIVE AIR FORCE
$161,000MUSEUM
San Diego Air and Space Museum
$150,000MUSEUM
UND AEROSPACE FOUNDATION
$142,000GENERAL OPERATING SUPPORT
COLORADO SKIES ACADEMY
$100,000EDUCATION
Embry-Riddle Aeronautical Universit
$75,000EDUCATION
RENO AIR RACING ASSOCIATION INC
$60,000GENERAL OPERATING SUPPORT
ST JUDE CHILDREN'S RESEARCH HOSPITA
$59,434MEDICAL RESEARCH
WINGS OVER THE ROCKIES
$50,000GENERAL OPERATING SUPPORT
CONDOR SQUADRON OFFICERS AIRMENS
$39,975GENERAL OPERATING SUPPORT
VINTAGE AUTO RACING ASSOCIATION
$26,000MUSEUM
AERO CLUB OF SOUTHERN CA
$25,982GENERAL OPERATING SUPPORT