Additional Ventures Foundation

Invitation Only

Palo Alto, California · EIN 81-4429034 · Private foundation

Grants paid (2024)$17.2M

Organizations funded68

Typical grant$220,000

Total assets$220.3M

Half of its grants to organizations were between $208,162 and $225,412.

From the return

How to apply

On its return for tax year 2024 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.

What it funds

Share of grant lines on the latest return, classified from the purpose each grant states.

Education19
Health12
STEM1
Youth Sports1

Where it gives

73% of grants went outside California.

Grants paid in tax year 2024

Recipient	Location	Purpose	Amount
The J David Gladstone Institutes	San Francisco, CA	Innovation award	$1,200,000
Renata Medical Inc	Newport Beach, CA	Transcatheter fontan shunt development	$1,100,000
Boston Children's Hospital	Boston, MA	Force fund	$934,317
Nationwide Children's Hospital Inc	Columbus, OH	Cures collaborative	$594,872
Carnegie Mellon University	Pittsburgh, PA	Cures collaborative	$493,452
Washington University in St Louis	St Louis, MO	Cures collaborative	$381,383
The Board of Trustees of the Leland Stanford Junior University	Redwood City, CA	Cures collaborative	$322,050
Emory University	Atlanta, GA	Cures collaborative	$302,993
Irccs Azienda Ospedaliero Universitaria Di Bologna	Bologna, IT	Single ventricle research fund	$295,918
The Rector & Visitors of the University of Virginia	Charlottesville, VA	Single ventricle research fund	$282,614
Imperial College of Science Technology and Medicine	London, UK	Single ventricle research fund	$264,436
Icahn School of Medicine at Mount Sinai	New York, NY	Cures collaborative	$261,404
Sanford Burnham Prebys Medical Discovery Institute	LA Jolla, CA	Catalyst to independence award	$247,933
The Board of Trustees of the Leland Stanford Junior University	Redwood City, CA	Catalyst to independence award	$241,941
The Board of Trustees of the Leland Stanford Junior University	Redwood City, CA	Cures collaborative	$233,359
Catholic University of Leuven	BE	Single ventricle research fund	$230,000
Children's Hospital Los Angeles	Los Angeles, CA	Single ventricle research fund	$227,998
Research Institute at Nationwide Children's Hospital	Columbus, OH	Single ventricle research fund	$225,412
Yale University	New Haven, CT	Single ventricle research fund	$221,347
The Hospital for Sick Children	Toronto, CA	Single ventricle research fund	$221,200
California Institute of Technology	Pasadena, CA	Single ventricle research fund	$220,000
Children's Hospital Medical Center	Cincinnati, OH	Single ventricle research fund	$220,000
Children's Hospital Medical Center	Cincinnati, OH	Single ventricle research fund	$220,000
Cornell University	Ithaca, NY	Single ventricle research fund	$220,000
Duke University	Durham, NC	Single ventricle research fund	$220,000
Emory University	Atlanta, GA	Single ventricle research fund	$220,000
Icahn School of Medicine at Mount Sinai	New York, NY	Single ventricle research fund	$220,000
Imagine Institute	Paris, FR	Single ventricle research fund	$220,000
Indiana University	Bloomington, IN	Single ventricle research fund	$220,000
Massachusetts General Hospital	Boston, MA	Single ventricle research fund	$220,000
Nationwide Children's Hospital Inc	Columbus, OH	Single ventricle research fund	$220,000
New York University	New York, NY	Single ventricle research fund	$220,000
Regents of the University of California at San Diego	LA Jolla, CA	Single ventricle research fund	$220,000
Regents of the University of California at San Diego	LA Jolla, CA	Single ventricle research fund	$220,000
Regents of the University of California San Francisco	San Francisco, CA	Single ventricle research fund	$220,000
The Board of Trustees of the Leland Stanford Junior University	Redwood City, CA	Single ventricle research fund	$220,000
The Children's Hospital of Philadelphia	Philadelphia, PA	Single ventricle research fund	$220,000
Universita Degli Studi Di Torino	Torino, IT	Single ventricle research fund	$220,000
University Health Network	Toronto, CA	Single ventricle research fund	$220,000
University of Pittsburgh	Pittsburgh, PA	Single ventricle research fund	$220,000
University of South Florida	Tampa, FL	Single ventricle research fund	$220,000
Washington University in St Louis	St Louis, MO	Single ventricle research fund	$220,000
Boston Children's Hospital	Boston, MA	Single ventricle research fund	$219,901
Baylor College of Medicine	Houston, TX	Single ventricle research fund	$219,877
The University of Texas Southwestern Medical Center	Dallas, TX	Single ventricle research fund	$219,773
Seattle Children's Hospital	Seattle, WA	Single ventricle research fund	$219,095
Icahn School of Medicine at Mount Sinai	New York, NY	Single ventricle research fund	$218,508
The Children's Hospital of Philadelphia	Philadelphia, PA	Single ventricle research fund	$217,637
The Children's Mercy Hospital	Kansas City, MO	Single ventricle research fund	$216,710
The Children's Hospital of Philadelphia	Philadelphia, PA	Single ventricle research fund	$209,923
Baylor College of Medicine	Houston, TX	Single ventricle research fund	$208,396
University of Southern California	Los Angeles, CA	Single ventricle research fund	$208,162
The Chancellor Masters and Scholars of the University of Oxford	Oxford, UK	Single ventricle research fund	$198,736
Regents of the University of Colorado	Denver, CO	Single ventricle research fund	$198,578
The Medical College of Wisconsin Inc	Milwaukee, WI	Single ventricle research fund	$191,518
Northwestern University	Evanston, IL	Catalyst to independence award	$185,538
The Governors of the University of Alberta	Edmonton, CA	Single ventricle research fund	$177,483
Yale University	New Haven, CT	Cures collaborative	$150,420
The J David Gladstone Institutes	San Francisco, CA	Catalyst to independence award	$145,098
Trustees of the University of Pennsylvania	Philadelphia, PA	Catalyst to independence award	$130,257

Showing the 60 largest of 68 grants to organizations.

Grants approved for future payment

Recipient	Location	Purpose	Amount
Monash University	Mulgrave,	Single ventricle research fund	$546,113
Sanford Burnham Prebys Medical Discovery Institute	LA Jolla, CA	Catalyst to independence award	$503,608
The Governors of the University of Alberta	Edmonton,	Single ventricle research fund	$482,223
The Medical College of Wisconsin Inc	Milwaukee, WI	Single ventricle research fund	$468,482
Baylor College of Medicine	Houston, TX	Single ventricle research fund	$451,604
The Children's Hospital of Philadelphia	Philadelphia, PA	Single ventricle research fund	$450,077
Icahn School of Medicine at Mount Sinai	New York, NY	Single ventricle research fund	$441,417
The University of Texas Southwestern Medical Center	Dallas, TX	Single ventricle research fund	$440,227
Children's Hospital Medical Center	Cincinnati, OH	Single ventricle research fund	$440,000
Nationwide Children's Hospital Inc	Columbus, OH	Single ventricle research fund	$440,000
University Health Network	Toronto,	Single ventricle research fund	$440,000
University of Pittsburgh	Pittsburgh, PA	Single ventricle research fund	$440,000
Washington University in St Louis	St Louis, MO	Single ventricle research fund	$440,000
Research Institute at Nationwide Children's Hospital	Columbus, OH	Single ventricle research fund	$434,588
University of Southern California	Los Angeles, CA	Single ventricle research fund	$417,325
Trustees of the University of Pennsylvania	Philadelphia, PA	Catalyst to independence award	$378,854
Irccs Azienda Ospedaliero Universitaria Di Bologna	Bologna,	Single ventricle research fund	$362,986
Children's National Medical Center	Washington, DC	12Th annual symposium on pediatric device innovation	$150,000
The Children's Hospital of Philadelphia	Philadelphia, PA	Cardiology 2025 educational grant	$10,000

Giving by year

Tax year	Grants paid	Grant lines
2024	$17,151,264	87
2023	$16,550,146	98

Sources

IRS Form 990-PF, tax year 2024, filed Nov 14, 2025 - IRS e-file batch, object ID 202503189349103400
IRS Tax Exempt Organization Search for EIN 81-4429034
Profile updated Nov 6, 2026

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