funder-graph

FundersCA

Grants paid by The Middleton Foundation

EIN 94-3117882 · San Mateo, CA · Form 990-PF, Part XV

The Middleton Foundation of San Mateo, CA (EIN 94-3117882) reported 117 grants paid totaling $2,913,792 to 50 recipients in tax years 2020–2024, on Form 990-PF, Part XV. Derived from IRS e-file data, dataset version 2026.09.0, built 2026-09-03.

Grants paid

$2,913,792

117 grants

Recipients

50

distinct organizations

Tax years

2020–2024

4 filings in the corpus

By tax year

Grants by tax year, as the same figures
Tax yearGrants paidAmount paidApproved for future
202033$662,010
202228$673,718
202328$794,564
202428$783,500

Top recipients

The 50 recipients receiving the most from The Middleton Foundation, by grants paid, out of 50 distinct recipients.

Recipients ranked by total grants paid
RecipientMatchLocationGrantsTotal paidLatest year
Silicon Valley Community Foundation Silicon Valley Community FoundationUMountain View, CA4$2,000,0002024
United States Olympic Committee United States Olympic CommitteeUAlberta Lea, MN4$337,5002024
MIT (eaps) MIT (eaps)UCambridge, MA2$175,0002024
Opportunity International Opportunity InternationalUCarol Stream, IL3$150,0002024
MIT MIT 81-2731492DCambridge, MA1$40,0002020
Viewpoint School Viewpoint SchoolUCalabasas, CA4$35,0002024
Kyoto Prize Symposium Kyoto Prize SymposiumUSan Diego, CA2$20,0002024
Harward University Gift Hawards University GiftUCambridge, MA4$20,0002024
Science History Institute Science History InstituteUPhiladelphia, PA3$20,0002024
Rancho Sante Fe Rotary Rancho Sante Fe RotaryUSolana Beach, CA3$14,8712024
The Leakey Foundation the Leakey FoundationUSan Francisco, CA4$8,0002024
Coalition to Salute Amer Coalition to Salute AmerUWilton, CT4$8,0002024
Ananda Church Ananda ChurchUPalo Alto, CA2$6,0002024
Asia Impact Center Asis Impact CenterUNorth Fort Myers, FL1$5,0002023
Life Sciences Fnd Life Sciences FndUPhiladelphia, PA1$5,0002020
James Beard Foundation James Beard FoundationUNew York, NY1$4,0002024
Ocean Conservancy Ocean ConservancyUSanta Cruz, CA4$4,0002024
California State Parks Fnd California State Parks FndUSan Francisco, CA4$4,0002024
Pollinator Partnership Pollinator PartnershipUSan Francisco, CA4$4,0002024
Damon Runyon Cancer Research Fnd Damon Runyon Cancer Research FndUNew York, NY4$4,0002024
American School in London American School in LondonULondon4$4,0002024
Stanford (hoover Institution) Stanford (hoover Institution)UStanford, CA4$4,0002024
The Heritage Foundation the Heritage FoundationUWashington, DC4$4,0002024
Ca Highway Patrol 11-99 Ca Highway Patrol 11-99USacramento, CA4$4,0002024
San Mateo Public Library San Mateo Public LibraryUSan Mateo, CA4$4,0002024
Filoli FiloliUWoodside, CA4$3,9652024
Hillsborough Sch Fnd Hillsborough Sch FndUHillsborough, CA2$3,0002022
Commonwealth Club of Ca Commonwealth Club of CaUSan Francisco, CA4$2,8002024
Philanthropy Roundtable Philanthropy RoundtableUWashington, DC2$2,2502022
Hills Concours D'elegance Hills Concours D'eleganceUHillsborough, CA1$2,0002020
Srf Fellowship Srf FellowshipUSan Francisco, CA2$2,0002024
League to Sve Tahoe League to Save TahoeUSouth Lake Tahoe, CA2$2,0002022
Sf Ballet Sf BalletUSan Francisco, CA1$1,8002020
Unicef UnicefUSan Francisco, CA1$1,0462022
Sf Opera Sf OperaUSan Francisco, CA1$1,0002020
Muttville MuttvilleUSan Francisco, CA1$1,0002020
White Rose Foundation White Rose FoundationULos Angeles, CA1$1,0002020
Iocc IoccUBaltimore, MD1$1,0002022
Hillsborough Beautification Fnd Hillsborough Beautification FndUHillsborough, CA1$1,0002020
National Law Enforcement Officers M National Law Enforcement Officers Memorial FundUWashington, DC4$8002024
Leadership Institute Leadership InstituteUArlington, VA1$5002023
Comfort Cub Comfort CubUEncinitas, CA1$5002022
Sg Komen for the Cure Sg Komen for the CureUDallas, TX1$4002024
Susan G Komen Susan G KomenUDallas, TX1$4002022
Ucsd UcsdULa Jolla, CA1$3102020
Northern Cal Public Media Northern Cal Public MediaURohnert, CA1$2502020
US Deputy Sheriff's Assoc US Deputy Sheriff's AssocUWichita, KS1$1002020
St Joseph's Indian School St Joseph's Indian SchoolUChamberlain, SD1$1002023
American Cornerstone Institute American Cornerstone InstituteUWashington, DC1$1002024
Volunteer Firefighter Alliance Volunteer Firefighter AllianceUTopeka, KS1$1002020

Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.

Every grant

All 117 grant rows this organization reported, most recent first.

Grants reported by The Middleton Foundation
Tax yearRecipientMatchAmountTypePurposeSource filing
2024Silicon Valley Community Foundation Silicon Valley Community Foundation Mountain View, CAU$500,000paidCHARITY202513219349103796
2024MIT (eaps) MIT (eaps) Cambridge, MAU$100,000paidCHARITY202513219349103796
2024United States Olympic Committee United States Olympic Committee Alberta Lea, MNU$75,000paidCHARITY202513219349103796
2024Opportunity International Opportunity International Carol Stream, ILU$50,000paidCHARITY202513219349103796
2024Kyoto Prize Symposium Kyoto Prize Symposium San Diego, CAU$10,000paidCHARITY202513219349103796
2024Science History Institute Science History Institute Philadelphia, PAU$10,000paidCHARITY202513219349103796
2024Harward University Gift Hawards University Gift Cambridge, MAU$5,000paidCHARITY202513219349103796
2024Ananda Church Ananda Church Palo Alto, CAU$5,000paidCHARITY202513219349103796
2024Viewpoint School Viewpoint School Calabasas, CAU$5,000paidCHARITY202513219349103796
2024James Beard Foundation James Beard Foundation New York, NYU$4,000paidCHARITY202513219349103796
2024Rancho Sante Fe Rotary Rancho Sante Fe Rotary Solana Beach, CAU$3,700paidCHARITY202513219349103796
2024The Leakey Foundation the Leakey Foundation San Francisco, CAU$2,000paidCHARITY202513219349103796
2024Coalition to Salute Amer Coalition to Salute Amer Wilton, CTU$2,000paidCHARITY202513219349103796
2024Damon Runyon Cancer Research Fnd Damon Runyon Cancer Research Fnd New York, NYU$1,000paidCHARITY202513219349103796
2024San Mateo Public Library San Mateo Public Library San Mateo, CAU$1,000paidCHARITY202513219349103796
2024American School in London American School in London LondonU$1,000paidCHARITY202513219349103796
2024Ca Highway Patrol 11-99 Ca Highway Patrol 11-99 Sacramento, CAU$1,000paidCHARITY202513219349103796
2024California State Parks Fnd California State Parks Fnd San Francisco, CAU$1,000paidCHARITY202513219349103796
2024Pollinator Partnership Pollinator Partnership San Francisco, CAU$1,000paidCHARITY202513219349103796
2024Srf Fellowship Srf Fellowship San Francisco, CAU$1,000paidCHARITY202513219349103796
2024Ocean Conservancy Ocean Conservancy Santa Cruz, CAU$1,000paidCHARITY202513219349103796
2024Stanford (hoover Institution) Stanford (hoover Institution) Stanford, CAU$1,000paidCHARITY202513219349103796
2024The Heritage Foundation the Heritage Foundation Washington, DCU$1,000paidCHARITY202513219349103796
2024Commonwealth Club of Ca Commonwealth Club of Ca San Francisco, CAU$600paidCHARITY202513219349103796
2024Filoli Filoli Woodside, CAU$500paidCHARITY202513219349103796
2024Sg Komen for the Cure Sg Komen for the Cure Dallas, TXU$400paidCHARITY202513219349103796
2024National Law Enforcement Officers M National Law Enforcement Officers Memorial Fund Washington, DCU$200paidCHARITY202513219349103796
2024American Cornerstone Institute American Cornerstone Institute Washington, DCU$100paidCHARITY202513219349103796
2023Silicon Valley Community Foundation Silicon Valley Community Foundation Mountain View, CAU$500,000paidCHARITY202433189349102608
2023United States Olympic Committee United States Olympic Committee Alberta Lea, MNU$112,500paidCHARITY202433189349102608
2023MIT (eaps) MIT (eaps) Cambridge, MAU$75,000paidCHARITY202433189349102608
2023Opportunity International Opportunity International Carol Stream, ILU$50,000paidCHARITY202433189349102608
2023Viewpoint School Viewpoint School Calabasas, CAU$10,000paidCHARITY202433189349102608
2023Kyoto Prize Symposium Kyoto Prize Symposium San Diego, CAU$10,000paidCHARITY202433189349102608
2023Harward University Gift Hawards University Gift Cambridge, MAU$5,000paidCHARITY202433189349102608
2023Asia Impact Center Asis Impact Center North Fort Myers, FLU$5,000paidCHARITY202433189349102608
2023Science History Institute Science History Institute Philadelphia, PAU$5,000paidCHARITY202433189349102608
2023Rancho Sante Fe Rotary Rancho Sante Fe Rotary Solana Beach, CAU$3,164paidCHARITY202433189349102608
2023Filoli Filoli Woodside, CAU$2,500paidCHARITY202433189349102608
2023Coalition to Salute Amer Coalition to Salute Amer Wilton, CTU$2,000paidCHARITY202433189349102608
2023The Leakey Foundation the Leakey Foundation San Francisco, CAU$2,000paidCHARITY202433189349102608
2023Damon Runyon Cancer Research Fnd Damon Runyon Cancer Research Fnd New York, NYU$1,000paidCHARITY202433189349102608
2023Srf Fellowship Srf Fellowship San Francisco, CAU$1,000paidCHARITY202433189349102608
2023Stanford (hoover Institution) Stanford (hoover Institution) Stanford, CAU$1,000paidCHARITY202433189349102608
2023California State Parks Fnd California State Parks Fnd San Francisco, CAU$1,000paidCHARITY202433189349102608
2023Ca Highway Patrol 11-99 Ca Highway Patrol 11-99 Sacramento, CAU$1,000paidCHARITY202433189349102608
2023The Heritage Foundation the Heritage Foundation Washington, DCU$1,000paidCHARITY202433189349102608
2023San Mateo Public Library San Mateo Public Library San Mateo, CAU$1,000paidCHARITY202433189349102608
2023Ocean Conservancy Ocean Conservancy Santa Cruz, CAU$1,000paidCHARITY202433189349102608
2023Pollinator Partnership Pollinator Partnership San Francisco, CAU$1,000paidCHARITY202433189349102608
2023American School in London American School in London LondonU$1,000paidCHARITY202433189349102608
2023Ananda Church Ananda Church Palo Alto, CAU$1,000paidCHARITY202433189349102608
2023Commonwealth Club of Ca Commonwealth Club of Ca San Francisco, CAU$600paidCHARITY202433189349102608
2023Leadership Institute Leadership Institute Arlington, VAU$500paidCHARITY202433189349102608
2023National Law Enforcement Officers M National Law Enforcement Officers Memorial Fund Washington, DCU$200paidCHARITY202433189349102608
2023St Joseph's Indian School St Joseph's Indian School Chamberlain, SDU$100paidCHARITY202433189349102608
2022Silicon Valley Community Foundation Silicon Valley Community Foundation Mountain View, CAU$500,000paidCHARITY202343199349104624
2022United States Olympic Committee United States Olympic Committee Alberta Lea, MNU$75,000paidCHARITY202343199349104624
2022Opportunity International Opportunity International Carol Stream, ILU$50,000paidCHARITY202343199349104624
2022Viewpoint School Viewpoint School Calabasas, CAU$10,000paidCHARITY202343199349104624
2022Rancho Sante Fe Rotary Rancho Sante Fe Rotary Solana Beach, CAU$8,007paidCHARITY202343199349104624
2022Harward University Gift Hawards University Gift Cambridge, MAU$5,000paidCHARITY202343199349104624
2022Science History Institute Science History Institute Philadelphia, PAU$5,000paidCHARITY202343199349104624
2022Coalition to Salute Amer Coalition to Salute Amer Wilton, CTU$2,000paidCHARITY202343199349104624
2022The Leakey Foundation the Leakey Foundation San Francisco, CAU$2,000paidCHARITY202343199349104624
2022Hillsborough Sch Fnd Hillsborough Sch Fnd Hillsborough, CAU$1,500paidCHARITY202343199349104624
2022Unicef Unicef San Francisco, CAU$1,046paidCHARITY202343199349104624
2022Ca Highway Patrol 11-99 Ca Highway Patrol 11-99 Sacramento, CAU$1,000paidCHARITY202343199349104624
2022Damon Runyon Cancer Research Fnd Damon Runyon Cancer Research Fnd New York, NYU$1,000paidCHARITY202343199349104624
2022Iocc Iocc Baltimore, MDU$1,000paidCHARITY202343199349104624
2022Ocean Conservancy Ocean Conservancy Santa Cruz, CAU$1,000paidCHARITY202343199349104624
2022San Mateo Public Library San Mateo Public Library San Mateo, CAU$1,000paidCHARITY202343199349104624
2022California State Parks Fnd California State Parks Fnd San Francisco, CAU$1,000paidCHARITY202343199349104624
2022League to Sve Tahoe League to Save Tahoe South Lake Tahoe, CAU$1,000paidCHARITY202343199349104624
2022The Heritage Foundation the Heritage Foundation Washington, DCU$1,000paidCHARITY202343199349104624
2022Philanthropy Roundtable Philanthropy Roundtable Washington, DCU$1,000paidCHARITY202343199349104624
2022American School in London American School in London LondonU$1,000paidCHARITY202343199349104624
2022Stanford (hoover Institution) Stanford (hoover Institution) Stanford, CAU$1,000paidCHARITY202343199349104624
2022Pollinator Partnership Pollinator Partnership San Francisco, CAU$1,000paidCHARITY202343199349104624
2022Commonwealth Club of Ca Commonwealth Club of Ca San Francisco, CAU$600paidCHARITY202343199349104624
2022Comfort Cub Comfort Cub Encinitas, CAU$500paidCHARITY202343199349104624
2022Filoli Filoli Woodside, CAU$465paidCHARITY202343199349104624
2022Susan G Komen Susan G Komen Dallas, TXU$400paidCHARITY202343199349104624
2022National Law Enforcement Officers M National Law Enforcement Officers Memorial Fund Washington, DCU$200paidCHARITY202343199349104624
2020Silicon Valley Community Foundation Silicon Valley Community Foundation Mountain View, CAU$500,000paidCHARITY202103199349109095
2020United States Olympic Committee United States Olympic Committee Alberta Lea, MNU$75,000paidCHARITY202103199349109095
2020MIT MIT Cambridge, MAD$40,000paidCHARITY202103199349109095
2020Viewpoint School Viewpoint School Calabasas, CAU$10,000paidCHARITY202103199349109095
2020Harward University Gift Hawards University Gift Cambridge, MAU$5,000paidCHARITY202103199349109095
2020Life Sciences Fnd Life Sciences Fnd Philadelphia, PAU$5,000paidCHARITY202103199349109095
2020Hills Concours D'elegance Hills Concours D'elegance Hillsborough, CAU$2,000paidCHARITY202103199349109095
2020The Leakey Foundation the Leakey Foundation San Francisco, CAU$2,000paidCHARITY202103199349109095
2020Coalition to Salute Amer Coalition to Salute Amer Wilton, CTU$2,000paidCHARITY202103199349109095
2020Sf Ballet Sf Ballet San Francisco, CAU$1,800paidCHARITY202103199349109095
2020Hillsborough Sch Fnd Hillsborough Sch Fnd Hillsborough, CAU$1,500paidCHARITY202103199349109095
2020Philanthropy Roundtable Philanthropy Roundtable Washington, DCU$1,250paidCHARITY202103199349109095
2020San Mateo Public Library San Mateo Public Library San Mateo, CAU$1,000paidCHARITY202103199349109095
2020California State Parks Fnd California State Parks Fnd San Francisco, CAU$1,000paidCHARITY202103199349109095
2020The Heritage Foundation the Heritage Foundation Washington, DCU$1,000paidCHARITY202103199349109095
2020Commonwealth Club of Ca Commonwealth Club of Ca San Francisco, CAU$1,000paidCHARITY202103199349109095
2020Muttville Muttville San Francisco, CAU$1,000paidCHARITY202103199349109095
2020Damon Runyon Cancer Research Fnd Damon Runyon Cancer Research Fnd New York, NYU$1,000paidCHARITY202103199349109095
2020Sf Opera Sf Opera San Francisco, CAU$1,000paidCHARITY202103199349109095
2020Ca Highway Patrol 11-99 Ca Highway Patrol 11-99 Sacramento, CAU$1,000paidCHARITY202103199349109095
2020Ocean Conservancy Ocean Conservancy Santa Cruz, CAU$1,000paidCHARITY202103199349109095
2020League to Sve Tahoe League to Save Tahoe South Lake Tahoe, CAU$1,000paidCHARITY202103199349109095
2020American School in London American School in London LondonU$1,000paidCHARITY202103199349109095
2020White Rose Foundation White Rose Foundation Los Angeles, CAU$1,000paidCHARITY202103199349109095
2020Stanford (hoover Institution) Stanford (hoover Institution) Stanford, CAU$1,000paidCHARITY202103199349109095
2020Hillsborough Beautification Fnd Hillsborough Beautification Fnd Hillsborough, CAU$1,000paidCHARITY202103199349109095
2020Pollinator Partnership Pollinator Partnership San Francisco, CAU$1,000paidCHARITY202103199349109095
2020Filoli Filoli Woodside, CAU$500paidCHARITY202103199349109095
2020Ucsd Ucsd La Jolla, CAU$310paidCHARITY202103199349109095
2020Northern Cal Public Media Northern Cal Public Media Rohnert, CAU$250paidCHARITY202103199349109095
2020National Law Enforcement Officers M National Law Enforcement Officers Memorial Fund Washington, DCU$200paidCHARITY202103199349109095
2020US Deputy Sheriff's Assoc US Deputy Sheriff's Assoc Wichita, KSU$100paidCHARITY202103199349109095
2020Volunteer Firefighter Alliance Volunteer Firefighter Alliance Topeka, KSU$100paidCHARITY202103199349109095

Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.

Recipient matching for this dataset version has not yet completed its independent precision check. Tier A rows carry the EIN the filer reported; tiers B–D are the matcher's inference and should be read as leads until the check is published on the methodology page.

Source filings

Every figure above is traceable to one of these IRS e-file returns by its OBJECT_ID.

Returns this page is derived from
FormTax yearPeriod endFiledSchemaIRS OBJECT_ID
990PF20242024-12-31not stated2024v5.0202513219349103796
990PF20232023-12-31not stated2023v5.0202433189349102608
990PF20222022-12-31not stated2022v5.0202343199349104624
990PF20202020-12-31not stated2020v4.0202103199349109095

Derived from IRS Form 990-PF e-file XML; recipient identities from the IRS Exempt Organizations Business Master File. Dataset version 2026.09.0, built 2026-09-03. The same rows as Parquet: manifest; as JSON: /api/funders/943117882.json.

The same organization elsewhere in the program: exempt status and filing health · federal awards · grant guidance · open opportunities.

This is informational only, derived from public data on the dates shown. It is not an eligibility determination, and not legal, tax, or accounting advice. Verify against the official source before relying on it.