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Form 990-PFTax year 2025EIN 45-3826353

MJS Foundation Inc

A private foundation in New York, NY. Its return for tax year 2025 lists 58 grants and $22.7 million paid in grants.

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Tax year 2025 (period ending Dec 31, 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

6 returns on file
Grants paid by tax year. The latest year is in blue.

  • Tax year 2025

    $22,667,665

    Grants listed
    58
    Assets, end of year
    $48,016,627

  • Tax year 2024

    $31,921,600

    Grants listed
    66
    Assets, end of year
    $73,921,189

  • Tax year 2023

    $29,370,698

    Grants listed
    72
    Assets, end of year
    $29,457,691

  • Tax year 2022

    $24,273,078

    Grants listed
    70
    Assets, end of year
    $42,958,423

  • Tax year 2021

    $23,351,778

    Grants listed
    61
    Assets, end of year
    $23,800,314

  • Tax year 2020

    $36,596,684

    Grants listed
    59
    Assets, end of year
    $16,740,864

Grants paid in 2025

58 grants, largest first

As listed on the return.

  1. Robin Hood FoundationNew York, NY

    General operating support for RHF'S grantmaking programs

    $5,000,000
  2. Fidelity Investments Charitable Gift FundBoston, MA

    Gift to a donor-advised fund to help MJS administer smaller gifts to charities

    $3,469,880
  3. Icahn School of Medicine at Mount SinaiNew York, NY

    Pledged gift to support the tisch cancer hospital and lung cancer center of excellence

    $2,000,000
  4. Felicity House IncNew York, NY

    Gift to support community space devoted to women with autism

    $1,000,000
  5. Icahn School of Medicine at Mount SinaiNew York, NY

    Gift to support the DR. Martin feuer pulmonary educational fund

    $1,000,000
  6. Park Avenue SynagogueNew York, NY

    Gift in honor of jim simons yahrzeit

    $1,000,000
  7. The Center for DiscoveryHarris, NY

    Pledged gift to support the endowment campaign

    $1,000,000
  8. Stony Brook FoundationStony Brook, NY

    Gift to support the MJS challenge

    $933,710
  9. University of California Berkeley FoundationBerkeley, CA

    Gift to support the climatenginuity hub pilot program

    $700,000
  10. New York Public LibraryNew York, NY

    Gift to support the annual fund

    $500,000
  11. Partnership SchoolsNew York, NY

    Pledged gift for general operating support

    $500,000
  12. Stony Brook FoundationStony Brook, NY

    Pledged gift to support the walter j. Hawrys recreational center

    $333,333
  13. Research Foundation for Mental Hygiene at NyspiMenands, NY

    Pledged gift to support the whitaker fellowship at the nys psychiatric institute

    $318,014
  14. Columbia University Medical CenterNew York, NY

    Gift to support the whitaker scholar program in developmental neuropsychiatry

    $317,356
  15. University of California Berkeley FoundationBerkeley, CA

    Gift to support the chancellor's impact fund

    $300,000
  16. Pace UniversityNew York, NY

    Gift to support the community impact internship program

    $275,000
  17. Marlene Meyerson JCC ManhattanNew York, NY

    Gift to support cancer care at the JCC in honor of DR. Alison estabrook

    $260,000
  18. Breast Cancer Research FoundationNew York, NY

    Pledged gift to support the myra j. Biblowit fund for breast cancer research

    $250,000
  19. East Harlem Tutorial ProgramNew York, NY

    Gift to support the major donors campaign

    $250,000
  20. East Harlem Tutorial ProgramNew York, NY

    Gift to support annual fund/annual friends appeal

    $250,000
  21. Everytown for Gun Safety Support Fund IncNew York, NY

    General operating support iho michael bloomberg

    $250,000
  22. Learningspring SchoolNew York, NY

    General operating support

    $250,000
  23. Milken InstituteSanta Monica, CA

    Gift to support the philanthropic investors forum

    $250,000
  24. Last WhispersLos Angeles, CA

    Gift to support the project - reversal/ode to joy (part 3)

    $220,830
  25. All Star CodeNew York, NY

    Pledged gift to support the mission of the organization

    $150,000
  26. Hunter College FoundationNew York, NY

    Gift to support the lewis burke frumkes center for writing and culture

    $150,000
  27. North Shore Child & Family Guidance CenterRoslyn HTS, NY

    Gift in memory of marie rautenberg

    $150,000
  28. Pivot Works IncAbington, MA

    Gift to support pivot's work in madagascar in honor of jim and robin herrnstein

    $150,000
  29. East Harlem Tutorial ProgramNew York, NY

    Gift to support the annual benefit gala

    $105,000
  30. American Museum of Natural HistoryNew York, NY

    Gift to support the mission of the organization

    $100,000
  31. Bard Prison InitiativeAnnandaleonhudson, NY

    Pledged gift for the bard prison initiative's college education program

    $100,000
  32. Children & Screens Institute of Digital Media and Child DevelopmentJericho, NY

    Pledged gift to support the mission of the organization

    $100,000
  33. Menorah Foundation IncAventura, FL

    Gift to support the mission of the foundation

    $100,000
  34. National September 11 Memorial and Museum at the World Trade CenterNew York, NY

    Gift to support the never forget fund

    $100,000
  35. Quad Preparatory SchoolNew York, NY

    Pledged gift to support the evergreen fund

    $100,000
  36. Rensselaer Polytechnic InstituteTroy, NY

    General operating support

    $100,000
  37. Changing Times TapNew York, NY

    Pledged gift to help further the organizations mission to preserve and create new tap dancing

    $60,000
  38. NYC Health HospitalsNew York, NY

    Gift in honor of DR. Alison estabrook for the bellevue & kings county cancer centers

    $60,000
  39. National Museum of MathematicsNew York, NY

    Gift to support the momath masters (october)

    $50,021
  40. National Museum of MathematicsNew York, NY

    Gift to support the momath masters (february)

    $50,021
  41. Autism Science FoundationScarsdale, NY

    Gift to support for the day of learning event

    $50,000
  42. Autism SpeaksWashington, DC

    Gift to support the celebrity chef gala

    $50,000
  43. Stony Brook SchoolStony Brook, NY

    Pledged gift for general operating support

    $50,000
  44. Cold Spring Harbor LaboratoryCold Spring Harbor, NY

    Gift to support the women's partnership for science

    $25,000
  45. Cold Spring Harbor LaboratoryCold Spring Harbor, NY

    Gift to support the cosmopolitan women's lunch

    $25,000
  46. Friends of Ihes IncNew York, NY

    General operating support

    $25,000
  47. Harlem Children's ZoneNew York, NY

    Gift to support the annual friend of the children award celebration

    $25,000
  48. Learningspring SchoolNew York, NY

    Gift to support the LSS blooms gala

    $25,000
  49. Let's Win Pancreatic CancerNew York, NY

    Pledged gift to support the 5th anniversary campaign

    $25,000
  50. St John the Evangelist RC Church Food Pantry (eastern Farm Workers AssociatBellport, NY

    General operating support for the eastern farm workers association

    $25,000
  51. The Mercantile Library Association of the City of New York IncBrooklyn, NY

    Gift to support the annual awards benefit

    $25,000
  52. NYC Health HospitalsNew York, NY

    Gift in honor of DR. Alison estabrook for the cancer patient navigation and support

    $20,000
  53. Chemical Marketing & Economics IncMorristown, NJ

    Gift to support the cme STEM leadership award for advancing fundamental research honoring david spergel

    $12,500
  54. Action for AutismNew Delhi, India

    Gift to support the charitable activities of action for autism for world autism awareness day

    $10,000
  55. World Science FoundationNew York, NY

    Gift pledged at the 2025 festival gala

    $10,000
  56. Cold Spring Harbor LaboratoryCold Spring Harbor, NY

    Gift to support CSHL fundraising event

    $7,500
  57. Metropolitan OperaNew York, NY

    Gift to support the mission of the organization

    $3,500
  58. Setauket Neighborhood HouseSetauket, NY

    Gift to support the mission of the organization

    $1,000

Approved for future payment

8 grants

Approved in 2025 and not yet paid.

  1. Icahn School of Medicine at MtsinaiNew York, NY

    Pledged gift to support the tisch cancer hospital and lung cancer center of excellence

    $2,000,000
  2. The Center for DiscoveryHarris, NY

    Pledged gift to support the endowment campaign

    $1,000,000
  3. Partnership SchoolsNew York, NY

    Pledged gift for general operating support

    $500,000
  4. Stony Brook FoundationStony Brook, NY

    Pledged gift to support the walter j. Hawrys recreational center

    $333,333
  5. Foundation for Independent ArtistsBrooklyn, NY

    Pledged gift to support the general operations of the barkin/selissen project

    $156,832
  6. Bard Prison InitiativeAnnandaleonhudson, NY

    Pledged gift for the bard prison initiative's college education program

    $100,000
  7. Philanthropy New YorkNew York, NY

    Gift to support the mission of the organization

    $26,750
  8. Let's Win Pancreatic CancerNew York, NY

    Pledged gift to support the 5th anniversary campaign

    $25,000

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Education17 grants $6,829,54346% of the total
  2. Philanthropy and grantmaking2 grants $5,500,00037% of the total
  3. Health3 grants $1,100,0007% of the total
  4. Arts and culture5 grants $424,3723% of the total
  5. Human services2 grants $285,0002% of the total
  6. Crime and legal aid1 grant $250,0002% of the total
  7. 4 other causes4 grants $560,0004% of the total

By State

Grants to organizations with a US address, latest year.

  1. New York49 grants $17,654,455
  2. Massachusetts2 grants $3,619,880
  3. California3 grants $1,220,830
  4. Florida1 grant $100,000
  5. District of Columbia1 grant $50,000
  6. New Jersey1 grant $12,500

Officers, directors and trustees

4 people as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Marilyn SimonsPRESIDENT & BOARD CHAIR Hours 40Pay $0
  • Joseph CosmaiTREASURER & SECRETARY/DIRECTOR Hours 0.25Pay $0
  • Jeffrey WacksmanDIRECTOR Hours 0.25Pay $0
  • Susan E GibbonsDIRECTOR Hours 0.25Pay $0

The return

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