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Form 990-PFTax year 2024EIN 13-3912580

Emerald Foundation Inc

A private foundation in New York, NY. Its return for tax year 2024 lists 31 grants and $1.5 million paid in grants.

Tax year 2024 (period ending Dec 31, 2024), 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

7 returns on file
Grants paid by tax year. The latest year is in blue.
  • Tax year 2024

    $1,547,500

    Grants listed
    31
    Assets, end of year
    $25,345,254
  • Tax year 2023

    $1,400,000

    Grants listed
    24
    Assets, end of year
    $26,434,742
  • Tax year 2022

    $1,265,000

    Grants listed
    20
    Assets, end of year
    $27,714,621
  • Tax year 2021

    $1,425,000

    Grants listed
    14
    Assets, end of year
    $28,512,507
  • Tax year 2020

    $1,125,000

    Grants listed
    10
    Assets, end of year
    $28,954,043
  • Tax year 2019

    $1,350,000

    Grants listed
    11
    Assets, end of year
    $30,671,225
  • Tax year 2018

    $1,350,000

    Grants listed
    11
    Assets, end of year
    $32,748,909

Grants paid in 2024

31 grants, largest first

As listed on the return. Grants to individuals show as “Individual”, with purpose and amount only.

  1. Massachusetts Institute of TechnoloCambridge, MA

    To study how ferroptosis-based strategies can enhance the efficacy of immunotherapies in breast cancer.

    $87,500
  2. University of Maryland Sch of MedicBaltimore, MD

    To investigate the regulation of treg lymphatic tumor migration and the interaction among tregs, lymphatic endothelial cells, and tumors to develop strategies of delivering targeted therapies locally instead of systemically.

    $75,000
  3. Massachusetts Institute of TechnoloCambridge, MA

    To enhance nanoparticle accumulation in desired cell types to develop more effective and safer targeted nanotherapies.

    $75,000
  4. University of Maryland Sch of MedicBaltimore, MD

    To investigate the regulation of Treg lymphatic tumor migration and the interaction among Tregs, lymphatic endothelial cells, and tumors to develop strategies of delivering targeted therapies locally instead of systemically.

    $75,000
  5. NYU School of MedicineNew York, NY

    To examine the cellular mechanisms through which dendrite-centric Alzheimer's disease pathologies result in cognitive dysfunction and hyper-excitability.

    $75,000
  6. Individual

    To identify regulators of lineage reversion that impact resistance to WNT-targeted therapies in colorectal cancer.

    $75,000
  7. Dana-Farber Cancer InstituteBoston, MA

    To map the transcriptional and protein changes induced by lactate and identify the mechanisms that cause NK suppression, on both NK and tumor cells, using high-throughput and unbiased approaches.

    $50,000
  8. Individual

    To uncover the set of cell-surface proteins that mediate essential interactions between PDAC cells and their microenvironment.

    $50,000
  9. John Hopkins UniversityBaltimore, MD

    To investigate how the colon microbiota and host genetics intersect to alter responsiveness to immunotherapy in colorectal cancer.

    $50,000
  10. Salk Institute for Biological StudiLa Jolla, CA

    To use innovative cell biology techniques coupled with genomics to investigate the role of mitochondrial-derived vesicles in cancer cell metabolism.

    $50,000
  11. University of KentuckyLexington, KY

    To understand how maladaptive changes to the integrated stress response pathway alter the force generating ability of human heart cells and determine if pharmacological manipulation can rescue cardiomyocyte function.

    $50,000
  12. Salk Institute for Bio StudiesLa Jolla, CA

    To use innovative cell biology techniques coupled with genomics to investigate the role of mitochondrial-derived vesicles in cancer cell metabolism.

    $50,000
  13. Individual

    To identify molecular mechanisms that help anaerobes cope with oxygen exposure and/or oxidative stress.

    $50,000
  14. Individual

    To identify molecular mechanisms that help anaerobes cope with oxygen exposure and/or oxidative stress.

    $50,000
  15. Individual

    To determine the mechanism through which breast cancer cell clusters dissociate into single cells and proliferate at distant sites and to determine the impact of the new environment on metastasis formation.

    $50,000
  16. University of PennsylvaniaPhiladelphia, PA

    To understand the molecular mechanism underlying immunosuppression and immunoactivation and develop new treatment strategies for hepatic malignancies.

    $50,000
  17. Dana-Farber Cancer InstituteBoston, MA

    To map the transcriptional and protein changes induced by lactate and identify the mechanisms that cause NK suppression, on both NK and tumor cells, using high-throughput and unbiased approaches.

    $50,000
  18. University of PennsylvaniaPhiladelphia, PA

    To understand the molecular mechanism underlying immunosuppression and immunoactivation and develop new treatment strategies for hepatic malignancies.

    $50,000
  19. University of KentuckyLexington, KY

    To understand how maladaptive changes to the integrated stress response pathway alter the force generating ability of human heart cells and determine if pharmacological manipulation can rescue cardiomyocyte function.

    $50,000
  20. University of MichiganAnn Arbor, MI

    To use tumor organoid and mouse models to determine how loss of Claudin proteins impacts tumor invasion and metastasis.

    $50,000
  21. Individual

    To develop interpretable machine learning methods that link spatial phenotypes in imaging data of solid tumors with patient outcomes.

    $37,500
  22. John Hopkins UniversityBaltimore, MD

    To use tumor organoid and mouse models to determine how loss of claudin proteins impacts tumor invasion and metastasis.

    $37,500
  23. Individual

    To characterize exosomes from nave and tumor-educated platelets and determine their contribution to metastatic dormancy and recurrence.

    $37,500
  24. Fox Chase Cancer CenterPhiladelphia, PA

    To investigate the role of Brg1-dependent epigenetic regulation on PDAC fibroblast pro-tumorigenic functions.

    $37,500
  25. Individual

    To develop interpretable machine learning methods that link spatial phenotypes in imaging data of solid tumors with patient outcomes.

    $37,500
  26. Who We Play for IncMelbourne, FL

    To screen young students for previously undiagnosed heart ailments and generate data that can be used to train AI programs to better evaluate electrocardiograms.

    $37,500
  27. Harvard Medical SchoolBoston, MD

    To study how SLC7A5 regulates metabolic reprogramming and signaling pathways that enable cancer cells to survive CDK4/6i treatment.

    $37,500
  28. Harvard Medical SchoolBoston, MA

    To study how SLC7A5 regulates metabolic reprogramming and signaling pathways that enable cancer cells to survive CDK4/6i treatment.

    $37,500
  29. NYU School of MedicineNew York, NY

    To characterize interactions between proteins that associate only with the KRAS4A isoform to identifying pathways that can be rationally targeted to achieve a more comprehensive interruption of KRAS stimulation.

    $37,500
  30. Individual

    To characterize exosomes from nave and tumor-educated platelets and determine their contribution to metastatic dormancy and recurrence.

    $37,500
  31. Individual

    Sponsorship of [individual] conferences Sponsorship fee - Travel Bursaries for those attending the Black in [individual] Conference (2022).

    $10,000

Where the money goes

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

  1. Education4 grants $262,50066% of the total
  2. Medical research2 grants $100,00025% of the total
  3. Health1 grant $37,5009% of the total

By State

Grants to organizations with a US address, latest year.

  1. Massachusetts5 grants $300,000
  2. Maryland5 grants $275,000
  3. Pennsylvania3 grants $137,500
  4. New York2 grants $112,500
  5. California2 grants $100,000
  6. Kentucky2 grants $100,000
  7. Michigan1 grant $50,000
  8. Florida1 grant $37,500

Officers, directors and trustees

5 people as filed

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

  • James P MahaffeyVice President Hours 40Pay $125,000
  • Andrew W HeymannPres/director Hours 8Pay $0
  • Luca CantelliDirector Hours 0.5Pay $0
  • William BlumTreasurer Hours 6Pay $0
  • Erika KellerhalsDirector Hours 0.5Pay $0

The return

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