Grants paid by The Jacob & Ruth Mazer Foundation Co Harriet Mazer
EIN 13-6115875 · Denver, CT · Form 990-PF, Part XV
The Jacob & Ruth Mazer Foundation Co Harriet Mazer of Denver, CT (EIN 13-6115875) reported 53 grants paid totaling $68,500 to 22 recipients in tax years 2018–2025, on Form 990-PF, Part XV. Derived from IRS e-file data, dataset version 2026.09.0, built 2026-09-03.
Grants paid
$68,500
53 grants
Recipients
22
distinct organizations
Tax years
2018–2025
8 filings in the corpus
By tax year
| Tax year | Grants paid | Amount paid | Approved for future |
|---|---|---|---|
| 2018 | 10 | $9,150 | — |
| 2019 | 9 | $7,250 | — |
| 2020 | 12 | $13,500 | — |
| 2021 | 5 | $5,800 | — |
| 2022 | 2 | $2,500 | — |
| 2023 | 3 | $8,700 | — |
| 2024 | 4 | $9,800 | — |
| 2025 | 8 | $11,800 | — |
Top recipients
The 22 recipients receiving the most from The Jacob & Ruth Mazer Foundation Co Harriet Mazer, by grants paid, out of 22 distinct recipients.
| Recipient | Match | Location | Grants | Total paid | Latest year |
|---|---|---|---|---|---|
| Aclu Foundation | U | New York, NY | 4 | $20,000 | 2025 |
| Greenwich United Way | U | Greenwich, CT | 4 | $15,500 | 2021 |
| Osborne Association 13-5563028 | C | Bronx, NY | 5 | $10,800 | 2025 |
| Greenwich Hospital Foundation | U | Cos Cob, CT | 5 | $5,000 | 2025 |
| Caramoon Center for Music Art | U | Katanah, NY | 5 | $2,500 | 2022 |
| Gems Inc | U | New York, NY | 3 | $2,250 | 2020 |
| Greenwich Hospital 06-0646659 | B | Greenwich, CT | 2 | $2,000 | 2024 |
| Southern Poverty Law Center 63-0598743 | B | Montgomery, AL | 4 | $2,000 | 2025 |
| Denver Museum of Nature Science | U | Denver, CO | 2 | $2,000 | 2025 |
| Royal River Conservation Trust 01-0472430 | B | Yarmouth, ME | 2 | $1,000 | 2025 |
| Silver Shield Association Greenwich 06-1009211 | D | Greenwich, CT | 3 | $750 | 2020 |
| Society of St Vincent de Paul | U | Maryland Heights, MO | 3 | $650 | 2020 |
| Round Hill Association 06-6051492 | B | Greenwich, CT | 2 | $550 | 2021 |
| National Resources Council of Maine | U | Augusta, ME | 1 | $500 | 2020 |
| Heard Museum 86-0107517 | B | Phoenix, AZ | 1 | $500 | 2019 |
| Maine Immigration Refugee Services 26-3099485 | C | Lewiston, ME | 1 | $500 | 2020 |
| Ray of Hope Foundation 22-3758869 | B | Mine Hill, NJ | 1 | $500 | 2025 |
| Maine Peoples Resource Center 22-2586108 | B | Portland, ME | 1 | $500 | 2025 |
| Afya Foundation 26-1300361 | B | Yonkers, NY | 1 | $300 | 2018 |
| Feldman Fund for Cancer | U | Philadelphia, PA | 1 | $250 | 2019 |
| Westchester Scholarship Fund | U | Elmsford, NY | 1 | $250 | 2019 |
| Denver South High School | U | Denver, CO | 1 | $200 | 2018 |
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 53 grant rows this organization reported, most recent first.
| Tax year | Recipient | Match | Amount | Type | Purpose | Source filing |
|---|---|---|---|---|---|---|
| 2025 | Aclu Foundation New York, NY | U | $5,000 | paid | GENERAL GRANT | 202621279349102817 |
| 2025 | Osborne Association Bronx, NY | C | $2,800 | paid | GENERAL GRANT | 202621279349102817 |
| 2025 | Denver Museum of Nature Science Denver, CO | U | $1,000 | paid | GENERAL GRANT | 202621279349102817 |
| 2025 | Greenwich Hospital Foundation Cos Cob, CT | U | $1,000 | paid | GENERAL GRANT | 202621279349102817 |
| 2025 | Ray of Hope Foundation Mine Hill, NJ | B | $500 | paid | GENERAL GRANT | 202621279349102817 |
| 2025 | Royal River Conservation Trust Yarmouth, ME | B | $500 | paid | GENERAL GRANT | 202621279349102817 |
| 2025 | Maine Peoples Resource Center Portland, ME | B | $500 | paid | GENERAL GRANT | 202621279349102817 |
| 2025 | Southern Poverty Law Center Montgomery, AL | B | $500 | paid | GENERAL GRANT | 202621279349102817 |
| 2024 | Aclu Foundation New York, NY | U | $5,000 | paid | GENERAL GRANT | 202521279349103472 |
| 2024 | Osborne Association Bronx, NY | C | $2,800 | paid | GENERAL GRANT | 202521279349103472 |
| 2024 | Greenwich Hospital Greenwich, CT | B | $1,000 | paid | GENERAL GRANT | 202521279349103472 |
| 2024 | Denver Museum of Nature Science Denver, CO | U | $1,000 | paid | GENERAL GRANT | 202521279349103472 |
| 2023 | Aclu Foundation New York, NY | U | $5,000 | paid | GENERAL GRANT | 202401219349101245 |
| 2023 | Osborne Association Bronx, NY | C | $2,700 | paid | GENERAL GRANT | 202401219349101245 |
| 2023 | Greenwich Hospital Greenwich, CT | B | $1,000 | paid | GENERAL GRANT | 202401219349101245 |
| 2022 | Osborne Association Bronx, NY | C | $2,000 | paid | GENERAL GRANT | 202301309349104330 |
| 2022 | Caramoon Center for Music Art Katanah, NY | U | $500 | paid | GENERAL GRANT | 202301309349104330 |
| 2021 | Greenwich United Way Greenwich, CT | U | $3,500 | paid | GENERAL GRANT | 202231319349100628 |
| 2021 | Greenwich Hospital Foundation Cos Cob, CT | U | $1,000 | paid | GENERAL GRANT | 202231319349100628 |
| 2021 | Caramoon Center for Music Art Katanah, NY | U | $500 | paid | GENERAL GRANT | 202231319349100628 |
| 2021 | Southern Poverty Law Center Montgomery, AL | B | $500 | paid | GENERAL GRANT | 202231319349100628 |
| 2021 | Round Hill Association Greenwich, CT | B | $300 | paid | GENERAL GRANT | 202231319349100628 |
| 2020 | Aclu Foundation New York, NY | U | $5,000 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | Greenwich United Way Greenwich, CT | U | $3,500 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | Greenwich Hospital Foundation Cos Cob, CT | U | $1,000 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | Gems Inc New York, NY | U | $750 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | Maine Immigration Refugee Services Lewiston, ME | C | $500 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | National Resources Council of Maine Augusta, ME | U | $500 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | Caramoon Center for Music Art Katanah, NY | U | $500 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | Royal River Conservation Trust Yarmouth, ME | B | $500 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | Southern Poverty Law Center Montgomery, AL | B | $500 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | Society of St Vincent de Paul Maryland Heights, MO | U | $250 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | Silver Shield Association Greenwich Greenwich, CT | D | $250 | paid | GENERAL GRANT | 202112019349100166 |
| 2020 | Round Hill Association Greenwich, CT | B | $250 | paid | GENERAL GRANT | 202112019349100166 |
| 2019 | Greenwich United Way Greenwich, CT | U | $3,500 | paid | GENERAL GRANT | 202021749349100312 |
| 2019 | Greenwich Hospital Foundation Cos Cob, CT | U | $1,000 | paid | GENERAL GRANT | 202021749349100312 |
| 2019 | Gems Inc New York, NY | U | $750 | paid | GENERAL GRANT | 202021749349100312 |
| 2019 | Heard Museum Phoenix, AZ | B | $500 | paid | GENERAL GRANT | 202021749349100312 |
| 2019 | Caramoon Center for Music Art Katanah, NY | U | $500 | paid | GENERAL GRANT | 202021749349100312 |
| 2019 | Silver Shield Association Greenwich Greenwich, CT | D | $250 | paid | GENERAL GRANT | 202021749349100312 |
| 2019 | Society of St Vincent de Paul Maryland Heights, MO | U | $250 | paid | GENERAL GRANT | 202021749349100312 |
| 2019 | Feldman Fund for Cancer Philadelphia, PA | U | $250 | paid | GENERAL GRANT | 202021749349100312 |
| 2019 | Westchester Scholarship Fund Elmsford, NY | U | $250 | paid | GENERAL GRANT | 202021749349100312 |
| 2018 | Greenwich United Way Greenwich, CT | U | $5,000 | paid | GENERAL GRANT | 201901349349102900 |
| 2018 | Greenwich Hospital Foundation Cos Cob, CT | U | $1,000 | paid | GENERAL GRANT | 201901349349102900 |
| 2018 | Gems Inc New York, NY | U | $750 | paid | GENERAL GRANT | 201901349349102900 |
| 2018 | Caramoon Center for Music Art Katanah, NY | U | $500 | paid | GENERAL GRANT | 201901349349102900 |
| 2018 | Southern Poverty Law Center Montgomery, AL | B | $500 | paid | GENERAL GRANT | 201901349349102900 |
| 2018 | Osborne Association Bronx, NY | C | $500 | paid | GENERAL GRANT | 201901349349102900 |
| 2018 | Afya Foundation Yonkers, NY | B | $300 | paid | GENERAL GRANT | 201901349349102900 |
| 2018 | Silver Shield Association Greenwich Greenwich, CT | D | $250 | paid | GENERAL GRANT | 201901349349102900 |
| 2018 | Denver South High School Denver, CO | U | $200 | paid | GENERAL GRANT | 201901349349102900 |
| 2018 | Society of St Vincent de Paul Maryland Heights, MO | U | $150 | paid | GENERAL GRANT | 201901349349102900 |
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.
| Form | Tax year | Period end | Filed | Schema | IRS OBJECT_ID |
|---|---|---|---|---|---|
| 990PF | 2025 | 2025-12-31 | not stated | 2025v4.1 | 202621279349102817 |
| 990PF | 2024 | 2024-12-31 | not stated | 2024v5.1 | 202521279349103472 |
| 990PF | 2023 | 2023-12-31 | not stated | 2023v5.0 | 202401219349101245 |
| 990PF | 2022 | 2022-12-31 | not stated | 2022v5.0 | 202301309349104330 |
| 990PF | 2021 | 2021-12-31 | not stated | 2021v4.0 | 202231319349100628 |
| 990PF | 2020 | 2020-12-31 | not stated | 2020v4.0 | 202112019349100166 |
| 990PF | 2019 | 2019-12-31 | not stated | 2019v5.0 | 202021749349100312 |
| 990PF | 2018 | 2018-12-31 | not stated | 2018v3.1 | 201901349349102900 |
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/136115875.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.