Foundations · IRS 990 filings

Foundations in Waltham, Massachusetts

44
foundations with a Waltham address
$28.4M
grants paid, FY2023–FY2025
7
say they accept unsolicited
$10,000
median grant

Grantlas lists 44 foundations that gave a Waltham, Massachusetts address on their tax filing — 43 private foundations and 1 grantmaking charity — from filings for FY2023–FY2025. Together they paid out $28.4 million in grants in their latest filing year, and 7 of them (16%) say they accept unsolicited requests.

Not every foundation here is a Waltham foundation. The city is the mailing address on the foundation’s tax filing, and when a bank or a law firm runs the trust that is the bank’s address, not the place it gives to. Check where a foundation gives before you write.

Top 25 of 44 foundations

Ranked by what they paid in grants in their latest filing, with the ones that accept unsolicited requests first, then the ones whose filing doesn’t say.

Foundations in Waltham, Massachusetts
Rvty FoundationAccepts$570,217$566,073$566,073–$574,361FY2024Locked: fit score and contacts
Revvity FoundationAccepts$324,925$448,750$201,100–$448,750FY2024Locked: fit score and contacts
The Dassault Systemes US FoundationAccepts$31,000$412,276$500–$100,000FY2025Locked: fit score and contacts
The Donald & Priscilla FeltAccepts$35,000$170,000$15,000–$50,000FY2025Locked: fit score and contacts
The John Butler Mulliken Foundation IncAccepts$75,000$75,000—FY2024Locked: fit score and contacts
Grewal Charitable FoundationAccepts$5,000$19,500$2,500–$12,000FY2024Locked: fit score and contacts
Waltham West Suburban Chamber of CommercAccepts$2,000$8,000One amountFY2024Locked: fit score and contacts
Jewish Big Brother & Big Sister Association of Greater BostonPublic foundationNot stated—Over $5k only$68,916—FY2024Locked: fit score and contacts
Paul & Phyllis Fireman CharitableInvitation only$15,000$8.1M$1,000–$1.8MFY2024Locked: fit score and contacts
Jmr Barker FoundationInvitation only$197,500$3.8M$10,000–$1MFY2024Locked: fit score and contacts
Mercer Family FoundationInvitation only$3.8M$3.8M—FY2024Locked: fit score and contacts
Rosalyn and Richard SlifkaInvitation only$50,000$3.1M$10,000–$350,000FY2024Locked: fit score and contacts
Aging Biology Foundation IncInvitation only$514,698$2.3M$481,580–$1.3MFY2024Locked: fit score and contacts
Oakpoint Charitable FoundationInvitation only$25,000$955,000$5,000–$250,000FY2024Locked: fit score and contacts
National Biomedical Research FoundationInvitation only$567,000$567,000—FY2024Locked: fit score and contacts
The A & A FundInvitation only$20,000$540,000$5,000–$150,000FY2024Locked: fit score and contacts
Doris Buffett Legacy Foundation IncInvitation only$5,000$516,025$250–$100,000FY2024Locked: fit score and contacts
Dwss IncInvitation only$33,035$507,869$3,000–$165,075FY2024Locked: fit score and contacts
The Michael & Helen Schaffer FoundationInvitation only$17,500$369,000$10,000–$50,000FY2024Locked: fit score and contacts
Weissman Family Charitable FoundationInvitation only$2,750$304,071$500–$76,237FY2024Locked: fit score and contacts
Singing Field Foundation IncInvitation only$6,000$274,500$1,000–$25,000FY2023Locked: fit score and contacts
Ellis L Phillips FoundationInvitation only$21,600$251,800$15,000–$50,000FY2024Locked: fit score and contacts
Dts Charitable Foundation IncInvitation only$7,250$219,500$2,500–$25,000FY2024Locked: fit score and contacts
Joann Denapoli CharitableInvitation only$500$176,929$10–$116,804FY2025Locked: fit score and contacts
Mr Owl FoundationInvitation only$10,000$176,000$5,000–$55,000FY2024Locked: fit score and contacts
  • Median grant and grant range come from each funder’s grant schedule; a dash means there is none to report. Community foundations and other charities list only grants over $5,000, so their figures run high.
  • “One grant” means a schedule with a single grant — no median, nothing to range over. “One amount” means several grants, all the same size.
  • A median grant larger than the grants paid is not a mistake: the grant schedule and the year’s total come from different parts of the tax filing, and a foundation can list a grant it approved in a year it paid out less.

19 more foundations — see all in Grantlas

Data from 990-PF and Form 990 filings, FY2023–FY2025. Updated November 8, 2026.