Probalistic Computing Foundation Inc
Probalistic Computing Foundation Inc is a private foundation focused on Science & Technology, based in Cambridge, MA. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $20.8M in total assets. In 2025, it awarded 5 grants totaling $10.8M. Net investment income was $723K.
Probalistic Computing Foundation Inc at a glance
In short: Probalistic Computing Foundation Inc gave $10.8M across 5 grants in 2025 (avg $2.2M), mostly in Massachusetts. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $10,850,000
- +4517.0% vs 2024
- Grants made (2025)
- 5
- +150.0% vs 2024
- Average grant
- $2,170,000
- +1746.8% vs 2024
- Median grant
- $300,000
- Total assets
- $20,783,802
- -16.4% vs 2024
- Primary geography
- Massachusetts (94% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Probalistic Computing Foundation Inc funds
How this funder distributes its grants
Top Recipients
Top 5 recipients in 2025
The largest 2025 recipient was Convergent Research ($9.5M). Together the top 5 received $10.8M.
Grant Size Distribution
8 grants across all recorded years
The most common grant size was in the $100–250K range: 2 grants of 8 (25%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 5 itemized grants.
Cities
How Probalistic Computing Foundation Inc gives
- In 2025 it paid out well above its IRS minimum distribution (the 5% rule). Method
From the foundation's IRS Form 990 filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2023 to 2025, annual grant giving ranged from $235K (2024) to $10.8M (2025). In 2025 it made 5 grants totaling $10.8M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Convergent Research Cambridge, MA | Data and computer sciences; research | $9,500,000 |
| Massachusetts Institute of Technology Cambridge, MA | Data and computer sciences; research | $650,000 |
| ETH Zurich Foundation USA Inc New York, NY | Data and computer sciences; research | $300,000 |
| Roy Institute for the Advancement of Learning McGill University | Data and computer sciences; research | $300,000 |
| Science and Technology Futures Cambridge, MA | Data and computer sciences; research | $100,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $20,783,802 | $729,533 | $11,988,303 | $10,850,000 | 5 | $11,965,703 | $722,815 | $1,060,709 |
| 2024 | $24,853,931 | $11,767,390 | $503,046 | $235,000 | 2 | $494,369 | $604,094 | $741,125 |
| 2023 | $13,589,587 | $14,592,893 | $1,003,306 | $1,000,000 | 1 | $1,003,171 | $92,758 | $123,049 |
| 2021 | $100 | — | — | — | — | — | — | — |
Under IRS private-foundation payout rules, Probalistic Computing Foundation Inc reported a distributable amount of $1.1M for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Probalistic Computing Foundation Inc is led by Philip Butler, President, Secretary & Treasurer since 2025 (on filings since 2020); none of the 6 officers listed in 2025 report compensation.
Officers on the 2025 filing
Philip Butler
President, Secretary & Treasurer
Treasurer → President, Secretary & Treasurer, 2025
On filings since 2020
1 hr/week
No compensation reported
Sara Rendortorff-Smith
Director
Director → Secretary, 2023
Secretary → Director, 2025
On filings since 2020
1 hr/week
No compensation reported
Vikash Mansignhka
Director
President → Director, 2025
On filings since 2023
1 hr/week
No compensation reported
Santiago Suarez
Director
President → Director, 2025
On filings since 2024
1 hr/week
No compensation reported
Adam Marblestone
Director
New on the 2025 filing
1 hr/week
No compensation reported
Josh Tenebaum
Director
New on the 2025 filing
1 hr/week
No compensation reported
Former officers (2)
- Former: Zane Shelby (2023) — Secretary
- Former: Vikash Mansinghka (2020–2021) — Principal Director
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about Probalistic Computing Foundation Inc
How much does Probalistic Computing Foundation Inc give each year?
Probalistic Computing Foundation Inc gave $10.8M across 5 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $235K across 2 grants.
What is Probalistic Computing Foundation Inc's typical grant size?
Probalistic Computing Foundation Inc's median grant in 2025 was $300,000, and its average grant was $2,170,000, across 5 grants on its 2025 IRS Form 990-PF.
Where does Probalistic Computing Foundation Inc give grants?
Probalistic Computing Foundation Inc gives mostly in Massachusetts: 94% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Cambridge, MA (3 grants).
Does Probalistic Computing Foundation Inc give general operating support?
Not in 2025: none of the 5 grants with a stated purpose on Probalistic Computing Foundation Inc's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Data and computer sciences; research" (5 grants).
Who are Probalistic Computing Foundation Inc's largest grantees?
Probalistic Computing Foundation Inc's largest 2025 grantees include Convergent Research ($9,500,000), Massachusetts Institute of Technology ($650,000) and ETH Zurich Foundation USA Inc ($300,000), according to its 2025 IRS Form 990-PF. Together they received 96% of its itemized 2025 grant dollars.
How large is Probalistic Computing Foundation Inc?
Probalistic Computing Foundation Inc reported $20.8M in total assets on its 2025 IRS Form 990-PF. It paid out $12.0M in qualifying distributions that year, against a required minimum of $1.1M (roughly 5% of its investment assets).
What is Probalistic Computing Foundation Inc?
Probalistic Computing Foundation Inc is a private foundation focused on Science & Technology, based in Cambridge, MA. It holds $20.8M in total assets as of 2025.
What is Probalistic Computing Foundation Inc's EIN?
Probalistic Computing Foundation Inc's EIN (Employer Identification Number) is 82-3764421. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(2)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS April 30, 2026)
- IRS filings on file for fiscal years 2020–2024
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