Rust Foundation
The primary purpose of the Rust Foundation is to: (a) support and promote the rust project, which is the principal developer of the rust programming language, (b) support the promotion, maintenance and development, and security of the rust programming language and other projects supporting the rust language and the broader rust ecosystem; (c) cultivate the rust project team members and user communities, including by producing events; (d) manage the technical infrastructure underlying the development of rust; (e) manage and steward the rust trademark and other assets of the foundation; and (f) undertake such other activities as may from time to time be appropriate to further the purposes and achieve the goals set forth above.
Rust Foundation at a glance
In short: Rust Foundation gave $90K across 2 grants in 2025 (avg $45K), mostly in Pennsylvania. Source: 2025 IRS Form 990.
- Annual giving (2025)
- $90,000
- -72.7% vs 2024
- Grants made (2025)
- 2
- Average grant
- $45,000
- Median grant
- $45,000
- Total assets
- $3,881,934
- -17.3% vs 2024
- Primary geography
- Pennsylvania (56% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
How to apply to Rust Foundation
Open Grants
5 open opportunities from Rust Foundation
Community Grants Program - Event Support Grants
Rust Foundation
Amount
$100 - $500
Deadline
Rolling (quarterly review)
Community Grants Program - Hardship Grants
Rust Foundation
Amount
$500 - $1,500
Deadline
Rolling (quarterly review)
Community Grants Program - Project Grants
Rust Foundation
Amount
$2,500 - $15,000
Deadline
Rolling (quarterly review)
Who Rust Foundation funds
How this funder distributes its grants
Top Recipients
Top 2 recipients in 2025
The largest 2025 recipient was Carnegie Mellon University ($50K). Together the top 2 received $90K.
Grant Size Distribution
3 grants across all recorded years
The most common grant size was under $50K: 2 grants of 3 (67%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 2 itemized grants.
States
Cities
How Rust Foundation gives
- Giving grew 650% from 2022 to 2025. 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 2022 to 2025, annual grant giving ranged from $12K (2022) to $330K (2024). In 2025 it made 2 grants totaling $90K.
Hatched bars: grants paid as reported on the IRS filing, which lists no individual grants for that year.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Carnegie Mellon University Pittsburgh, PA | Financial Support for the Borrowsanitizer Project | $50,000 |
| Uc San Diego La Jolla, CA | Part of a community wide effort to verify the rust standard libraries for safety | $40,000 |
Ready to take the next step with Rust Foundation?
Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $3,881,934 | $5,274,907 | $4,810,306 | $90,000 | 2 | $105,560 |
| 2024 | $4,694,373 | $4,289,364 | $3,794,143 | $330,003 | Total only | $176,154 |
| 2023 | $3,736,867 | $2,521,299 | $3,074,941 | $261,453 | Total only | — |
| 2022 | $2,993,908 | $2,818,843 | $1,931,697 | $12,000 | 1 | — |
| 2021 | $1,745,498 | $2,074,961 | $626,157 | — | — | — |
"Total only": grants paid as reported on the IRS filing, which lists no individual grants for that year.
About Rust Foundation
Based on IRS filings
Rust Foundation is a public charity, based in Dover, DE. IRS filing data is available from 2021 through 2025. As of 2025, the organization holds $3.9M in total assets. In 2025, it awarded 2 grants totaling $90K. Net investment income was $106K.
Leadership & Key People
Officers and directors from IRS filings
Rust Foundation is led by Rebecca Rumbul, Executive Director on every filing since 2021; 7 of 25 officers listed in 2025 are compensated.
Officers on the 2025 filing
Rebecca Rumbul
Executive Director
On filings since 2021
38 hrs/week
$26K (2021) → $410K (2025)
Lars Bergstrom
Chair
Director → Chair, 2023
On filings since 2021
5 hrs/week
No compensation reported
Nell Shamrell-Harrington
Chair
Director → Vice Chair, 2023
Vice Chair → Chair, 2025
On filings since 2021
5 hrs/week
No compensation reported
Joel Marcey
Director of Technology
Director → Director of Technology, 2022
On filings since 2021
40 hrs/week
$181K (2022) → $237K (2025)
Abi Broom
Director of Finance & Operations
Director of Operations → Director of Finance & Operations, 2025
On filings since 2023
30 hrs/week
$124K (2025)
Peixin Hou
Director
On filings since 2021
3 hrs/week
No compensation reported
Jakob Degen
Director
On filings since 2023
3 hrs/week
No compensation reported
Santiago Pastorino
Director
On filings since 2023
3 hrs/week
No compensation reported
Alexandru Radovici
Director
On filings since 2024
3 hrs/week
No compensation reported
Carol Nichols
Director
On filings since 2024
3 hrs/week
No compensation reported
Andrew Wafaa
Director
New on the 2025 filing
3 hrs/week
No compensation reported
Eli Gild
Director
New on the 2025 filing
3 hrs/week
No compensation reported
Jack Huey
Director
New on the 2025 filing
3 hrs/week
No compensation reported
Jeffrey Vander Stoep
Director
New on the 2025 filing
3 hrs/week
No compensation reported
Niko Matsakis
Director
New on the 2025 filing
3 hrs/week
No compensation reported
Rohan Patil
Director
New on the 2025 filing
3 hrs/week
No compensation reported
Adam Harvey
Software Engineer
On filings since 2023
40 hrs/week
$167K (2025)
Walter Pearce
Security Engineer
On filings since 2023
40 hrs/week
$262K (2023) → $336K (2025)
Tobias Bieniek
Software Engineer
On filings since 2024
40 hrs/week
$202K (2025)
Jon Bauman
Software Engineer
New on the 2025 filing
40 hrs/week
$228K (2025)
Eric Garcia
Secretary
Director → Secretary, 2024
On filings since 2022
3 hrs/week
No compensation reported
Ryan Levick
Vice Chair
Director → Vice Chair, 2025
On filings since 2022
3 hrs/week
No compensation reported
Seth Markle
Treasurer
Director → Treasurer, 2025
On filings since 2022
3 hrs/week
No compensation reported
Scott McMurray
Treasurer
Director → Treasurer, 2024
On filings since 2023
3 hrs/week
No compensation reported
David Wood
Secretary
New on the 2025 filing
3 hrs/week
No compensation reported
Former officers (13)
- Former: Mark Rousskov (2021–2024) — Director
- Former: Andy Wafaa (2022–2024) — Director
- Former: Paul Lenz (2022–2024) — Director of Finance & Funding · Filing note: From 22022
- Former: Jan David Nose (2024) — Lead Infrastructure Engineer
- Former: Jane Losare-Lusby (2021–2023) — Director
- Former: Josh Stone (2021–2023) — Director
- Former: Tyler Mandry (2021–2023) — Director
- Former: Stephen Chin (2022–2023) — Director
- Former: Gracie Gregory (2023) — Director of Marketing & Communications
- Former: Bobby Holley (2021–2022) — Director
- Former: Florian Gilcher (2021–2022) — Director
- Former: Shane Miller (2021–2022) — Chair
- Former: Ashley Williams (2021) — Interim Executive Director
Data from IRS Form 990 filings, 2021–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $410K, to Rebecca Rumbul (Executive Director). 7 officers or directors reported compensation on that filing.
Frequently asked questions about Rust Foundation
How much does Rust Foundation give each year?
Rust Foundation gave $90K across 2 grants in 2025, according to its 2025 IRS Form 990. In 2024 it reported $330K in grants paid.
How large is Rust Foundation?
Rust Foundation reported $3.9M in total assets on its 2025 IRS Form 990. Its revenue that year was $5.3M.
Where does Rust Foundation operate?
Rust Foundation has awarded grants in California, Pennsylvania.
What is Rust Foundation's EIN?
Rust Foundation's EIN (Employer Identification Number) is 85-4376974. IRS Form 990 filing data is available on this page for 2021–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(5)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2022 (received by the IRS November 12, 2024)
- Added Form 990 for fiscal year 2025 (received by the IRS August 24, 2026)
- Updated Form 990 for fiscal year 2023 (received by the IRS November 12, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS February 24, 2026)
- IRS filings on file for fiscal years 2021–2024
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Figures come from Rust Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
Rust Foundation down — hundreds of funders to go?