Guston Foundation
Donations deductibleRevenue
$3.4m
year to 31 December 2025
Expenses
$1.5m
year to 31 December 2025
Total assets
$61.8m
year to 31 December 2025
Net assets
$61.8m
assets less liabilities
Directors and trustees
4
7.4y av
Left since last filing
0
no seats appear to have opened
Officers and senior staff
1
named in Part VII
Activity
T23
Philanthropy, voluntary services and grantmaking
Guston Foundation's network
4 people1 organisationi4 people and 1 organisation on this map.The large node is the subject of this page. Solid lines are what the register itself records (4). Violet dotted lines (1) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.The board
4 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations in the tables. The network map shows same-name matches as likely links only, never as confirmed.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record.| Name | Role as filed | Since | On the board |
|---|---|---|---|
| Michael Conforti | Director | 2019 | 7 yrs |
| Musa J Mayer (also filed as Musa Mayer) | Director, President | 2019 | 7 yrs |
| Pamela A Mayer (also filed as Pamela Mayer) | Director | 2019 | 7 yrs |
| Thomas Mayer | Director, Vice President, Secretary | 2019 | 7 yrs |
Under 5 years5 to 6 years6 years or more
Officers and senior leadership
1 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.| Name | Title as filed | On the filings |
|---|---|---|
| Sarah Radic | Executive Director | since 2019 |
Pay and hours
year to 31 December 2025iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.| Name | Title as filed | Hours a week | Pay from the organisation | Related organisations | Other |
|---|---|---|---|---|---|
| Sarah Radic | Executive Director | 40 | $212k | ||
| Michael Conforti | Director | 0.25 | $5k | ||
| Musa Mayer | Director, President | 2 | $0 | ||
| Thomas Mayer | Director, Vice President, Secretary | 0.25 | $0 | ||
| Kerrie Buitrago | Director | 0.25 | $0 | ||
| Harry Cooper | Director | 0.25 | $0 | ||
| Pamela Mayer | Director | 0.25 | $0 |
About
- Legal name
- Guston Foundation
- EIN
- 461575176
- Address
- Po Box 387, West Hurley, NY, 12491-0387
- State
- New York
- Activity (NTEE)
- T23 Philanthropy, voluntary services and grantmaking
- IRS classification
- 501(c)03 (tax-exempt under section 501(c)(3) where shown)
- Classified purpose
- Philanthropy, Voluntarism & Grantmaking Foundations
- Size band
- 9 (IRS master file code)
- IRS ruling date
- 1 May 2013
- Status
- Code 01 (unconditional exemption)
- Form 990 filings on record
- 6, latest 2024
- IRS Publication 78
- POF (contributions deductible)
Most connected
Longest observed on the filings
≥7years on the filingsMichael Conforti
≥7years on the filingsMusa J Mayer
≥7years on the filingsPamela A Mayer
≥7years on the filingsThomas Mayer
Latest return
year to 31 December 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2025. US dollars, as filed.- Total assets
- $61.8m
- Net assets or fund balances
- $61.8m
Filed finances
1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.| Tax year | Total revenue | Total expenses | Surplus or deficit |
|---|---|---|---|
| 2024 | $0 | $1.4m | Deficit $1.4m |
As filed on the IRS Form 990. US dollars.