RX Foundation
Private foundation Hadley, MA rxfoundation.org Still adding venture funds
RX Foundation reports 5 venture funds, $1.8M in all; 1 is new since its last report.
Holdings are from its Form 990-PF return for the year ending December 31, 2024, compared with the one for December 31, 2023. That is more than a year ago: it may have added or sold funds since. Foundations file up to ten and a half months after their year ends, and the IRS publishes returns months after that. “Still adding venture funds”: 1 fund on this one was not on the one for December 31, 2023.
The numbers
| Vintage | Venture funds |
|---|---|
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 0 |
| 2019 | 0 |
| 2020 | 2 |
Updates from RX Foundation
Largest venture holdings
From its Form 990-PF return for the year ending December 31, 2024; “New” is a fund that wasn’t on the return before it.
| Fund, as reported | Manager | Vintage | Year-end value |
|---|---|---|---|
| SJF Ventures IV, LP | SJF Management LLC | 2016 | $521K |
| Ecosystem Integrity Fund III, LP | Eif (Ecosystem Integrity Fund) | 2017 | $355K |
| Ecosystem Integrity Fund IV, LP | Eif (Ecosystem Integrity Fund) | 2020 | $346K |
| SJF Ventures V, LP | SJF Management LLC | 2020 | $234K |
| Ecosystem Integrity Fund V, LP New | Eif (Ecosystem Integrity Fund) | — | $111K |
In the app: 1 fund of funds, the firm it pays to manage or advise on its investments. Open RX Foundation in LP Intelligence for every fund it holds and how to reach it, or find the LPs that back firms like yours.
LPs nearby
Within 100 miles, by city: a trip to one can take in the others.
- Connecticut Retirement Plans and Trust Funds (CRPTF)
- The Zachs Family Foundation Inc
- The Bok Family Foundation
- The Kestrel Foundation
- Traquina Family Foundation
- Arcadia Charitable Trust
- The Nancy Lurie Marks Family Foundation
- New York State Common Retirement Fund
97 LPs within 100 miles in all: see them on the map.
About this data
Holdings as this foundation lists them on its Form 990-PF (Part II, lines 13 and 15). Amounts are year-end fair market value, or book value where it gives no other, not commitments or returns. As of December 31, 2024; new holdings are those not on its return for the year ending December 31, 2023. Source: IRS Form 990-PF. Funds are linked to a manager by name; a match can be wrong, and the original filing is the record. How Hottub reads its sources.
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