Mazza Foundation
Private foundation Chicago, IL No recent venture fund
Mazza Foundation reports 2 venture funds, $2.6M in all.
Holdings are from its Form 990-PF return for the year ending November 30, 2025, compared with the one for November 30, 2024. Foundations file up to ten and a half months after their year ends, and the IRS publishes returns months after that.
Updates from Mazza Foundation
Largest venture holdings
From its Form 990-PF return for the year ending November 30, 2025; “New” is a fund that wasn’t on the return before it.
| Fund, as reported | Manager | Vintage | Year-end value |
|---|---|---|---|
| Grey Street Ventures III - Positive Sum II | — | — | $1.5M |
| Grey Street Ventures - Positive Sum | — | — | $1.1M |
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LPs nearby
Within 100 miles, by city: a trip to one can take in the others.
- John D and Catherine T Macarthur Foundation
- Illinois Growth and Innovation Fund (Illinois State Treasurer)
- Pritzker Traubert Foundation
- Adams Street Private Equity Navigator Fund LLC
- Adams Street Venture & Growth Fund
- Pritzker Foundation
- Circle of Service Foundation
- Flowstone Opportunity Fund
86 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 November 30, 2025; new holdings are those not on its return for the year ending November 30, 2024. 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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