Trimix Foundation

Historical Funder

Providence, Rhode Island · EIN 05-0494244 · Private foundation

Grants paid (2024)$1.1M

Organizations funded3

Typical grant$500,000

Total assets$45.2M

Half of its grants to organizations were between $5,000 and $592,471.

From the return

How to apply

The foundation filed the following application information (Form 990-PF Part XV, tax year 2024):

Contact	MARK MIXER
Address	C/O PATHSTONE FAMILY OFFICE 50 PARK, ROW WEST NO113, PROVIDENCE RI 02903
Phone	4013835370
Form and materials	APPLICATIONS SHOULD BE WRITTEN REQUESTS ON LETTERHEAD AND SHOULD PROVIDE INFORMATION REGARDING QUALIFIED CHARITABLE STATUS AND INTENDED USE OF GRANT.
Deadlines	N/A
Restrictions	N/A

Copied as filed. Deadlines on a tax return describe the foundation's usual process; they are not confirmation of a current open cycle.

What it funds

Share of grant lines on the latest return, classified from the purpose each grant states.

Children & Youth1
STEM1

Where it gives

66% of grants went outside Rhode Island.

Grants paid in tax year 2024

Recipient	Location	Purpose	Amount
Mill Town Private Foundation	Providence, RI	Program developement	$592,471
Union College	Schenectady, NY	Science and technology building	$500,000
Railroad Street Youth Project	Great Barrington, MA	Exempt purpose	$5,000

Giving by year

Tax year	Grants paid	Grant lines
2024	$1,097,471	3
2023	$874,812	5

Sources

IRS Form 990-PF, tax year 2024, filed Nov 14, 2025 - IRS e-file batch, object ID 202513189349102111
IRS Tax Exempt Organization Search for EIN 05-0494244
Profile updated Nov 6, 2026

Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.