Guerdon Stearns Holden Trust Fbo Harvard Mineralogical Museum

Invitation Only

Boston, Massachusetts · EIN 34-6936534 · Private foundation

Grants paid (2024)$189K

Organizations funded1

Typical grant$188,755

Total assets$5.3M

Half of its grants to organizations were between $188,755 and $188,755.

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From the return

How to apply

On its return for tax year 2024 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.

Where it gives

0% of grants went outside Massachusetts.

Massachusetts1

Grants paid in tax year 2024

Recipient	Location	Purpose	Amount
The Harvard Mineralogical Museum	Cambridge, MA	General operating	$188,755

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Giving by year

Tax year	Grants paid	Grant lines
2024	$188,755	1
2023	$178,291	1

Sources

IRS Form 990-PF, tax year 2024, filed Nov 3, 2025 - IRS e-file batch, object ID 202533079349100878
IRS Tax Exempt Organization Search for EIN 34-6936534
Profile updated Nov 11, 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.