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Les and Betty Mack Family Charitable Foundation Inc

Grantmaking foundation in Lancaster, Wisconsin · EIN 84-3245372

Grants itemized on the 990
$18KTax year 2025
Grants made
3Tax year 2025
Total assets
$380KLatest reported
Latest IRS filing
2025Form 990 / 990-PF

Mission

POTOSI FOUNDATION

Quoted from the foundation's IRS filing.

Giving by year

$2.1K2020
$7.3K2021
$16K2022
$16K2023
$21K2024
$18K2025

Totals by tax year, rounded to two significant figures. Years without a reported total show the sum of grants itemized on the filing.

Top recipients

RecipientAmountTax year
The Varsity Collective$15K2025
St Clement Sclool$1.5K2025
Uw Foundation$1.5K2025

Amounts are rounded. The full grantee list (3 grants in 2025) is available with a free account.

See the full profile. All grants with amounts and years, board and officers, contact details, giving patterns and your organization's fit score are available with a free GrantAuthority account.

Similar foundations in Wisconsin

Source: IRS Form 990 and 990-PF filings, tax year 2025. Also see this organization on ProPublica Nonprofit Explorer.