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The Winifred Stuart Mankowski Foundation

Los Angeles, California · EIN 95-4158892 · tax-exempt since 1998

D

Charity Clarity grade D (score 43.2 of 100), based on the Form 990 for the year ended July 2025.

Graded against 88,048 unclassified nonprofits with revenue $500K–$2M filing the same form. A = top 10%, B = next 20%, C = middle 40%, D = next 20%, F = bottom 10%.

What goes into the grade

MeasureThis charityScore (0–100)
ReservesMonths of spending covered by unrestricted net assets.618.9 months0
GovernanceBoard independence, key policies and audit, per the 990.35% of practices35
Margin stabilityHow steady the surplus or deficit is year to year.35
Revenue spreadHow much revenue rests on one type of income.0% from one source100
Filing recordOn-time, complete filings, year after year.100%100

Scores compare this charity with its peer group; 100 is best. How Charity Clarity rates charities.

Year by year

20172018201920202022202320242025grey: revenue · green: spending
Year endedFormRevenueSpendingSurplusNet assetsMonths of spendingStaffGrade
Jul 2025Form 990$1.46M$539K$920K$27.80M618.90D
Jul 2024Form 990$1.58M$317K$1.27M$27.19M1,030.10D
Jul 2023Form 990$1.63M$502K$1.13M$26.54M633.90D
Jul 2022Form 990$5.21M$649K$4.56M$28.10M519.80F
Jul 2020Form 990$1.42M$717K$708K$24.97M418.12F
Jul 2019Form 990$521K$651K−$130K$25.69M473.45D
Jul 2018Form 990$2.79M$749K$2.04M$25.42M407.50D
Jul 2017Form 990$1.75M$746K$1.01M$24.75M398.30D

From the organisation’s own IRS filings. “Months of spending” is total net assets divided by a month of that year’s spending. A blank grade means that year was not rated.

Read the filings

Every figure here comes from the returns this charity filed with the IRS. These sites show the full returns and more about the organisation: