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Illuminus Inc F/K/A Marquardt Management Services Inc

EIN 39-1756037Watertown, WIHuman ServicesLatest 990 FY2025

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Listed with the IRS. Every screen came back clear.

A 501(c)(3) on Publication 78 and the IRS master file.

A paid feature, included from the $75 plan up. Sign in to download.Checked Oct 15, 2026, 10:10 PM ET
IRS listing
Listed
Revocation
None
IRS files
Agree
Sanctions
No match
IRS bulletin
No notice
California
No record
Charity type
Type I

$18Mrevenue
FY2025 · +124% in 3 yrs
8 of 8years filed
’18’19’20’21’22’23’24’25
Revenue and spendingRevenueSpending
$0$5.0M$10M$15M$20M’18’19’20’21’22’23’24’25
Against similar nonprofits FY2025
Operating margin17.2%
Months of reserve0.6mo
Revenue growth (annualized)+24.8%
Middle half of peersMedianIlluminus Inc F/K/A Marquardt Management Services
Where the money goes FY2025 · $15M spent
Programs$14M96%Management and general$611k4%990 FY2025 · Part IX line 25