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Nonprofits in OAK BROOK, IL

251 tax-exempt organizations with a return on IRS file.

Largest nonprofits in OAK BROOK by revenue

Top 5s in OAK BROOK

Most raised in gifts and grants

Contributions, gifts and grants received in the year

  1. 1Lions Clubs International FTDN990, year ended Jun 2025$57.2M
  2. 2Ace Hardware Foundation990-PF, year ended Dec 2024$23.8M
  3. 3Radiological Society of North America Inc990, year ended Jun 2025$17.5M
  4. 4Advocate Aurora Health Inc990, year ended Dec 2024$8.1M
  5. 5New Directions Housing Corporation990, year ended Dec 2024$5.9M

Largest reserves

Net assets (fund balance) at year end

  1. 1Advocate Aurora Health Inc990, year ended Dec 2024$1B
  2. 2Unite Here Health990, year ended Mar 2025$1B
  3. 3Advocate Health Care Network990, year ended Dec 2024$601.8M
  4. 4Lions Clubs International FTDN990, year ended Jun 2025$435.4M
  5. 5Radiological Society of North America Inc990, year ended Jun 2025$180M

Highest-paid people

Compensation from the organization and related organizations, including other pay

  1. 1James SkogsberghChief Executive Officer · Advocate Aurora Health Inc$30.9M
  2. 2William SantulliPresident · Advocate Aurora Health Inc$7.9M
  3. 3Gary StuckChief Medical Officer · Advocate Aurora Health Inc$5M
  4. 4Dominic NakisFormer Officer · Advocate Aurora Health Inc$4.6M
  5. 5Anthony DefurioFormer Officer · Advocate Health Care Network$4.3M

All nonprofits in OAK BROOK, A–Z (page 1 of 3)