Fiscal year ending 2024. Filed on November 13, 2025.
430 Way Avenue
Saint Louis, Missouri 63122
William Matheus Sullivan Musical Foundation Inc. (EIN: 13-6069096) has filed an IRS Form 990 since at least fiscal year 2016. In its fiscal year 2024 IRS Form 990 filing, William Matheus Sullivan Musical Foundation Inc., a 501(c)(3) charitable organization, reported compensation for 15 employees. Among the employees shown here, the average compensation is $12,000. The highest compensated employee at William Matheus Sullivan Musical Foundation Inc. is Maria Schlafly with fiscal year 2024 compensation of $45,000.
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Employee compensation
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