REPORT DIGEST NORTHERN ILLINOIS UNIVERSITY FINANCIAL AUDIT FOR THE YEAR ENDED JUNE 30, 2025 Release Date: March 5, 2026 FINDINGS THIS AUDIT: 2 CATEGORY: NEW -- REPEAT – TOTAL Category 1: 2 -- 0 -- 2 Category 2: 0 -- 0 -- 0 Category 3: 0 -- 0 -- 0 TOTAL: 2 -- 0 -- 2 FINDINGS LAST AUDIT: 2 State of Illinois, Office of the Auditor General FRANK J. MAUTINO, AUDITOR GENERAL To obtain a copy of the Report contact: Office of the Auditor General, 400 West Monroe, Suite 306, Springfield, IL 62704-9849 (217) 782-6046 or TTY (888) 261-2887 This Report Digest and Full Report are also available on the worldwide web at www.auditor.illinois.gov INTRODUCTION This digest covers the Northern Illinois University’s (University) Financial Audit as of and for the year ended June 30, 2025. A digest covering the University’s Single Audit will be separately released at a later date. In addition, a separate digest covering the University’s Compliance Examination for the year ended June 30, 2025, will be released at a later date. SYNOPSIS • (25-01) The University did not have adequate internal control over reporting its census data. FINDINGS, CONCLUSIONS, AND RECOMMENDATIONS INADEQUATE INTERNAL CONTROLS OVER CENSUS DATA Northern Illinois University (University) did not have adequate internal control over reporting its census data to provide assurance that the census data submitted to the State Universities Retirement System (System) and State Employees’ Group Insurance Program was complete and accurate. During the performance of the census examination, the auditors noted the following: • While the University had performed an initial complete reconciliation of its census data recorded by the System to its internal records, the University had not fully developed a process to annually obtain from the System the incremental changes recorded by the System in the census data records and reconcile these changes back to the University’s internal supporting records. • During cut-off testing of data transmitted by the University to the System, the auditors identified the following events were reported to the System after the close of the fiscal year in which the event occurred, resulting in inaccurate member status (active or inactive) as of fiscal year-end. -- Two new employee hires -- One employee going on a leave of absence -- Forty-nine employee terminations The result of the errors above led to contributions due to the plan being understated and inaccurate census data being utilized by the System and the State in the performance of the annual pension and OPEB actuarial valuation processes. The independent actuaries utilized by the System and the State of Illinois for the pension and OPEB plans deemed the errors immaterial to the plan level valuations as a whole. (Finding 1, Pages 6-7) We recommended the University continue to work with the System to establish the process of annually obtaining from the System the incremental changes recorded in the census data records and reconcile these changes back to the University’s internal supporting records. If differences are noted between the University’s data and the System’s data, these differences should be communicated timely and rectified to ensure the actuarial valuations are using accurate data. Further, we recommended the University strengthen controls to ensure all events occurring within the census data accumulation year are reported timely to the System so these events can be incorporated into the census data utilized in the annual actuarial valuation process. University officials accepted the finding. University officials stated they will work toward timely notification and have completed reconciliations of incremental changes. OTHER FINDING The remaining finding pertains to the University’s internal controls over user access. We will review the University’s progress towards the implementation of our recommendations in our next financial audit. AUDITOR’S OPINION The auditors stated the financial statements of the University as of and for the year ended June 30, 2025 are fairly stated in all material respects. This financial audit was conducted by RSM US LLP. COURTNEY DZIERWA Division Director This report is transmitted in accordance with Section 3-14 of the Illinois State Auditing Act. FRANK J. MAUTINO Auditor General FJM:JGR