AON Corporation
Overview
AON Corporation sponsors a self-funded health plan that covered 782 participants in plan year 2025, up 5% from the prior year. The plan year starts in January. Alongside medical, its benefits filing reports life insurance, dental, vision, short-term disability, and more.
- Plan type
- ERISA welfare benefit plan, self-funded (benefits paid from employer assets or a trust)
- Participants
- 782 · prior year 747
- Plan year
- Begins January 1 · next renewal January 2027
- Health plans filed
- AON Health Reimbursement Arrangement Plan, plan 599 (782 participants); Alexander & Alexander Services, Inc. Disability Benefits Plan, plan 504 (7 participants)
- Broker compensation
- $2.4M across insured contracts
Insurance carriers
Insured coverage reported on Schedule A. Self-funded medical claims aren't reported there.
| Carrier | Coverage | Covered | Premium | Broker comp |
|---|---|---|---|---|
| Metropolitan Life Insurance Company | Dental, Vision, HMO, Long Term Care, Life | 6,032 | $17.0M | $823K |
| Hartford Life and Accident | Long-term disability, Life, Accidental Death and Dismemberment | 22,470 | $8.1M | $322K |
| Delta Dental of Illinois | Dental | 3,806 | $4.4M | $174K |
| Kaiser Foundation Health Plan, Inc. | Medical | 300 | $3.6M | $72K |
| Kaiser Foundation Health Plan of Georgia, Inc. | Medical | 293 | $2.2M | $44K |
| Bluecross Blueshield of Illinois | Medical, Dental | 81 | $1.8M | — |
| Aetna Life Insurance Co. | Dental | 3,762 | $1.8M | $72K |
| Cigna Health and Life Insurance Company and Affiliates (cigna) | Dental, HMO | 1,532 | $1.7M | $69K |
| UnitedHealthcare Insurance Company | Vision, Dental | 1,076 | $1.4M | $59K |
| Kaiser Foundation Health Plan of Colorado | Medical | 167 | $931K | $19K |
| Vision Service Plan | Vision | 4,298 | $890K | $44K |
| ComPsych | Employee Assistance Program | 13,103 | $717K | — |
Pharmacy benefit estimate
StreamRX estimate for a plan this size. Not based on this plan's claims.
Estimated prescription spend: 782 participants × $2,371 national average per member. Usually higher once dependents are counted.
Typical savings opportunity found in independent reviews of plans this size.
Form 5500 filing details
- Filing
- Form 5500 with Schedule A, plan year 2025
- Plan sponsor
- AON Corporation
- Sponsor EIN
- 36-3051915
- Plan numbers
- 599, 504
- Filed with
- U.S. Department of Labor (EBSA) via EFAST2
Verify this filing: search EIN 36-3051915 in the Department of Labor's EFAST2 Form 5500 search.
Retirement plan
- Plan
- AON Savings Plan
- Type
- 401(k) plan
- Participants
- 24,731
About this data
Source: AON Corporation's Form 5500 filing for plan year 2025 and its Schedule A insurance reports, published by the U.S. Department of Labor. "Self-funded" means the filing reports benefits paid from employer assets or a trust, with no medical insurance contract or with a stop-loss contract. Pharmacy figures are StreamRX estimates based on national averages. StreamRX is not affiliated with AON Corporation.