Key facts
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/ filed SCHEDULE 13G/A for AON PLC Class A Ordinary Shares (AON).
- Disclosed ownership: 4.6%.
- Date of event: 31 Mar 2025.
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ - 31 Mar 2025 SCHEDULE 13G/A Report for AON PLC Class A Ordinary Shares (AON)
- Filing Manager
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/
- Reporting Manager
- Massachusetts Financial Services Company
- Security
- AON PLC Class A Ordinary Shares
- Symbol
- AON
- Shares outstanding
- 213,748,891 shares
- Disclosed Ownership
- 9,832,449 shares
- Ownership
- 4.6%
- Form type
- SCHEDULE 13G/A
- Filing time
- 14 May 2025, 15:03:14 UTC
- Date of event
- 31 Mar 2025
- SEC
- View on sec.gov
Key filing fact
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ disclosed 4.6% ownership in AON PLC Class A Ordinary Shares (AON) on 31 Mar 2025.
Change
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 14 May 2025, 15:03.
Research use
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Reporting managers (1)
Names, ownership, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Massachusetts Financial Services Company | 4.6% | 9,832,449 | 9,194,938 | 0 | Lisa Neaves | Compliance Officer |
CIK / CUSIP context first