AONAon plc
Aon plc (which may be referred to as “Aon,” the “Company,” “we,” “us,” or “our”) is a leading global professional services firm. 10-K, Item 1
- Employees
- 60,000
- Headquarters
- Dublin 2, L2
- CEO
- Gregory C. Case
- Next results
- around Jan 29, 2027
The biggest changes in the 10-K filed 2026-02-13, this fiscal year against the last, and the sentences in the MD&A (Item 7) where management explains them, quoted word for word. Tickdelta picks sentences that name the line, a direction and a cause. It does not write explanations of its own.
Net income
+39.2% Big change FY to 2025-12-31 vs 2024-12-31“Net income attributable to Aon shareholders increased $1.0 billion to $3.7 billion, or $17.02 per diluted share, in 2025, compared to $2.7 billion, or $12.49 per diluted share, in 2024.”
Read it in the 10-K ↗
Cash from operations
+14.7% Big change FY to 2025-12-31 vs 2024-12-31The MD&A has no sentence that names a cause for this change. That can be worth a question: ask about the filing.
Revenue
+9.4% FY to 2025-12-31 vs 2024-12-31“Revenue increased $1.5 billion, or 9%, to $17.2 billion, reflecting 6% organic revenue growth, driven by net new business and ongoing strong retention and acquired revenues from NFP.”
Read it in the 10-K ↗
“Organic revenue growth, a non-GAAP measure defined under the caption “Review of Consolidated Results — Organic Revenue Growth,” was 6% in both 2025 and 2024, driven by net new business and ongoing strong retention, as well as positive net market impact.”
Read it in the 10-K ↗
Operating margin
24.4% → 25.3% (+0.9 pts) FY to 2025-12-31 vs 2024-12-31“Operating expenses increased $1.0 billion, or 8%, to $12.8 billion in 2025 due primarily to the inclusion of NFP’s operating expenses and an increase in expenses associated with 6% organic revenue growth, partially offset by $160 million of additional net restructuring savings and lower NFP transaction- and integration-related expense.”
Read it in the 10-K ↗
“Operating margin increased to 25.3% in 2025 from 24.4% in 2024, driven primarily by organic revenue growth of 6% and $160 million of net restructuring savings, partially offset by an increase in operating expenses as previously described, the addition of NFP and lower fiduciary investment income.”
Read it in the 10-K ↗
Changes are computed from the XBRL figures in the same 10-K. Hover a number to see the line item. Open the 10-K ↗
Work on AON in a spreadsheet:
Excel workbook (a sheet per section, ten years by column, charts, links to the filings) ·
CSV.
For a Google Sheet that stays up to date, paste =IMPORTDATA("https://tickdelta.com/company/AON/export.csv") into a cell.