AON
Aon plc
Insurance Agents, Brokers & ServiceNYSELarge accelerated filer
Total Trades
40
Buys
6
Sells
21
Largest Trade
N/A
Insiders
8
Institutional Funds
1,145
Inst. Value
$1M+
Activist Filings
3
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Zeidel Darren | General Counsel | SELL | $1M+ | 4K | $329.72 | Mar 2, 2026 |
| KNIGHT LESTER B | Director | BUY | $1M+ | 4K | $319.24 | Feb 12, 2026 |
| Zeidel Darren | General Counsel | SELL | $1M+ | 9K | $344.52 | Nov 7, 2025 |
| Simon Mindy F. | COO | SELL | $100K–$500K | 650 | $394.34 | Dec 2, 2024 |
| Stevens Lisa | Chief Administrati… | SELL | $100K–$500K | 1K | $387.68 | Nov 29, 2024 |
| Spruell Byron | Director | BUY | $100K–$500K | 725 | $340.08 | Aug 29, 2024 |
| Stevens Lisa | Chief People Officer | SELL | $1M+ | 13K | $315.26 | Feb 26, 2024 |
| Stevens Lisa | Chief People Officer | EXERCISE | N/A | 639 | — | Feb 26, 2024 |
| Davies Christa | CFO | GRANT | N/A | 66K | — | Feb 20, 2024 |
| Davies Christa | CFO | EXERCISE | N/A | 4K | — | Feb 20, 2024 |
| Davies Christa | CFO | SELL | $1M+ | 40K | $313.29 | Feb 20, 2024 |
| Neller Michael | Principal Accounti… | GRANT | N/A | 4K | — | Feb 20, 2024 |
| Neller Michael | Principal Accounti… | SELL | $100K–$500K | 750 | $312.00 | Feb 20, 2024 |
| Neller Michael | Principal Accounti… | EXERCISE | N/A | 146 | — | Feb 20, 2024 |
| Davies Christa | CFO | SELL | $1M+ | 21K | $311.40 | Feb 13, 2024 |
| Davies Christa | CFO | EXERCISE | N/A | 1K | — | Feb 13, 2024 |
| KNIGHT LESTER B | Director | BUY | $1M+ | 50K | $301.97 | Feb 9, 2024 |
| Spruell Byron | Director | BUY | $100K–$500K | 800 | $324.57 | Aug 24, 2023 |
| Andersen Eric | President | SELL | $1M+ | 8K | $335.55 | May 11, 2023 |
| Davies Christa | CFO | EXERCISE | N/A | 871 | — | Feb 23, 2023 |
| Davies Christa | CFO | SELL | $1M+ | 72K | $308.70 | Feb 23, 2023 |
| Neller Michael | Principal Accounti… | SELL | $100K–$500K | 1K | $311.59 | Feb 22, 2023 |
| Neller Michael | Principal Accounti… | EXERCISE | N/A | 146 | — | Feb 22, 2023 |
| Neller Michael | Principal Accounti… | GRANT | N/A | 5K | — | Feb 22, 2023 |
| Davies Christa | CFO | SELL | $100K–$500K | 617 | $318.36 | Feb 15, 2023 |
| Davies Christa | CFO | EXERCISE | N/A | 1K | — | Feb 15, 2023 |
| Spruell Byron | Director | BUY | $100K–$500K | 400 | $291.72 | Aug 25, 2022 |
| Neller Michael | Principal Accounti… | SELL | $100K–$500K | 900 | $284.45 | Aug 9, 2022 |
| Zeidel Darren | General Counsel | SELL | $15K–$50K | 111 | $290.00 | Aug 1, 2022 |
| KNIGHT LESTER B | Director | BUY | $1M+ | 14K | $286.58 | May 10, 2022 |
| Zeidel Darren | General Counsel | EXERCISE | N/A | 148 | — | Mar 17, 2022 |
| Zeidel Darren | General Counsel | SELL | $15K–$50K | 82 | $308.31 | Mar 17, 2022 |
| Zeidel Darren | General Counsel | SELL | $50K–$100K | 317 | $290.00 | Mar 1, 2022 |
| Andersen Eric | President | SELL | $1M+ | 8K | $282.57 | Feb 25, 2022 |
| Neller Michael | Principal Accounti… | SELL | $100K–$500K | 1K | $285.00 | Feb 24, 2022 |
| Davies Christa | CFO | SELL | $1M+ | 33K | $282.51 | Feb 23, 2022 |
| Davies Christa | CFO | GRANT | N/A | 54K | — | Feb 23, 2022 |
| Davies Christa | CFO | SELL | $100K–$500K | 666 | $283.95 | Feb 17, 2022 |
| Davies Christa | CFO | SELL | $100K–$500K | 616 | $283.72 | Feb 16, 2022 |
| Davies Christa | CFO | EXERCISE | N/A | 2K | — | Feb 16, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 1,145 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Capital World Investors | 12.3M | $1M+ | SH |
| STATE STREET CORP | 9.2M | $1M+ | SH |
| DODGE & COX | 7.9M | $1M+ | SH |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 6.0M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 4.5M | $1M+ | SH |
| NORGES BANK | 3.3M | $1M+ | SH |
| WCM INVESTMENT MANAGEMENT, LLC | 2.0M | $1M+ | SH |
| POLEN CAPITAL MANAGEMENT LLC | 1.8M | $1M+ | SH |
| Mitsubishi UFJ Asset Management Co., Ltd. | 1.8M | $1M+ | SH |
| Neuberger Berman Group LLC | 1.7M | $1M+ | SH |
| DIAMOND HILL CAPITAL MANAGEMENT INC | 1.6M | $1M+ | SH |
| Mawer Investment Management Ltd. | 1.5M | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.3M | $1M+ | SH |
| LAZARD ASSET MANAGEMENT LLC | 1.3M | $1M+ | SH |
| Capital International Investors | 1.3M | $1M+ | SH |
| Longview Partners (Guernsey) LTD | 1.1M | $1M+ | SH |
| Sustainable Growth Advisers, LP | 870K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 854K | $1M+ | SH |
| VIKING GLOBAL INVESTORS LP | 784K | $1M+ | SH |
| Bank of New York Mellon Corp | 696K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Massachusetts Financial Services Company
SC 13G/A · May 14, 2025
4.6%
9.8M shares
Capital World Investors 95-1411037
SC 13G · Nov 13, 2024
5.6%
12.1M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
8.8%
17.6M shares