Insider activity (SEC Form 4)
Open-market buys and sells only — the deliberate trades. Zero here doesn’t mean no filings: grants, option exercises and tax withholding (below) are compensation, not market trades.
Open-market · last 30 days:
1 buyer bought $6.5M
0 sellers sold $0
Open-market · last 90 days:
1 buyer bought $6.5M
1 seller sold $1.7M
| Insider | Role | Date | Transaction | Shares | Value |
| KNIGHT LESTER B |
Director |
2026-09-02 |
Open-market buy |
1739 |
$566K |
| KNIGHT LESTER B |
Director |
2026-09-02 |
Open-market buy |
5097 |
$1.7M |
| KNIGHT LESTER B |
Director |
2026-09-02 |
Open-market buy |
7212 |
$2.4M |
| KNIGHT LESTER B |
Director |
2026-09-02 |
Open-market buy |
4145 |
$1.4M |
| KNIGHT LESTER B |
Director |
2026-09-02 |
Open-market buy |
1440 |
$475K |
| KNIGHT LESTER B |
Director |
2026-09-02 |
Open-market buy |
367 |
$121K |
| Zeidel Darren |
General Counsel |
2026-07-28 |
Open-market sell 10b5-1 |
700 |
$263K |
| Zeidel Darren |
General Counsel |
2026-07-28 |
Open-market sell 10b5-1 |
725 |
$274K |
| Zeidel Darren |
General Counsel |
2026-07-28 |
Open-market sell 10b5-1 |
475 |
$180K |
| Zeidel Darren |
General Counsel |
2026-07-17 |
Open-market sell 10b5-1 |
625 |
$231K |
| Zeidel Darren |
General Counsel |
2026-07-17 |
Open-market sell 10b5-1 |
650 |
$242K |
| Zeidel Darren |
General Counsel |
2026-07-17 |
Open-market sell 10b5-1 |
675 |
$252K |
| Zeidel Darren |
General Counsel |
2026-07-07 |
Open-market sell 10b5-1 |
600 |
$216K |
| Reese Edmund |
Chief Financial Officer |
2026-07-01 |
Option exercise |
3975 |
— |
| Reese Edmund |
Chief Financial Officer |
2026-07-01 |
Tax withholding |
2198 |
$755K |
| Alvarez Jose Antonio |
Director |
2026-06-25 |
Grant/award |
776 |
— |
| Alvarez Jose Antonio |
Director |
2026-06-25 |
Tax withholding |
372 |
$118K |
| CAMPBELL JEFFREY C |
Director |
2026-06-25 |
Grant/award |
776 |
— |
| CAMPBELL JEFFREY C |
Director |
2026-06-25 |
Tax withholding |
186 |
$59K |
| Cai Jin-Yong |
Director |
2026-06-25 |
Grant/award |
776 |
— |
Most recent 20 reported transactions. Open-market buys (P) and sells (S) are the deliberate ones; grants and option exercises are compensation. Not investment advice.
8-K
filed 2026-09-11
confidence 95%
Item 8.01
This Item 8.01 disclosure concerns the merger of Aon's subsidiary (Merger Sub) with USI Advantage, with USI Advantage surviving as a direct, wholly-owned subsidiary of Aon North America. The filing provides audited and unaudited financial statements of USI and pro forma combined financial statements reflecting the merger. This is a material acquisition activity under Item 1.01/2.01 framework, disclosed here with supporting financial exhibits required for SEC compliance in connection with the merger transaction.
View raw filing on EDGAR →
8-K
filed 2026-08-31
confidence 99%
Item 1.01
Aon plc entered into a definitive Agreement and Plan of Merger on August 30, 2026, to acquire USI Advantage Corp. for $17 billion in cash, establishing a premier U.S. middle-market platform with expected annual synergies of $395 million and accretion to adjusted EPS in 2028, subject to regulatory approvals and expected to close in Q4 2026.
View raw filing on EDGAR →
8-K
filed 2026-08-17
confidence 75%
Item 5.02
The disclosure centers on Nadin Virani's appointment as interim Chief Financial Officer effective August 17, 2026, a material executive role. While Edmund Reese's transition from CFO is also disclosed, the principal action emphasized is Virani's appointment to fill the CFO position, supported by details of his background, compensation adjustment ($50,000/month increase), and bonus eligibility. This is a material change in senior leadership affecting investor assessment of the company's financial management.
View raw filing on EDGAR →
8-K
filed 2026-07-29
confidence 99%
Item 2.02
Aon plc issued a press release on July 29, 2026 announcing its second-quarter 2026 results of operations for the period ended June 30, 2026. The disclosure includes comprehensive financial metrics (revenue, operating income, EPS, cash flow), segment performance, and forward guidance. This is a standard quarterly earnings release filed under Item 2.02, which is material to investors assessing the company's financial performance and operational execution.
View raw filing on EDGAR →
8-K
filed 2026-07-01
confidence 95%
Item 5.07
Aon held its Annual Meeting of Shareholders on June 26, 2026, with voting results on seven proposals including election of 13 directors (approved), an advisory vote on executive compensation (not approved), ratification of auditors, and authorizations for share issuance and pre-emption rights.
View raw filing on EDGAR →
8-K
filed 2026-07-01
confidence 92%
Item 8.01
The Board approved an increase to Aon's share repurchase program by $7.5 billion, bringing total authorization to approximately $8.3 billion, representing a material capital return to shareholders.
View raw filing on EDGAR →