Aon plc Director Lester B. Knight Acquires $6.55M in Open Market Purchases

Executive Summary

On September 2, 2026, Aon plc (NYSE: AON) Director Lester B. Knight executed significant open-market purchases of Class A Ordinary Stock through a family partnership. Across six transactions, a cumulative total of 20,000 shares were purchased at a volume-weighted average price of approximately $327.48, representing an aggregate capital commitment of $6,549,688.29.

Transaction Details

• Date of Transactions: September 2, 2026
• Nature of Acquisition: Open market purchases (Transaction Code P)
• Ownership Structure: Indirect via Family Partnership
• Price Range: $325.03 to $330.88 across multiple tranches
• Breakdown of Purchases:
  • 1,739 shares at $325.63
  • 5,097 shares at $326.53
  • 7,212 shares at $327.52
  • 4,145 shares at $328.34
  • 1,440 shares at $329.69
  • 367 shares at $330.51

Post-Transaction Holdings

Following the transactions, Lester B. Knight's total beneficial ownership stands at 318,864 shares, distributed as follows:

• Family Partnership (Indirect): 163,000 shares
• Wife (Indirect): 124,604 shares
• Personal Revocable Trust (Indirect): 26,033 shares
• Direct Ownership: 5,227 shares

Significance

A multi-million dollar open-market purchase by a director without an equity swap or 10b5-1 pre-arranged trading plan signifies strong internal confidence in the company's valuation and operational trajectory.