Arthur J. Gallagher & Co. Officer Files Form 144 for Proposed $6.74M Share Sale

Overview

On November 4, 2026, William F. Ziebell, an Officer at Arthur J. Gallagher & Co. ($AJG), submitted a Form 144 notice disclosing an intention to sell 23,510 shares of common stock through Fidelity Brokerage Services LLC. The aggregate market value of the proposed transaction is $6,738,542.30, representing an estimated price of approximately $286.62 per share.

Transaction Details

• Security: Common Stock
• Proposed Sale Quantity: 23,510 shares
• Aggregate Market Value: $6,738,542.30
• Shares Outstanding: 256,300,000 shares (~0.009% of outstanding)
• Acquisition Source: Acquired on 11/04/2026 via a cash stock option exercise directly from the issuer.
• Past Sales: No securities sales reported by the insider over the preceding three months.

Market & Trading Significance

The filing represents a routine option exercise and same-day liquidation typical of executive compensation realization. Given that the volume represents less than 0.01% of total shares outstanding, market impact on AJG is expected to be minimal, though the multimillion-dollar realization warrants routine monitoring.