Matrix Trust Co Files Form 144 Notice to Sell $3.80M in Arthur J. Gallagher & Co. ($AJG)

Executive Summary

On September 15, 2026, Matrix Trust Co, acting as Trustee for the Arthur J Gallagher Rabbi Trust, filed a Form 144 notice of proposed sale for 15,000 shares of Arthur J. Gallagher & Co. ($AJG) Common Stock. The aggregate market value of the proposed transaction is approximately $3,799,500.00 at an estimated price of $253.30 per share.

Key Transaction Highlights

• Issuer: Arthur J. Gallagher & Co. (CIK: 0000354190)
• Reporting Entity: Matrix Trust Co (CIK: 0001784277)
• Relationship: Trustee for Arthur J Gallagher Rabbi Trust
• Securities Offered: 15,000 Common Stock shares
• Aggregate Market Value: $3,799,500.00
• Execution Broker: Pershing LLC
• Securities Outstanding: 256,300,000 shares
• Original Acquisition: Acquired on January 1, 2012, via open market purchase funded with cash.

Past 3-Month Activity

The trust has executed multiple routine sales over the preceding three months spanning June through September 2026, totaling over 32,000 shares disposed of across various trading days.

Market Impact & Significance

The proposed sale represents less than 0.01% of the 256.3 million outstanding shares of Arthur J. Gallagher & Co. Given the trustee status and ongoing scheduled liquidations through the Rabbi Trust, the trading significance is rated Low and unlikely to exert meaningful market pressure.