Walter D. Bay serves as Executive at GALLAGHER ARTHUR J & CO, where they oversee executive responsibilities. Since joining the company, Walter D. Bay has executed 157 insider transactions totaling $29.6M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 19, 2025 involved gifting 1,724 shares valued at $0.
Walter D. Bay currently holds 77,825 shares of GALLAGHER ARTHUR J & CO (AJG), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Walter D. Bay has been a net seller of AJG stock. They have purchased $0 and sold $29.6M worth of shares.
Walter D. Bay's most recent insider trade was on Dec 19, 2025, when they sold 1,724 shares at $0.00 per share.
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| $255.00 |
| Discretionary |
| Dec 19, 2025 | AJG | $1.3M | Option Exercise | 15,850 | $79.59 | Discretionary |
| Jul 30, 2024 | AJG | $1.8M | Sale | 6,335 | $284.06 | Discretionary |
| Jun 18, 2024 | AJG | $2.2M | Sale | 8,303 | $262.74 | Discretionary |
| May 20, 2024 | AJG | $56.6K | Option Exercise | 800 | $70.74 | Discretionary |
| May 20, 2024 | AJG | $205.8K | Sale | 800 | $257.24 | Discretionary |
| May 17, 2024 | AJG | $99.6K | Sale | 386 | $258.11 | Discretionary |
| May 17, 2024 | AJG | $1.2M | Sale | 4,468 | $257.53 | Discretionary |
| May 17, 2024 | AJG | $990.0K | Sale | 3,863 | $256.27 | Discretionary |
| May 17, 2024 | AJG | $616.6K | Option Exercise | 8,717 | $70.74 | Discretionary |
| May 16, 2024 | AJG | $1.9M | Sale | 7,283 | $256.04 | Discretionary |
| May 16, 2024 | AJG | $515.2K | Option Exercise | 7,283 | $70.74 | Discretionary |
| May 16, 2024 | AJG | $1.9M | Sale | 7,576 | $253.00 | Discretionary |
| Mar 16, 2024 | AJG | $976.7K | Payment | 3,858 | $253.17 | Discretionary |
| Mar 16, 2024 | AJG | $0 | Option Exercise | 8,914 | $N/A | Discretionary |
| Mar 16, 2024 | AJG | $0 | Award | 8,914 | $N/A | Discretionary |
| Mar 16, 2024 | AJG | $0 | Option Exercise | 8,914 | $N/A | Discretionary |
| Mar 14, 2024 | AJG | $0 | Option Exercise | 3,500 | $N/A | Discretionary |
| Mar 14, 2024 | AJG | $0 | Option Exercise | 3,500 | $N/A | Discretionary |
| Mar 14, 2024 | AJG | $249.8K | Payment | 980 | $254.91 | Discretionary |
| Sep 15, 2023 | AJG | $1.2M | Option Exercise | 21,800 | $56.86 | Discretionary |
| Sep 15, 2023 | AJG | $5.1M | Sale | 21,800 | $232.00 | Discretionary |
| Mar 15, 2023 | AJG | $314.0K | Payment | 1,773 | $177.09 | Discretionary |
| Mar 15, 2023 | AJG | $0 | Option Exercise | 4,000 | $N/A | Discretionary |
| Mar 15, 2023 | AJG | $0 | Option Exercise | 4,000 | $N/A | Discretionary |
| Mar 12, 2023 | AJG | $645.1K | Payment | 3,530 | $182.76 | Discretionary |
| Mar 12, 2023 | AJG | $0 | Option Exercise | 9,800 | $N/A | Discretionary |
| Mar 12, 2023 | AJG | $0 | Option Exercise | 9,800 | $N/A | Discretionary |
| Mar 12, 2023 | AJG | $0 | Award | 9,800 | $N/A | Discretionary |