William Marshall Mauney Jr serves as Executive at POWELL INDUSTRIES INC, where they oversee executive responsibilities. Since joining the company, William Marshall Mauney Jr has executed 7 insider transactions totaling $1.0M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 19, 2025 involved selling 3,000 shares valued at $995.2K.
William Marshall Mauney Jr currently holds 4,451 shares of POWELL INDUSTRIES INC (POWL), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, William Marshall Mauney Jr has been a net seller of POWL stock. They have purchased $0 and sold $1.0M worth of shares.
William Marshall Mauney Jr's most recent insider trade was on Dec 19, 2025, when they sold 3,000 shares at $331.73 per share.
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| $315.03 |
| Discretionary |
| Oct 1, 2025 | POWL | $86.2K | Award | 300 | $287.18 | Discretionary |
| Sep 30, 2025 | POWL | $140.4K | Payment | 466 | $301.28 | Discretionary |
| Sep 5, 2025 | POWL | $205.4K | Payment | 770 | $266.80 | Discretionary |
| Sep 6, 2024 | POWL | $0 | Payment | 770 | $N/A | Discretionary |
| Aug 15, 2024 | POWL | $24.6K | Sale | 150 | $163.76 | Discretionary |