William Marshall Mauney Jr.

Companies

• Powell IndustriesVice President, R&D May 31, 2024 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• PIPowell Industries POWL11,077 shares²$1.9M at $170.82Oct 1, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Oct 1, 2026Granted 525 shares at $181.67 of Powell Industries²
• Sep 30, 2026Sold 301 shares at $187.67 of Powell Industries²
• May 11, 2026Sold 9 shares at $327.69 of Powell Industries³
• May 11, 2026Sold 66 shares at $327.06 of Powell Industries³
• May 11, 2026Sold 623 shares at $325.97 of Powell Industries³
• May 11, 2026Sold 313 shares at $324.87 of Powell Industries³
• May 11, 2026Sold 176 shares at $323.82 of Powell Industries³
• May 11, 2026Sold 386 shares at $322.70 of Powell Industries³
• May 11, 2026Sold 927 shares at $321.86 of Powell Industries³
• Dec 19, 2025Sold 3,000 shares at $331.73 of Powell Industries⁴
• Dec 1, 2025Granted 3,000 shares at $315.03 of Powell Industries⁵
• Oct 1, 2025Granted 300 shares at $287.18 of Powell Industries⁶
• Sep 30, 2025Shares withheld for tax 466 shares at $301.28 of Powell Industries⁶
• Sep 5, 2025Shares withheld for tax 770 shares at $266.80 of Powell Industries⁷
• Dec 4, 2024Sold 300 shares at $287.08 of Powell Industries⁸
• Dec 4, 2024Sold 700 shares at $282.91 of Powell Industries⁸
• Oct 1, 2024Granted 400 shares at $182.14 of Powell Industries⁹
• Sep 30, 2024Shares withheld for tax 433 shares at $221.11 of Powell Industries⁹
• Sep 6, 2024Shares withheld for tax 770 shares of Powell Industries¹⁰
• Aug 15, 2024Sold 150 shares at $163.76 of Powell Industries¹¹

Trade performance

Returns are price-only (no dividends), measured from the trade date.