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Mauney William Marshall Jr

Vice President, R&D

Officer

Latest: Vice President, R&D selling · May 2026

2 filings analyzed · 1 company · Latest 2026-05-13

Companies

Company Buys Sells Direction
POWELL INDUSTRIES INC POWL 0 8 Net selling

Activity

May 2026
2026-05-13 POWELL INDUSTRIES INC POWL
medium
Sell
2,500 shares
$809,218
Significance 4/10

Vice President R&D Mauney sells 2,500 shares for $809K; all prior sales poorly timed as stock rallied afterward.

William Marshall Jr., Vice President of R&D at Powell Industries, sold 2,500 shares across seven transactions on a single day for approximately $809,000, representing nearly 36% of his holdings. The transactions spanned a narrow price range, suggesting an orderly, planned reduction rather than panic selling. Notably, this is the second time in the past six months Marshall has sold POWL shares; his previous exit in December was poorly timed, as the stock moved significantly higher in the subsequent quarter, meaning he left substantial gains on the table. The current sale occurs while Powell Industries is profitable with growing revenue, and the stock remains about 8% below its 52-week high—not a distressed price point. Marshall's exclusive pattern of sales (zero open-market purchases across his three-year filing history) and the lack of any measurable success in timing his exits suggests a director-level or portfolio-driven strategy rather than conviction-based selling, though a Vice President R&D would reasonably have liquidity needs unrelated to market outlook.

December 2025
2025-12-22 POWELL INDUSTRIES INC POWL
medium
Sell
3,000 shares
$995,190
Significance 5/10

VP of R&D sold 3,000 POWL shares at $331.73; holding down 40.3% from 7,451 to 4,451 shares

Mauney William Marshall Jr., Vice President of R&D, executed a material reduction of his POWELL INDUSTRIES stake, liquidating 3,000 shares (40.3% of prior holdings) at $331.73 per share for $995,190.00 total value. The sale occurred when POWL was trading -17.6% from its 52-week high of $136.12, though the stock has posted strong 30-day (+19.3%) and 90-day (+15.2%) gains. The company fundamentals remain intact with $286.3M latest-quarter revenue, $48.2M net income, and a lean 6.58 P/E ratio, suggesting the business model is solid and the market has repriced the stock meaningfully. This transaction reduces Marshall's direct stake to 4,451 shares but does not indicate financial distress or loss of conviction in the business; a reduction of this magnitude warrants tracking whether additional insider activity emerges or whether this represents a discrete portfolio adjustment by a senior R&D officer.

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