A Form 4 filed with the SEC on August 17, 2026 discloses that Richard E. Williams, a director of Powell Industries Inc (NASDAQ:POWL), sold 2,250 shares of common stock on August 14, 2026 at a price of $203.05 per share pursuant to a Rule 10b5-1 trading plan.

Key Highlights

  • Reporting person: Richard E. Williams, Director at Powell Industries Inc
  • Transaction: Sale (Code S) of 2,250 shares of common stock on August 14, 2026
  • Sale price: $203.05 per share
  • Post-transaction ownership: 37,380 shares of common stock beneficially owned directly following the transaction
  • Rule 10b5-1 plan: The sales were made pursuant to a trading plan adopted by Williams on April 6, 2026
  • Shares with vesting provisions: The post-transaction total includes shares that have a time-based vesting provision, according to the filing

Williams Disposes of Powell Industries Shares Under Pre-Established Trading Plan

According to the filing, Richard E. Williams, listed as a Director of Powell Industries Inc, disposed of 2,250 shares of common stock on August 14, 2026 at $203.05 per share. The form indicates a deemed execution date of August 14, 2026, the same as the transaction date. The filing was signed by Michael W. Metcalf as Power of Attorney for Richard E. Williams and submitted on August 17, 2026.

The filing discloses that the sales were "affected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on April 6, 2026." The form also notes that the 37,380 shares reported as beneficially owned following the transaction include shares that carry a time-based vesting provision. All reported shares are held directly. No derivative securities transactions were reported in Table II of the filing.

What Was Disclosed

The Form 4 discloses a single sale of 2,250 common shares of Powell Industries Inc by Director Richard E. Williams at $203.05 per share on August 14, 2026, executed under a Rule 10b5-1 plan adopted April 6, 2026, leaving him with 37,380 directly held shares.