Form4insider filings, from the source

Company · CIK 0000080420 · SIC 3613 — Switchgear & Switchboard Apparatus · Nasdaq

POWELL INDUSTRIES INC · POWL

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $15.0M · 6net −$15.0M
$10k$10k$1M$1M$100M$100MbuyssalesSep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 14, 2026 SForm 4 →Aug 17, 4:06 pm EDTRichard E WilliamsDirector2,250$203.05$456,86337,380−5.68%10b5-1
Aug 13, 2026 SForm 4 →Aug 14, 4:10 pm EDTBrett Alan CopePresident & CEO, Director4,500$207.01$931,545512,733−0.87%10b5-1
Jul 9, 2026 SForm 4 →Jul 10, 4:10 pm EDTBrett Alan CopePresident & CEO, Director4,440$241.55$1,072,482517,233−0.85%10b5-1
Jul 1, 2026 SForm 4 →Jul 6, 4:14 pm EDTBrett Alan CopePresident & CEO, Director36,000$0.01$360521,673—
Jun 30, 2026 SForm 4 →Jul 1, 4:20 pm EDTMichael William MetcalfExec Vice President4,500$284.64$1,280,86178,900−5.40%10b5-1
Jun 26, 2026 FForm 4 →Jun 29, 6:08 pm EDTPeter G HoglundVice Pres, Global Service585$287.69$168,2995,394—
Jun 25, 2026 SForm 4 →Jun 26, 5:57 pm EDTThomas W Powell10% Owner33,958$294.49$10,000,291564,736−5.67%
Jun 11, 2026 SForm 4 →Jun 12, 4:04 pm EDTBrett Alan CopePresident & CEO, Director4,440$272.64$1,210,522485,673−0.91%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.