Richard E. Williams - 14 Aug 2026 Form 4 Insider Report for POWELL INDUSTRIES INC (POWL)

Reporting relationship: Director
Issuer ticker: POWL
Reported as of: 14 Aug 2026
Net transaction value: -$456,862
SEC form: 4
Accepted by SEC: 17 Aug 2026, 16:06:12 UTC
Prior SEC filing: 15 May 2026
Source filing: View source filing
Reporting owner signature: Michael W. Metcalf, Power of Attorney for Richard E. Williams

Key filing fact

Richard E. Williams filed Form 4 for POWELL INDUSTRIES INC (POWL) on 17 Aug 2026.

Key facts

This page summarizes Richard E. Williams's Form 4 filing for POWELL INDUSTRIES INC (POWL).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 17 Aug 2026, 16:06.

Change

Previous filing in this sequence was filed on 15 May 2026.
Current net transaction value: -$456,862.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001668421 Primary reporting owner

Williams Richard E

Relationship: Director
Address: 8550 MOSLEY ROAD, HOUSTON
Signature: Michael W. Metcalf, Power of Attorney for Richard E. Williams
Signature date: 17 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

POWL transaction

Common Stock

Sale

Transaction value: $456,862
Shares: -2,250
Change %: -5.7%
Price: $203.05
Shares after: 37,380
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 2 footnotes

Footnote F1

The sales reported in this Form 4 were affected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on April 6, 2026.

Footnote F2

Includes shares that have a time-based vesting provision.