Key facts
- This page summarizes William Marshall Mauney Jr.'s Form 4 filing for POWELL INDUSTRIES INC (POWL).
- 2 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 02 Oct 2026, 16:41.
William Marshall Mauney Jr. - 30 Sep 2026 Form 4 Insider Report for POWELL INDUSTRIES INC (POWL)
- Reporting relationship
- Vice President, R&D
- Issuer ticker
- POWL
- Reported as of
- 30 Sep 2026
- Net transaction value
- -$56,489
- SEC form
- 4
- Accepted by SEC
- 02 Oct 2026, 16:41:02 UTC
- Prior SEC filing
- 13 May 2026
- Source filing
- View source filing
- Reporting owner signature
- Michael W. Metcalf, Power of Attorney for William Marshall Mauney, Jr.
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
William Marshall Mauney Jr. filed Form 4 for POWELL INDUSTRIES INC (POWL) on 02 Oct 2026.
Change
- Previous filing in this sequence was filed on 13 May 2026.
- Current net transaction value: -$56,489.
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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0002025220
Primary reporting owner
Mauney William Marshall Jr
- Relationship
- Vice President, R&D
- Address
- 8550 MOSLEY ROAD, HOUSTON
- Signature
- Michael W. Metcalf, Power of Attorney for William Marshall Mauney, Jr.
- Signature date
- 02 Oct 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
POWL
transaction
Common Stock
Sale
- Transaction value
- $56,489
- Shares
- -301
- Change %
- -2.8%
- Price
- $187.67
- Shares after
- 10,552
- Date
- 30 Sep 2026
- Ownership
- Direct
- Footnotes
- F1, F2, F3
POWL
transaction
Common Stock
Award
- Transaction value
- Shares
- +525
- Change %
- +5%
- Price
- $181.67*
- Shares after
- 11,077
- Date
- 01 Oct 2026
- Ownership
- Direct
- Footnotes
- F2, F3, F4
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 4 footnotes
Footnote F1
Represents the average of the high and low stock price on 09/30/2026.
Footnote F2
Includes shares that have a time-based vesting provision.
Footnote F3
The reported number of shares have been adjusted to reflect the impact of the issuer's 3-for-1 forward split of its Common Stock effected on April 2, 2026.
Footnote F4
Represents the average closing stock price from September 1, 2026 - September 30, 2026.