William Marshall Mauney Jr. - 01 Dec 2025 Form 4 Insider Report for POWELL INDUSTRIES INC (POWL)

Role: Vice President, R&D
Signature: Michael W. Metcalf, Power of Attorney for William Marshall Mauney, Jr.
Issuer symbol: POWL
Transactions as of: 01 Dec 2025
Net transactions value: +$945,090
Form type: 4
Filing time: 03 Dec 2025, 16:49:45 UTC
Previous filing: 01 Oct 2025
Next filing: 22 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Mauney William Marshall Jr	Vice President, R&D	8550 MOSLEY ROAD, HOUSTON	Michael W. Metcalf, Power of Attorney for William Marshall Mauney, Jr.	03 Dec 2025	0002025220

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	POWL	Common Stock	Award	$945,090	+3,000	+67%	$315.03	7,451	01 Dec 2025	Direct	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares granted under the Company's long-term equity compensation plan (performance-vesting restricted stock unit agreement).
F2	Represents the average of the high and low stock price on 12/01/2025.
F3	Includes shares that have a time-based vesting provision.