[Form 4] Powell Industries Inc Insider Trading Activity

Rhea-AI Filing Summary

Powell Industries (POWL) insider transaction: Vice President, R&D William Marshall Mauney Jr. reported selling 770 shares of Powell Industries common stock on 09/05/2025 at a reported price of $266.8 per share. After the sale, Mauney beneficially owned 4,617 shares, some of which include time-based vested shares. The Form 4 was signed by Michael W. Metcalf as Power of Attorney on 09/09/2025. The filing discloses the officer relationship and shows a direct ownership form for the remaining shares.

Positive

• Form 4 provides clear disclosure of the officer transaction and shows compliance with Section 16 reporting requirements

Negative

• The reporting person disposed of 770 shares on 09/05/2025 at a reported price of $266.8, reducing direct beneficial ownership to 4,617 shares

Insights

Corporate Governance Expert

TL;DR: Officer sale of a modest number of shares; disclosure adheres to Section 16 reporting norms.

The Form 4 documents a single non-derivative disposition by an officer of 770 shares at $266.8 per share, leaving direct beneficial ownership of 4,617 shares. The filing notes that some shares have time-based vesting, which clarifies why the post-transaction balance includes restricted or not-yet-vested shares. The report was executed under power of attorney and dated 09/09/2025, indicating formal timely submission documentation. This is routine insider activity from a governance and compliance perspective and does not, by itself, indicate a broader corporate governance change.

Securities Analyst

TL;DR: Small officer sale recorded; limited direct market impact given size disclosed.

The transaction is a disposal of 770 common shares at $266.8 per share on 09/05/2025. Post-sale direct beneficial ownership is 4,617 shares. No derivative transactions, acquisitions, or changes to ownership percentage are reported. Because the filing shows a single routine sale and the absolute share count is modest, this disclosure is unlikely to be materially impactful to investors' valuation models absent additional context about total outstanding insider holdings or company size.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Mauney William Marshall Jr

(Last) (First) (Middle)

8550 MOSLEY ROAD

(Street)

HOUSTON TX 77075

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
POWELL INDUSTRIES INC [ POWL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Vice President, R&D

3. Date of Earliest Transaction (Month/Day/Year)
09/05/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/05/2025	09/05/2025	F		770	D	$266.8	4,617(1)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes shares that have a time-based vesting provision.

Remarks:

	Michael W. Metcalf, Power of Attorney for William Marshall Mauney, Jr.	09/09/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did William Marshall Mauney Jr. report on Form 4 for POWL?

He reported a sale of 770 shares of Powell Industries common stock on 09/05/2025 at a reported price of $266.8 per share.

How many Powell Industries shares does the reporting person own after the transaction?

The Form 4 states direct beneficial ownership of 4,617 shares following the reported transaction.

Does the Form 4 show any derivative transactions or option activity?

No. Table II for derivative securities contains no reported transactions; only a non-derivative sale is recorded.

When was the Form 4 signed and by whom?

The form was signed under power of attorney by Michael W. Metcalf on 09/09/2025.

Are any of the reported shares subject to vesting?

Yes. The filing explains that the reported beneficial ownership includes shares with a time-based vesting provision.