William E. Waltz Jr. - 04 Dec 2025 Form 4 Insider Report for Quanex Building Products CORP (NX)

Role: Director
Signature: /s/ Paul B. Cornett, Power of Attorney
Issuer symbol: NX
Transactions as of: 04 Dec 2025
Net transactions value: +$23,750
Form type: 4
Filing time: 08 Dec 2025, 16:20:06 UTC
Previous filing: 19 Nov 2025
Next filing: 19 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Waltz William E Jr.	Director	945 BUNKER HILL, SUITE 900, HOUSTON	/s/ Paul B. Cornett, Power of Attorney	08 Dec 2025	0001674332

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	NX	Phantom Stock Units	Award	$23,750	+1,739	+9.3%	$13.66	20,474	04 Dec 2025	Common Stock	1,739		Direct	F1, F2, F3

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

Explanation of Responses:

Id	Content
F1	Units credited to the participant's account under the Deferred Compensation Plan as a result of deferral of Director Compensation.
F2	Each Phantom Stock Unit is the economic equivalent of one share of common stock. Distributions under the Deferred Compensation Plan are made in cash beginning on a specified date selected by the participant or upon the participant's death, disability, or termination of service as a director.
F3	Includes 104.816 phantom stock units credited to the participant's account as a result of automatic dividend reinvestment.