William E. Waltz Jr. - 17 Dec 2025 Form 4 Insider Report for Atkore Inc. (ATKR)

Role: President and CEO, Director
Signature: /s/ Daniel S. Kelly, Attorney-in-Fact for William E. Waltz, Jr.
Issuer symbol: ATKR
Transactions as of: 17 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 19 Dec 2025, 18:14:17 UTC
Previous filing: 08 Dec 2025
Next filing: 27 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Waltz William E Jr.	President and CEO, Director	16100 SOUTH LATHROP AVENUE, HARVEY	/s/ Daniel S. Kelly, Attorney-in-Fact for William E. Waltz, Jr.	19 Dec 2025	0001674332

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ATKR	Common Stock	Award	$0	+350	+0.26%	$0.000000	135,793	17 Dec 2025	Direct	F1, F2
holding	ATKR	Common Stock						23,836	17 Dec 2025	By Trust	F3

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

Explanation of Responses:

Id	Content
F1	Represents dividend equivalent units accrued on unvested restricted stock units ("RSUs").
F2	Includes unvested restricted stock units ("RSUs") and amounts accrued for dividend equivalent units on such RSUs.
F3	Securities held directly by a trust for which the reporting person's spouse is the beneficiary. The reporting person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein, and this report shall not be deemed to be an admission that the reporting person is, for purposes of Section 16 or any other purpose, the beneficial owner of such securities.