Atkore (ATKR) officer adds dividend-equivalent RSU shares in Form 4

Rhea-AI Filing Summary

Atkore Inc. reported a routine insider ownership update for an executive. On 12/17/2025, an officer of the company, listed as Pres. Safety & Infrastructure, acquired 68.4419 shares of common stock at a price of $0. These shares represent dividend equivalent units that accrued on previously granted, unvested restricted stock units (RSUs).

Following this transaction, the reporting person beneficially owns a total of 36,981.5679 shares of Atkore common stock, which includes both unvested RSUs and the associated dividend equivalent units. The filing indicates the holdings are owned directly by the executive.

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

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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^*

Lamps Mark F.

(Last) (First) (Middle)

16100 S. LATHROP AVENUE

(Street)

HARVEY IL 60426

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Atkore Inc. [ ATKR ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Pres. Safety & Infrastructure

3. Date of Earliest Transaction (Month/Day/Year)
12/17/2025

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	12/17/2025		A		68.4419(1)	A	$0	36,981.5679(2)	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. Represents dividend equivalent units accrued on unvested restricted stock units ("RSUs").

2. Includes unvested restricted stock units ("RSUs") and amounts accrued for dividend equivalent units on such RSUs.

Remarks:

	/s/ Daniel S. Kelly, Attorney-in-Fact for Mark F. Lamps	12/19/2025
	** 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 insider transaction did Atkore (ATKR) report in this Form 4?

The filing shows an Atkore officer acquired 68.4419 shares of common stock on 12/17/2025, representing dividend equivalent units accrued on unvested RSUs at a price of $0.

Who is the Atkore (ATKR) insider involved and what is their role?

The reporting person is an officer of Atkore Inc., with the title Pres. Safety & Infrastructure, as disclosed in the filing.

How many Atkore (ATKR) shares does the insider own after this transaction?

After the reported transaction, the insider beneficially owns 36,981.5679 shares of Atkore common stock, including unvested RSUs and related dividend equivalent units.

What are dividend equivalent units as described in the Atkore (ATKR) filing?

The filing explains that the 68.4419 shares represent dividend equivalent units accrued on unvested restricted stock units (RSUs), meaning additional units credited in respect of dividends on those RSUs.

Did the Atkore (ATKR) insider pay cash for the reported shares?

No cash changed hands for this acquisition; the filing lists a $0 price because the shares arose from dividend equivalent units tied to existing unvested RSUs.

Are the Atkore (ATKR) insider’s holdings direct or indirect?

The Form 4 identifies the 36,981.5679 shares as held with an ownership form of Direct (D) by the reporting person.