Atkore (ATKR) executive adds 67.7544 dividend equivalent RSU units

Rhea-AI Filing Summary

Atkore Inc. executive Mark F. Lamps, President of Safety & Infrastructure, reported an acquisition of 67.7544 shares of common stock on a Form 4. These represent dividend equivalent units accrued on his unvested restricted stock units. Following this award, his directly held common stock position is 36,049.3223 shares, including unvested RSUs and related dividend equivalents.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Lamps Mark F.

Role Pres. Safety & Infrastructure

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	67.754	$0.00	--

Holdings After Transaction: Common Stock — 36,049.322 shares (Direct)

Footnotes (1)

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

Form 4 Insider Transactions: What Each Field Means →

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^*

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)
02/27/2026

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	02/27/2026		A		67.7544(1)	A	$0	36,049.3223(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	03/03/2026
	** 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 for Mark F. Lamps?

Atkore reported that Mark F. Lamps acquired 67.7544 shares of common stock. The Form 4 states these are dividend equivalent units accrued on his unvested restricted stock units, increasing his directly held position to 36,049.3223 shares including unvested RSUs and related dividend equivalents.

What do the 67.7544 Atkore (ATKR) shares acquired by Mark F. Lamps represent?

The 67.7544 shares represent dividend equivalent units tied to unvested restricted stock units. According to the filing, these units accrue as dividends are paid on Atkore common stock, effectively increasing Lamps’ RSU-based holdings without a cash purchase, at a reported price of $0.0000 per share.

How many Atkore (ATKR) shares does Mark F. Lamps hold after this Form 4 transaction?

After this transaction, Mark F. Lamps is reported to hold 36,049.3223 shares of Atkore common stock. The total includes both unvested restricted stock units and dividend equivalent units accrued on those RSUs, all classified as directly owned in the Form 4 filing.

Was cash paid for the 67.7544 Atkore (ATKR) shares reported in the Form 4?

No cash payment is indicated for the 67.7544 shares. The Form 4 lists a transaction price of $0.0000 per share, explaining that these shares are dividend equivalent units accrued on unvested restricted stock units rather than an open-market or cash purchase transaction.

What role does Mark F. Lamps hold at Atkore (ATKR) in this Form 4 filing?

Mark F. Lamps is identified as an officer of Atkore with the title “Pres. Safety & Infrastructure.” The reported transaction reflects changes in his equity-based compensation holdings, specifically dividend equivalent units and unvested restricted stock units, rather than a traditional market buy or sell of shares.

How is ownership classified for Mark F. Lamps’ Atkore (ATKR) shares in this Form 4?

The Form 4 classifies Mark F. Lamps’ holdings as direct ownership. It specifies an ownership code of “D” and states that the 36,049.3223 shares following the transaction include unvested restricted stock units and accrued dividend equivalent units associated with those RSUs.