Atkore director granted 54 dividend-equivalent shares

Atkore Inc. director A. Mark Zeffiro reported a compensation-related equity transaction involving the company’s common stock.

Rhea-AI Filing Summary

Atkore Inc. director A. Mark Zeffiro reported a compensation-related equity transaction involving the company’s common stock. On May 29, 2026, he acquired 54.4335 shares through a grant classified as dividend equivalent units accrued on unvested or deferred restricted stock units (RSUs), with no cash price per share. Following this award, his directly held position reported in the filing increased to 23,945.456 shares, which includes unvested or deferred RSUs and the associated dividend equivalent units.

Insider Trade Summary

Grant/Award: 54.4335 shares

Grant/Award 1 txn

Insider Zeffiro A Mark

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	54.4335	$0.00	$0.00

Holdings After Transaction: Common Stock — 23,945.456 shares (Direct)

Footnotes (2)

1. F1. Represents dividend equivalent units accrued on unvested or deferred restricted stock units ("RSUs").
2. F2. Includes unvested or deferred restricted stock units ("RSUs") and amounts accrued for dividend equivalent units on such RSUs.

Key Figures

Equity units granted: 54.4335 shares Holdings after transaction: 23,945.456 shares Transaction price per share: $0.0000 +2 more

5 metrics

Equity units granted 54.4335 shares Dividend equivalent units on unvested or deferred RSUs, May 29, 2026

Holdings after transaction 23,945.456 shares Total direct common stock and RSU-related units following grant

Transaction price per share $0.0000 Non-cash grant/award acquisition coded “A”

Transaction code A Grant, award, or other acquisition of non-derivative common stock

Acquire transactions count 1 transaction Only acquisition event reported in this Form 4

Key Terms

dividend equivalent units, restricted stock units ("RSUs"), Grant, award, or other acquisition

3 terms

dividend equivalent units financial

"Represents dividend equivalent units accrued on unvested or deferred restricted stock units ("RSUs")."

Dividend equivalent units are bookkeeping credits that mirror cash dividends paid on actual shares, granted to holders of stock-based awards such as restricted stock units or deferred compensation. They matter to investors because they increase a company’s reported employee compensation cost and can lead to issuance of more shares or cash payouts over time, similar to extra pay linked to ownership that affects shareholder dilution and corporate cash flow.

restricted stock units ("RSUs") financial

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

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

Grant, award, or other acquisition regulatory

"transaction_code_description: "Grant, award, or other acquisition""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Atkore (ATKR) disclose for A. Mark Zeffiro?

Atkore disclosed that director A. Mark Zeffiro acquired 54.4335 shares of common stock as a grant of dividend equivalent units on unvested or deferred RSUs. This is a compensation-related, non-cash equity award rather than an open-market purchase or sale.

How many Atkore (ATKR) shares does A. Mark Zeffiro hold after this Form 4?

After the reported transaction, A. Mark Zeffiro’s position totals 23,945.456 shares of Atkore common stock. This figure includes unvested or deferred restricted stock units and the dividend equivalent units accrued on those RSUs, as described in the filing footnotes.

Was the Atkore (ATKR) Form 4 transaction a market buy or sell?

The Form 4 does not show a market buy or sell. Instead, it reports an acquisition coded “A,” representing a grant or award of 54.4335 dividend equivalent units tied to existing unvested or deferred restricted stock units, with no purchase price paid.

What are dividend equivalent units mentioned in the Atkore (ATKR) Form 4?

Dividend equivalent units are additional share units that accrue on unvested or deferred RSUs to mirror dividends on common stock. In this filing, 54.4335 such units were credited to A. Mark Zeffiro’s RSU holdings, increasing his reported equity position without a cash transaction.

Does the Atkore (ATKR) Form 4 indicate any remaining derivative positions for A. Mark Zeffiro?

The Form 4’s derivative section is empty, indicating no derivative securities, such as stock options or similar instruments, are reported in this particular filing. The disclosed position consists solely of common stock and RSU-related units described in the non-derivative holdings table.

How is the Atkore (ATKR) Form 4 transaction coded and what does it mean?

The transaction is coded “A,” which the filing describes as a grant, award, or other acquisition. Here, it reflects 54.4335 dividend equivalent units added to A. Mark Zeffiro’s unvested or deferred RSUs, representing routine equity compensation rather than discretionary trading activity.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/02/2026 - 05:03 PM Learn about SEC filing dates

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^*

Zeffiro A Mark

(Last) (First) (Middle)

16100 SOUTH LATHROP AVENUE

(Street)

HARVEY ILLINOIS 60426

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

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

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

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

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	05/29/2026		A		54.4335(1)	A	$0	23,945.456(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 or deferred restricted stock units ("RSUs").

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

Remarks:

	/s/ Daniel S. Kelly, Attorney-in-Fact for A. Mark Zeffiro	06/02/2026
	** 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.
* Form 4: SEC 1474 (03-26)