[Form 4] Atkore Inc. Insider Trading Activity

Rhea-AI Filing Summary

Atkore Inc. insider sale under 10b5-1 plan. The filing shows Mark F. Lamps, President, Safety & Infrastructure, disposed of 1,000 shares of Atkore common stock on 08/15/2025 at $59.37 per share under a Rule 10b5-1 trading plan adopted February 6, 2025. After the sale, the reporting person beneficially owns 31,872.8353 shares, a total that explicitly includes unvested restricted stock units and accrued dividend-equivalent units. The sale was reported on Form 4 and signed by an attorney-in-fact on 08/18/2025. No derivative transactions are reported.

Positive

• Transaction executed under a Rule 10b5-1 plan, demonstrating pre-established trading procedures and regulatory compliance
• Filing discloses inclusion of unvested RSUs and dividend-equivalent units in the beneficial ownership total, improving transparency
• Small, routine sale (1,000 shares) relative to total holdings reduces likelihood of material impact

Negative

• Insider sale reduces direct shareholdings, which some investors may view negatively even if small
• Form does not state pro rata percentage ownership, so relative stake change must be inferred from disclosed share count

Insights

Securities Compliance Analyst

TL;DR: Routine insider sale executed under a pre-established 10b5-1 plan; disclosure aligns with Section 16 reporting requirements.

The transaction is a straightforward disposition of 1,000 Atkore shares at $59.37, executed pursuant to a 10b5-1 plan adopted February 6, 2025, which provides affirmative defense to insider trading claims. The Form 4 discloses the reporting person's total beneficial ownership of 31,872.8353 shares including unvested RSUs and dividend equivalents, improving transparency about economic exposure. No options, warrants, or other derivatives were reported, and the filing was timely signed by an attorney-in-fact.

Corporate Governance Expert

TL;DR: Governance practice appears compliant; insider used a documented trading plan for a modest sale, suggesting routine portfolio management.

The sale size (1,000 shares) is small relative to aggregate holdings and was processed under an established 10b5-1 plan, reducing regulatory concerns. Inclusion of unvested RSUs and dividend-equivalent units in the beneficial ownership figure is properly noted, clarifying the composition of holdings. The document contains no indications of material governance issues, insider conflicts, or unusual timing around material announcements.

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).

X

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)
08/15/2025

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	08/15/2025		S(1)		1,000	D	$59.37	31,872.8353(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. The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 6, 2025.

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	08/18/2025
	** 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 did ATKR insider Mark F. Lamps report on Form 4?

The Form 4 reports a sale of 1,000 shares of Atkore common stock on 08/15/2025 at $59.37 per share.

Was the sale by the ATKR insider part of a planned program?

Yes. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 6, 2025.

How many Atkore shares does the reporting person beneficially own after the transaction?

The filing reports beneficial ownership of 31,872.8353 shares, which includes unvested RSUs and accrued dividend-equivalent units.

Were any derivative securities reported in this Form 4 for ATKR?

No. The filing shows no derivative transactions—only the non-derivative sale of common stock is reported.

Who signed the Form 4 for Mark F. Lamps?

The Form 4 was signed by Daniel S. Kelly, Attorney-in-Fact for Mark F. Lamps on 08/18/2025.