Insider Transactions Reported by 18 Insiders of Atkore Inc.

Symbol: ATKR on NYSE
Location: Harvey, IL

Quick Takeaways

ATKR - Atkore Inc. has 18 insiders with reported activity on this page.
Net insider value flow over the last year: -$259,060.
Recent transaction rows are available for direct filing-level review.

What Changed

Buy value: ; sell value: $259,060.
Net share flow: -4,000.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Source Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Net insider flow leans to selling over the last 12 months. Net value: -$259,060.

Buys

Shares: 0

Insiders: 0

Sells

$259,060

Shares: 4,000

Insiders: 1

Net

-$259,060

Shares: -4,000

Insiders: -1

Window (months)	Sell shares	Buy $	Sell $	Net $
0-3	1,000	$0	$65,780	-$65,780
3-6	1,000	$0	$64,750	-$64,750
6-9	1,000	$0	$59,370	-$59,370
9-12	1,000	$0	$69,160	-$69,160

Atkore Inc. executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
William E. Waltz Jr.	President and CEO, Director	$11,207,878			Mixed	27 Feb 2026
John W. Pregenzer	COO & President, Electrical	$4,290,241			Mixed	27 Feb 2026
William VanArsdale	Director	$3,518,701			Mixed	27 Jan 2022
David Paul Johnson	Vice President and CFO	$3,056,088			Mixed	15 Mar 2024
Mark F. Lamps	Pres. Safety & Infrastructure	$2,525,615	-$259,060	-9.3%	Mixed	27 Feb 2026
LeAngela W. Lowe	VP, Chief HR Officer	$2,521,190			Mixed	27 Feb 2026
Daniel S. Kelly	VP, General Counsel and Sec.	$2,283,195			Mixed	27 Feb 2026
Scott H. Muse	Director	$2,278,507			Mixed	27 Feb 2026
Jeri L. Isbell	Director	$2,133,179			Mixed	27 Feb 2026
A. Mark Zeffiro	Director	$1,673,805			Mixed	27 Feb 2026
Michael V Schrock	Director	$1,553,238			Mixed	27 Feb 2026
Justin A. Kershaw	Director	$1,499,895			Mixed	27 Feb 2026
Betty R. Wynn	Director	$1,440,193			Mixed	27 Feb 2026
Wilbert W. James Jr.	Director	$1,426,530			Mixed	27 Feb 2026
John M. Deitzer	Vp, Cfo	$1,319,053			Mixed	27 Feb 2026
B. Joanne Edwards	Director	$424,631			Mixed	27 Feb 2026
James W. Alvey	Chief Accounting Officer	$380,395			Mixed	27 Feb 2026
Franklin S. Edmonds Jr.	Director	$197,731			Mixed	27 Feb 2026

Top shareholders of Atkore Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
VANGUARD GROUP INC	13F	Company	11%	3,635,940	$229,973,205	—	31 Dec 2025	13F
Gates Capital Management, Inc.	13D/G 13F	Gates Capital Management, L.P. · Company	7.8%	2,628,189	$197,035,329	-$47,746,294	30 Jun 2025	13D/G 13F
BlackRock, Inc.	13F 13D/G	Company	7.3% from 13D/G	2,555,705	$161,648,314	—	31 Dec 2025	13F 13D/G
VANGUARD PORTFOLIO MANAGEMENT LLC	13D/G	Vanguard Portfolio Management	6.3%	2,117,497	$124,742,384	$0	31 Mar 2026	13D/G
VANGUARD CAPITAL MANAGEMENT LLC	13D/G	Vanguard Capital Management	5.2%	1,773,377	$104,470,171	$0	31 Mar 2026	13D/G
FIRST TRUST ADVISORS LP	13F	Company	4.1%	1,385,741	$87,648,118	—	31 Dec 2025	13F
FIRST TRUST PORTFOLIOS LP	13D/G	First Trust Portfolios L.P.	3.9%	1,306,574	$81,974,453	-$26,000,209	30 Sep 2025	13D/G
AMERICAN CENTURY COMPANIES INC	13F	Company	3.7%	1,253,549	$79,286,985	—	31 Dec 2025	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	3.3%	1,130,477	$71,503,482	—	31 Dec 2025	13F
LSV ASSET MANAGEMENT	13F	Company	2.8%	960,450	$60,748,000	—	31 Dec 2025	13F
STATE STREET CORP	13F	Company	2.4%	827,521	$52,340,703	—	31 Dec 2025	13F
Coliseum Capital Management, LLC	13F	Company	2.4%	809,305	$51,188,541	—	31 Dec 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	2.4%	802,214	$50,749,086	—	31 Dec 2025	13F
EARNEST PARTNERS LLC	13F	Company	2.3%	783,738	$49,571,429	—	31 Dec 2025	13F
HARDING LOEVNER LP	13F	Company	2.2%	732,753	$46,349,980	—	31 Dec 2025	13F
Hill City Capital, LP	13F	Company	2.2%	728,206	$46,059,030	—	31 Dec 2025	13F
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	13F	Company	2.1%	704,668	$44,570,251	—	31 Dec 2025	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	1.5%	492,316	$31,138,988	—	31 Dec 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	1.2%	419,685	$26,545,076	—	31 Dec 2025	13F
LONDON CO OF VIRGINIA	13F	Company	1.2%	411,729	$26,042,072	—	31 Dec 2025	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	1.2%	410,971	$25,993,916	—	31 Dec 2025	13F
JPMORGAN CHASE & CO	13F	Company	1.2%	397,146	$25,119,485	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	1.2%	396,507	$25,079,208	—	31 Dec 2025	13F
Jeffrey L. Gendell	13F	Individual	1.1%	387,201	$24,490,464	—	31 Dec 2025	13F
GOLDMAN SACHS GROUP INC	13F	Company	1.1%	383,841	$24,277,952	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	1.1%	363,649	$23,000,802	—	31 Dec 2025	13F
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	13F	Company	1%	351,287	$22,219,137	—	31 Dec 2025	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	1%	345,828	$21,873,621	—	31 Dec 2025	13F
CANADA PENSION PLAN INVESTMENT BOARD	13F	Company	0.97%	329,100	$20,815,575	—	31 Dec 2025	13F
JACOBS LEVY EQUITY MANAGEMENT, INC	13F	Company	0.96%	323,719	$20,475,227	—	31 Dec 2025	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	0.88%	297,000	$18,785,250	—	31 Dec 2025	13F
Swedbank AB	13F	Company	0.88%	296,206	$18,735,030	—	31 Dec 2025	13F
Bank of New York Mellon Corp	13F	Company	0.7%	235,771	$14,912,538	—	31 Dec 2025	13F
BRIDGEWAY CAPITAL MANAGEMENT, LLC	13F	Company	0.69%	231,611	$14,649,396	—	31 Dec 2025	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.65%	219,331	$13,872,686	—	31 Dec 2025	13F
SEI INVESTMENTS CO	13F	Company	0.61%	205,918	$13,024,363	—	31 Dec 2025	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.6%	201,588	$12,750,441	—	31 Dec 2025	13F
Nuveen, LLC	13F	Company	0.57%	193,517	$12,239,951	—	31 Dec 2025	13F
JANE STREET GROUP, LLC	13F	Company	0.57%	193,444	$12,235,333	—	31 Dec 2025	13F
VOLORIDGE INVESTMENT MANAGEMENT, LLC	13F	Company	0.57%	192,810	$12,195,233	—	31 Dec 2025	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.56%	188,262	$11,907,573	—	31 Dec 2025	13F
Pacer Advisors, Inc.	13F	Company	0.53%	178,188	$11,270,391	—	31 Dec 2025	13F
William E. Waltz Jr.	3/4/5	President and CEO, Director	0.47%	159,975	$11,207,878	—	27 Feb 2026	3/4/5
Allspring Global Investments Holdings, LLC	13F	Company	0.48%	162,343	$10,459,759	—	31 Dec 2025	13F
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	13F	Company	0.46%	155,724	$9,849,543	—	31 Dec 2025	13F
FEDERATED HERMES, INC.	13F	Company	0.46%	154,541	$9,774,735	—	31 Dec 2025	13F
CITADEL ADVISORS LLC	13F	Company	0.44%	147,661	$9,339,558	—	31 Dec 2025	13F
DnB Asset Management AS	13F	Company	0.43%	146,184	$9,246,138	—	31 Dec 2025	13F
ExodusPoint Capital Management, LP	13F	Company	0.37%	124,624	$7,882,468	—	31 Dec 2025	13F
D. E. Shaw & Co., Inc.	13F	Company	0.33%	113,145	$7,156,421	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for Atkore Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
Mark F. Lamps	ATKR	Common Stock	Award	0.19%			67.75	36,049	27 Feb 2026	Direct
Jeri L. Isbell	ATKR	Common Stock	Award	0.46%			140	30,448	27 Feb 2026	Direct
Betty R. Wynn	ATKR	Common Stock	Award	0.19%			39.35	20,557	27 Feb 2026	Direct
Justin A. Kershaw	ATKR	Common Stock	Award	0.44%			94.42	21,409	27 Feb 2026	Direct
John W. Pregenzer	ATKR	Common Stock	Award	0.19%			118	61,237	27 Feb 2026	Direct
LeAngela W. Lowe	ATKR	Common Stock	Award	0.14%			51.6	35,986	27 Feb 2026	Direct
A. Mark Zeffiro	ATKR	Common Stock	Award	0.29%			69.31	23,891	27 Feb 2026	Direct
William E. Waltz Jr.	ATKR	Common Stock	Award	0.25%			346	136,139	27 Feb 2026	Direct
Scott H. Muse	ATKR	Common Stock	Award	0.42%			136	32,522	27 Feb 2026	Direct
John M. Deitzer	ATKR	Common Stock	Award	0.36%			67.81	18,827	27 Feb 2026	Direct
Wilbert W. James Jr.	ATKR	Common Stock	Award	0.43%			86.57	20,362	27 Feb 2026	Direct
B. Joanne Edwards	ATKR	Common Stock	Award	0.43%			25.98	6,061	27 Feb 2026	Direct
James W. Alvey	ATKR	Common Stock	Award	0.25%			13.4	5,430	27 Feb 2026	Direct
Michael V Schrock	ATKR	Common Stock	Award	0.05%			11.6	22,170	27 Feb 2026	Direct
Daniel S. Kelly	ATKR	Common Stock	Award	0.16%			52.14	32,589	27 Feb 2026	Direct
Franklin S. Edmonds Jr.	ATKR	Common Stock	Award	0.51%			14.32	2,822	27 Feb 2026	Direct
Mark F. Lamps	ATKR	Common Stock	Sale	-2.7%	$65,780	$65.78	-1,000	35,982	17 Feb 2026	Direct
John W. Pregenzer	ATKR	Common Stock	Tax liability	-1.87%			-1,164	61,119	02 Feb 2026	Direct
Franklin S. Edmonds Jr.	ATKR	Common Stock	Award				2,808	2,808	29 Jan 2026	Direct
B. Joanne Edwards	ATKR	Common Stock	Award	60.5%			2,275	6,035	29 Jan 2026	Direct
Justin A. Kershaw	ATKR	Common Stock	Award	12%			2,275	21,314	29 Jan 2026	Direct
Wilbert W. James Jr.	ATKR	Common Stock	Award	12.6%			2,275	20,275	29 Jan 2026	Direct
A. Mark Zeffiro	ATKR	Common Stock	Award	10.6%			2,275	23,822	29 Jan 2026	Direct
Betty R. Wynn	ATKR	Common Stock	Award	12.5%			2,275	20,517	29 Jan 2026	Direct
Scott H. Muse	ATKR	Common Stock	Award	7.56%			2,275	32,386	29 Jan 2026	Direct
Jeri L. Isbell	ATKR	Common Stock	Award	8.12%			2,275	30,308	29 Jan 2026	Direct
Michael V Schrock	ATKR	Common Stock	Award	11.4%			2,275	22,159	29 Jan 2026	Direct
Betty R. Wynn	ATKR	Common Stock	Award	0.28%			51.29	18,242	17 Dec 2025	Direct
Justin A. Kershaw	ATKR	Common Stock	Award	0.49%			93.1	19,039	17 Dec 2025	Direct
Wilbert W. James Jr.	ATKR	Common Stock	Award	0.48%			85.17	18,000	17 Dec 2025	Direct
Michael V Schrock	ATKR	Common Stock	Award	0.05%			9.44	19,884	17 Dec 2025	Direct
John M. Deitzer	ATKR	Common Stock	Award	0.37%			68.5	18,760	17 Dec 2025	Direct
John W. Pregenzer	ATKR	Common Stock	Award	0.24%			132	55,350	17 Dec 2025	Direct
James W. Alvey	ATKR	Common Stock	Award	0.25%			13.53	5,416	17 Dec 2025	Direct
A. Mark Zeffiro	ATKR	Common Stock	Award	0.32%			67.73	21,547	17 Dec 2025	Direct
LeAngela W. Lowe	ATKR	Common Stock	Award	0.15%			52.12	35,935	17 Dec 2025	Direct
William E. Waltz Jr.	ATKR	Common Stock	Award	0.26%			350	135,793	17 Dec 2025	Direct
Mark F. Lamps	ATKR	Common Stock	Award	0.19%			68.44	36,982	17 Dec 2025	Direct
Scott H. Muse	ATKR	Common Stock	Award	0.44%			131	30,111	17 Dec 2025	Direct
B. Joanne Edwards	ATKR	Common Stock	Award	0.39%			14.53	3,760	17 Dec 2025	Direct
Jeri L. Isbell	ATKR	Common Stock	Award	0.5%			139	28,033	17 Dec 2025	Direct
Daniel S. Kelly	ATKR	Common Stock	Award	0.16%			52.67	32,537	17 Dec 2025	Direct
John M. Deitzer	ATKR	Common Stock	Tax liability	-4.13%			-806	18,691	18 Nov 2025	Direct
James W. Alvey	ATKR	Common Stock	Tax liability	-2.95%			-164	5,403	18 Nov 2025	Direct
William E. Waltz Jr.	ATKR	Common Stock	Tax liability	-3.44%			-4,832	135,444	18 Nov 2025	Direct
John W. Pregenzer	ATKR	Common Stock	Tax liability	-1.63%			-917	55,218	18 Nov 2025	Direct
Mark F. Lamps	ATKR	Common Stock	Tax liability	-2.77%			-1,053	36,913	18 Nov 2025	Direct
LeAngela W. Lowe	ATKR	Common Stock	Tax liability	-1.84%			-674	35,882	18 Nov 2025	Direct
Daniel S. Kelly	ATKR	Common Stock	Tax liability	-2.06%			-683	32,484	18 Nov 2025	Direct
John M. Deitzer	ATKR	Common Stock	Award	90.8%			9,281	19,497	17 Nov 2025	Direct

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