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$ATKR

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Insider Transactions

Insider Transaction Summary

Investment Associates VIII, Ltd. CD&R

30,460,377 shares

Net: 0 B/S: -

John Patrick Williamson

228,385 shares

Net: 0 B/S: -

Michael J Schulte

146,620 shares

Net: 0 B/S: -

William E Jr. Waltz

136,139 shares

Net: +31,992 B/S: ∞

JAMES A MALLAK

74,355 shares

Net: 0 B/S: -

John W Pregenzer

61,237 shares

Net: +9,751 B/S: ∞

Kevin P Fitzpatrick

48,008 shares

Net: 0 B/S: -

Peter J Lariviere

37,230 shares

Net: 0 B/S: -

Mark F. Lamps

36,049 shares

Net: +3,176 B/S: 2.74

LeAngela W. Lowe

35,986 shares

Net: +5,091 B/S: ∞

Daniel S Kelly

32,589 shares

Net: +4,966 B/S: ∞

SCOTT H MUSE

32,522 shares

Net: +2,684 B/S: ∞

David Paul Johnson

32,503 shares

Net: 0 B/S: -

Jeri L Isbell

30,448 shares

Net: +2,706 B/S: ∞

A Mark Zeffiro

23,891 shares

Net: +2,486 B/S: ∞

William VanArsdale

23,342 shares

Net: 0 B/S: -

MICHAEL V SCHROCK

22,170 shares

Net: +2,306 B/S: ∞

Justin A Kershaw

21,409 shares

Net: +2,563 B/S: ∞

BETTY R. WYNN

20,557 shares

Net: +2,421 B/S: ∞

Wilbert W Jr James

20,362 shares

Net: +2,540 B/S: ∞

John Michael Deitzer

18,827 shares

Net: +8,408 B/S: ∞

Betty R. Johnson

15,114 shares

Net: 0 B/S: -

Barbara Joanne Edwards

6,061 shares

Net: +2,332 B/S: ∞

James William Alvey

5,430 shares

Net: +426 B/S: ∞

Franklin S. Jr. Edmonds

2,822 shares

Net: +2,822 B/S: ∞

Associates VIII, Ltd. CD&R

0 shares

Net: 0 B/S: -

Nathan K Sleeper

0 shares

Net: 0 B/S: -

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
Investment Associates VIII, Ltd. CD&R	30,460,377	0	-
John Patrick Williamson	228,385	0	-
Michael J Schulte	146,620	0	-
William E Jr. Waltz	136,139	+31,992	∞
JAMES A MALLAK	74,355	0	-
John W Pregenzer	61,237	+9,751	∞
Kevin P Fitzpatrick	48,008	0	-
Peter J Lariviere	37,230	0	-
Mark F. Lamps	36,049	+3,176	2.74
LeAngela W. Lowe	35,986	+5,091	∞
Daniel S Kelly	32,589	+4,966	∞
SCOTT H MUSE	32,522	+2,684	∞
David Paul Johnson	32,503	0	-
Jeri L Isbell	30,448	+2,706	∞
A Mark Zeffiro	23,891	+2,486	∞
William VanArsdale	23,342	0	-
MICHAEL V SCHROCK	22,170	+2,306	∞
Justin A Kershaw	21,409	+2,563	∞
BETTY R. WYNN	20,557	+2,421	∞
Wilbert W Jr James	20,362	+2,540	∞
John Michael Deitzer	18,827	+8,408	∞
Betty R. Johnson	15,114	0	-
Barbara Joanne Edwards	6,061	+2,332	∞
James William Alvey	5,430	+426	∞
Franklin S. Jr. Edmonds	2,822	+2,822	∞
Associates VIII, Ltd. CD&R	0	0	-
Nathan K Sleeper	0	0	-

Individual Transactions

February 27, 2026

John Michael Deitzer

Grant/Award Acquisition

Change: +68

Price: $0.00

Shares: 18,827

Value: +$0

James William Alvey

Grant/Award Acquisition

Change: +13

Price: $0.00

Shares: 5,430

Value: +$0

Franklin S. Jr. Edmonds

Grant/Award Acquisition

Change: +14

Price: $0.00

Shares: 2,822

Value: +$0

John W Pregenzer

Grant/Award Acquisition

Change: +118

Price: $0.00

Shares: 61,237

Value: +$0

LeAngela W. Lowe

Grant/Award Acquisition

Change: +52

Price: $0.00

Shares: 35,986

Value: +$0

Mark F. Lamps

Grant/Award Acquisition

Change: +68

Price: $0.00

Shares: 36,049

Value: +$0

Barbara Joanne Edwards

Grant/Award Acquisition

Change: +26

Price: $0.00

Shares: 6,061

Value: +$0

Justin A Kershaw

Grant/Award Acquisition

Change: +94

Price: $0.00

Shares: 21,409

Value: +$0

Wilbert W Jr James

Grant/Award Acquisition

Change: +87

Price: $0.00

Shares: 20,362

Value: +$0

William E Jr. Waltz

Grant/Award Acquisition

Change: +346

Price: $0.00

Shares: 136,139

Value: +$0

Daniel S Kelly

Grant/Award Acquisition

Change: +52

Price: $0.00

Shares: 32,589

Value: +$0

A Mark Zeffiro

Grant/Award Acquisition

Change: +69

Price: $0.00

Shares: 23,891

Value: +$0

BETTY R. WYNN

Grant/Award Acquisition

Change: +39

Price: $0.00

Shares: 20,557

Value: +$0

SCOTT H MUSE

Grant/Award Acquisition

Change: +136

Price: $0.00

Shares: 32,522

Value: +$0

Jeri L Isbell

Grant/Award Acquisition

Change: +140

Price: $0.00

Shares: 30,448

Value: +$0

MICHAEL V SCHROCK

Grant/Award Acquisition

Change: +12

Price: $0.00

Shares: 22,170

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
John Michael Deitzer	Mar 03	Grant/Award Acquisition (A) Compensation/Award	18,827	+68	$0.00	+$0
James William Alvey	Mar 03	Grant/Award Acquisition (A) Compensation/Award	5,430	+13	$0.00	+$0
Franklin S. Jr. Edmonds	Mar 03	Grant/Award Acquisition (A) Compensation/Award	2,822	+14	$0.00	+$0
John W Pregenzer	Mar 03	Grant/Award Acquisition (A) Compensation/Award	61,237	+118	$0.00	+$0
LeAngela W. Lowe	Mar 03	Grant/Award Acquisition (A) Compensation/Award	35,986	+52	$0.00	+$0
Mark F. Lamps	Mar 03	Grant/Award Acquisition (A) Compensation/Award	36,049	+68	$0.00	+$0
Barbara Joanne Edwards	Mar 03	Grant/Award Acquisition (A) Compensation/Award	6,061	+26	$0.00	+$0
Justin A Kershaw	Mar 03	Grant/Award Acquisition (A) Compensation/Award	21,409	+94	$0.00	+$0
Wilbert W Jr James	Mar 03	Grant/Award Acquisition (A) Compensation/Award	20,362	+87	$0.00	+$0
William E Jr. Waltz	Mar 03	Grant/Award Acquisition (A) Compensation/Award	136,139	+346	$0.00	+$0
Daniel S Kelly	Mar 03	Grant/Award Acquisition (A) Compensation/Award	32,589	+52	$0.00	+$0
A Mark Zeffiro	Mar 03	Grant/Award Acquisition (A) Compensation/Award	23,891	+69	$0.00	+$0
BETTY R. WYNN	Mar 03	Grant/Award Acquisition (A) Compensation/Award	20,557	+39	$0.00	+$0
SCOTT H MUSE	Mar 03	Grant/Award Acquisition (A) Compensation/Award	32,522	+136	$0.00	+$0
Jeri L Isbell	Mar 03	Grant/Award Acquisition (A) Compensation/Award	30,448	+140	$0.00	+$0
MICHAEL V SCHROCK	Mar 03	Grant/Award Acquisition (A) Compensation/Award	22,170	+12	$0.00	+$0

February 17, 2026

Mark F. Lamps

Open Market Sale

Change: -1,000

Price: $65.78

Shares: 35,982

Value: -$65,780

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Mark F. Lamps	Feb 17	Open Market Sale (S) Market Sale	35,982	-1,000	$65.78	-$65,780

February 02, 2026

John W Pregenzer

Tax Payment

Change: -1,164

Price: $69.45

Shares: 61,119

Value: -$80,839

Insider	Filing Date	Transaction	Shares	Change	Price	Value
John W Pregenzer	Feb 03	Tax Payment (F) Tax Payment	61,119	-1,164	$69.45	-$80,839

January 29, 2026

Franklin S. Jr. Edmonds

Grant/Award Acquisition

Change: +2,808

Price: $0.00

Shares: 2,808

Value: +$0

Barbara Joanne Edwards

Grant/Award Acquisition

Change: +2,275

Price: $0.00

Shares: 6,035

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Franklin S. Jr. Edmonds	Feb 02	Grant/Award Acquisition (A) Compensation/Award	2,808	+2,808	$0.00	+$0
Barbara Joanne Edwards	Feb 02	Grant/Award Acquisition (A) Compensation/Award	6,035	+2,275	$0.00	+$0