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$NPK

$128.34 +$0.50 (0.39%)

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Insider Transactions

Insider Transaction Summary

MARYJO R COHEN

231,079 shares

Net: 0 B/S: -

Douglas J Frederick

9,106 shares

Net: +350 B/S: ∞

RANDY F LIEBLE

5,222 shares

Net: -2,317 B/S: 0.04

Joseph G Stienessen

2,086 shares

Net: +100 B/S: ∞

John Roderick JR MacKenzie

1,813 shares

Net: +265 B/S: ∞

Richard L Jeffers

1,804 shares

Net: 0 B/S: -

Jeffery Alan Morgan

1,716 shares

Net: -215 B/S: ∞

PATRICK J QUINN

1,404 shares

Net: +100 B/S: ∞

SPENCER W AHNEMAN

1,257 shares

Net: 0 B/S: -

RICHARD N CARDOZO

368 shares

Net: 0 B/S: -

David J Peuse

308 shares

Net: -251 B/S: 0.65

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
MARYJO R COHEN	231,079	0	-
Douglas J Frederick	9,106	+350	∞
RANDY F LIEBLE	5,222	-2,317	0.04
Joseph G Stienessen	2,086	+100	∞
John Roderick JR MacKenzie	1,813	+265	∞
Richard L Jeffers	1,804	0	-
Jeffery Alan Morgan	1,716	-215	∞
PATRICK J QUINN	1,404	+100	∞
SPENCER W AHNEMAN	1,257	0	-
RICHARD N CARDOZO	368	0	-
David J Peuse	308	-251	0.65

Individual Transactions

April 30, 2026

Jeffery Alan Morgan

Tax Payment

Change: -349

Price: $139.84

Shares: 1,716

Value: -$48,804

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Jeffery Alan Morgan	May 04	Tax Payment (F) Tax Payment	1,716	-349	$139.84	-$48,804

March 17, 2026

David J Peuse

Open Market Sale

Change: -500

Price: $140.16

Shares: 308

Value: -$70,077

Insider	Filing Date	Transaction	Shares	Change	Price	Value
David J Peuse	Mar 18	Open Market Sale (S) Market Sale	308	-500	$140.16	-$70,077

March 16, 2026

Douglas J Frederick

Tax Payment

Change: -36

Price: $131.58

Shares: 9,106

Value: -$4,736

Jeffery Alan Morgan

Tax Payment

Change: -100

Price: $131.58

Shares: 2,065

Value: -$13,158

David J Peuse

Tax Payment

Change: -78

Price: $131.58

Shares: 1,669

Value: -$10,263

John Roderick JR MacKenzie

Tax Payment

Change: -62

Price: $131.58

Shares: 1,813

Value: -$8,157

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Douglas J Frederick	Mar 16	Tax Payment (F) Tax Payment	9,106	-36	$131.58	-$4,736
Jeffery Alan Morgan	Mar 16	Tax Payment (F) Tax Payment	2,065	-100	$131.58	-$13,158
David J Peuse	Mar 16	Tax Payment (F) Tax Payment	1,669	-78	$131.58	-$10,263
John Roderick JR MacKenzie	Mar 16	Tax Payment (F) Tax Payment	1,813	-62	$131.58	-$8,157

March 11, 2026

RANDY F LIEBLE

Open Market Sale

Change: -2,417

Price: $143.97

Shares: 5,222

Value: -$347,975

Insider	Filing Date	Transaction	Shares	Change	Price	Value
RANDY F LIEBLE	Mar 11	Open Market Sale (S) Market Sale	5,222	-2,417	$143.97	-$347,975

January 02, 2026

RANDY F LIEBLE

Grant/Award Acquisition

Change: +100

Price: $0.00

Shares: 599

Value: +$0

PATRICK J QUINN

Grant/Award Acquisition

Change: +100

Price: $0.00

Shares: 1,404

Value: +$0

Joseph G Stienessen

Grant/Award Acquisition

Change: +100

Price: $0.00

Shares: 2,086

Value: +$0

Douglas J Frederick

Grant/Award Acquisition

Change: +386

Price: $0.00

Shares: 9,142

Value: +$0

Jeffery Alan Morgan

Grant/Award Acquisition

Change: +234

Price: $0.00

Shares: 2,165

Value: +$0

David J Peuse

Grant/Award Acquisition

Change: +327

Price: $0.00

Shares: 1,747

Value: +$0

John Roderick JR MacKenzie

Grant/Award Acquisition

Change: +327

Price: $0.00

Shares: 1,875

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
RANDY F LIEBLE	Jan 02	Grant/Award Acquisition (A) Compensation/Award	599	+100	$0.00	+$0
PATRICK J QUINN	Jan 02	Grant/Award Acquisition (A) Compensation/Award	1,404	+100	$0.00	+$0
Joseph G Stienessen	Jan 02	Grant/Award Acquisition (A) Compensation/Award	2,086	+100	$0.00	+$0
Douglas J Frederick	Jan 05	Grant/Award Acquisition (A) Compensation/Award	9,142	+386	$0.00	+$0
Jeffery Alan Morgan	Jan 05	Grant/Award Acquisition (A) Compensation/Award	2,165	+234	$0.00	+$0
David J Peuse	Jan 05	Grant/Award Acquisition (A) Compensation/Award	1,747	+327	$0.00	+$0
John Roderick JR MacKenzie	Jan 05	Grant/Award Acquisition (A) Compensation/Award	1,875	+327	$0.00	+$0

March 17, 2025

David J Peuse

Tax Payment

Change: -19

Price: $89.01

Shares: 1,420

Value: -$1,691

Jeffery Alan Morgan

Tax Payment

Change: -78

Price: $89.01

Shares: 1,931

Value: -$6,942

Douglas J Frederick

Tax Payment

Change: -96

Price: $89.01

Shares: 8,756

Value: -$8,544

Insider	Filing Date	Transaction	Shares	Change	Price	Value
David J Peuse	Mar 18	Tax Payment (F) Tax Payment	1,420	-19	$89.01	-$1,691
Jeffery Alan Morgan	Mar 18	Tax Payment (F) Tax Payment	1,931	-78	$89.01	-$6,942
Douglas J Frederick	Mar 18	Tax Payment (F) Tax Payment	8,756	-96	$89.01	-$8,544

January 02, 2025

John Roderick JR MacKenzie

Grant/Award Acquisition

Change: +406

Price: $0.00

Shares: 1,548

Value: +$0

David J Peuse

Grant/Award Acquisition

Change: +254

Price: $0.00

Shares: 1,439

Value: +$0

Jeffery Alan Morgan

Grant/Award Acquisition

Change: +254

Price: $0.00

Shares: 2,009

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
John Roderick JR MacKenzie	Jan 03	Grant/Award Acquisition (A) Compensation/Award	1,548	+406	$0.00	+$0
David J Peuse	Jan 03	Grant/Award Acquisition (A) Compensation/Award	1,439	+254	$0.00	+$0
Jeffery Alan Morgan	Jan 03	Grant/Award Acquisition (A) Compensation/Award	2,009	+254	$0.00	+$0