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$NDSN

$298.47 +$0.69 (0.23%)

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Insider Transactions

Insider Transaction Summary

Michael F Hilton

171,724 shares

Net: 0 B/S: -

SUNDARAM NAGARAJAN

64,824 shares

Net: +7,177 B/S: 1.22

ROBERT E VEILLETTE

53,252 shares

Net: 0 B/S: -

JOHN J KEANE

53,214 shares

Net: 0 B/S: -

JOSEPH P KEITHLEY

51,497 shares

Net: 0 B/S: -

GREGORY A THAXTON

50,260 shares

Net: 0 B/S: -

James E DeVries

50,033 shares

Net: -1,137 B/S: 1.1

DOUGLAS C BLOOMFIELD

43,957 shares

Net: 0 B/S: -

RANDY W CARSON

29,596 shares

Net: 0 B/S: -

MICHAEL J MERRIMAN

29,515 shares

Net: +822 B/S: ∞

SHELLY PEET

24,295 shares

Net: 0 B/S: -

VICTOR L JR RICHEY

20,968 shares

Net: +822 B/S: ∞

FRANK M JAEHNERT

20,311 shares

Net: +822 B/S: ∞

GREGORY P MERK

20,177 shares

Net: 0 B/S: -

LEE C BANKS

17,252 shares

Net: 0 B/S: -

MARY G PUMA

16,835 shares

Net: 0 B/S: -

Jeffrey A Pembroke

16,166 shares

Net: 0 B/S: -

Joseph Stockunas

13,848 shares

Net: 0 B/S: -

Joseph P Kelley

13,563 shares

Net: +20,119 B/S: 5.59

Arthur L Jr George

10,435 shares

Net: 0 B/S: -

Srinivas Subramanian

9,507 shares

Net: +1,294 B/S: 1.81

JENNIFER L MCDONOUGH

6,606 shares

Net: +1,731 B/S: ∞

GINGER M JONES

6,280 shares

Net: +822 B/S: ∞

John A DeFord

5,802 shares

Net: +1,000 B/S: ∞

Sarah Siddiqui

5,058 shares

Net: +1,083 B/S: ∞

Daniel Roy Hopgood

4,758 shares

Net: +2,164 B/S: ∞

Stephen Lovass

4,726 shares

Net: 0 B/S: -

Jennifer A Parmentier

4,304 shares

Net: +822 B/S: ∞

Joseph M Rutledge

3,092 shares

Net: +217 B/S: ∞

CHRISTOPHER L MAPES

2,975 shares

Net: +1,018 B/S: ∞

Milton Mayo Morris

2,656 shares

Net: +312 B/S: 1.61

ANNETTE K CLAYTON

2,098 shares

Net: +1,200 B/S: ∞

Justin E Hall

1,515 shares

Net: +318 B/S: 1.58

Gina A. Beredo

1,100 shares

Net: 0 B/S: -

Stephen F Shamrock

391 shares

Net: 0 B/S: -

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
Michael F Hilton	171,724	0	-
SUNDARAM NAGARAJAN	64,824	+7,177	1.22
ROBERT E VEILLETTE	53,252	0	-
JOHN J KEANE	53,214	0	-
JOSEPH P KEITHLEY	51,497	0	-
GREGORY A THAXTON	50,260	0	-
James E DeVries	50,033	-1,137	1.1
DOUGLAS C BLOOMFIELD	43,957	0	-
RANDY W CARSON	29,596	0	-
MICHAEL J MERRIMAN	29,515	+822	∞
SHELLY PEET	24,295	0	-
VICTOR L JR RICHEY	20,968	+822	∞
FRANK M JAEHNERT	20,311	+822	∞
GREGORY P MERK	20,177	0	-
LEE C BANKS	17,252	0	-
MARY G PUMA	16,835	0	-
Jeffrey A Pembroke	16,166	0	-
Joseph Stockunas	13,848	0	-
Joseph P Kelley	13,563	+20,119	5.59
Arthur L Jr George	10,435	0	-
Srinivas Subramanian	9,507	+1,294	1.81
JENNIFER L MCDONOUGH	6,606	+1,731	∞
GINGER M JONES	6,280	+822	∞
John A DeFord	5,802	+1,000	∞
Sarah Siddiqui	5,058	+1,083	∞
Daniel Roy Hopgood	4,758	+2,164	∞
Stephen Lovass	4,726	0	-
Jennifer A Parmentier	4,304	+822	∞
Joseph M Rutledge	3,092	+217	∞
CHRISTOPHER L MAPES	2,975	+1,018	∞
Milton Mayo Morris	2,656	+312	1.61
ANNETTE K CLAYTON	2,098	+1,200	∞
Justin E Hall	1,515	+318	1.58
Gina A. Beredo	1,100	0	-
Stephen F Shamrock	391	0	-

Individual Transactions

June 01, 2026

Daniel Roy Hopgood

Tax Payment

Change: -148

Price: $281.31

Shares: 4,758

Value: -$41,633

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Daniel Roy Hopgood	Jun 02	Tax Payment (F) Tax Payment	4,758	-148	$281.31	-$41,633

May 01, 2026

ANNETTE K CLAYTON

Grant/Award Acquisition

Change: +270

Price: $283.20

Shares: 2,098

Value: +$76,464

Insider	Filing Date	Transaction	Shares	Change	Price	Value
ANNETTE K CLAYTON	May 08	Grant/Award Acquisition (A) Compensation/Award	2,098	+270	$283.20	+$76,464

April 30, 2026

John A DeFord

Grant/Award Acquisition

Change: +87

Price: $288.45

Shares: 5,802

Value: +$25,095

CHRISTOPHER L MAPES

Grant/Award Acquisition

Change: +43

Price: $288.45

Shares: 2,975

Value: +$12,403

Insider	Filing Date	Transaction	Shares	Change	Price	Value
John A DeFord	May 04	Grant/Award Acquisition (A) Compensation/Award	5,802	+87	$288.45	+$25,095
CHRISTOPHER L MAPES	May 04	Grant/Award Acquisition (A) Compensation/Award	2,975	+43	$288.45	+$12,403

April 17, 2026

Srinivas Subramanian

Open Market Sale

Change: -1,900

Price: $280.00

Shares: 7,607

Value: -$532,000

Srinivas Subramanian

Option Exercise/Conversion

Change: +1,900

Price: $107.65

Shares: 9,507

Value: +$204,535

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Srinivas Subramanian	Apr 20	Open Market Sale (S) Market Sale	7,607	-1,900	$280.00	-$532,000
Srinivas Subramanian	Apr 20	Option Exercise/Conversion (M) Compensation/Award	9,507	+1,900	$107.65	+$204,535

April 16, 2026

James E DeVries

Tax Payment

Change: -71

Price: $275.28

Shares: 50,033

Value: -$19,544

Insider	Filing Date	Transaction	Shares	Change	Price	Value
James E DeVries	Apr 20	Tax Payment (F) Tax Payment	50,033	-71	$275.28	-$19,544

April 15, 2026

Milton Mayo Morris

Open Market Sale

Change: -245

Price: $273.87

Shares: 2,656

Value: -$67,098

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Milton Mayo Morris	Apr 16	Open Market Sale (S) Market Sale	2,656	-245	$273.87	-$67,098

April 08, 2026

Justin E Hall

Open Market Sale

Change: -716

Price: $275.82

Shares: 1,515

Value: -$197,487

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Justin E Hall	Apr 09	Open Market Sale (S) Market Sale	1,515	-716	$275.82	-$197,487

February 27, 2026

Sarah Siddiqui

Tax Payment

Change: -30

Price: $293.44

Shares: 5,058

Value: -$8,803

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Sarah Siddiqui	Mar 02	Tax Payment (F) Tax Payment	5,058	-30	$293.44	-$8,803

February 24, 2026

SUNDARAM NAGARAJAN

Option Exercise/Conversion

Change: +41,800

Price: $165.21

Shares: 106,624

Value: +$6,905,778

Joseph P Kelley

Open Market Sale

Change: -1

Price: $291.49

Shares: 7,558

Value: -$291

Joseph P Kelley

Option Exercise/Conversion

Change: +6,295

Price: $189.72

Shares: 13,563

Value: +$1,194,287

SUNDARAM NAGARAJAN

Open Market Sale

Change: -41,800

Price: $293.26

Shares: 64,824

Value: -$12,258,268

Insider	Filing Date	Transaction	Shares	Change	Price	Value
SUNDARAM NAGARAJAN	Feb 25	Option Exercise/Conversion (M) Compensation/Award	106,624	+41,800	$165.21	+$6,905,778
Joseph P Kelley	Feb 25	Open Market Sale (S) Market Sale	7,558	-1	$291.49	-$291
Joseph P Kelley	Feb 25	Option Exercise/Conversion (M) Compensation/Award	13,563	+6,295	$189.72	+$1,194,287
SUNDARAM NAGARAJAN	Feb 25	Open Market Sale (S) Market Sale	64,824	-41,800	$293.26	-$12,258,268

February 23, 2026

Joseph P Kelley

Open Market Sale

Change: -95

Price: $289.11

Shares: 9,483

Value: -$27,465

Joseph P Kelley

Option Exercise/Conversion

Change: +15,022

Price: $189.72

Shares: 22,581

Value: +$2,849,973

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Joseph P Kelley	Feb 25	Open Market Sale (S) Market Sale	9,483	-95	$289.11	-$27,465
Joseph P Kelley	Feb 25	Option Exercise/Conversion (M) Compensation/Award	22,581	+15,022	$189.72	+$2,849,973

January 30, 2026

John A DeFord

Grant/Award Acquisition

Change: +91

Price: $274.53

Shares: 5,697

Value: +$24,982

CHRISTOPHER L MAPES

Grant/Award Acquisition

Change: +45

Price: $274.53

Shares: 2,923

Value: +$12,353

Insider	Filing Date	Transaction	Shares	Change	Price	Value
John A DeFord	Feb 03	Grant/Award Acquisition (A) Compensation/Award	5,697	+91	$274.53	+$24,982
CHRISTOPHER L MAPES	Feb 03	Grant/Award Acquisition (A) Compensation/Award	2,923	+45	$274.53	+$12,353

January 05, 2026

Justin E Hall

Tax Payment

Change: -63

Price: $245.89

Shares: 2,231

Value: -$15,491

Justin E Hall

Grant/Award Acquisition

Change: +173

Price: $245.89

Shares: 2,294

Value: +$42,538

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Justin E Hall	Jan 07	Tax Payment (F) Tax Payment	2,231	-63	$245.89	-$15,491
Justin E Hall	Jan 07	Grant/Award Acquisition (A) Compensation/Award	2,294	+173	$245.89	+$42,538