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$STX

$912.13 -$28.56 (3.04%)

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Valuations P Insider Transactions P Congressional Trades P

Insider Transactions

Insider Transaction Summary

Holdings, L.P. ValueAct

23,928,331 shares

Net: 0 B/S: -

Partners I, LLC VA

13,437,070 shares

Net: 0 B/S: -

Capital Master Fund, L.P. ValueAct

946,100 shares

Net: 0 B/S: -

WILLIAM D MOSLEY

375,491 shares

Net: +232,771 B/S: 4.16

STEPHEN J LUCZO

225,941 shares

Net: 0 B/S: -

MALLEY PATRICK J O

136,793 shares

Net: 0 B/S: -

KENNETH M MASSARONI

108,433 shares

Net: 0 B/S: -

Gianluca Romano

66,182 shares

Net: +108,493 B/S: 49.85

MARK RE

40,470 shares

Net: 0 B/S: -

Ravi Naik

38,857 shares

Net: 0 B/S: -

Albert A Pimentel

38,226 shares

Net: 0 B/S: -

Jeffrey D. Nygaard

35,969 shares

Net: 0 B/S: -

CHONG SUP PARK

32,527 shares

Net: 0 B/S: -

DOUGLAS J DEHAAN

32,517 shares

Net: 0 B/S: -

KATHERINE SCHUELKE

29,063 shares

Net: 0 B/S: -

Kristen M Onken

23,729 shares

Net: 0 B/S: -

MEI WEI CHENG

20,047 shares

Net: 0 B/S: -

John Christopher Morris

17,580 shares

Net: +33,364 B/S: 16.68

Regan J MacPherson

16,702 shares

Net: 0 B/S: -

DAVID H JR MORTON

16,076 shares

Net: 0 B/S: -

PHILIP G BRACE

16,069 shares

Net: 0 B/S: -

Jeffrey D. Fochtman

14,736 shares

Net: 0 B/S: -

JUDY BRUNER

14,314 shares

Net: +2,046 B/S: ∞

Stephanie Tilenius

12,244 shares

Net: -1,113 B/S: 0.9

Ban Seng Teh

11,248 shares

Net: +28,459 B/S: 1.58

JAMES J MURPHY

10,569 shares

Net: 0 B/S: -

Geraldine Hottier-Fayon

8,216 shares

Net: 0 B/S: -

Shankar Arumugavelu

7,626 shares

Net: -1,374 B/S: 0.85

ROBERT A BRUGGEWORTH

6,591 shares

Net: 0 B/S: -

WILLIAM T III COLEMAN

5,847 shares

Net: 0 B/S: -

FRANK BIONDI

5,399 shares

Net: 0 B/S: -

Yolanda Lee Conyers

4,851 shares

Net: +2,052 B/S: 2.71

Kathryn R. Scolnick

4,256 shares

Net: 0 B/S: -

Holdings GP, LLC ValueAct

3,803 shares

Net: 0 B/S: -

MICHAEL R CANNON

1,868 shares

Net: +4,472 B/S: ∞

Mark Adams

1,580 shares

Net: +3,626 B/S: ∞

Dylan G. Haggart

1,580 shares

Net: +3,626 B/S: ∞

PRAT BHATT

1,580 shares

Net: +3,626 B/S: ∞

RICHARD L CLEMMER

1,580 shares

Net: +3,626 B/S: ∞

Kian Fatt Chong

1,259 shares

Net: +14,025 B/S: 2.09

James CI Lee

1,021 shares

Net: +16,625 B/S: 8.12

Thomas A Szlosek

357 shares

Net: +2,407 B/S: ∞

Jay L Geldmacher

223 shares

Net: -1,049 B/S: 0.91

EDWARD J ZANDER

0 shares

Net: 0 B/S: -

GREGORIO REYES

0 shares

Net: 0 B/S: -

Dambisa F Moyo

0 shares

Net: 0 B/S: -

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
Holdings, L.P. ValueAct	23,928,331	0	-
Partners I, LLC VA	13,437,070	0	-
Capital Master Fund, L.P. ValueAct	946,100	0	-
WILLIAM D MOSLEY	375,491	+232,771	4.16
STEPHEN J LUCZO	225,941	0	-
MALLEY PATRICK J O	136,793	0	-
KENNETH M MASSARONI	108,433	0	-
Gianluca Romano	66,182	+108,493	49.85
MARK RE	40,470	0	-
Ravi Naik	38,857	0	-
Albert A Pimentel	38,226	0	-
Jeffrey D. Nygaard	35,969	0	-
CHONG SUP PARK	32,527	0	-
DOUGLAS J DEHAAN	32,517	0	-
KATHERINE SCHUELKE	29,063	0	-
Kristen M Onken	23,729	0	-
MEI WEI CHENG	20,047	0	-
John Christopher Morris	17,580	+33,364	16.68
Regan J MacPherson	16,702	0	-
DAVID H JR MORTON	16,076	0	-
PHILIP G BRACE	16,069	0	-
Jeffrey D. Fochtman	14,736	0	-
JUDY BRUNER	14,314	+2,046	∞
Stephanie Tilenius	12,244	-1,113	0.9
Ban Seng Teh	11,248	+28,459	1.58
JAMES J MURPHY	10,569	0	-
Geraldine Hottier-Fayon	8,216	0	-
Shankar Arumugavelu	7,626	-1,374	0.85
ROBERT A BRUGGEWORTH	6,591	0	-
WILLIAM T III COLEMAN	5,847	0	-
FRANK BIONDI	5,399	0	-
Yolanda Lee Conyers	4,851	+2,052	2.71
Kathryn R. Scolnick	4,256	0	-
Holdings GP, LLC ValueAct	3,803	0	-
MICHAEL R CANNON	1,868	+4,472	∞
Mark Adams	1,580	+3,626	∞
Dylan G. Haggart	1,580	+3,626	∞
PRAT BHATT	1,580	+3,626	∞
RICHARD L CLEMMER	1,580	+3,626	∞
Kian Fatt Chong	1,259	+14,025	2.09
James CI Lee	1,021	+16,625	8.12
Thomas A Szlosek	357	+2,407	∞
Jay L Geldmacher	223	-1,049	0.91
EDWARD J ZANDER	0	0	-
GREGORIO REYES	0	0	-
Dambisa F Moyo	0	0	-

Individual Transactions

April 22, 2026

James CI Lee

Option Exercise/Conversion

Change: +1,237

Price: $0.00

Shares: 1,561

Value: +$0

James CI Lee

Tax Payment

Change: -540

Price: $579.88

Shares: 1,021

Value: -$313,135

Insider	Filing Date	Transaction	Shares	Change	Price	Value
James CI Lee	Apr 23	Option Exercise/Conversion (M) Compensation/Award	1,561	+1,237	$0.00	+$0
James CI Lee	Apr 23	Tax Payment (F) Tax Payment	1,021	-540	$579.88	-$313,135

April 01, 2026

WILLIAM D MOSLEY

Open Market Sale

Change: -100

Price: $399.05

Shares: 375,491

Value: -$39,905

Insider	Filing Date	Transaction	Shares	Change	Price	Value
WILLIAM D MOSLEY	Apr 02	Open Market Sale (S) Market Sale	375,491	-100	$399.05	-$39,905

March 19, 2026

WILLIAM D MOSLEY

Open Market Sale

Change: -24,584

Price: $406.77

Shares: 375,591

Value: -$10,000,033

Insider	Filing Date	Transaction	Shares	Change	Price	Value
WILLIAM D MOSLEY	Mar 23	Open Market Sale (S) Market Sale	375,591	-24,584	$406.77	-$10,000,033

March 13, 2026

John Christopher Morris

Open Market Sale

Change: -112

Price: $377.44

Shares: 17,580

Value: -$42,273

Insider	Filing Date	Transaction	Shares	Change	Price	Value
John Christopher Morris	Mar 16	Open Market Sale (S) Market Sale	17,580	-112	$377.44	-$42,273

March 11, 2026

John Christopher Morris

Tax Payment

Change: -430

Price: $385.97

Shares: 17,692

Value: -$165,967

John Christopher Morris

Option Exercise/Conversion

Change: +942

Price: $0.00

Shares: 18,122

Value: +$0

WILLIAM D MOSLEY

Option Exercise/Conversion

Change: +3,319

Price: $0.00

Shares: 401,833

Value: +$0

WILLIAM D MOSLEY

Tax Payment

Change: -1,658

Price: $385.97

Shares: 400,175

Value: -$639,938

Ban Seng Teh

Option Exercise/Conversion

Change: +989

Price: $0.00

Shares: 11,248

Value: +$0

Gianluca Romano

Option Exercise/Conversion

Change: +1,695

Price: $0.00

Shares: 66,182

Value: +$0

Gianluca Romano

Tax Payment

Change: -847

Price: $385.97

Shares: 65,335

Value: -$326,916

Kian Fatt Chong

Option Exercise/Conversion

Change: +678

Price: $0.00

Shares: 1,259

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
John Christopher Morris	Mar 12	Tax Payment (F) Tax Payment	17,692	-430	$385.97	-$165,967
John Christopher Morris	Mar 12	Option Exercise/Conversion (M) Compensation/Award	18,122	+942	$0.00	+$0
WILLIAM D MOSLEY	Mar 12	Option Exercise/Conversion (M) Compensation/Award	401,833	+3,319	$0.00	+$0
WILLIAM D MOSLEY	Mar 12	Tax Payment (F) Tax Payment	400,175	-1,658	$385.97	-$639,938
Ban Seng Teh	Mar 12	Option Exercise/Conversion (M) Compensation/Award	11,248	+989	$0.00	+$0
Gianluca Romano	Mar 12	Option Exercise/Conversion (M) Compensation/Award	66,182	+1,695	$0.00	+$0
Gianluca Romano	Mar 12	Tax Payment (F) Tax Payment	65,335	-847	$385.97	-$326,916
Kian Fatt Chong	Mar 12	Option Exercise/Conversion (M) Compensation/Award	1,259	+678	$0.00	+$0

March 09, 2026

John Christopher Morris

Option Exercise/Conversion

Change: +499

Price: $0.00

Shares: 17,065

Value: +$0

John Christopher Morris

Tax Payment

Change: -228

Price: $374.33

Shares: 16,837

Value: -$85,347

Gianluca Romano

Option Exercise/Conversion

Change: +958

Price: $0.00

Shares: 64,208

Value: +$0

Gianluca Romano

Tax Payment

Change: -479

Price: $374.33

Shares: 63,729

Value: -$179,304

WILLIAM D MOSLEY

Option Exercise/Conversion

Change: +2,815

Price: $0.00

Shares: 398,712

Value: +$0

WILLIAM D MOSLEY

Tax Payment

Change: -1,406

Price: $374.33

Shares: 397,306

Value: -$526,307

Kian Fatt Chong

Option Exercise/Conversion

Change: +202

Price: $0.00

Shares: 202

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
John Christopher Morris	Mar 11	Option Exercise/Conversion (M) Compensation/Award	17,065	+499	$0.00	+$0
John Christopher Morris	Mar 11	Tax Payment (F) Tax Payment	16,837	-228	$374.33	-$85,347
Gianluca Romano	Mar 11	Option Exercise/Conversion (M) Compensation/Award	64,208	+958	$0.00	+$0
Gianluca Romano	Mar 11	Tax Payment (F) Tax Payment	63,729	-479	$374.33	-$179,304
WILLIAM D MOSLEY	Mar 11	Option Exercise/Conversion (M) Compensation/Award	398,712	+2,815	$0.00	+$0
WILLIAM D MOSLEY	Mar 11	Tax Payment (F) Tax Payment	397,306	-1,406	$374.33	-$526,307
Kian Fatt Chong	Mar 11	Option Exercise/Conversion (M) Compensation/Award	202	+202	$0.00	+$0