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KLAC

KLA CORP

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2838
SEC CIK
0000319201
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1,546

Last 12 months

Inside the activity.

0 purchase rows · 22 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
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MonthPurchasesSales
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Dec 202501
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May 202603
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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
May 29, 2003 Filed May 30, 2003 19:04 UTC
LAMB MAUREEN LVice President, Finance and
Exercise / conversionCommon Stock 500 $10.63 $5,315.00
Disclosure

SEC source: 0000319201-03-000034 · edgardoc.xml · nonDerivative · entry 3

LAMB MAUREEN L · CIK 0001182170 · Vice President, Finance and

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,338

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 29, 2003 Filed May 30, 2003 19:04 UTC
LAMB MAUREEN LVice President, Finance and
SaleCommon Stock 750 $43.25 $32,437.50
Disclosure

SEC source: 0000319201-03-000034 · edgardoc.xml · nonDerivative · entry 2

LAMB MAUREEN L · CIK 0001182170 · Vice President, Finance and

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,838

Read SEC document
May 29, 2003 Filed May 30, 2003 19:04 UTC
LAMB MAUREEN LVice President, Finance and
Exercise / conversionCommon Stock 750 $10.63 $7,972.50
Disclosure

SEC source: 0000319201-03-000034 · edgardoc.xml · nonDerivative · entry 1

LAMB MAUREEN L · CIK 0001182170 · Vice President, Finance and

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,588

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 28, 2003 Filed May 28, 2003 21:25 UTC
LEVY KENNETHDirector · Chairman of the Board
SaleCommon Stock 100,000 $42.43 $4,243,080.00
Disclosure

SEC source: 0000319201-03-000031 · edgardoc.xml · nonDerivative · entry 1

LEVY KENNETH · CIK 0001186087 · Director · Chairman of the Board

10b5-1 filing: Not disclosed

Ownership: Indirect · KGMW, LP

Disclosed balance after: 438,000

Read SEC document
May 27, 2003 Filed Jun 24, 2003 19:19 UTC Amendment
CAMPAGNA JOHN PETERVice President and Treasurer
Exercise / conversionNon-Qualified Stock Option · Derivative 6,834 $42.30 Strike: $31.81 $289,059.06
Disclosure

SEC source: 0000319201-03-000047 · primary_doc.xml · derivative · entry 6

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,896

Underlying: Common Stock · 6,834 shares

Expires 2010-12-22

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Transaction originally reported on Form 4 Filing of 5/28/2003.

F2 · balance_after: Table II- Derivative Securities Beneficially Owned not originally reported on filing of 5/28/2003 NQ Stock Options, $34.67 Ex.Price, 1/28/2013 Exp., 6500 shares Common Stock, Direct NQ Stock Options, $37.05 Ex.Price, 11/08/2012Exp., 3250 Shares, Common Stock, Direct

Read SEC document
May 27, 2003 Filed Jun 24, 2003 19:19 UTC Amendment
CAMPAGNA JOHN PETERVice President and Treasurer
Exercise / conversionNon-Qualified Stock Option · Derivative 325 $42.30 Strike: $29.31 $13,746.59
Disclosure

SEC source: 0000319201-03-000047 · primary_doc.xml · derivative · entry 5

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,325

Underlying: Common Stock · 325 shares

Expires 2011-10-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Transaction originally reported on Form 4 Filing of 5/28/2003.

Read SEC document
May 27, 2003 Filed Jun 24, 2003 19:19 UTC Amendment
CAMPAGNA JOHN PETERVice President and Treasurer
SaleCommon Stock 325 $42.30 $13,746.59
Disclosure

SEC source: 0000319201-03-000047 · primary_doc.xml · nonDerivative · entry 4

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · balance_after: Transaction originally reported on Form 4 Filing of 5/28/2003.

Read SEC document
May 27, 2003 Filed Jun 24, 2003 19:19 UTC Amendment
CAMPAGNA JOHN PETERVice President and Treasurer
Exercise / conversionCommon Stock 325 $29.31 $9,525.75
Disclosure

SEC source: 0000319201-03-000047 · primary_doc.xml · nonDerivative · entry 3

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 325

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Transaction originally reported on Form 4 Filing of 5/28/2003.

Read SEC document
May 27, 2003 Filed Jun 24, 2003 19:19 UTC Amendment
CAMPAGNA JOHN PETERVice President and Treasurer
SaleCommon Stock 6,834 $42.30 $289,059.06
Disclosure

SEC source: 0000319201-03-000047 · primary_doc.xml · nonDerivative · entry 2

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · balance_after: Transaction originally reported on Form 4 Filing of 5/28/2003.

Read SEC document
May 27, 2003 Filed Jun 24, 2003 19:19 UTC Amendment
CAMPAGNA JOHN PETERVice President and Treasurer
Exercise / conversionCommon Stock 6,834 $31.81 $217,406.63
Disclosure

SEC source: 0000319201-03-000047 · primary_doc.xml · nonDerivative · entry 1

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,834

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Transaction originally reported on Form 4 Filing of 5/28/2003.

Read SEC document
May 27, 2003 Filed May 27, 2003 23:25 UTC
CAMPAGNA JOHN PETERVice President and Treasurer
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 6,834 $42.30 Strike: $31.81 $289,059.06
Disclosure

SEC source: 0000319201-03-000028 · edgardoc.xml · derivative · entry 6

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: Not disclosed

Underlying: Common Stock · 6,834 shares

Expires 2010-12-22

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 27, 2003 Filed May 27, 2003 23:25 UTC
CAMPAGNA JOHN PETERVice President and Treasurer
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 325 $42.30 Strike: $29.31 $13,746.59
Disclosure

SEC source: 0000319201-03-000028 · edgardoc.xml · derivative · entry 5

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: Not disclosed

Underlying: Common Stock · 325 shares

Expires 2011-10-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 27, 2003 Filed May 27, 2003 23:25 UTC
CAMPAGNA JOHN PETERVice President and Treasurer
SaleCommon Stock 325 $42.30 $13,746.59
Disclosure

SEC source: 0000319201-03-000028 · edgardoc.xml · nonDerivative · entry 4

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Read SEC document
May 27, 2003 Filed May 27, 2003 23:25 UTC
CAMPAGNA JOHN PETERVice President and Treasurer
Exercise / conversionCommon Stock 325 $29.31 $9,525.75
Disclosure

SEC source: 0000319201-03-000028 · edgardoc.xml · nonDerivative · entry 3

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 325

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 27, 2003 Filed May 27, 2003 23:25 UTC
CAMPAGNA JOHN PETERVice President and Treasurer
SaleCommon Stock 6,834 $42.30 $289,059.06
Disclosure

SEC source: 0000319201-03-000028 · edgardoc.xml · nonDerivative · entry 2

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Read SEC document
May 27, 2003 Filed May 27, 2003 23:25 UTC
CAMPAGNA JOHN PETERVice President and Treasurer
Exercise / conversionCommon Stock 6,834 $31.81 $217,406.63
Disclosure

SEC source: 0000319201-03-000028 · edgardoc.xml · nonDerivative · entry 1

CAMPAGNA JOHN PETER · CIK 0001182171 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,834

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 22, 2003 Filed Jun 25, 2003 20:40 UTC Amendment
DICKERSON GARY EPresident and COO
GrantNon-Qualified Stock Option · Derivative 1,000 $0.00 Strike: $40.14 $0.00
Disclosure

SEC source: 0000319201-03-000050 · primary_doc.xml · derivative · entry 1

DICKERSON GARY E · CIK 0001183258 · President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,000

Underlying: Common Stock · 1,000 shares

Expires 2013-05-22

F1 · balance_after: Table I-Non-Derivative Securities Beneficially Owned, not originally reported on original Form 4 Filing dated 5/27/2003 Title of Security Shares Beneficially Owned Ownership Form Common Stock 5,280 Direct

F2 · balance_after: Table II-Derivative Securities Beneficially Owned, not reported on original Form 4 Filing of 5/27/2003 Title of Derivative Exercise Price Exp. Date Title Shares Ownership NQSO $10.63 08/31/08 Common Stock 15,721 D NQSO $16.97 10/23/08 Common Stock 46,644 D NQSO $26.25 11/10/10 Common Stock 32,500 D NQSO $29.31 10/02/11 Common Stock 105,000 D NQSO $32.75 04/04/11 Common Stock 32,500 D NQSO $33.75 10/27/09 Common Stock 100,000 D NQSO $34.67 01/28/13 Common Stock 50,000 D NQSO $37.05 11/08/12 Common Stock 25,000 D NQSO $44.6875 08/11/10 Common Stock 23,415 D NQSO $44.6875 08/13/10 Common Stock 41,585 D

Read SEC document
May 22, 2003 Filed Jun 25, 2003 21:51 UTC Amendment
FORTINO DENNIS JExecutive Vice President
GrantNon-Qualified Stock Option · Derivative 1,000 $0.00 Strike: $40.14 $0.00
Disclosure

SEC source: 0000319201-03-000051 · primary_doc.xml · derivative · entry 1

FORTINO DENNIS J · CIK 0001186085 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,000

Underlying: Common Stock · 1,000 shares

Expires 2013-05-22

F1 · balance_after: Transaction Originally Reported on 5/27/2003 Form 4 Filing

F2 · balance_after: Table I Non-Derivative Securities Beneficially Owned, not reported on original Form 4 Filing Title of Security Amount of Securities Ownership Form Common Stock 4,713 Direct

F3 · balance_after: Table II-Derivative Securities Beneficially Owned, not reported on original Form 4 Title of Derivative Exercise Price Expiration Title Shares Ownership NQSO $10.63 08/31/08 Common Stock 4,667 Direct NQSO $26.25 11/10/10 Common Stock 15,750 Direct NQSO $29.31 10/02/11 Common Stock 45,000 Direct NQSO $32.75 04/04/11 Common Stock 22,500 Direct NQSO $33.75 10/27/09 Common Stock 60,000 Direct NQSO $34.67 01/28/13 Common Stock 25,000 Direct NQSO $37.05 11/08/12 Common Stock 12,500 Direct NQSO $44.6875 08/11/10 Common Stock 5,370 Direct NQSO $44.6875 08/13/10 Common Stock 39,630 Direct

Read SEC document
May 22, 2003 Filed May 27, 2003 21:04 UTC
DICKERSON GARY EPresident and
GrantNon-Qualified Stock Option (right to buy) · Derivative 1,000 $0.00 Strike: $40.14 $0.00
Disclosure

SEC source: 0000319201-03-000026 · edgardoc.xml · derivative · entry 1

DICKERSON GARY E · CIK 0001183258 · President and

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: Not disclosed

Underlying: Common Stock · 1,000 shares

Expires 2013-05-22

Read SEC document
May 22, 2003 Filed May 27, 2003 20:48 UTC
WALLACE RICHARD PExecutive Vice President
GrantNon-Qualified Stock Option (right to buy) · Derivative 1,000 $0.00 Strike: $40.14 $0.00
Disclosure

SEC source: 0000319201-03-000024 · edgardoc.xml · derivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: Not disclosed

Underlying: Common Stock · 1,000 shares

Expires 2013-05-22

Read SEC document
May 22, 2003 Filed May 27, 2003 20:29 UTC
FORTINO DENNIS JExecutive Vice President
GrantNon-Qualified Stock Option (right to buy) · Derivative 1,000 $0.00 Strike: $40.14 $0.00
Disclosure

SEC source: 0000319201-03-000022 · edgardoc.xml · derivative · entry 1

FORTINO DENNIS J · CIK 0001186085 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: Not disclosed

Underlying: Common Stock · 1,000 shares

Expires 2013-05-22

Read SEC document
May 15, 2003 Filed May 15, 2003 22:52 UTC Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 5,000 $0.00 Strike: $26.25 $0.00
Disclosure

SEC source: 0000319201-03-000020 · edgardoc.xml · derivative · entry 9

ELKUS RICHARD J JR · CIK 0000923960 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: Not disclosed

Underlying: Common Stock · 5,000 shares

Expires 2010-11-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 15, 2003 Filed May 15, 2003 22:52 UTC Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 2,291 $0.00 Strike: $26.25 $0.00
Disclosure

SEC source: 0000319201-03-000020 · edgardoc.xml · derivative · entry 8

ELKUS RICHARD J JR · CIK 0000923960 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: Not disclosed

Underlying: Common Stock · 2,291 shares

Expires 2010-11-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 15, 2003 Filed May 15, 2003 22:52 UTC Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 209 $0.00 Strike: $20.16 $0.00
Disclosure

SEC source: 0000319201-03-000020 · edgardoc.xml · derivative · entry 7

ELKUS RICHARD J JR · CIK 0000923960 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: Not disclosed

Underlying: Common Stock · 209 shares

Expires 2008-04-30

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 15, 2003 Filed May 15, 2003 22:52 UTC SaleCommon Stock 5,000 $41.61 $208,040.50
Disclosure

SEC source: 0000319201-03-000020 · edgardoc.xml · nonDerivative · entry 6

ELKUS RICHARD J JR · CIK 0000923960 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Read SEC document
May 15, 2003 Filed May 15, 2003 22:52 UTC Exercise / conversionCommon Stock 5,000 $26.25 $131,250.00
Disclosure

SEC source: 0000319201-03-000020 · edgardoc.xml · nonDerivative · entry 5

ELKUS RICHARD J JR · CIK 0000923960 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 15, 2003 Filed May 15, 2003 22:52 UTC SaleCommon Stock 2,291 $41.61 $95,324.16
Disclosure

SEC source: 0000319201-03-000020 · edgardoc.xml · nonDerivative · entry 4

ELKUS RICHARD J JR · CIK 0000923960 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Read SEC document
May 15, 2003 Filed May 15, 2003 22:52 UTC Exercise / conversionCommon Stock 2,291 $26.25 $60,138.75
Disclosure

SEC source: 0000319201-03-000020 · edgardoc.xml · nonDerivative · entry 3

ELKUS RICHARD J JR · CIK 0000923960 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,291

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 15, 2003 Filed May 15, 2003 22:52 UTC SaleCommon Stock 209 $41.61 $8,696.09
Disclosure

SEC source: 0000319201-03-000020 · edgardoc.xml · nonDerivative · entry 2

ELKUS RICHARD J JR · CIK 0000923960 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Read SEC document
May 15, 2003 Filed May 15, 2003 22:52 UTC Exercise / conversionCommon Stock 209 $20.16 $4,213.44
Disclosure

SEC source: 0000319201-03-000020 · edgardoc.xml · nonDerivative · entry 1

ELKUS RICHARD J JR · CIK 0000923960 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,209

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 06, 2003 Filed May 6, 2003 22:40 UTC
URBANEK LIDADirector
SaleCommon Stock 1,000 $43.19 $43,190.00
Disclosure

SEC source: 0000319201-03-000014 · primary_doc.xml · nonDerivative · entry 1

URBANEK LIDA · CIK 0000929927 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Urbanek Family Foundation

Disclosed balance after: 1,307,818

Read SEC document
May 06, 2003 Filed Jun 25, 2003 22:26 UTC Amendment
URBANEK LIDADirector
SaleCommon Stock 1,000 $43.19 $43,190.00
Disclosure

SEC source: 0000319201-03-000052 · primary_doc.xml · nonDerivative · entry 1

URBANEK LIDA · CIK 0000929927 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Family Foundation

Disclosed balance after: 31,924

F1 · balance_after: Table I - Non-Derivative Securities Beneficially Owned, not reported in previous filing Title of Security Amount of Securities Ownership Form Nature of Indirect Common Stock 4,480 Indirect LIMAK Partners LLC Common Stock 1,271,414 Indirect by Trust

F2 · balance_after: Transaction Previously reported in Original Form 4 Filing

F3 · balance_after: Table II-Derivative Securities Beneficially Owned Title Exercise Price Expiration Title Amount Ownership NQSO $12.50 05/13/06 Common Stock 5,280 Direct NQSO $13.44 07/22/08 Common Stock 5,000 Direct NQSO $17.59 11/17/08 Common Stock 6,666 Direct NQSO $17.78 05/15/05 Common Stock 1,946 Direct NQSO $26.25 11/10/10 Common Stock 10,000 Direct NQSO $29.00 07/22/07 Common Stock 5,000 Direct NQSO $37.05 11/08/12 Common Stock 10,000 Direct NQSO $46.28 11/16/09 Common Stock 10,000 Direct NQSO $47.23 11/09/11 Common Stock 10,000 Direct

Read SEC document
May 06, 2003 Filed May 12, 2003 18:03 UTC Amendment
URBANEK LIDADirector
SaleCommon Stock 1,000 $43.19 $43,190.00
Disclosure

SEC source: 0000319201-03-000016 · edgardoc.xml · nonDerivative · entry 1

URBANEK LIDA · CIK 0000929927 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Family Foundation

Disclosed balance after: 31,924

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.