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Kla Corp
(KLAC US)
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KLAC US
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Insider Ownership
WALLACE RICHARD P
(156)
Expand
Form 4
Statement of changes in beneficial ownership
12 Nov
Form 4
Statement of changes in beneficial ownership
16 Sep
Form 4
Statement of changes in beneficial ownership
12 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
2 Jul
Form 4
Statement of changes in beneficial ownership
11 Jun
Form 4
Statement of changes in beneficial ownership
12 May
Kirloskar Virendra A
(127)
Expand
Form 4
Statement of changes in beneficial ownership
11 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
5 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
6 Jul
Form 4
Statement of changes in beneficial ownership
12 May
Form 4
Statement of changes in beneficial ownership
12 Aug 2025
Form 4
Statement of changes in beneficial ownership
8 Aug 2025
Higgins Bren D.
(112)
Expand
Form 4
Statement of changes in beneficial ownership
13 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
6 Jul
Form 4
Statement of changes in beneficial ownership
2 Jul
Form 4
Statement of changes in beneficial ownership
18 Dec 2025
Form 4
Statement of changes in beneficial ownership
22 Aug 2025
Form 4
Statement of changes in beneficial ownership
8 Aug 2025
Khan Ahmad A.
(95)
Expand
Form 4
Statement of changes in beneficial ownership
12 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
2 Jul
Form 4
Statement of changes in beneficial ownership
14 Nov 2025
Form 4
Statement of changes in beneficial ownership
9 Sep 2025
Form 4
Statement of changes in beneficial ownership
2 Sep 2025
Form 4
Statement of changes in beneficial ownership
8 Aug 2025
Lorig Brian
(79)
Expand
Form 4
Statement of changes in beneficial ownership
14 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
2 Jul
Form 4
Statement of changes in beneficial ownership
14 Aug 2025
Form 4
Statement of changes in beneficial ownership
8 Aug 2025
Form 4
Statement of changes in beneficial ownership
7 Aug 2025
Form 4
Statement of changes in beneficial ownership
5 Aug 2025
Bell Bobby R
(68)
Expand
Form 4
Statement of changes in beneficial ownership
5 Feb 2018
Form 4
Statement of changes in beneficial ownership
14 Nov 2017
Form 4
Statement of changes in beneficial ownership
3 Oct 2017
Form 4
Statement of changes in beneficial ownership
8 Sep 2017
Form 4
Statement of changes in beneficial ownership
5 Sep 2017
Form 4
Statement of changes in beneficial ownership
22 Aug 2017
Form 4
Statement of changes in beneficial ownership
9 Aug 2017
Form 4
Statement of changes in beneficial ownership
8 Aug 2017
Form 4
Statement of changes in beneficial ownership
4 Aug 2017
Form 4
Statement of changes in beneficial ownership
13 Jun 2017
BARNHOLT EDWARD W
(48)
Expand
Form 4
Statement of changes in beneficial ownership
12 Aug 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
24 Feb 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
6 Sep 2018
Form 4
Statement of changes in beneficial ownership
17 Nov 2017
Form 4
Statement of changes in beneficial ownership
2 Nov 2017
Trafas Brian M.
(47)
Expand
Form 4
Statement of changes in beneficial ownership
3 Feb 2020
Form 4
Statement of changes in beneficial ownership
21 Nov 2019
Form 4
Statement of changes in beneficial ownership
13 Nov 2019
Form 4
Statement of changes in beneficial ownership
5 Nov 2019
Form 4
Statement of changes in beneficial ownership
8 Aug 2019
Form 4
Statement of changes in beneficial ownership
7 Aug 2019
Form 4
Statement of changes in beneficial ownership
6 Aug 2019
Form 4
Statement of changes in beneficial ownership
3 Jul 2019
Form 4
Statement of changes in beneficial ownership
5 Feb 2019
Form 4
Statement of changes in beneficial ownership
14 Nov 2018
BOND ROBERT T
(43)
Expand
Form 4
ANNUAL DIRECTOR RSU GRANT
5 Nov 2014
Form 4
OPTION EXERCISE NO SALE
21 Oct 2014
Form 4
OPTION EXERCISE AND HOLD
7 Oct 2014
Form 4
OPTION EXERCISE
1 Aug 2014
Form 4
OPTION EXERCISE
5 May 2014
Form 4
STOCK OPTION EXERCISES
7 Feb 2014
Form 4
OUTSIDE DIRECTOR RSU GRANT
6 Nov 2013
Form 4
OPTION EXERCISE AND SALE
31 Oct 2013
Form 4
OPTION EXERCISE AND SALE
13 Jun 2013
Form 4
EXERCISE OF OPTION
1 May 2013
LEVY KENNETH
(40)
Expand
Form 4
PRIMARY DOCUMENT
27 Feb 2007
Form 4/A
PRIMARY DOCUMENT
27 Feb 2007
Form 4
PRIMARY DOCUMENT
12 Feb 2007
Form 4
PRIMARY DOCUMENT
18 Oct 2006
Form 5
PRIMARY DOCUMENT
14 Aug 2006
Form 5/A
PRIMARY DOCUMENT
17 Aug 2006
Form 4
PRIMARY DOCUMENT
27 Feb 2006
Form 4
PRIMARY DOCUMENT
18 Nov 2005
Form 4
PRIMARY DOCUMENT
8 Nov 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Donzella Oreste
(39)
Expand
Form 4
Statement of changes in beneficial ownership
26 Jul 2024
Form 4
Statement of changes in beneficial ownership
27 Mar 2024
Form 4
Statement of changes in beneficial ownership
22 Mar 2024
Form 4
Statement of changes in beneficial ownership
7 Sep 2023
Form 4
Statement of changes in beneficial ownership
8 Aug 2023
Form 4
Statement of changes in beneficial ownership
7 Aug 2023
Form 4
Statement of changes in beneficial ownership
3 Aug 2023
Form 4
Statement of changes in beneficial ownership
4 Apr 2023
Form 4
Statement of changes in beneficial ownership
22 Mar 2023
Form 4
Statement of changes in beneficial ownership
6 Dec 2022
KENNEDY KEVIN
(36)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
3 Feb 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
4 Nov 2020
Form 4
Statement of changes in beneficial ownership
5 Aug 2020
KAUFMAN STEPHEN P
(36)
Expand
Form 4
OPTION EXERCISES AND SALES
2 Dec 2013
Form 4
OUTSIDE DIRECTOR RSU GRANT
6 Nov 2013
Form 4
STOCK OPTION EXERCISES
31 Oct 2013
Form 4
OPTION EXERCISES
1 Feb 2013
Form 4
OPTION EXERCISE
31 Jan 2013
Form 4
ANNUAL RSU GRANT
9 Nov 2012
Form 4
NQ EXERCISE AND SALE
17 Feb 2012
Form 4
NOVEMBER 2011 RSU GRANT AND VESTING
4 Nov 2011
Form 4
Statement of changes in beneficial ownership
3 Nov 2010
Form 4
Statement of changes in beneficial ownership
5 Nov 2009
URBANEK LIDA
(34)
Expand
Form 4
Statement of changes in beneficial ownership
24 Jul 2008
Form 4
NOV 2007 - URBANEK RSU
19 Nov 2007
Form 4
Statement of changes in beneficial ownership
1 Nov 2007
Form 4/A
Statement of changes in beneficial ownership (amendment)
1 Nov 2007
Form 4
Statement of changes in beneficial ownership
2 Aug 2007
Form 4
Statement of changes in beneficial ownership
20 Jul 2007
Form 4
PRIMARY DOCUMENT
3 May 2007
Form 4/A
Statement of changes in beneficial ownership (amendment)
1 Nov 2007
Form 4
PRIMARY DOCUMENT
30 Mar 2007
Form 4
PRIMARY DOCUMENT
15 Feb 2007
CALDERONI ROBERT
(34)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
6 Feb
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
6 Sep 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Martin Brian
(34)
Expand
Form 4
Statement of changes in beneficial ownership
10 Sep 2015
Form 4
Statement of changes in beneficial ownership
8 Sep 2015
Form 4
Statement of changes in beneficial ownership
12 Aug 2015
Form 4
Statement of changes in beneficial ownership
11 Aug 2015
Form 4
Statement of changes in beneficial ownership
10 Aug 2015
Form 4/A
Statement of changes in beneficial ownership (amendment)
10 Aug 2015
Form 4
Statement of changes in beneficial ownership
7 Aug 2015
Form 4
Statement of changes in beneficial ownership
6 Aug 2015
Form 4
Statement of changes in beneficial ownership
4 Aug 2015
Form 4
Statement of changes in beneficial ownership
11 Aug 2014
Little Teri A.
(32)
Expand
Form 4
Statement of changes in beneficial ownership
5 Jun 2020
Form 4
Statement of changes in beneficial ownership
26 Feb 2020
Form 4
Statement of changes in beneficial ownership
21 Nov 2019
Form 4
Statement of changes in beneficial ownership
13 Nov 2019
Form 4
Statement of changes in beneficial ownership
5 Nov 2019
Form 4
Statement of changes in beneficial ownership
5 Sep 2019
Form 4
Statement of changes in beneficial ownership
22 Aug 2019
Form 4
Statement of changes in beneficial ownership
7 Aug 2019
Form 4
Statement of changes in beneficial ownership
6 Aug 2019
Form 4
Statement of changes in beneficial ownership
5 Aug 2019
BINGHAM H RAYMOND
(30)
Expand
Form 4
Statement of changes in beneficial ownership
19 Nov 2007
Form 4
Statement of changes in beneficial ownership
1 Nov 2007
Form 4/A
Statement of changes in beneficial ownership (amendment)
1 Nov 2007
Form 4
Statement of changes in beneficial ownership
2 Aug 2007
Form 4
PRIMARY DOCUMENT
4 May 2007
Form 4
PRIMARY DOCUMENT
4 May 2007
Form 4
PRIMARY DOCUMENT
4 May 2007
Form 4
PRIMARY DOCUMENT
3 May 2007
Form 4/A
Statement of changes in beneficial ownership (amendment)
1 Nov 2007
Form 4/A
PRIMARY DOCUMENT
2 Apr 2007
SCHROEDER KENNETH L
(29)
Expand
Form 4
PRIMARY DOCUMENT
9 Feb 2006
Form 4
PRIMARY DOCUMENT
30 Nov 2005
Form 4
PRIMARY DOCUMENT
4 Nov 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Form 4
PRIMARY DOCUMENT
23 Aug 2005
Form 5
PRIMARY DOCUMENT
12 Aug 2005
Form 4
PRIMARY DOCUMENT
28 Feb 2005
Form 4
PRIMARY DOCUMENT
6 Dec 2004
Form 4
PRIMARY DOCUMENT
6 Dec 2004
Form 4
PRIMARY DOCUMENT
20 Oct 2004
Wilkinson Mary Beth
(28)
Expand
Form 4
Statement of changes in beneficial ownership
11 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
5 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
2 Jul
Form 4
Statement of changes in beneficial ownership
12 Aug 2025
Form 4
Statement of changes in beneficial ownership
8 Aug 2025
Form 4
Statement of changes in beneficial ownership
7 Aug 2025
ELKUS RICHARD J JR
(26)
Expand
Form 4
PRIMARY DOCUMENT
30 Nov 2005
Form 4
PRIMARY DOCUMENT
22 Nov 2005
Form 4
PRIMARY DOCUMENT
6 Sep 2005
Form 4
PRIMARY DOCUMENT
3 Aug 2005
Form 4/A
PRIMARY DOCUMENT
15 Aug 2005
Form 5
PRIMARY DOCUMENT
3 Aug 2005
Form 4
PRIMARY DOCUMENT
2 Jun 2005
Form 4
PRIMARY DOCUMENT
11 May 2005
Form 4
PRIMARY DOCUMENT
10 Mar 2005
Form 4
PRIMARY DOCUMENT
26 Jan 2005
Kirk Michael
(26)
Expand
Form 4
Statement of changes in beneficial ownership
8 Feb 2017
Form 4
Statement of changes in beneficial ownership
14 Nov 2016
Form 4
Statement of changes in beneficial ownership
27 Oct 2016
Form 4
Statement of changes in beneficial ownership
9 Sep 2016
Form 4
Statement of changes in beneficial ownership
9 Aug 2016
Form 4
Statement of changes in beneficial ownership
8 Aug 2016
Form 4
Statement of changes in beneficial ownership
4 Aug 2016
Form 4
Statement of changes in beneficial ownership
10 Feb 2016
Form 4
Statement of changes in beneficial ownership
9 Feb 2016
Form 4
Statement of changes in beneficial ownership
23 Oct 2015
TOMPKINS JON D
(24)
Expand
Form 4
PRIMARY DOCUMENT
8 Jan 2007
Form 4
PRIMARY DOCUMENT
1 Aug 2006
Form 5
PRIMARY DOCUMENT
11 Aug 2006
Form 4
PRIMARY DOCUMENT
2 May 2006
Form 4
PRIMARY DOCUMENT
1 Feb 2006
Form 4
PRIMARY DOCUMENT
7 Nov 2005
Form 4
PRIMARY DOCUMENT
29 Aug 2005
Form 4/A
PRIMARY DOCUMENT
15 Aug 2005
Form 4
PRIMARY DOCUMENT
3 Aug 2005
Form 5
PRIMARY DOCUMENT
3 Aug 2005
KISPERT JOHN H
(23)
Expand
Form 4
Statement of changes in beneficial ownership
21 Oct 2008
Form 4
Statement of changes in beneficial ownership
23 Sep 2008
Form 4
Statement of changes in beneficial ownership
7 Aug 2008
Form 4
Statement of changes in beneficial ownership
10 Aug 2007
Form 4/A
PRIMARY DOCUMENT
30 Jan 2007
Form 4
MAIN DOCUMENT DESCRIPTION
29 Dec 2006
Form 5
PRIMARY DOCUMENT
14 Aug 2006
Form 4
PRIMARY DOCUMENT
21 Feb 2006
Form 4
Statement of changes in beneficial ownership
19 Dec 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Higashi Emiko
(23)
Expand
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
13 Mar 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Feb 2018
Wang David C
(22)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
6 Nov 2017
Form 4
Statement of changes in beneficial ownership
3 Nov 2016
Form 4
Statement of changes in beneficial ownership
6 Nov 2015
Form 4
ANNUAL DIRECTOR RSU GRANT
5 Nov 2014
Form 4
OPTION EXERCISES
27 Feb 2014
Form 4
OUTSIDE DIRECTOR RSU GRANT
6 Nov 2013
Form 4
OPTION EXERCISE AND SALE
10 Sep 2013
Form 4
ANNUAL RSU GRANT
9 Nov 2012
Form 4
NOVEMBER 2011 RSU GRANT AND VESTING
4 Nov 2011
PATEL KIRAN M
(21)
Expand
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
12 Aug 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
6 Nov 2017
Form 4
Statement of changes in beneficial ownership
22 Nov 2016
Form 4
Statement of changes in beneficial ownership
3 Nov 2016
DICKSON JOHN T
(21)
Expand
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
3 Nov 2017
Form 4
Statement of changes in beneficial ownership
4 Nov 2016
Form 4
Statement of changes in beneficial ownership
6 Nov 2015
Form 4
ANNUAL DIRECTOR RSU GRANT
5 Nov 2014
Form 4
OPTION EXERCISES
31 Jul 2014
Form 4
OUTSIDE DIRECTOR RSU GRANT
6 Nov 2013
Form 4
ANNUAL RSU GRANT
9 Nov 2012
DENTINGER MARK P
(18)
Expand
Form 4
AUGUST 8 10B5-1 SALE
12 Aug 2013
Form 4
AUGUST RSU RELEASE
8 Aug 2013
Form 4
10B5-1 PLAN SALES
7 Aug 2013
Form 4
AUGUST 2013 ACTIVITIY
6 Aug 2013
Form 4
ESPP SHARE SALE
3 Jul 2013
Form 4
10B5-1 PLAN SALE
29 Jan 2013
Form 4
RSU VESTING
13 Nov 2012
Form 4
RSU RELEASE
7 Aug 2012
Form 4
AUGUST 2, 2012 RSU ACTIVITY
3 Aug 2012
Form 4
Statement of changes in beneficial ownership
5 Jan 2012
LAMB MAUREEN L
(17)
Expand
Form 4/A
PRIMARY DOCUMENT
30 Jun 2005
Form 4
PRIMARY DOCUMENT
29 Jun 2005
Form 4
PRIMARY DOCUMENT
27 May 2005
Form 4
PRIMARY DOCUMENT
6 Dec 2004
Form 4
PRIMARY DOCUMENT
23 Sep 2004
Form 4
PRIMARY DOCUMENT
9 Aug 2004
Form 5
PRIMARY DOCUMENT
10 Aug 2004
Form 4
PRIMARY DOCUMENT
27 Apr 2004
Form 4
PRIMARY DOCUMENT
29 Jan 2004
Form 4
PRIMARY DOCUMENT
28 Oct 2003
Glasser Lance A
(15)
Expand
Form 4
PRIMARY DOCUMENT
12 Feb 2007
Form 4
PRIMARY DOCUMENT
8 Jan 2007
Form 5
PRIMARY DOCUMENT
11 Aug 2006
Form 4
PRIMARY DOCUMENT
1 Mar 2006
Form 4
PRIMARY DOCUMENT
3 Nov 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Form 4
PRIMARY DOCUMENT
14 Sep 2005
Form 4
PRIMARY DOCUMENT
22 Aug 2005
Form 5
PRIMARY DOCUMENT
11 Aug 2005
Form 4
PRIMARY DOCUMENT
6 Dec 2004
Hall Jeffrey
(14)
Expand
Form 4
Statement of changes in beneficial ownership
8 Nov 2007
Form 4
Statement of changes in beneficial ownership
10 Aug 2007
Form 5
PRIMARY DOCUMENT
11 Aug 2006
Form 4
PRIMARY DOCUMENT
21 Feb 2006
Form 4
PRIMARY DOCUMENT
21 Nov 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Form 4
PRIMARY DOCUMENT
22 Aug 2005
Form 5
PRIMARY DOCUMENT
11 Aug 2005
Form 4
PRIMARY DOCUMENT
27 May 2005
Form 4
PRIMARY DOCUMENT
17 May 2005
RANGO ROBERT A.
(14)
Expand
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
3 Jul 2018
Form 4
Statement of changes in beneficial ownership
2 Nov 2017
MOORE GARY B
(14)
Expand
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
12 May 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
2 Nov 2017
MARKS MICHAEL E
(13)
Expand
Form 4
PRIMARY DOCUMENT
15 May 2006
Form 4
PRIMARY DOCUMENT
9 May 2006
Form 4
PRIMARY DOCUMENT
3 May 2006
Form 4
PRIMARY DOCUMENT
1 Feb 2006
Form 4
PRIMARY DOCUMENT
7 Nov 2005
Form 4
PRIMARY DOCUMENT
3 Aug 2005
Form 4/A
PRIMARY DOCUMENT
15 Aug 2005
Form 5
PRIMARY DOCUMENT
3 Aug 2005
Form 4
PRIMARY DOCUMENT
11 May 2005
Form 4
PRIMARY DOCUMENT
26 Jan 2005
NICHOLS STUART J
(13)
Expand
Form 5
PRIMARY DOCUMENT
11 Aug 2006
Form 4
PRIMARY DOCUMENT
20 Oct 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Form 5
PRIMARY DOCUMENT
11 Aug 2005
Form 4
PRIMARY DOCUMENT
23 Sep 2004
Form 4
PRIMARY DOCUMENT
9 Aug 2004
Form 5
PRIMARY DOCUMENT
10 Aug 2004
Form 4
PRIMARY DOCUMENT
27 Apr 2004
Form 4
PRIMARY DOCUMENT
29 Jan 2004
Form 4
PRIMARY DOCUMENT
28 Oct 2003
Hanley Jeneanne Michelle
(13)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
12 May
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
8 Sep 2023
Form 4
Statement of changes in beneficial ownership
15 Dec 2022
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
CAMPAGNA JOHN PETER
(12)
Expand
Form 4
PRIMARY DOCUMENT
24 Nov 2003
Form 4
PRIMARY DOCUMENT
12 Nov 2003
Form 4
PRIMARY DOCUMENT
28 Oct 2003
Form 4/A
PRIMARY DOCUMENT
1 Aug 2003
Form 4
PRIMARY DOCUMENT
31 Jul 2003
Form 5
PRIMARY DOCUMENT
7 Aug 2003
Form 4/A
PRIMARY DOCUMENT
24 Jun 2003
Form 4
PRIMARY DOCUMENT
28 May 2003
Form 4
Statement of changes in beneficial ownership
5 May 2003
Form 4
Statement of changes in beneficial ownership
28 Feb 2003
COHEN AVI
(12)
Expand
Form 4
PRIMARY DOCUMENT
8 Aug 2006
Form 5
PRIMARY DOCUMENT
11 Aug 2006
Form 4
PRIMARY DOCUMENT
16 Dec 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Form 5
PRIMARY DOCUMENT
12 Aug 2005
Form 4
PRIMARY DOCUMENT
20 Oct 2004
Form 4
PRIMARY DOCUMENT
23 Sep 2004
Form 4
PRIMARY DOCUMENT
9 Aug 2004
Form 5
PRIMARY DOCUMENT
10 Aug 2004
Form 4
PRIMARY DOCUMENT
27 Apr 2004
FORTINO DENNIS J
(11)
Expand
Form 4
PRIMARY DOCUMENT
27 Apr 2004
Form 4
PRIMARY DOCUMENT
30 Jan 2004
Form 4
PRIMARY DOCUMENT
29 Jan 2004
Form 4
PRIMARY DOCUMENT
28 Oct 2003
Form 4
PRIMARY DOCUMENT
30 Jul 2003
Form 4/A
PRIMARY DOCUMENT
1 Aug 2003
Form 4
PRIMARY DOCUMENT
31 Jul 2003
Form 5
PRIMARY DOCUMENT
8 Aug 2003
Form 4
PRIMARY DOCUMENT
27 May 2003
Form 4/A
PRIMARY DOCUMENT
26 Jun 2003
PENG VICTOR
(10)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
1 Feb 2019
Form 3
Initial statement of beneficial ownership
1 Feb 2019
DICKERSON GARY E
(10)
Expand
Form 4
PRIMARY DOCUMENT
27 Apr 2004
Form 4
PRIMARY DOCUMENT
29 Jan 2004
Form 4
PRIMARY DOCUMENT
28 Oct 2003
Form 4
PRIMARY DOCUMENT
18 Aug 2003
Form 4
PRIMARY DOCUMENT
31 Jul 2003
Form 4/A
PRIMARY DOCUMENT
1 Aug 2003
Form 5
PRIMARY DOCUMENT
7 Aug 2003
Form 4
PRIMARY DOCUMENT
27 May 2003
Form 4/A
PRIMARY DOCUMENT
25 Jun 2003
Form 4
Statement of changes in beneficial ownership
12 Nov 2002
YARBRO STAN
(8)
Expand
Form 4
PRIMARY DOCUMENT
27 Oct 2004
Form 4
PRIMARY DOCUMENT
27 Oct 2004
Form 4
PRIMARY DOCUMENT
23 Sep 2004
Form 4
PRIMARY DOCUMENT
9 Aug 2004
Form 5
PRIMARY DOCUMENT
10 Aug 2004
Form 4
PRIMARY DOCUMENT
27 Apr 2004
Form 4
PRIMARY DOCUMENT
29 Jan 2004
Form 3
PRIMARY DOCUMENT
14 Nov 2003
Steimberg Amichai
(8)
Expand
Form 4
Statement of changes in beneficial ownership
3 Jan 2020
Form 4
Statement of changes in beneficial ownership
12 Nov 2019
Form 4
Statement of changes in beneficial ownership
13 Sep 2019
Form 4
Statement of changes in beneficial ownership
5 Sep 2019
Form 4
Statement of changes in beneficial ownership
20 Aug 2019
Form 4
Statement of changes in beneficial ownership
7 Aug 2019
Form 4
Statement of changes in beneficial ownership
2 Jul 2019
Form 3
Initial statement of beneficial ownership
28 Mar 2019
AKINS ROBERT P
(7)
Expand
Form 4
ANNUAL RSU GRANT
9 Nov 2012
Form 4
NOVEMBER 2011 RSU GRANTS AND VESTINGS
4 Nov 2011
Form 4
Statement of changes in beneficial ownership
3 Nov 2010
Form 4
Statement of changes in beneficial ownership
5 Nov 2009
Form 4
Statement of changes in beneficial ownership
13 Nov 2008
Form 4
Statement of changes in beneficial ownership
7 May 2008
Form 3
Initial statement of beneficial ownership
7 May 2008
McMullen Michael R.
(6)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
26 Jul 2023
Form 3
Initial statement of beneficial ownership
26 Jul 2023
MYERS MARIE
(6)
Expand
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
12 Feb 2020
Form 3
Initial statement of beneficial ownership
12 Feb 2020
Samath Jamie
(4)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
2 May 2025
Form 3
Initial statement of beneficial ownership
2 May 2025
Titinger Jorge
(4)
Expand
Form 4
Statement of changes in beneficial ownership
10 Aug 2007
Form 4
PRIMARY DOCUMENT
10 May 2007
Form 3
PRIMARY DOCUMENT
5 Jan 2007
Form 3/A
PRIMARY DOCUMENT
8 Jan 2007
Taylor Susan J.S.
(4)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 3
Initial statement of beneficial ownership
12 May 2025
Form 4
Statement of changes in beneficial ownership
12 May 2025
Pinczuk Ana G.
(4)
Expand
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 3
Initial statement of beneficial ownership
3 Aug 2018
Form 4
Statement of changes in beneficial ownership
3 Aug 2018
KLA TENCOR CORP
(3)
Expand
Form 4
MAIN DOCUMENT DESCRIPTION
25 May 2007
Form 3
Initial statement of beneficial ownership
17 Jan 2007
Form 3
MAIN DOCUMENT DESCRIPTION
6 Mar 2006
Embree Tracy A
(3)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 3
Initial statement of beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
GROSS LAWRENCE A
(2)
Expand
Form 4
PRIMARY DOCUMENT
3 Apr 2007
Form 3
PRIMARY DOCUMENT
25 Oct 2006
Tsai Bin-Ming Ben
(2)
Expand
Form 4
PRIMARY DOCUMENT
15 Feb 2007
Form 3
PRIMARY DOCUMENT
3 Jan 2007
Conley Jason
(2)
Expand
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 3
Initial statement of beneficial ownership
7 Nov 2025
Levy Asher
(2)
Expand
Form 3
Initial statement of beneficial ownership
22 Feb 2019
Form 4
Statement of changes in beneficial ownership
22 Feb 2019
≥5% Ownership
FMR LLC
(23)
Expand
SC 13G/A
Kla Tencor Corp
10 May 2012
SC 13G/A
Kla Tencor Corp
14 Feb 2012
SC 13G/A
Kla Tencor Corp
14 Feb 2011
SC 13G/A
Kla Tencor Corp
10 Nov 2010
SC 13G/A
Kla Tencor Corp
10 Aug 2010
SC 13G/A
Kla Tencor Corp
16 Feb 2010
SC 13G
Kla Tencor Corp
10 Aug 2009
SC 13G/A
Kla Tencor Corp
10 Aug 2007
SC 13G/A
Kla Tencor Corp
14 Feb 2007
SC 13G/A
Kla Tencor Corp
14 Feb 2006
VANGUARD GROUP INC
(15)
Expand
SC 13G/A
Kla Corp
27 Mar
SC 13G/A
Kla Corp
4 Oct 2024
SC 13G/A
Kla Corp
13 Feb 2024
SC 13G/A
Kla Corp
9 Feb 2023
SC 13G/A
Kla Corp
10 Feb 2022
SC 13G/A
Kla Corp
10 Feb 2021
SC 13G/A
Kla Corp
12 Feb 2020
SC 13G/A
Kla Tencor Corp
11 Feb 2019
SC 13G/A
Kla Tencor Corp
8 Feb 2018
SC 13G/A
Kla Tencor Corp
10 Jan 2017
BlackRock Inc.
(15)
Expand
SC 13G/A
Kla Corp
25 Jan 2024
SC 13G
Kla Corp
30 Jan 2023
SC 13G/A
Kla Corp
1 Feb 2022
SC 13G/A
Kla Corp
29 Jan 2021
SC 13G/A
Kla Corp
5 Feb 2020
SC 13G/A
Kla Tencor Corp
6 Feb 2019
SC 13G/A
Kla Tencor Corp
8 Feb 2018
SC 13G/A
Kla Tencor Corp
25 Jan 2017
SC 13G/A
Kla Tencor Corp
10 Feb 2016
SC 13G/A
Kla Tencor Corp
9 Feb 2015
CAPITAL GROUP INTERNATIONAL INC
(12)
Expand
SC 13G/A
Kla Tencor Corp
10 Nov 2008
SC 13G/A
Kla Tencor Corp
1 Feb 2008
SC 13G/A
Kla Tencor Corp
12 Feb 2007
SC 13G/A
Kla Tencor Corp
9 Feb 2006
SC 13G/A
Kla Tencor Corp
14 Feb 2005
SC 13G/A
Kla Tencor Corp
10 Sep 2004
SC 13G/A
Kla Tencor Corp
13 Feb 2004
SC 13G/A
Kla Tencor Corp
14 Feb 2003
SC 13G/A
Kla Tencor Corp
10 Oct 2002
SC 13G/A
Kla Tencor Corp
11 Feb 2002
Capital World Investors
(11)
Expand
SC 13G/A
Kla Tencor Corp
10 Aug 2016
SC 13G/A
Kla Tencor Corp
12 Feb 2016
SC 13G/A
Kla Tencor Corp
10 Dec 2015
SC 13G/A
Kla Tencor Corp
13 Feb 2015
SC 13G
Kla Tencor Corp
9 Oct 2014
SC 13G/A
Kla Tencor Corp
8 Jun 2012
SC 13G/A
Kla Tencor Corp
10 Feb 2012
SC 13G/A
Kla Tencor Corp
14 Feb 2011
SC 13G/A
Kla Tencor Corp
8 Oct 2010
SC 13G/A
Kla Tencor Corp
11 Feb 2010
CAPITAL RESEARCH & MANAGEMENT CO
(10)
Expand
SC 13G/A
Kla Tencor Corp
13 Feb 2008
SC 13G/A
Kla Tencor Corp
12 Feb 2007
SC 13G/A
Kla Tencor Corp
10 Feb 2006
SC 13G/A
Kla Tencor Corp
8 Jul 2005
SC 13G/A
Kla Tencor Corp
14 Feb 2005
SC 13G/A
Kla Tencor Corp
13 Feb 2004
SC 13G/A
Kla Tencor Corp
14 Feb 2003
SC 13G/A
Kla Tencor Corp
11 Feb 2002
SC 13G/A
Kla Tencor Corp
12 Feb 2001
SC 13G
Kla Tencor Corp
11 Feb 2000
PRIMECAP MANAGEMENT CO/CA/
(10)
Expand
SC 13G/A
Kla Corp
10 Feb 2022
SC 13G/A
Kla Corp
8 Feb 2022
SC 13G/A
Kla Corp
12 Feb 2021
SC 13G/A
Kla Corp
12 Feb 2020
SC 13G/A
Kla Tencor Corp
8 Feb 2019
SC 13G/A
Kla Tencor Corp
27 Feb 2018
SC 13G/A
Kla Tencor Corp
9 Feb 2017
SC 13G/A
Kla Tencor Corp
12 Feb 2016
SC 13G/A
Kla Tencor Corp
13 Feb 2015
SC 13G
Kla Tencor Corp
7 Mar 2014
Capital Research Global Investors
(10)
Expand
SC 13G/A
Kla Tencor Corp
10 Dec 2015
SC 13G/A
Kla Tencor Corp
13 Feb 2015
SC 13G/A
Kla Tencor Corp
13 Feb 2014
SC 13G/A
Kla Tencor Corp
13 Feb 2013
SC 13G/A
Kla Tencor Corp
9 Feb 2012
SC 13G/A
Kla Tencor Corp
11 Feb 2011
SC 13G/A
Kla Tencor Corp
9 Feb 2010
SC 13G/A
Kla Tencor Corp
13 Feb 2009
SC 13G/A
Kla Tencor Corp
10 Jun 2008
SC 13G
Kla Tencor Corp
12 Feb 2008
JPMORGAN CHASE & CO
(7)
Expand
SC 13G/A
Kla Tencor Corp
7 Nov 2017
SC 13G/A
Kla Tencor Corp
19 Jan 2017
SC 13G/A
Kla Tencor Corp
19 Jan 2016
SC 13G/A
Kla Tencor Corp
7 Dec 2015
SC 13G/A
Kla Tencor Corp
15 Jan 2015
SC 13G/A
Kla Tencor Corp
7 Mar 2014
SC 13G
Kla Tencor Corp
28 Jan 2014
JENNISON ASSOCIATES LLC
(7)
Expand
SC 13G/A
Kla Tencor Corp
10 Feb 2000
SC 13G/A
Kla Tencor Corp
11 Feb 1999
SC 13G/A
Kla Tencor Corp
12 Feb 1998
SC 13G/A
Kla Instruments Corp
3 Feb 1997
SC 13G/A
Kla Instruments Corp
10 Dec 1996
SC 13G/A
Kla Instruments Corp
10 Dec 1996
SC 13G/A
Kla Instruments Corp
10 Dec 1996
PRUDENTIAL INSURANCE CO OF AMERICA
(7)
Expand
SC 13G/A
Kla Tencor Corp
23 Jan 2001
SC 13G/A
Kla Tencor Corp
31 Jan 2000
SC 13G/A
Kla Tencor Corp
29 Jan 1999
SC 13G/A
Kla Tencor Corp
9 Feb 1998
SC 13G/A
Kla Instruments Corp
6 Feb 1997
SC 13G/A
Kla Instruments Corp
10 Jun 1996
SC 13G
Kla Instruments Corp
14 Feb 1996
AXA FINANCIAL INC
(7)
Expand
SC 13G/A
Kla Tencor Corp
9 Feb 2011
SC 13G
Kla Tencor Corp
12 Feb 2010
SC 13G/A
Kla Tencor Corp
13 Feb 2007
SC 13G/A
Kla Tencor Corp
10 Jul 2006
SC 13G/A
Kla Tencor Corp
10 Apr 2006
SC 13G/A
Kla Tencor Corp
14 Feb 2006
SC 13G
Kla Tencor Corp
14 Feb 2005
KLA TENCOR CORP
(6)
Expand
SC 13D
Therma Wave Inc
18 Jan 2007
SC 13D
Ade Corp
6 Mar 2006
SC 13D
Qc Optics Inc
10 Sep 2001
SC 13D
Tencor Instruments
24 Jan 1997
SC 13D/A
Micrion Corp /Ma/
6 Jun 1996
SC 13D
Micrion Corp /Ma/
17 May 1996
GROWTH FUND OF AMERICA INC
(5)
Expand
SC 13G/A
Kla Tencor Corp
13 Feb 2013
SC 13G/A
Kla Tencor Corp
14 Feb 2012
SC 13G/A
Kla Tencor Corp
14 Feb 2011
SC 13G/A
Kla Tencor Corp
12 Feb 2010
SC 13G
Kla Tencor Corp
12 Feb 2009
CAPITAL GROUP COMPANIES INC ET AL
(5)
Expand
SC 13G
Kla Tencor Corp
9 Jul 1998
SC 13G
Kla Tencor Corp
10 Feb 1998
SC 13G/A
Kla Tencor Corp
10 Sep 1997
SC 13G/A
Kla Instruments Corp
12 Feb 1997
SC 13G
Kla Instruments Corp
9 Aug 1996
JANUS CAPITAL MANAGEMENT LLC
(4)
Expand
SC 13G/A
Kla Tencor Corp
14 Feb 2011
SC 13G/A
Kla Tencor Corp
16 Feb 2010
SC 13G/A
Kla Tencor Corp
17 Feb 2009
SC 13G
Kla Tencor Corp
14 Feb 2008
WELLINGTON MANAGEMENT GROUP LLP
(4)
Expand
SC 13G/A
Kla Corp
4 Feb 2021
SC 13G/A
Kla Corp
27 Jan 2020
SC 13G/A
Kla Tencor Corp
12 Feb 2019
SC 13G
Kla Tencor Corp
8 Feb 2018
CAPITAL GUARDIAN TRUST CO
(3)
Expand
SC 13G
Kla Tencor Corp
12 Feb 1999
SC 13G
Kla Tencor Corp
9 Nov 1998
SC 13G
Kla Tencor Corp
9 Jul 1998
NEUBERGER BERMAN LLC
(3)
Expand
SC 13G/A
Kla Tencor Corp
11 Feb 1999
SC 13G
Kla Tencor Corp
12 Feb 1998
SC 13G
Kla Instruments Corp
11 Feb 1997
Capital International Investors
(3)
Expand
SC 13G/A
Kla Corp
13 Feb 2023
SC 13G/A
Kla Corp
11 Feb 2022
SC 13G
Kla Corp
16 Feb 2021
PRICE T ROWE ASSOCIATES INC /MD/
(2)
Expand
SC 13G/A
Kla Tencor Corp
6 Feb 2002
SC 13G
Kla Tencor Corp
8 Feb 2001
STATE STREET CORP
(2)
Expand
SC 13G/A
Kla Tencor Corp
22 Feb 2016
SC 13G
Kla Tencor Corp
12 Feb 2015
PUTNAM INVESTMENTS INC
(2)
Expand
SC 13G/A
Kla Tencor Corp
20 Feb 2001
SC 13G
Kla Tencor Corp
17 Feb 2000
TENCOR INSTRUMENTS
(1)
Expand
SC 13D
Kla Instruments Corp
24 Jan 1997
TWENTIETH CENTURY COMPANIES INC
(1)
Expand
SC 13G/A
Kla Instruments Corp
9 Feb 1996
CHANCELLOR CAPITAL MANAGEMENT INC
(1)
Expand
SC 13G
Kla Instruments Corp
12 Feb 1996
VANGUARD CAPITAL MANAGEMENT LLC
(1)
Expand
SC 13G
Kla Corp
30 Apr
Select Filings
Insider Ownership
WALLACE RICHARD P
(156)
Expand
Form 4
Statement of changes in beneficial ownership
12 Nov
Form 4
Statement of changes in beneficial ownership
16 Sep
Form 4
Statement of changes in beneficial ownership
12 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
2 Jul
Form 4
Statement of changes in beneficial ownership
11 Jun
Form 4
Statement of changes in beneficial ownership
12 May
Kirloskar Virendra A
(127)
Expand
Form 4
Statement of changes in beneficial ownership
11 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
5 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
6 Jul
Form 4
Statement of changes in beneficial ownership
12 May
Form 4
Statement of changes in beneficial ownership
12 Aug 2025
Form 4
Statement of changes in beneficial ownership
8 Aug 2025
Higgins Bren D.
(112)
Expand
Form 4
Statement of changes in beneficial ownership
13 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
6 Jul
Form 4
Statement of changes in beneficial ownership
2 Jul
Form 4
Statement of changes in beneficial ownership
18 Dec 2025
Form 4
Statement of changes in beneficial ownership
22 Aug 2025
Form 4
Statement of changes in beneficial ownership
8 Aug 2025
Khan Ahmad A.
(95)
Expand
Form 4
Statement of changes in beneficial ownership
12 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
2 Jul
Form 4
Statement of changes in beneficial ownership
14 Nov 2025
Form 4
Statement of changes in beneficial ownership
9 Sep 2025
Form 4
Statement of changes in beneficial ownership
2 Sep 2025
Form 4
Statement of changes in beneficial ownership
8 Aug 2025
Lorig Brian
(79)
Expand
Form 4
Statement of changes in beneficial ownership
14 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
2 Jul
Form 4
Statement of changes in beneficial ownership
14 Aug 2025
Form 4
Statement of changes in beneficial ownership
8 Aug 2025
Form 4
Statement of changes in beneficial ownership
7 Aug 2025
Form 4
Statement of changes in beneficial ownership
5 Aug 2025
Bell Bobby R
(68)
Expand
Form 4
Statement of changes in beneficial ownership
5 Feb 2018
Form 4
Statement of changes in beneficial ownership
14 Nov 2017
Form 4
Statement of changes in beneficial ownership
3 Oct 2017
Form 4
Statement of changes in beneficial ownership
8 Sep 2017
Form 4
Statement of changes in beneficial ownership
5 Sep 2017
Form 4
Statement of changes in beneficial ownership
22 Aug 2017
Form 4
Statement of changes in beneficial ownership
9 Aug 2017
Form 4
Statement of changes in beneficial ownership
8 Aug 2017
Form 4
Statement of changes in beneficial ownership
4 Aug 2017
Form 4
Statement of changes in beneficial ownership
13 Jun 2017
BARNHOLT EDWARD W
(48)
Expand
Form 4
Statement of changes in beneficial ownership
12 Aug 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
24 Feb 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
6 Sep 2018
Form 4
Statement of changes in beneficial ownership
17 Nov 2017
Form 4
Statement of changes in beneficial ownership
2 Nov 2017
Trafas Brian M.
(47)
Expand
Form 4
Statement of changes in beneficial ownership
3 Feb 2020
Form 4
Statement of changes in beneficial ownership
21 Nov 2019
Form 4
Statement of changes in beneficial ownership
13 Nov 2019
Form 4
Statement of changes in beneficial ownership
5 Nov 2019
Form 4
Statement of changes in beneficial ownership
8 Aug 2019
Form 4
Statement of changes in beneficial ownership
7 Aug 2019
Form 4
Statement of changes in beneficial ownership
6 Aug 2019
Form 4
Statement of changes in beneficial ownership
3 Jul 2019
Form 4
Statement of changes in beneficial ownership
5 Feb 2019
Form 4
Statement of changes in beneficial ownership
14 Nov 2018
BOND ROBERT T
(43)
Expand
Form 4
ANNUAL DIRECTOR RSU GRANT
5 Nov 2014
Form 4
OPTION EXERCISE NO SALE
21 Oct 2014
Form 4
OPTION EXERCISE AND HOLD
7 Oct 2014
Form 4
OPTION EXERCISE
1 Aug 2014
Form 4
OPTION EXERCISE
5 May 2014
Form 4
STOCK OPTION EXERCISES
7 Feb 2014
Form 4
OUTSIDE DIRECTOR RSU GRANT
6 Nov 2013
Form 4
OPTION EXERCISE AND SALE
31 Oct 2013
Form 4
OPTION EXERCISE AND SALE
13 Jun 2013
Form 4
EXERCISE OF OPTION
1 May 2013
LEVY KENNETH
(40)
Expand
Form 4
PRIMARY DOCUMENT
27 Feb 2007
Form 4/A
PRIMARY DOCUMENT
27 Feb 2007
Form 4
PRIMARY DOCUMENT
12 Feb 2007
Form 4
PRIMARY DOCUMENT
18 Oct 2006
Form 5
PRIMARY DOCUMENT
14 Aug 2006
Form 5/A
PRIMARY DOCUMENT
17 Aug 2006
Form 4
PRIMARY DOCUMENT
27 Feb 2006
Form 4
PRIMARY DOCUMENT
18 Nov 2005
Form 4
PRIMARY DOCUMENT
8 Nov 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Donzella Oreste
(39)
Expand
Form 4
Statement of changes in beneficial ownership
26 Jul 2024
Form 4
Statement of changes in beneficial ownership
27 Mar 2024
Form 4
Statement of changes in beneficial ownership
22 Mar 2024
Form 4
Statement of changes in beneficial ownership
7 Sep 2023
Form 4
Statement of changes in beneficial ownership
8 Aug 2023
Form 4
Statement of changes in beneficial ownership
7 Aug 2023
Form 4
Statement of changes in beneficial ownership
3 Aug 2023
Form 4
Statement of changes in beneficial ownership
4 Apr 2023
Form 4
Statement of changes in beneficial ownership
22 Mar 2023
Form 4
Statement of changes in beneficial ownership
6 Dec 2022
KENNEDY KEVIN
(36)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
3 Feb 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
4 Nov 2020
Form 4
Statement of changes in beneficial ownership
5 Aug 2020
KAUFMAN STEPHEN P
(36)
Expand
Form 4
OPTION EXERCISES AND SALES
2 Dec 2013
Form 4
OUTSIDE DIRECTOR RSU GRANT
6 Nov 2013
Form 4
STOCK OPTION EXERCISES
31 Oct 2013
Form 4
OPTION EXERCISES
1 Feb 2013
Form 4
OPTION EXERCISE
31 Jan 2013
Form 4
ANNUAL RSU GRANT
9 Nov 2012
Form 4
NQ EXERCISE AND SALE
17 Feb 2012
Form 4
NOVEMBER 2011 RSU GRANT AND VESTING
4 Nov 2011
Form 4
Statement of changes in beneficial ownership
3 Nov 2010
Form 4
Statement of changes in beneficial ownership
5 Nov 2009
URBANEK LIDA
(34)
Expand
Form 4
Statement of changes in beneficial ownership
24 Jul 2008
Form 4
NOV 2007 - URBANEK RSU
19 Nov 2007
Form 4
Statement of changes in beneficial ownership
1 Nov 2007
Form 4/A
Statement of changes in beneficial ownership (amendment)
1 Nov 2007
Form 4
Statement of changes in beneficial ownership
2 Aug 2007
Form 4
Statement of changes in beneficial ownership
20 Jul 2007
Form 4
PRIMARY DOCUMENT
3 May 2007
Form 4/A
Statement of changes in beneficial ownership (amendment)
1 Nov 2007
Form 4
PRIMARY DOCUMENT
30 Mar 2007
Form 4
PRIMARY DOCUMENT
15 Feb 2007
CALDERONI ROBERT
(34)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
6 Feb
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
6 Sep 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Martin Brian
(34)
Expand
Form 4
Statement of changes in beneficial ownership
10 Sep 2015
Form 4
Statement of changes in beneficial ownership
8 Sep 2015
Form 4
Statement of changes in beneficial ownership
12 Aug 2015
Form 4
Statement of changes in beneficial ownership
11 Aug 2015
Form 4
Statement of changes in beneficial ownership
10 Aug 2015
Form 4/A
Statement of changes in beneficial ownership (amendment)
10 Aug 2015
Form 4
Statement of changes in beneficial ownership
7 Aug 2015
Form 4
Statement of changes in beneficial ownership
6 Aug 2015
Form 4
Statement of changes in beneficial ownership
4 Aug 2015
Form 4
Statement of changes in beneficial ownership
11 Aug 2014
Little Teri A.
(32)
Expand
Form 4
Statement of changes in beneficial ownership
5 Jun 2020
Form 4
Statement of changes in beneficial ownership
26 Feb 2020
Form 4
Statement of changes in beneficial ownership
21 Nov 2019
Form 4
Statement of changes in beneficial ownership
13 Nov 2019
Form 4
Statement of changes in beneficial ownership
5 Nov 2019
Form 4
Statement of changes in beneficial ownership
5 Sep 2019
Form 4
Statement of changes in beneficial ownership
22 Aug 2019
Form 4
Statement of changes in beneficial ownership
7 Aug 2019
Form 4
Statement of changes in beneficial ownership
6 Aug 2019
Form 4
Statement of changes in beneficial ownership
5 Aug 2019
BINGHAM H RAYMOND
(30)
Expand
Form 4
Statement of changes in beneficial ownership
19 Nov 2007
Form 4
Statement of changes in beneficial ownership
1 Nov 2007
Form 4/A
Statement of changes in beneficial ownership (amendment)
1 Nov 2007
Form 4
Statement of changes in beneficial ownership
2 Aug 2007
Form 4
PRIMARY DOCUMENT
4 May 2007
Form 4
PRIMARY DOCUMENT
4 May 2007
Form 4
PRIMARY DOCUMENT
4 May 2007
Form 4
PRIMARY DOCUMENT
3 May 2007
Form 4/A
Statement of changes in beneficial ownership (amendment)
1 Nov 2007
Form 4/A
PRIMARY DOCUMENT
2 Apr 2007
SCHROEDER KENNETH L
(29)
Expand
Form 4
PRIMARY DOCUMENT
9 Feb 2006
Form 4
PRIMARY DOCUMENT
30 Nov 2005
Form 4
PRIMARY DOCUMENT
4 Nov 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Form 4
PRIMARY DOCUMENT
23 Aug 2005
Form 5
PRIMARY DOCUMENT
12 Aug 2005
Form 4
PRIMARY DOCUMENT
28 Feb 2005
Form 4
PRIMARY DOCUMENT
6 Dec 2004
Form 4
PRIMARY DOCUMENT
6 Dec 2004
Form 4
PRIMARY DOCUMENT
20 Oct 2004
Wilkinson Mary Beth
(28)
Expand
Form 4
Statement of changes in beneficial ownership
11 Aug
Form 4
Statement of changes in beneficial ownership
10 Aug
Form 4
Statement of changes in beneficial ownership
7 Aug
Form 4
Statement of changes in beneficial ownership
5 Aug
Form 4
Statement of changes in beneficial ownership
4 Aug
Form 4
Statement of changes in beneficial ownership
3 Aug
Form 4
Statement of changes in beneficial ownership
2 Jul
Form 4
Statement of changes in beneficial ownership
12 Aug 2025
Form 4
Statement of changes in beneficial ownership
8 Aug 2025
Form 4
Statement of changes in beneficial ownership
7 Aug 2025
ELKUS RICHARD J JR
(26)
Expand
Form 4
PRIMARY DOCUMENT
30 Nov 2005
Form 4
PRIMARY DOCUMENT
22 Nov 2005
Form 4
PRIMARY DOCUMENT
6 Sep 2005
Form 4
PRIMARY DOCUMENT
3 Aug 2005
Form 4/A
PRIMARY DOCUMENT
15 Aug 2005
Form 5
PRIMARY DOCUMENT
3 Aug 2005
Form 4
PRIMARY DOCUMENT
2 Jun 2005
Form 4
PRIMARY DOCUMENT
11 May 2005
Form 4
PRIMARY DOCUMENT
10 Mar 2005
Form 4
PRIMARY DOCUMENT
26 Jan 2005
Kirk Michael
(26)
Expand
Form 4
Statement of changes in beneficial ownership
8 Feb 2017
Form 4
Statement of changes in beneficial ownership
14 Nov 2016
Form 4
Statement of changes in beneficial ownership
27 Oct 2016
Form 4
Statement of changes in beneficial ownership
9 Sep 2016
Form 4
Statement of changes in beneficial ownership
9 Aug 2016
Form 4
Statement of changes in beneficial ownership
8 Aug 2016
Form 4
Statement of changes in beneficial ownership
4 Aug 2016
Form 4
Statement of changes in beneficial ownership
10 Feb 2016
Form 4
Statement of changes in beneficial ownership
9 Feb 2016
Form 4
Statement of changes in beneficial ownership
23 Oct 2015
TOMPKINS JON D
(24)
Expand
Form 4
PRIMARY DOCUMENT
8 Jan 2007
Form 4
PRIMARY DOCUMENT
1 Aug 2006
Form 5
PRIMARY DOCUMENT
11 Aug 2006
Form 4
PRIMARY DOCUMENT
2 May 2006
Form 4
PRIMARY DOCUMENT
1 Feb 2006
Form 4
PRIMARY DOCUMENT
7 Nov 2005
Form 4
PRIMARY DOCUMENT
29 Aug 2005
Form 4/A
PRIMARY DOCUMENT
15 Aug 2005
Form 4
PRIMARY DOCUMENT
3 Aug 2005
Form 5
PRIMARY DOCUMENT
3 Aug 2005
KISPERT JOHN H
(23)
Expand
Form 4
Statement of changes in beneficial ownership
21 Oct 2008
Form 4
Statement of changes in beneficial ownership
23 Sep 2008
Form 4
Statement of changes in beneficial ownership
7 Aug 2008
Form 4
Statement of changes in beneficial ownership
10 Aug 2007
Form 4/A
PRIMARY DOCUMENT
30 Jan 2007
Form 4
MAIN DOCUMENT DESCRIPTION
29 Dec 2006
Form 5
PRIMARY DOCUMENT
14 Aug 2006
Form 4
PRIMARY DOCUMENT
21 Feb 2006
Form 4
Statement of changes in beneficial ownership
19 Dec 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Higashi Emiko
(23)
Expand
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
13 Mar 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Feb 2018
Wang David C
(22)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
6 Nov 2017
Form 4
Statement of changes in beneficial ownership
3 Nov 2016
Form 4
Statement of changes in beneficial ownership
6 Nov 2015
Form 4
ANNUAL DIRECTOR RSU GRANT
5 Nov 2014
Form 4
OPTION EXERCISES
27 Feb 2014
Form 4
OUTSIDE DIRECTOR RSU GRANT
6 Nov 2013
Form 4
OPTION EXERCISE AND SALE
10 Sep 2013
Form 4
ANNUAL RSU GRANT
9 Nov 2012
Form 4
NOVEMBER 2011 RSU GRANT AND VESTING
4 Nov 2011
PATEL KIRAN M
(21)
Expand
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
12 Aug 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
6 Nov 2017
Form 4
Statement of changes in beneficial ownership
22 Nov 2016
Form 4
Statement of changes in beneficial ownership
3 Nov 2016
DICKSON JOHN T
(21)
Expand
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
3 Nov 2017
Form 4
Statement of changes in beneficial ownership
4 Nov 2016
Form 4
Statement of changes in beneficial ownership
6 Nov 2015
Form 4
ANNUAL DIRECTOR RSU GRANT
5 Nov 2014
Form 4
OPTION EXERCISES
31 Jul 2014
Form 4
OUTSIDE DIRECTOR RSU GRANT
6 Nov 2013
Form 4
ANNUAL RSU GRANT
9 Nov 2012
DENTINGER MARK P
(18)
Expand
Form 4
AUGUST 8 10B5-1 SALE
12 Aug 2013
Form 4
AUGUST RSU RELEASE
8 Aug 2013
Form 4
10B5-1 PLAN SALES
7 Aug 2013
Form 4
AUGUST 2013 ACTIVITIY
6 Aug 2013
Form 4
ESPP SHARE SALE
3 Jul 2013
Form 4
10B5-1 PLAN SALE
29 Jan 2013
Form 4
RSU VESTING
13 Nov 2012
Form 4
RSU RELEASE
7 Aug 2012
Form 4
AUGUST 2, 2012 RSU ACTIVITY
3 Aug 2012
Form 4
Statement of changes in beneficial ownership
5 Jan 2012
LAMB MAUREEN L
(17)
Expand
Form 4/A
PRIMARY DOCUMENT
30 Jun 2005
Form 4
PRIMARY DOCUMENT
29 Jun 2005
Form 4
PRIMARY DOCUMENT
27 May 2005
Form 4
PRIMARY DOCUMENT
6 Dec 2004
Form 4
PRIMARY DOCUMENT
23 Sep 2004
Form 4
PRIMARY DOCUMENT
9 Aug 2004
Form 5
PRIMARY DOCUMENT
10 Aug 2004
Form 4
PRIMARY DOCUMENT
27 Apr 2004
Form 4
PRIMARY DOCUMENT
29 Jan 2004
Form 4
PRIMARY DOCUMENT
28 Oct 2003
Glasser Lance A
(15)
Expand
Form 4
PRIMARY DOCUMENT
12 Feb 2007
Form 4
PRIMARY DOCUMENT
8 Jan 2007
Form 5
PRIMARY DOCUMENT
11 Aug 2006
Form 4
PRIMARY DOCUMENT
1 Mar 2006
Form 4
PRIMARY DOCUMENT
3 Nov 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Form 4
PRIMARY DOCUMENT
14 Sep 2005
Form 4
PRIMARY DOCUMENT
22 Aug 2005
Form 5
PRIMARY DOCUMENT
11 Aug 2005
Form 4
PRIMARY DOCUMENT
6 Dec 2004
Hall Jeffrey
(14)
Expand
Form 4
Statement of changes in beneficial ownership
8 Nov 2007
Form 4
Statement of changes in beneficial ownership
10 Aug 2007
Form 5
PRIMARY DOCUMENT
11 Aug 2006
Form 4
PRIMARY DOCUMENT
21 Feb 2006
Form 4
PRIMARY DOCUMENT
21 Nov 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Form 4
PRIMARY DOCUMENT
22 Aug 2005
Form 5
PRIMARY DOCUMENT
11 Aug 2005
Form 4
PRIMARY DOCUMENT
27 May 2005
Form 4
PRIMARY DOCUMENT
17 May 2005
RANGO ROBERT A.
(14)
Expand
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
3 Jul 2018
Form 4
Statement of changes in beneficial ownership
2 Nov 2017
MOORE GARY B
(14)
Expand
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
12 May 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 4
Statement of changes in beneficial ownership
5 Nov 2018
Form 4
Statement of changes in beneficial ownership
2 Nov 2017
MARKS MICHAEL E
(13)
Expand
Form 4
PRIMARY DOCUMENT
15 May 2006
Form 4
PRIMARY DOCUMENT
9 May 2006
Form 4
PRIMARY DOCUMENT
3 May 2006
Form 4
PRIMARY DOCUMENT
1 Feb 2006
Form 4
PRIMARY DOCUMENT
7 Nov 2005
Form 4
PRIMARY DOCUMENT
3 Aug 2005
Form 4/A
PRIMARY DOCUMENT
15 Aug 2005
Form 5
PRIMARY DOCUMENT
3 Aug 2005
Form 4
PRIMARY DOCUMENT
11 May 2005
Form 4
PRIMARY DOCUMENT
26 Jan 2005
NICHOLS STUART J
(13)
Expand
Form 5
PRIMARY DOCUMENT
11 Aug 2006
Form 4
PRIMARY DOCUMENT
20 Oct 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Form 5
PRIMARY DOCUMENT
11 Aug 2005
Form 4
PRIMARY DOCUMENT
23 Sep 2004
Form 4
PRIMARY DOCUMENT
9 Aug 2004
Form 5
PRIMARY DOCUMENT
10 Aug 2004
Form 4
PRIMARY DOCUMENT
27 Apr 2004
Form 4
PRIMARY DOCUMENT
29 Jan 2004
Form 4
PRIMARY DOCUMENT
28 Oct 2003
Hanley Jeneanne Michelle
(13)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
12 May
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
8 Sep 2023
Form 4
Statement of changes in beneficial ownership
15 Dec 2022
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
CAMPAGNA JOHN PETER
(12)
Expand
Form 4
PRIMARY DOCUMENT
24 Nov 2003
Form 4
PRIMARY DOCUMENT
12 Nov 2003
Form 4
PRIMARY DOCUMENT
28 Oct 2003
Form 4/A
PRIMARY DOCUMENT
1 Aug 2003
Form 4
PRIMARY DOCUMENT
31 Jul 2003
Form 5
PRIMARY DOCUMENT
7 Aug 2003
Form 4/A
PRIMARY DOCUMENT
24 Jun 2003
Form 4
PRIMARY DOCUMENT
28 May 2003
Form 4
Statement of changes in beneficial ownership
5 May 2003
Form 4
Statement of changes in beneficial ownership
28 Feb 2003
COHEN AVI
(12)
Expand
Form 4
PRIMARY DOCUMENT
8 Aug 2006
Form 5
PRIMARY DOCUMENT
11 Aug 2006
Form 4
PRIMARY DOCUMENT
16 Dec 2005
Form 4
PRIMARY DOCUMENT
27 Sep 2005
Form 5
PRIMARY DOCUMENT
12 Aug 2005
Form 4
PRIMARY DOCUMENT
20 Oct 2004
Form 4
PRIMARY DOCUMENT
23 Sep 2004
Form 4
PRIMARY DOCUMENT
9 Aug 2004
Form 5
PRIMARY DOCUMENT
10 Aug 2004
Form 4
PRIMARY DOCUMENT
27 Apr 2004
FORTINO DENNIS J
(11)
Expand
Form 4
PRIMARY DOCUMENT
27 Apr 2004
Form 4
PRIMARY DOCUMENT
30 Jan 2004
Form 4
PRIMARY DOCUMENT
29 Jan 2004
Form 4
PRIMARY DOCUMENT
28 Oct 2003
Form 4
PRIMARY DOCUMENT
30 Jul 2003
Form 4/A
PRIMARY DOCUMENT
1 Aug 2003
Form 4
PRIMARY DOCUMENT
31 Jul 2003
Form 5
PRIMARY DOCUMENT
8 Aug 2003
Form 4
PRIMARY DOCUMENT
27 May 2003
Form 4/A
PRIMARY DOCUMENT
26 Jun 2003
PENG VICTOR
(10)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
1 Feb 2019
Form 3
Initial statement of beneficial ownership
1 Feb 2019
DICKERSON GARY E
(10)
Expand
Form 4
PRIMARY DOCUMENT
27 Apr 2004
Form 4
PRIMARY DOCUMENT
29 Jan 2004
Form 4
PRIMARY DOCUMENT
28 Oct 2003
Form 4
PRIMARY DOCUMENT
18 Aug 2003
Form 4
PRIMARY DOCUMENT
31 Jul 2003
Form 4/A
PRIMARY DOCUMENT
1 Aug 2003
Form 5
PRIMARY DOCUMENT
7 Aug 2003
Form 4
PRIMARY DOCUMENT
27 May 2003
Form 4/A
PRIMARY DOCUMENT
25 Jun 2003
Form 4
Statement of changes in beneficial ownership
12 Nov 2002
YARBRO STAN
(8)
Expand
Form 4
PRIMARY DOCUMENT
27 Oct 2004
Form 4
PRIMARY DOCUMENT
27 Oct 2004
Form 4
PRIMARY DOCUMENT
23 Sep 2004
Form 4
PRIMARY DOCUMENT
9 Aug 2004
Form 5
PRIMARY DOCUMENT
10 Aug 2004
Form 4
PRIMARY DOCUMENT
27 Apr 2004
Form 4
PRIMARY DOCUMENT
29 Jan 2004
Form 3
PRIMARY DOCUMENT
14 Nov 2003
Steimberg Amichai
(8)
Expand
Form 4
Statement of changes in beneficial ownership
3 Jan 2020
Form 4
Statement of changes in beneficial ownership
12 Nov 2019
Form 4
Statement of changes in beneficial ownership
13 Sep 2019
Form 4
Statement of changes in beneficial ownership
5 Sep 2019
Form 4
Statement of changes in beneficial ownership
20 Aug 2019
Form 4
Statement of changes in beneficial ownership
7 Aug 2019
Form 4
Statement of changes in beneficial ownership
2 Jul 2019
Form 3
Initial statement of beneficial ownership
28 Mar 2019
AKINS ROBERT P
(7)
Expand
Form 4
ANNUAL RSU GRANT
9 Nov 2012
Form 4
NOVEMBER 2011 RSU GRANTS AND VESTINGS
4 Nov 2011
Form 4
Statement of changes in beneficial ownership
3 Nov 2010
Form 4
Statement of changes in beneficial ownership
5 Nov 2009
Form 4
Statement of changes in beneficial ownership
13 Nov 2008
Form 4
Statement of changes in beneficial ownership
7 May 2008
Form 3
Initial statement of beneficial ownership
7 May 2008
McMullen Michael R.
(6)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
8 Nov 2024
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
26 Jul 2023
Form 3
Initial statement of beneficial ownership
26 Jul 2023
MYERS MARIE
(6)
Expand
Form 4
Statement of changes in beneficial ownership
3 Nov 2023
Form 4
Statement of changes in beneficial ownership
4 Nov 2022
Form 4
Statement of changes in beneficial ownership
5 Nov 2021
Form 4
Statement of changes in beneficial ownership
6 Nov 2020
Form 4
Statement of changes in beneficial ownership
12 Feb 2020
Form 3
Initial statement of beneficial ownership
12 Feb 2020
Samath Jamie
(4)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
2 May 2025
Form 3
Initial statement of beneficial ownership
2 May 2025
Titinger Jorge
(4)
Expand
Form 4
Statement of changes in beneficial ownership
10 Aug 2007
Form 4
PRIMARY DOCUMENT
10 May 2007
Form 3
PRIMARY DOCUMENT
5 Jan 2007
Form 3/A
PRIMARY DOCUMENT
8 Jan 2007
Taylor Susan J.S.
(4)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 3
Initial statement of beneficial ownership
12 May 2025
Form 4
Statement of changes in beneficial ownership
12 May 2025
Pinczuk Ana G.
(4)
Expand
Form 4
Statement of changes in beneficial ownership
7 Nov 2019
Form 4
Statement of changes in beneficial ownership
9 Nov 2018
Form 3
Initial statement of beneficial ownership
3 Aug 2018
Form 4
Statement of changes in beneficial ownership
3 Aug 2018
KLA TENCOR CORP
(3)
Expand
Form 4
MAIN DOCUMENT DESCRIPTION
25 May 2007
Form 3
Initial statement of beneficial ownership
17 Jan 2007
Form 3
MAIN DOCUMENT DESCRIPTION
6 Mar 2006
Embree Tracy A
(3)
Expand
Form 4
Statement of changes in beneficial ownership
5 Nov
Form 3
Initial statement of beneficial ownership
7 Nov 2025
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
GROSS LAWRENCE A
(2)
Expand
Form 4
PRIMARY DOCUMENT
3 Apr 2007
Form 3
PRIMARY DOCUMENT
25 Oct 2006
Tsai Bin-Ming Ben
(2)
Expand
Form 4
PRIMARY DOCUMENT
15 Feb 2007
Form 3
PRIMARY DOCUMENT
3 Jan 2007
Conley Jason
(2)
Expand
Form 4
Statement of changes in beneficial ownership
7 Nov 2025
Form 3
Initial statement of beneficial ownership
7 Nov 2025
Levy Asher
(2)
Expand
Form 3
Initial statement of beneficial ownership
22 Feb 2019
Form 4
Statement of changes in beneficial ownership
22 Feb 2019
≥5% Ownership
FMR LLC
(23)
Expand
SC 13G/A
Kla Tencor Corp
10 May 2012
SC 13G/A
Kla Tencor Corp
14 Feb 2012
SC 13G/A
Kla Tencor Corp
14 Feb 2011
SC 13G/A
Kla Tencor Corp
10 Nov 2010
SC 13G/A
Kla Tencor Corp
10 Aug 2010
SC 13G/A
Kla Tencor Corp
16 Feb 2010
SC 13G
Kla Tencor Corp
10 Aug 2009
SC 13G/A
Kla Tencor Corp
10 Aug 2007
SC 13G/A
Kla Tencor Corp
14 Feb 2007
SC 13G/A
Kla Tencor Corp
14 Feb 2006
VANGUARD GROUP INC
(15)
Expand
SC 13G/A
Kla Corp
27 Mar
SC 13G/A
Kla Corp
4 Oct 2024
SC 13G/A
Kla Corp
13 Feb 2024
SC 13G/A
Kla Corp
9 Feb 2023
SC 13G/A
Kla Corp
10 Feb 2022
SC 13G/A
Kla Corp
10 Feb 2021
SC 13G/A
Kla Corp
12 Feb 2020
SC 13G/A
Kla Tencor Corp
11 Feb 2019
SC 13G/A
Kla Tencor Corp
8 Feb 2018
SC 13G/A
Kla Tencor Corp
10 Jan 2017
BlackRock Inc.
(15)
Expand
SC 13G/A
Kla Corp
25 Jan 2024
SC 13G
Kla Corp
30 Jan 2023
SC 13G/A
Kla Corp
1 Feb 2022
SC 13G/A
Kla Corp
29 Jan 2021
SC 13G/A
Kla Corp
5 Feb 2020
SC 13G/A
Kla Tencor Corp
6 Feb 2019
SC 13G/A
Kla Tencor Corp
8 Feb 2018
SC 13G/A
Kla Tencor Corp
25 Jan 2017
SC 13G/A
Kla Tencor Corp
10 Feb 2016
SC 13G/A
Kla Tencor Corp
9 Feb 2015
CAPITAL GROUP INTERNATIONAL INC
(12)
Expand
SC 13G/A
Kla Tencor Corp
10 Nov 2008
SC 13G/A
Kla Tencor Corp
1 Feb 2008
SC 13G/A
Kla Tencor Corp
12 Feb 2007
SC 13G/A
Kla Tencor Corp
9 Feb 2006
SC 13G/A
Kla Tencor Corp
14 Feb 2005
SC 13G/A
Kla Tencor Corp
10 Sep 2004
SC 13G/A
Kla Tencor Corp
13 Feb 2004
SC 13G/A
Kla Tencor Corp
14 Feb 2003
SC 13G/A
Kla Tencor Corp
10 Oct 2002
SC 13G/A
Kla Tencor Corp
11 Feb 2002
Capital World Investors
(11)
Expand
SC 13G/A
Kla Tencor Corp
10 Aug 2016
SC 13G/A
Kla Tencor Corp
12 Feb 2016
SC 13G/A
Kla Tencor Corp
10 Dec 2015
SC 13G/A
Kla Tencor Corp
13 Feb 2015
SC 13G
Kla Tencor Corp
9 Oct 2014
SC 13G/A
Kla Tencor Corp
8 Jun 2012
SC 13G/A
Kla Tencor Corp
10 Feb 2012
SC 13G/A
Kla Tencor Corp
14 Feb 2011
SC 13G/A
Kla Tencor Corp
8 Oct 2010
SC 13G/A
Kla Tencor Corp
11 Feb 2010
CAPITAL RESEARCH & MANAGEMENT CO
(10)
Expand
SC 13G/A
Kla Tencor Corp
13 Feb 2008
SC 13G/A
Kla Tencor Corp
12 Feb 2007
SC 13G/A
Kla Tencor Corp
10 Feb 2006
SC 13G/A
Kla Tencor Corp
8 Jul 2005
SC 13G/A
Kla Tencor Corp
14 Feb 2005
SC 13G/A
Kla Tencor Corp
13 Feb 2004
SC 13G/A
Kla Tencor Corp
14 Feb 2003
SC 13G/A
Kla Tencor Corp
11 Feb 2002
SC 13G/A
Kla Tencor Corp
12 Feb 2001
SC 13G
Kla Tencor Corp
11 Feb 2000
PRIMECAP MANAGEMENT CO/CA/
(10)
Expand
SC 13G/A
Kla Corp
10 Feb 2022
SC 13G/A
Kla Corp
8 Feb 2022
SC 13G/A
Kla Corp
12 Feb 2021
SC 13G/A
Kla Corp
12 Feb 2020
SC 13G/A
Kla Tencor Corp
8 Feb 2019
SC 13G/A
Kla Tencor Corp
27 Feb 2018
SC 13G/A
Kla Tencor Corp
9 Feb 2017
SC 13G/A
Kla Tencor Corp
12 Feb 2016
SC 13G/A
Kla Tencor Corp
13 Feb 2015
SC 13G
Kla Tencor Corp
7 Mar 2014
Capital Research Global Investors
(10)
Expand
SC 13G/A
Kla Tencor Corp
10 Dec 2015
SC 13G/A
Kla Tencor Corp
13 Feb 2015
SC 13G/A
Kla Tencor Corp
13 Feb 2014
SC 13G/A
Kla Tencor Corp
13 Feb 2013
SC 13G/A
Kla Tencor Corp
9 Feb 2012
SC 13G/A
Kla Tencor Corp
11 Feb 2011
SC 13G/A
Kla Tencor Corp
9 Feb 2010
SC 13G/A
Kla Tencor Corp
13 Feb 2009
SC 13G/A
Kla Tencor Corp
10 Jun 2008
SC 13G
Kla Tencor Corp
12 Feb 2008
JPMORGAN CHASE & CO
(7)
Expand
SC 13G/A
Kla Tencor Corp
7 Nov 2017
SC 13G/A
Kla Tencor Corp
19 Jan 2017
SC 13G/A
Kla Tencor Corp
19 Jan 2016
SC 13G/A
Kla Tencor Corp
7 Dec 2015
SC 13G/A
Kla Tencor Corp
15 Jan 2015
SC 13G/A
Kla Tencor Corp
7 Mar 2014
SC 13G
Kla Tencor Corp
28 Jan 2014
JENNISON ASSOCIATES LLC
(7)
Expand
SC 13G/A
Kla Tencor Corp
10 Feb 2000
SC 13G/A
Kla Tencor Corp
11 Feb 1999
SC 13G/A
Kla Tencor Corp
12 Feb 1998
SC 13G/A
Kla Instruments Corp
3 Feb 1997
SC 13G/A
Kla Instruments Corp
10 Dec 1996
SC 13G/A
Kla Instruments Corp
10 Dec 1996
SC 13G/A
Kla Instruments Corp
10 Dec 1996
PRUDENTIAL INSURANCE CO OF AMERICA
(7)
Expand
SC 13G/A
Kla Tencor Corp
23 Jan 2001
SC 13G/A
Kla Tencor Corp
31 Jan 2000
SC 13G/A
Kla Tencor Corp
29 Jan 1999
SC 13G/A
Kla Tencor Corp
9 Feb 1998
SC 13G/A
Kla Instruments Corp
6 Feb 1997
SC 13G/A
Kla Instruments Corp
10 Jun 1996
SC 13G
Kla Instruments Corp
14 Feb 1996
AXA FINANCIAL INC
(7)
Expand
SC 13G/A
Kla Tencor Corp
9 Feb 2011
SC 13G
Kla Tencor Corp
12 Feb 2010
SC 13G/A
Kla Tencor Corp
13 Feb 2007
SC 13G/A
Kla Tencor Corp
10 Jul 2006
SC 13G/A
Kla Tencor Corp
10 Apr 2006
SC 13G/A
Kla Tencor Corp
14 Feb 2006
SC 13G
Kla Tencor Corp
14 Feb 2005
KLA TENCOR CORP
(6)
Expand
SC 13D
Therma Wave Inc
18 Jan 2007
SC 13D
Ade Corp
6 Mar 2006
SC 13D
Qc Optics Inc
10 Sep 2001
SC 13D
Tencor Instruments
24 Jan 1997
SC 13D/A
Micrion Corp /Ma/
6 Jun 1996
SC 13D
Micrion Corp /Ma/
17 May 1996
GROWTH FUND OF AMERICA INC
(5)
Expand
SC 13G/A
Kla Tencor Corp
13 Feb 2013
SC 13G/A
Kla Tencor Corp
14 Feb 2012
SC 13G/A
Kla Tencor Corp
14 Feb 2011
SC 13G/A
Kla Tencor Corp
12 Feb 2010
SC 13G
Kla Tencor Corp
12 Feb 2009
CAPITAL GROUP COMPANIES INC ET AL
(5)
Expand
SC 13G
Kla Tencor Corp
9 Jul 1998
SC 13G
Kla Tencor Corp
10 Feb 1998
SC 13G/A
Kla Tencor Corp
10 Sep 1997
SC 13G/A
Kla Instruments Corp
12 Feb 1997
SC 13G
Kla Instruments Corp
9 Aug 1996
JANUS CAPITAL MANAGEMENT LLC
(4)
Expand
SC 13G/A
Kla Tencor Corp
14 Feb 2011
SC 13G/A
Kla Tencor Corp
16 Feb 2010
SC 13G/A
Kla Tencor Corp
17 Feb 2009
SC 13G
Kla Tencor Corp
14 Feb 2008
WELLINGTON MANAGEMENT GROUP LLP
(4)
Expand
SC 13G/A
Kla Corp
4 Feb 2021
SC 13G/A
Kla Corp
27 Jan 2020
SC 13G/A
Kla Tencor Corp
12 Feb 2019
SC 13G
Kla Tencor Corp
8 Feb 2018
CAPITAL GUARDIAN TRUST CO
(3)
Expand
SC 13G
Kla Tencor Corp
12 Feb 1999
SC 13G
Kla Tencor Corp
9 Nov 1998
SC 13G
Kla Tencor Corp
9 Jul 1998
NEUBERGER BERMAN LLC
(3)
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SC 13G/A
Kla Tencor Corp
11 Feb 1999
SC 13G
Kla Tencor Corp
12 Feb 1998
SC 13G
Kla Instruments Corp
11 Feb 1997
Capital International Investors
(3)
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SC 13G/A
Kla Corp
13 Feb 2023
SC 13G/A
Kla Corp
11 Feb 2022
SC 13G
Kla Corp
16 Feb 2021
PRICE T ROWE ASSOCIATES INC /MD/
(2)
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SC 13G/A
Kla Tencor Corp
6 Feb 2002
SC 13G
Kla Tencor Corp
8 Feb 2001
STATE STREET CORP
(2)
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SC 13G/A
Kla Tencor Corp
22 Feb 2016
SC 13G
Kla Tencor Corp
12 Feb 2015
PUTNAM INVESTMENTS INC
(2)
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SC 13G/A
Kla Tencor Corp
20 Feb 2001
SC 13G
Kla Tencor Corp
17 Feb 2000
TENCOR INSTRUMENTS
(1)
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SC 13D
Kla Instruments Corp
24 Jan 1997
TWENTIETH CENTURY COMPANIES INC
(1)
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SC 13G/A
Kla Instruments Corp
9 Feb 1996
CHANCELLOR CAPITAL MANAGEMENT INC
(1)
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SC 13G
Kla Instruments Corp
12 Feb 1996
VANGUARD CAPITAL MANAGEMENT LLC
(1)
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SC 13G
Kla Corp
30 Apr
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