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NASDAQ · Technology · Holders

KLA Corp. (KLAC) Institutional Ownership & Insider Trading History

Top KLAC institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.

Section freshness

Prices as of Sep 29, 9:30 AM EDT · Fundamentals checked Sep 29, 8:36 AM EDT · Statements Jun 30, 2026

Ownership read

KLAC insider transaction activity: Net selling.

Blackrock Inc. is the largest institutional holder. 39 sales and 0 purchases appear in the recent Form 4 filings. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.

Review insider tradesView institutions

Insider flow

KLAC

Purchases0
Sales478.46K

Directional bars ignore awards, gifts, conversions, and tax withholding rows.

Top holder

126.20M

Blackrock Inc.

Insider transaction activity

Net selling

$176.15M sold / $0.0000 bought

Observations shown

87

10 holder / 77 insider

Holder rows
10
Yahoo Finance · Filing dates shown per row
Increased / initiated
6
4 decreased · provider-reported changes
Insider rows
77
Yahoo Finance · Filing dates shown per row

Ownership concentration and transaction activity

Top 10 reported holders
41.35% outstanding
Changes with share-count history
Prior-position data unavailable
New / exited positions
0 / 0 explicitly reported
Largest increase with share-count history
Prior share counts unavailable

Reported-holder cohort only; absence from a limited provider list does not establish an exit. Changes are provider-reported and are only comparable quarter over quarter when the position periods match.

Net shares sold: 478,461

Sale-code S shares minus purchase-code P shares in this sample. Includes disclosed plans and unknown plan status; excludes grants, gifts, exercises and withholding. This is activity, not sentiment.

  • Purchase / sale; plan unknown: 39
  • Grant: 32
  • Gift: 6

Top 10 institutional holders

KLA Corp. (KLAC) institutional ownership

Ranked by reported share count, with position changes and separate position and filing dates where ownership data supplies them.

KLA Corp. (KLAC) institutional ownership
#Institution% heldSharesChange %Position / filing date
1
Blackrock Inc.
9.67%126.20M+0.19%Position as of Jun 30, 2026Filing date unknown
2
Vanguard Capital Management LLC
6.54%85.32M+0.15%Position as of Jun 30, 2026Filing date unknown
3
State Street Corporation
4.82%62.89M+2.21%Position as of Jun 30, 2026Filing date unknown
4
Capital World Investors
3.47%45.32M+10.96%Position as of Jun 30, 2026Filing date unknown
5
Invesco Ltd.
3.44%44.85M+1.63%Position as of Jun 30, 2026Filing date unknown
6
FMR, LLC
3.30%43.01M-2.29%Position as of Jun 30, 2026Filing date unknown
7
Vanguard Portfolio Management LLC
3.02%39.39M-2.24%Position as of Jun 30, 2026Filing date unknown
8
Geode Capital Management, LLC
2.80%36.49M-0.66%Position as of Jun 30, 2026Filing date unknown
9
Capital International Investors
2.72%35.56M+30.34%Position as of Jun 30, 2026Filing date unknown
10
Primecap Management Company
1.57%20.54M-15.75%Position as of Jun 30, 2026Filing date unknown
Showing 10 of 10 matching institutional rows.

Recent insider transactions

KLA Corp. (KLAC) Form 4 filings

Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.

KLA Corp. (KLAC) Form 4 insider transactions
#Insider% companyActionSharesTransaction date
1
WALLACE RICHARD P
Chief Executive Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

72.02KSep 15, 2026
2
LORIG BRIAN W.
Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

59.59KAug 13, 2026
3
HIGGINS BREN D.
Chief Financial Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

31.50KAug 12, 2026
4
WALLACE RICHARD P
Chief Executive Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

87.57KAug 11, 2026
5
KHAN AHMAD A
Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

33.18KAug 11, 2026
6
WILKINSON MARY BETH
Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

1.66KAug 10, 2026
7
KIRLOSKAR VIRENDRA A
Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

529Aug 10, 2026
8
WILKINSON MARY BETH
Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

21.83KAug 7, 2026
9
KIRLOSKAR VIRENDRA A
Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

2.40KAug 7, 2026
10
WALLACE RICHARD P
Chief Executive Officer
0.04%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

487.44KAug 6, 2026
11
KIRLOSKAR VIRENDRA A
Officer
<0.01%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

11.09KAug 6, 2026
12
KHAN AHMAD A
Officer
0.01%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

174.31KAug 6, 2026
Showing 12 of 77 matching Form 4 rows. Percent of company uses current shares outstanding.

Frequently asked

Common questions.

Who are the largest KLAC shareholders?

Blackrock Inc. is the largest reported institutional holder of KLAC, with 126.20 million shares, or about 9.67% of shares outstanding.

What does the institutional filing activity show for KLAC?

KLA Corp. has 10 institutional rows on file: 6 increased or initiated positions and 4 reduced them.

What insider transactions are available for KLAC?

TECHi shows 77 dated KLAC insider transactions through Sep 15, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.

Are KLAC insiders buying or selling?

The displayed KLAC activity reads Net selling: 39 sales and 0 purchases. Other transaction types remain separate.

Who is the most active reported KLAC insider?

WALLACE RICHARD P has the largest absolute share movement in the displayed KLAC filing rows, totaling 764,795 shares. The action labels provide the transaction context.

All data sources

Search the dated figures used for this view. Each entry identifies its units, reporting period and calculation status.

How to use this page

Use this to check who owns the float and whether insiders are active.

Best for Institutional concentration, insider transaction pattern, and float context.

Weak when Filings are delayed or transactions are administrative rather than economic.

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