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KLAC · KLA Corp

Technology · −5.0% on Oct 16

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Updated Oct 17 · 6 feeds behind: Insider filings, 2 days, and 5 more · Every feed →

On this page

The market view

Price chart

The interactive KLAC chart (by TradingView) loads here.

Our take

2 rules fired on KLAC

In short: none of these rules has solid or some evidence yet, so they show no clear lean on KLAC.

How each did in past tests, against similar stocks over 3 months. Past results don't predict future ones.

The 0–100 score for KLAC, and which of these rules are open on it right now
Members see one number for how strongly these rules agree on KLAC, and the day each rule fired. Better-tested rules count more, and so do different kinds of filings that point the same way.
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Compare with this company’s history

Is disclosure activity unusual?

See how many different insiders or members of Congress reported purchases or sales of KLAC. Each bar covers 28 days, by disclosure date. Several trades by one person count once in each group and period.

Latest period: Sep 21, 2026–Oct 18, 2026 · UTC dates · today is excluded

Congress purchases

Sparse history

Only 1 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual.

Latest 28 days
0
Earlier median
0
Earlier range
0–2
Distinct filers per 28 daysScale: 0–2
Oct 20, 2025Oct 18, 2026
Earlier periodsLatest 28 daysEarlier median 0

Who appears in the latest period?

No named filers on file for this period.

Up to three filers; one example disclosure each.

Inspect this period’s filings

The history behind this view

First stored company disclosure: May 11, 2020. Newest disclosure across this feed: Oct 15, 2026.

Earlier periods in the comparison: 12. Outlined periods are missing data, so they are left out of the comparison. The chart scale changes with the category.

Exact counts, dates and filings for all four categories
Insider purchases · Short history

Only 3 earlier periods are on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 0; range: 0–0.

Insider purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 20260Partial; excluded
Jun 29, 2026–Jul 26, 20260Within stored history
Jul 27, 2026–Aug 23, 20260Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Insider sales · Short history

Only 3 earlier periods are on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 3; range: 1–6.

Insider sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 20261Partial; excluded
Jun 29, 2026–Jul 26, 20263Within stored history
Jul 27, 2026–Aug 23, 20266Within stored history
Aug 24, 2026–Sep 20, 20261Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Congress purchases · Sparse history

Only 1 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual. Earlier median: 0; range: 0–2.

Congress purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 20250Within stored history
Nov 17, 2025–Dec 14, 20250Within stored history
Dec 15, 2025–Jan 11, 20260Within stored history
Jan 12, 2026–Feb 8, 20260Within stored history
Feb 9, 2026–Mar 8, 20260Within stored history
Mar 9, 2026–Apr 5, 20260Within stored history
Apr 6, 2026–May 3, 20260Within stored history
May 4, 2026–May 31, 20260Within stored history
Jun 1, 2026–Jun 28, 20260Within stored history
Jun 29, 2026–Jul 26, 20262Within stored history
Jul 27, 2026–Aug 23, 20260Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Congress sales · Sparse history

Only 2 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual. Earlier median: 0; range: 0–1.

Congress sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 20250Within stored history
Nov 17, 2025–Dec 14, 20250Within stored history
Dec 15, 2025–Jan 11, 20260Within stored history
Jan 12, 2026–Feb 8, 20260Within stored history
Feb 9, 2026–Mar 8, 20260Within stored history
Mar 9, 2026–Apr 5, 20260Within stored history
Apr 6, 2026–May 3, 20261Within stored history
May 4, 2026–May 31, 20260Within stored history
Jun 1, 2026–Jun 28, 20260Within stored history
Jun 29, 2026–Jul 26, 20260Within stored history
Jul 27, 2026–Aug 23, 20261Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
How to read this comparison

The median is the middle count in up to 12 earlier, non-overlapping 28-day periods; the range runs from the smallest to the largest count. The latest period is excluded from both. A comparison needs at least 6 earlier periods, including 3 with activity. The feed’s latest disclosure must be within 7 days of the current period’s end. This freshness check does not verify complete collection.

Insiders include individuals and reporting entities; only purchase and sale codes enter this view. Congress counts reporting members, including their disclosed family transactions. The same filer can appear in purchases and sales, so these categories should not be added into a net count.

These are stored disclosures, not a complete measure of trading. Reporting delays and collection gaps can change the comparison. More activity does not identify a motive or predict a stock’s return.

Company timeline

What has been happening?

May 1, 2026–Oct 16, 2026. Select a month in a category to inspect its records.

Company filings

Insiders

Public officials

Insiders · Sep 2026

  1. Disclosed
    Richard P Wallace · Sale

    Transaction dated Sep 15, 2026

  2. Filed
All 30 records in this snapshot
  1. Disclosed
    Richard P Wallace · Sale

    Transaction dated Sep 15, 2026

  2. Filed
  3. Disclosed
    Brian Lorig · Sale

    Transaction dated Aug 13, 2026

  4. Disclosed
    Bren D. Higgins · Sale

    Transaction dated Aug 12, 2026

  5. Filed
  6. Disclosed
    Ahmad A. Khan · Sale

    Transaction dated Aug 11, 2026

  7. Filed
  8. Disclosed
    Richard P Wallace · Sale

    Transaction dated Aug 11, 2026

  9. Disclosed
    Mary Beth Wilkinson · Sale

    Transaction dated Aug 10, 2026

  10. Filed
  11. Filed
  12. Disclosed
    Virendra A Kirloskar · Sale

    Transaction dated Aug 10, 2026

  13. Disclosed
    Mary Beth Wilkinson · Sale

    Transaction dated Aug 7, 2026

  14. Disclosed
    Virendra A Kirloskar · Sale

    Transaction dated Aug 7, 2026

  15. Disclosed
    Mary Beth Wilkinson · Sale

    Transaction dated Aug 5, 2026

  16. Disclosed
    Tommy Tuberville · Sale

    Transaction dated May 3, 2024

  17. Disclosed
    Virendra A Kirloskar · Sale

    Transaction dated Aug 5, 2026

  18. Disclosed
    Mary Beth Wilkinson · Sale

    Transaction dated Aug 4, 2026

  19. Disclosed
    Virendra A Kirloskar · Sale

    Transaction dated Aug 4, 2026

  20. Filed
  21. Filed
  22. Disclosed
    Alan Armstrong · Purchase

    Transaction dated Mar 27, 2026

  23. Disclosed
    Bren D. Higgins · Sale

    Transaction dated Jul 2, 2026

  24. Disclosed
    Virendra A Kirloskar · Sale

    Transaction dated Jul 2, 2026

  25. Disclosed
    Mary Beth Wilkinson · Sale

    Transaction dated Jul 1, 2026

  26. Disclosed
    Michael A. Rulli · Purchase

    Transaction dated Jul 1, 2026

  27. Disclosed
    Richard P Wallace · Sale

    Transaction dated Jun 11, 2026

  28. Filed
  29. Filed
  30. Disclosed
    Lizzie Fletcher · Sale

    Transaction dated Apr 8, 2026

Month counts include every record on file. The lists show the newest records on this page. A dash means none on file that month. Trades use disclosure dates; contract dates follow the source record. Nearby events do not establish the cause of a price move.

Who's buying and selling · last 90 days

Congress

1 member bought, 1 sold · 2 Rep

  1. ▼ SELLTommy Tuberville Rep · Senate · ALKLAC KLA Corp$1K–$15Kdisclosed Aug 5 · filed 824 days after the trade · late
  2. ▲ BUYAlan Armstrong Rep · Senate · OKKLAC KLA Corp$1K–$15Kdisclosed Jul 21 · filed 116 days after the trade · late 1 rule fired
See every Congress trade on KLAC →

Company insiders

0 buys · 13 sells · $65.4M sold

  1. ▼ SELLRichard P Wallace President and CEOKLAC KLA Corp$12.4Mdisclosed Sep 16 · filed 1 day after the trade
  2. ▼ SELLBrian Lorig EVP, KLA Global ServicesKLAC KLA Corp$12.4Mdisclosed Aug 14 · filed 1 day after the trade
  3. ▼ SELLBren D. Higgins EVP & Chief Financial OfficerKLAC KLA Corp$6.6Mdisclosed Aug 13 · filed 1 day after the trade
  4. ▼ SELLAhmad A. Khan President, Semi. Prod. & Cust.KLAC KLA Corp$6.6Mdisclosed Aug 12 · filed 1 day after the trade
  5. ▼ SELLRichard P Wallace President and CEOKLAC KLA Corp$17.4Mdisclosed Aug 12 · filed 1 day after the trade
  6. ▼ SELLVirendra A Kirloskar SVP & Chief Accounting OfficerKLAC KLA Corp$108Kdisclosed Aug 11 · filed 1 day after the trade
  7. ▼ SELLMary Beth Wilkinson EVP, CLO and SecretaryKLAC KLA Corp$340Kdisclosed Aug 11 · filed 1 day after the trade
  8. ▼ SELLMary Beth Wilkinson EVP, CLO and SecretaryKLAC KLA Corp$4.3Mdisclosed Aug 10 · filed 3 days after the trade
  9. ▼ SELLVirendra A Kirloskar SVP & Chief Accounting OfficerKLAC KLA Corp$475Kdisclosed Aug 10 · filed 3 days after the trade
  10. ▼ SELLMary Beth Wilkinson EVP, CLO and SecretaryKLAC KLA Corp$2.7Mdisclosed Aug 5 · filed the same day
See every insider trade on KLAC →

Filings & events

Company filings (8-K) 63

Events the company must report to the SEC within days — results, deals, departures, restatements.

What it files 8-Ks about

  • Other events · item 8.0112
  • Quarterly or yearly results · item 2.0210
  • Directors or officers joined, left or got new pay · item 5.024
  • Shared information with investors · item 7.013
  • Shareholder vote results · item 5.072
  • Signed a major agreement · item 1.012

Filing red flags 2

Warning signs in the company's own SEC filings — going-concern doubts, control weaknesses, staff comment letters, late filings, restatements, Wells notices, clinical holds, dividend cuts.

Lobbying 13

Lobbying reports filed with the Senate for the company.

$2.4M across 13 reports

Issues named in the most reports

  • Taxation/Internal Revenue Code 13
  • Trade (domestic/foreign) 13
  • Computer Industry 6

Planned insider sales (Form 144) 58

Notices insiders file before they sell certain shares, such as ones they got straight from the company.

13 in the last 90 days · 58 notices on file

The notices on file don't give the sale's size; each sale shows up under company insiders once it is reported.

5% owners (13D / 13G) 1

Investors who reported owning 5% or more — 13D for owners who may push for changes, 13G for owners who just hold.

Push for changes, or just hold?

  • 13G, just holds: 1 filing

Filed by Vanguard Capital Management LLC

Biggest named funds (13F)

The largest KLAC holdings among the well-known funds whose quarterly 13F filings we read — opens here.

Every disclosed trade on KLAC

  1. ▼ SELLRichard P Wallace President and CEOKLAC KLA Corp$12.4Mdisclosed Sep 16 · filed 1 day after the trade
  2. ▼ SELLBrian Lorig EVP, KLA Global ServicesKLAC KLA Corp$12.4Mdisclosed Aug 14 · filed 1 day after the trade
  3. ▼ SELLBren D. Higgins EVP & Chief Financial OfficerKLAC KLA Corp$6.6Mdisclosed Aug 13 · filed 1 day after the trade
  4. ▼ SELLAhmad A. Khan President, Semi. Prod. & Cust.KLAC KLA Corp$6.6Mdisclosed Aug 12 · filed 1 day after the trade
  5. ▼ SELLRichard P Wallace President and CEOKLAC KLA Corp$17.4Mdisclosed Aug 12 · filed 1 day after the trade
  6. ▼ SELLVirendra A Kirloskar SVP & Chief Accounting OfficerKLAC KLA Corp$108Kdisclosed Aug 11 · filed 1 day after the trade
  7. ▼ SELLMary Beth Wilkinson EVP, CLO and SecretaryKLAC KLA Corp$340Kdisclosed Aug 11 · filed 1 day after the trade
  8. ▼ SELLMary Beth Wilkinson EVP, CLO and SecretaryKLAC KLA Corp$4.3Mdisclosed Aug 10 · filed 3 days after the trade
  9. ▼ SELLVirendra A Kirloskar SVP & Chief Accounting OfficerKLAC KLA Corp$475Kdisclosed Aug 10 · filed 3 days after the trade
  10. ▼ SELLMary Beth Wilkinson EVP, CLO and SecretaryKLAC KLA Corp$2.7Mdisclosed Aug 5 · filed the same day
  11. ▼ SELLVirendra A Kirloskar SVP & Chief Accounting OfficerKLAC KLA Corp$881Kdisclosed Aug 5 · filed the same day
  12. ▼ SELLTommy Tuberville Rep · Senate · ALKLAC KLA Corp$1K–$15Kdisclosed Aug 5 · filed 824 days after the trade · late
  13. ▼ SELLMary Beth Wilkinson EVP, CLO and SecretaryKLAC KLA Corp$823Kdisclosed Aug 4 · filed the same day
  14. ▼ SELLVirendra A Kirloskar SVP & Chief Accounting OfficerKLAC KLA Corp$300Kdisclosed Aug 4 · filed the same day
  15. ▲ BUYAlan Armstrong Rep · Senate · OKKLAC KLA Corp$1K–$15Kdisclosed Jul 21 · filed 116 days after the trade · late 1 rule fired
  16. ▼ SELLBren D. Higgins EVP & Chief Financial OfficerKLAC KLA Corp$7.4Mdisclosed Jul 6 · filed 4 days after the trade
  17. ▼ SELLVirendra A Kirloskar SVP & Chief Accounting OfficerKLAC KLA Corp$52.1Kdisclosed Jul 6 · filed 4 days after the trade
  18. ▼ SELLMary Beth Wilkinson EVP, CLO and SecretaryKLAC KLA Corp$4.1Mdisclosed Jul 2 · filed 1 day after the trade
  19. ▲ BUYMichael A. Rulli Rep · House · OHKLAC KLA Corp$1K–$15Kdisclosed Jul 1 · filed the same day
  20. ▼ SELLRichard P Wallace President and CEOKLAC KLA Corp$10Mdisclosed Jun 11 · filed the same day
  21. ▼ SELLLizzie Fletcher Dem · House · TXKLAC KLA Corp$1K–$15Kdisclosed May 1 · filed 23 days after the trade
  22. ▼ SELLLizzie Fletcher Dem · House · TXKLAC KLA Corp$1K–$15Kdisclosed Apr 13 · filed 5 days after the trade
  23. ▼ SELLVal T. Hoyle Dem · House · ORKLAC KLA Corp$1K–$15Kdisclosed Sep 23, 2025 · filed the same day
  24. ▲ BUYVal T. Hoyle Dem · House · ORKLAC KLA Corp$1K–$15Kdisclosed Sep 11, 2025 · filed 317 days after the trade · late
  25. ▼ SELLVal T. Hoyle Dem · House · ORKLAC KLA Corp$1K–$15Kdisclosed Sep 11, 2025 · filed 135 days after the trade · late
See all 37 trades on KLAC →
People & votes

Which members of Congress traded KLAC, sponsored bills that touch it and voted on them — opens here.