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KLA TENCOR CORP

CIK 319201 · last filed 2007-05-25

KLA TENCOR CORP is a corporate insider who has filed 1 SEC Form 4 insider transactions across 1 company since 2007. The most recent filing shows the insider bought $72.6M of TWAV on May 25, 2007. Across all open-market trades the lifetime net is +$72.6M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $48.8M across reported positions. The firm reports its address in Milpitas, CA. 167 SEC filings were submitted jointly with RICHARD P WALLACE.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$48.76M

Companies

1

Total Filings

1

Lifetime Open-Market Net

$72.64M

Filer Profile

Reported Address
ONE TECHNOLOGY DRIVE
MILPITAS, CA 95035
Phone
(408) 875-3000
State of Incorporation
DE
Formerly Known As
KLA TENCOR CORP (1997–2019)
KLA INSTRUMENTS CORP (1994–1997)
Related Filers
RICHARD P WALLACE — 167 joint filings, latest 2026-08-12
Virendra A Kirloskar — 140 joint filings, latest 2026-08-11
Bren D. Higgins — 126 joint filings, latest 2026-08-13
Ahmad A. Khan — 102 joint filings, latest 2026-08-12
Brian Lorig — 91 joint filings, latest 2026-08-14
Bobby R Bell — 68 joint filings, latest 2018-02-05
EDWARD W BARNHOLT — 48 joint filings, latest 2022-08-12
Brian M. Trafas — 47 joint filings, latest 2020-02-03
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
TWAV 10%+ Owner 40,300,868 $1.21 $48.76M $72.64M 1 2007-05-25

Recent Filings

1 filing
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2007-05-25 TWAV Buy (P) +44,026,811 $72.64M EDGAR
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.