Home

Mary Beth Wilkinson

CIK 1691769 · EVP, CLO and Secretary · last filed 2026-08-11

Mary Beth Wilkinson is an EVP, CLO and Secretary who has filed 47 SEC Form 4 insider transactions across 2 companies since 2017. The most recent filing shows the insider sold $339.8K of KLAC on Aug 11, 2026. Across all open-market trades the lifetime net is −$23.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $7.1M across reported positions. 41 SEC filings were submitted jointly with KLA TENCOR CORP.

"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.

Loading insider history…
Disclosed Exposure

$7.07M

Companies

2

Total Filings

47

Lifetime Open-Market Net

-$23.63M

Filer Profile

Reported Address
ONE TECHNOLOGY DRIVE
MILPITAS, CA 95035
Related Filers
KLA TENCOR CORP — 41 joint filings, latest 2026-08-11
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
KLAC EVP, CLO and Secretary 37,032 $180.64 $6.69M -$23.25M 28 2026-08-11
OI SVP, GC & Corporate Sec. 58,319 $6.53 $380.8K -$372.5K 6 2020-08-27

Recent Filings

47 filings
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
2026-08-11 KLAC Sell (S) −1,661 -$339.8K EDGAR
2026-08-10 KLAC Notice (144) −1,661 -$339.8K EDGAR
2026-08-10 KLAC Mixed −23,039 -$4.55M EDGAR
2026-08-07 KLAC Notice (144) −21,831 -$4.31M EDGAR
2026-08-07 KLAC Mixed +39,622 -$3.06M EDGAR
2026-08-07 KLAC Mixed +39,622 -$3.06M EDGAR
2026-08-05 KLAC Notice (144) −13,802 -$2.70M EDGAR
2026-08-05 KLAC Sell (S) −13,802 -$2.70M EDGAR
2026-08-04 KLAC Notice (144) −4,295 -$822.9K EDGAR
2026-08-04 KLAC Mixed −14,331 -$2.66M EDGAR
Showing 1–10 of 47
Page 1 of 5
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.