Mary Beth Wilkinson

CIK 1691769 · EVP, CLO and Secretary · last filed 2026-07-02

Mary Beth Wilkinson is an EVP, CLO and Secretary who has filed 36 SEC Form 4 insider transactions across 2 companies since 2017. The most recent filing, for KLAC, was dated Jul 2, 2026. Across all open-market trades the lifetime net is −$15.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $10.9M across reported positions.

"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

$10.88M

Companies

2

Total Filings

36

Lifetime Open-Market Net

-$15.45M

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 53,367 $194.09 $10.36M -$15.08M 21 2026-07-02
OI SVP, GC & Corporate Sec. 58,319 $9.00 $524.9K -$372.5K 6 2020-08-27

Recent Filings

36 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
2026-07-02 KLAC Mixed −24,651 -$6.96M EDGAR
2026-07-01 KLAC Notice (144) −14,392 -$4.11M EDGAR
2025-08-12 KLAC Sell (S) −1,022 -$933.1K EDGAR
2025-08-08 KLAC Notice (144) −1,022 -$933.1K EDGAR
2025-08-08 KLAC Mixed +6,420 -$681.1K EDGAR
2025-08-07 KLAC Mixed −3,360 -$3.08M EDGAR
2025-08-05 KLAC Notice (144) −1,920 -$1.76M EDGAR
2025-08-05 KLAC Mixed −1,200 -$1.07M EDGAR
2025-08-05 KLAC Tax (F) −136 -$119.8K EDGAR
2025-08-04 KLAC Notice (144) −763 -$684.2K EDGAR
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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.