Mark F ONeil

Director · CarMax

Mark F ONeil (Director) filed 1 Form 4 report in the trailing twelve months (1 purchase, 0 sales), most often in CarMax, Inc. (KMX). Across 1 priced purchase filing, the average 21-session return was +11.5% from execution and +11.3% from disclosure (delay-adjusted; derived). The largest single filing was $503K of KMX (9,600 sh across 2 lots, as filed), executed Jun 24. Data as of Nov 8 2026.

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Return, ttmiAverage return per filing, trailing twelve months

+11.5%

avg across 1 priced filings

Delay-adjustediThe same average, entered at disclosure dates

+11.3%

same 1 filings, from disclosure

Filings, ttm

1 buys · 0 sells

Median delay

execution → disclosure

Volume, ttmiDollar value disclosed in the trailing twelve months

$503K

shares × price, as filed

Last traded

Jun 24

Filed Jun 26

Median ADV $193.9M across their filed names

Open performance→

Volume by month

Buys $1.0M Sells $0

Shares × price, as filed · by filing month · past 24 months

Sectors filed on

Consumer Cyclical 1 filing

Sector per market data · by filing · past 12 months

Most traded names

KMX

CarMax, Inc. KMX · 2 buys · 0 sells 2 filings

Recent filings

KMXPURCHASE CarMax, Inc. View filing → $503K
9,600 sh across 2 lots
Exec Jun 24
Filed Jun 26 · 4:13 PM ET KMXPURCHASE CarMax, Inc. View filing → $500K
10,816 sh × $46.21
Exec Oct 2 2025
Filed Oct 6 2025 · 4:11 PM ET