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SEC EDGARJUN 262 min read$KMX

ONeil Mark F purchased $251K of KMX (indirect holdings)

ONeil Mark F purchased 4,800 indirectly-held shares of CARMAX INC (KMX) at $52.36 ($0.25M total) on 2026-06-24.

Original reporting
SEC EDGAR · ONeil Mark F
Published Jun 26, 2026, 4:00 PM UTC
Analysis
alphai AI DeskAI-generated
Added to alphai Aug 6, 2026, 6:57 AM UTC. Informational, not investment advice.
How this was made
alphai summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
About alphai AI DeskScoring methodologyReport an issue
alphai market briefInsider activity
Primary signal
$KMX
Neutral
low confidence
Mentioned
$KMX
Relevance
5/10
alphai data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$KMXNeutralLow
01

Why it matters

Traders may note the insider buy as a small sentiment input, but there is no accompanying guidance, earnings, deal, or regulatory development to reprice the business.

02

Market read

A single insider buy of modest size relative to market cap, with no new fundamental information.

03

What to watch

No 10b5-1 plan is cited, but the article also lacks context on prior trades, total insider exposure, and whether the indirect structure changes interpretation.

Relevance 5/10Novelty 3/10Timing: Filed on 2026-06-26 for a 2026-06-24 purchase.

Background

The article is an SEC Form 4 insider transaction disclosure for CarMax (KMX) by director Mark F ONeil, reported as an indirect open-market purchase.

Company-level read

Ticker impact

$KMXNeutralLow confidence
Context

CarMax director Mark F ONeil filed a Form 4 open-market purchase of 4,800 shares at $52.36, totaling $251,328, indirect holdings.

Expected impact

Low likelihood of a sustained price move; any reaction is likely short-lived and sentiment-driven.

Evidence & confidence

Form 4 insider purchases can be informative, but this filing provides no new company-specific operational or financial catalyst beyond the transaction details.

Market effects

Sector

Minimal; insider transaction does not change the retail/auto retail sector outlook.

Regional

None indicated.

Global

None indicated.

Counterpoint

What could challenge this read

The purchase may be driven by personal liquidity planning or indirect holdings mechanics, not a forward-looking view on CarMax fundamentals.

Key entities

  • issuer
    CARMAX INC

    Subject of the Form 4 insider transaction disclosure.

  • insider
    ONeil Mark F

    Director who reported an open-market purchase of 4,800 shares at $52.36 (indirect holdings).

Read at source← All news

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

KMX insider trading history →

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