ONeil Mark F purchased $251K of KMX

ONeil Mark F purchased 4,800 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.
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

This is a disclosed insider purchase: 4,800 shares at $52.36 for about $251k, with holdings after the trade of 29,490 shares.

02

Market read

Traders may note insider buying, but the disclosure alone does not provide a new fundamental catalyst.

03

What to watch

The article does not state whether the director has a broader pattern of buying/selling, nor does it provide any linkage to company fundamentals or upcoming events.

Relevance 5/10Novelty 3/10Timing: filed 2026-06-26, transaction dated 2026-06-24

Background

The article is a SEC Form 4 insider transaction disclosure for CarMax (KMX).

Company-level read

Ticker impact

$KMXNeutralLow confidence
Context

CarMax director ONeil Mark F filed a Form 4 open-market purchase of 4,800 shares at $52.36 on 2026-06-24.

Expected impact

Limited near-term impact; any effect is likely sentiment-only unless follow-on filings or company news emerge.

Evidence & confidence

Form 4 insider buys can be informative, but this disclosure lacks additional context (no 10b5-1 plan, no accompanying operational or guidance change) and the article provides only transaction details.

Market effects

No sector-level implications; this is company-specific insider activity.

None indicated.

None indicated.

Counterpoint

Insider open-market buys are often routine and can reflect diversification or personal liquidity needs rather than a bullish view.

Key entities

  • CarMax Inc

    Subject of the Form 4 insider transaction disclosure.

  • ONeil Mark F

    Director who purchased 4,800 shares in an open-market transaction.

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.

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