Insider profile

ONeil Mark F

This page tracks every SEC Form 4 filing since April 2023 by ONeil Mark F: 7 transactions in total, including 3 open-market purchases and 0 sales. Each record is parsed directly from the original filing, with amendments reconciled so a corrected filing never double-counts.

Activity summary

No insider transactions in the last 30 days. The most recent was on June 26, 2026, when ONeil Mark F bought 3,696 shares. The full history is listed below.

Quarterly balance

Buy and sell value by quarter, Q2 23 to Q2 26. ONeil Mark F has been a net buyer across the period shown.

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $503K.

Track record

$1.0M

Total purchased

Total sold

3B · 0S transactions

Net buyer

Overall direction

Most active in

KMX3B

Largest trade: $500K in KMX (Oct 2025) in last 7Filing history: Jun 2023 — Jun 2026Under a 10b5-1 plan: 0%Full history: 7 filings

Scorecard

Not enough buys to score this insider yet.

Scoring needs at least five open-market purchases with a matured return window. This insider has 1 so far, so any figure would say more about the sample than about them. See insiders who do have a record.

Transaction History

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

Date	Insider	Company	Type	Shares	Price	Value	1d	1w	1m	3m	6m
Jun 26, 2026	ONeil Mark F	KMX	Award	3,696	—	—	-0.5%	-3.6%	+11.2%	—	—
Jun 24, 2026	ONeil Mark F	KMX	Purchase	4,800	$52.36	$251K	+0.7%	-4.8%	+11.6%	—	—
Jun 24, 2026	ONeil Mark F	KMX	Purchase	4,800	$52.36	$251K	+0.7%	-4.8%	+11.6%	—	—
Oct 2, 2025	ONeil Mark F	KMX	Purchase	10,816	$46.21	$500K	-4.2%	-6.7%	-12.9%	-12.6%	-5.5%
Jun 30, 2025	ONeil Mark F	KMX	Award	2,753	—	—	-1.3%	-6.5%	-21.8%	-35.7%	-46.0%

2 more transactions hidden

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Reading an insider's Form 4 history

Corporate insiders — directors, officers, and holders of more than 10% of a company's stock — must report their trades to the SEC on Form 4 within two business days. Looking at one insider's filings over time shows whether they tend to buy on the open market (a discretionary use of their own money, generally the strongest signal), sell, or simply receive and exercise equity awards as compensation.

The track record above measures how this insider's past open-market purchases performed in the months after each filing. Trades made under a pre-scheduled Rule 10b5-1 plan are flagged because they carry no timing signal. To pull any insider's full history programmatically, see the insider trading API or our guide to reading Form 4 filings.