Mark F ONeil insider trades: Carmax (KMX) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Mark reports to the SEC
Open-market buys and sales
59 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 2, 2025 | KMX | ↑ Buy | 10,816 | $46.21 | $500K | Direct | Oct 6, 2025 (4d) |
| Sep 30, 2020 | KMX | ↑ Buy | 2,700 | $93.40 | $252K | Direct | Oct 2, 2020 (2d) |
| Jun 18, 2015 | TRAK | ↓ Sell | 50,000 | $62.95 | $3.1M | Direct | Jun 22, 2015 (4d) |
| Dec 8, 2014 | TRAK | ↓ Sell | 17,500 | $46.62 | $816K | Direct | Dec 9, 2014 (1d) |
| Dec 2, 2014 | TRAK | ↓ Sell | 14,492 | $47.53 | $689K | Direct | Dec 3, 2014 (1d) |
| Nov 28, 2014 | TRAK | ↓ Sell | 37,119 | $47.56 | $1.8M | Direct | Dec 1, 2014 (3d) |
| Nov 18, 2014 | TRAK | ↓ Sell | 16,500 | $45.25 | $747K | Direct | Nov 19, 2014 (1d) |
| Nov 3, 2014 | TRAK | ↓ Sell | 14,389 | $47.51 | $684K | Direct | Nov 5, 2014 (2d) |
| Aug 18, 2014 | TRAK | ↓ Sell | 23,000 | $45.04 | $1.0M | Direct | Aug 20, 2014 (2d) |
| Mar 3, 2014 | TRAK | ↓ Sell | 27,360 | $54.23 | $1.5M | Direct | Mar 5, 2014 (2d) |
| Feb 26, 2014 | TRAK | ↓ Sell | 3,090 | $54.55 | $169K | Direct | Feb 28, 2014 (2d) |
| Feb 24, 2014 | TRAK | ↓ Sell | 25,000 | $53.72 | $1.3M | Direct | Feb 25, 2014 (1d) |
| Jan 2, 2014 | TRAK | ↓ Sell | 35,000 | $47.83 | $1.7M | Direct | Jan 2, 2014 (0d) |
| Nov 15, 2013 | TRAK | ↓ Sell | 20,000 | $41.51 | $830K | Direct | Nov 18, 2013 (3d) |
| Sep 16, 2013 | TRAK | ↓ Sell | 20,000 | $40.33 | $807K | Direct | Sep 17, 2013 (1d) |
| Jul 15, 2013 | TRAK | ↓ Sell | 20,000 | $37.78 | $756K | Direct | Jul 16, 2013 (1d) |
| May 15, 2013 | TRAK | ↓ Sell | 20,000 | $31.39 | $628K | Direct | May 17, 2013 (2d) |
| Mar 4, 2013 | TRAK | ↓ Sell | 27,720 | $31.41 | $871K | Direct | Mar 6, 2013 (2d) |
| Mar 1, 2013 | TRAK | ↓ Sell | 2,260 | $29.05 | $66K | Direct | Mar 4, 2013 (3d) |
| Feb 25, 2013 | TRAK | ↓ Sell | 3,930 | $32.06 | $126K | Direct | Feb 27, 2013 (2d) |
| Jan 28, 2013 | TRAK | ↓ Sell | 7,594 | $32.09 | $244K | Direct | Jan 30, 2013 (2d) |
| Dec 4, 2012 | TRAK | ↓ Sell | 40,000 | $26.76 | $1.1M | Direct | Dec 4, 2012 (0d) |
| Jun 29, 2012 | TRAK | ↓ Sell | 26,900 | $29.07 | $782K | Direct | Jul 2, 2012 (3d) |
| Jun 28, 2012 | TRAK | ↓ Sell | 63,100 | $29.26 | $1.8M | Direct | Jun 28, 2012 (0d) |
| Mar 28, 2012 | TRAK | ↓ Sell | 89,593 | $30.66 | $2.7M | Direct | Mar 28, 2012 (0d) |
| Jan 31, 2012 | TRAK | ↓ Sell | 7,645 | $26.87 | $205K | Direct | Jan 31, 2012 (0d) |
| Jan 30, 2012 | TRAK | ↓ Sell | 6,000 | $29.63 | $178K | Direct | Mar 7, 2012 (37d) |
| Jan 30, 2012 | TRAK | ↓ Sell | 5,000 | $27.07 | $135K | Trusts | Jan 31, 2012 (1d) |
| Jan 17, 2012 | TRAK | ↓ Sell | 5,000 | $27.12 | $136K | Trusts | Jan 18, 2012 (1d) |
| Dec 16, 2011 | TRAK | ↓ Sell | 35,000 | $26.20 | $917K | Direct | Dec 19, 2011 (3d) |
| Jul 18, 2011 | TRAK | ↓ Sell | 35,000 | $22.26 | $779K | Direct | Jul 18, 2011 (0d) |
| May 16, 2011 | TRAK | ↓ Sell | 30,000 | $23.47 | $704K | Direct | May 18, 2011 (2d) |
| Mar 29, 2011 | TRAK | ↓ Sell | 64,941 | $21.49 | $1.4M | Direct | Mar 29, 2011 (0d) |
| Mar 3, 2011 | TRAK | ↓ Sell | 19,766 | $20.00 | $395K | Direct | Mar 7, 2011 (4d) |
| Feb 8, 2010 | TRAK | ↓ Sell | 3,616 | $17.44 | $63K | Direct | Feb 9, 2010 (1d) |
| Feb 2, 2010 | TRAK | ↓ Sell | 31,722 | $17.89 | $568K | Direct | Feb 2, 2010 (0d) |
| Aug 7, 2009 | TRAK | ↓ Sell | 50,000 | $19.75 | $988K | Direct | Aug 10, 2009 (3d) |
| Feb 25, 2009 | TRAK | ↓ Sell | 300,000 | $10.88 | $3.3M | Direct | Feb 26, 2009 (1d) |
| Feb 11, 2009 | TRAK | ↓ Sell | 3,465 | $12.59 | $44K | Direct | Feb 12, 2009 (1d) |
| Feb 2, 2009 | TRAK | ↓ Sell | 3,580 | $11.25 | $40K | Direct | Feb 3, 2009 (1d) |
| Dec 5, 2008 | TRAK | ↓ Sell | 50,000 | $11.21 | $561K | Direct | Dec 8, 2008 (3d) |
| Jul 11, 2007 | TRAK | ↓ Sell | 9,500 | $38.27 | $364K | Direct | Jul 12, 2007 (1d) |
| Jul 11, 2007 | TRAK | ↓ Sell | 7,100 | $38.82 | $276K | Direct | Jul 12, 2007 (1d) |
| Jul 11, 2007 | TRAK | ↓ Sell | 3,400 | $39.06 | $133K | Direct | Jul 12, 2007 (1d) |
| Jul 10, 2007 | TRAK | ↓ Sell | 16,404 | $39.07 | $641K | Direct | Jul 12, 2007 (2d) |
| Jul 10, 2007 | TRAK | ↓ Sell | 10,511 | $38.49 | $405K | Direct | Jul 12, 2007 (2d) |
| Jul 10, 2007 | TRAK | ↓ Sell | 8,834 | $39.33 | $347K | Direct | Jul 12, 2007 (2d) |
| Jul 10, 2007 | TRAK | ↓ Sell | 4,251 | $39.53 | $168K | Direct | Jul 12, 2007 (2d) |
| May 15, 2007 | TRAK | ↓ Sell | 7,700 | $32.57 | $251K | Direct | May 17, 2007 (2d) |
| May 15, 2007 | TRAK | ↓ Sell | 2,300 | $32.77 | $75K | Direct | May 17, 2007 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other KMX insiders
Open-market trades in the last 12 months
About Mark F ONeil's insider trades
Mark F ONeil is a director at Carmax (KMX). Since Jul 3, 2006, Mark has reported 2 open-market purchases worth $752K and 57 sales worth $39.3M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (37 filings), option exercises (36 filings), shares withheld for taxes (4 filings), shares returned to the company (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every KMX insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.