John Steinhardt
Insider
First SEC filing: Nov. 19, 2004 · Latest: Nov. 19, 2004
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 9, 2020 | MKTX | G | 961 | · | · | 21,313 Direct | -4.31% | Disposed | (price as of 2026-10-02) |
| June 11, 2020 | MKTX | A | 238 | · | · | 22,274 Direct | +1.08% | Acquired | (price as of 2026-10-02) |
| July 30, 2019 | MKTX | A | 324 | · | · | 22,036 Direct | +1.49% | Acquired | (price as of 2026-10-02) |
| Feb. 5, 2019 | MKTX | M | 3,187 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 5, 2019 | MKTX | S | 3,187 | $215.62 | $687,181 | 21,712 Direct | -12.80% | Disposed | -23.9% (price as of 2026-10-02) |
| Feb. 5, 2019 | MKTX | M | 3,187 | $10.77 | $34,324 | 24,899 Direct | +14.68% | Acquired | 1424.0% (price as of 2026-10-02) |
| Nov. 9, 2018 | MKTX | G | 2,500 | · | · | 21,712 Direct | -10.33% | Disposed | (price as of 2026-10-02) |
| Aug. 8, 2018 | MKTX | A | 598 | · | · | 24,212 Direct | +2.53% | Acquired | (price as of 2026-10-02) |
| Nov. 14, 2017 | MKTX | M | 4,225 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Nov. 14, 2017 | MKTX | S | 4,225 | $174.00 | $735,150 | 23,614 Direct | -15.18% | Disposed | -5.7% (price as of 2026-10-02) |
| Nov. 14, 2017 | MKTX | M | 4,225 | $9.72 | $41,067 | 27,839 Direct | +17.89% | Acquired | 1588.7% (price as of 2026-10-02) |
| Aug. 10, 2017 | MKTX | A | 518 | · | · | 23,614 Direct | +2.24% | Acquired | (price as of 2026-10-02) |
| Feb. 7, 2017 | MKTX | M | 2,500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 7, 2017 | MKTX | S | 2,500 | $190.04 | $475,100 | 23,096 Direct | -9.77% | Disposed | -13.6% (price as of 2026-10-02) |
| Feb. 7, 2017 | MKTX | M | 2,500 | $16.99 | $42,475 | 25,596 Direct | +10.82% | Acquired | 866.1% (price as of 2026-10-02) |
| Nov. 21, 2016 | MKTX | G | 7,928 | · | · | 23,096 Direct | -25.55% | Disposed | (price as of 2026-10-02) |
| Aug. 3, 2016 | MKTX | A | 636 | · | · | 31,024 Direct | +2.09% | Acquired | (price as of 2026-10-02) |
| March 1, 2016 | MKTX | M | 5,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 1, 2016 | MKTX | M | 5,000 | $9.30 | $46,500 | 30,388 Direct | +19.69% | Acquired | 1664.9% (price as of 2026-10-02) |
| Aug. 6, 2015 | MKTX | A | 972 | · | · | 25,388 Direct | +3.98% | Acquired | (price as of 2026-10-02) |
| March 10, 2015 | MKTX | G | 4,589 | · | · | 24,416 Direct | -15.82% | Disposed | (price as of 2026-10-02) |
| March 9, 2015 | MKTX | M | 5,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 9, 2015 | MKTX | M | 5,000 | $10.04 | $50,200 | 29,005 Direct | +20.83% | Acquired | 1534.9% (price as of 2026-10-02) |
| Aug. 8, 2014 | MKTX | A | 1,604 | · | · | 24,005 Direct | +7.16% | Acquired | (price as of 2026-10-02) |
| April 29, 2014 | MKTX | M | 8,800 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| April 29, 2014 | MKTX | S | 8,800 | $54.03 | $475,464 | 22,401 Direct | -28.20% | Disposed | 203.8% (price as of 2026-10-02) |
| April 29, 2014 | MKTX | M | 8,800 | $11.00 | $96,800 | 31,201 Direct | +39.28% | Acquired | 1392.2% (price as of 2026-10-02) |
| April 28, 2014 | MKTX | M | 1,200 | · | · | 8,800 Direct | -12.00% | Disposed | (price as of 2026-10-02) |
| April 28, 2014 | MKTX | S | 1,200 | $54.98 | $65,976 | 22,401 Direct | -5.08% | Disposed | 198.5% (price as of 2026-10-02) |
| April 28, 2014 | MKTX | M | 1,200 | $11.00 | $13,200 | 23,601 Direct | +5.36% | Acquired | 1392.2% (price as of 2026-10-02) |
| July 29, 2013 | MKTX | G | 10,475 | · | · | 22,401 Direct | -31.86% | Disposed | (price as of 2026-10-02) |
| July 26, 2013 | MKTX | A | 1,627 | · | · | 32,876 Direct | +5.21% | Acquired | (price as of 2026-10-02) |
| July 27, 2012 | MKTX | A | 2,553 | · | · | 31,249 Direct | +8.90% | Acquired | (price as of 2026-10-02) |
| July 29, 2011 | MKTX | A | 2,870 | · | · | 28,696 Direct | +11.11% | Acquired | (price as of 2026-10-02) |
| July 30, 2010 | MKTX | A | 4,923 | · | · | 25,826 Direct | +23.55% | Acquired | (price as of 2026-10-02) |
| July 30, 2009 | MKTX | M | 3,187 | · | · | 3,187 Direct | · | Acquired | (price as of 2026-10-02) |
| July 30, 2009 | MKTX | A | 4,178 | · | · | 20,903 Direct | +24.98% | Acquired | (price as of 2026-10-02) |
| Aug. 1, 2008 | MKTX | A | 4,225 | · | · | 16,725 Direct | +33.80% | Acquired | (price as of 2026-10-02) |
| Aug. 1, 2008 | MKTX | A | 4,225 | · | · | 4,225 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 3, 2007 | MKTX | M | 2,500 | · | · | 2,500 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 3, 2007 | MKTX | A | 2,500 | · | · | 12,500 Direct | +25.00% | Acquired | (price as of 2026-10-02) |
| Aug. 4, 2006 | MKTX | M | 5,000 | · | · | 5,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 4, 2006 | MKTX | A | 5,000 | · | · | 10,000 Direct | +100.00% | Acquired | (price as of 2026-10-02) |
| Aug. 4, 2006 | MKTX | M | 5,000 | · | · | 5,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 4, 2006 | MKTX | A | 5,000 | · | · | 10,000 Direct | +100.00% | Acquired | (price as of 2026-10-02) |
| Aug. 15, 2005 | MKTX | M | 5,000 | $10.04 | $50,200 | 5,000 Direct | · | Acquired | 1534.9% (price as of 2026-10-02) |
| Aug. 15, 2005 | MKTX | A | 5,000 | · | · | 5,000 Direct | · | Acquired | (price as of 2026-10-02) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Feb. 5, 2019 | MKTX | Stock Option (right to buy) | Common Stock | $10.77 | July 30, 2019 | 3,187 | Disposed |
| Nov. 14, 2017 | MKTX | Stock Option (right to buy) | Common Stock | $9.72 | Aug. 1, 2018 | 4,225 | Disposed |
| Feb. 7, 2017 | MKTX | Employee Stock Option (right to buy) | Common Stock | $16.99 | Aug. 3, 2017 | 2,500 | Disposed |
| March 1, 2016 | MKTX | Employee Stock Option (right to buy) | Common Stock | $9.30 | Aug. 4, 2016 | 5,000 | Disposed |
| March 9, 2015 | MKTX | Employee Stock Option (right to buy) | Common Stock | $10.04 | Aug. 15, 2015 | 5,000 | Disposed |
| April 29, 2014 | MKTX | Employee Stock Option (right to buy) | Common Stock | $11.00 | Nov. 4, 2014 | 8,800 | Disposed |
| April 28, 2014 | MKTX | Employee Stock Option (right to buy) | Common Stock | $11.00 | Nov. 4, 2014 | 1,200 | Disposed |
| July 30, 2009 | MKTX | Employee Stock Option (right to buy) | Common Stock | $10.77 | July 30, 2019 | 3,187 | Acquired |
| Aug. 1, 2008 | MKTX | Non-Qualified Stock Option (right to buy) | Common Stock | $9.72 | Aug. 1, 2018 | 4,225 | Acquired |
| Aug. 3, 2007 | MKTX | Employee Stock Option (right to buy) | Common Stock | $16.99 | Aug. 3, 2017 | 2,500 | Acquired |
| Aug. 4, 2006 | MKTX | Employee Stock Option (right to buy) | Common Stock | $9.30 | Aug. 4, 2016 | 5,000 | Acquired |
| Aug. 4, 2006 | MKTX | Employee Stock Options (right to buy) | Common Stock | $9.30 | Aug. 4, 2016 | 5,000 | Acquired |
| Aug. 15, 2005 | MKTX | Employee Stock Option (right to buy) | Common Stock | $10.04 | Aug. 15, 2015 | 5,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Nov. 19, 2004 | MKTX | Stock Option (right to buy) | 10,000 | Direct |