Michael E Marks
Insider
First SEC filing: May 15, 2006 · Latest: May 15, 2006
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 |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 6, 2018 | SLB | P | 8,000 | $60.31 | $482,480 | 68,021 Indirect | +13.33% | Acquired | -19.2% (price as of 2026-10-02) |
| May 1, 2018 | SLB | A | 2,771 | · | · | 60,021 Indirect | +4.84% | Acquired | (price as of 2026-10-02) |
| Oct. 26, 2017 | SLB | P | 16,000 | $63.56 | $1,016,960 | 84,205 Indirect | +23.46% | Acquired | -23.3% (price as of 2026-10-02) |
| Aug. 11, 2017 | SLB | P | 8,000 | $64.20 | $513,600 | 18,000 Indirect | +80.00% | Acquired | -24.1% (price as of 2026-10-02) |
| May 1, 2017 | SLB | A | 2,250 | · | · | 39,250 Indirect | +6.08% | Acquired | (price as of 2026-10-02) |
| Feb. 17, 2017 | GPRO | S | 30,000 | $9.22 | $276,600 | 35,401 Direct | -45.87% | Disposed | -85.4% (price as of 2026-10-02) |
| Aug. 31, 2016 | GPRO | S | 17 | $14.94 | $254 | 0 Indirect | -100.00% | Disposed | -91.0% (price as of 2026-10-02) |
| Aug. 31, 2016 | GPRO | S | 247 | $14.94 | $3,690 | 0 Indirect | -100.00% | Disposed | -91.0% (price as of 2026-10-02) |
| Aug. 29, 2016 | SLB | S | 13,600 | $81.19 | $1,104,184 | 37,000 Indirect | -26.88% | Disposed | -40.0% (price as of 2026-10-02) |
| Aug. 19, 2016 | GPRO | G | 50,000 | · | · | 70,839 Direct | -41.38% | Disposed | (price as of 2026-10-02) |
| Aug. 15, 2016 | GPRO | S | 40,000 | $15.58 | $623,200 | 120,839 Direct | -24.87% | Disposed | -91.3% (price as of 2026-10-02) |
| June 6, 2016 | GPRO | A | 24,861 | · | · | 24,861 Direct | · | Acquired | (price as of 2026-10-02) |
| June 6, 2016 | GPRO | A | 10,496 | · | · | 160,839 Direct | +6.98% | Acquired | (price as of 2026-10-02) |
| May 2, 2016 | SLB | A | 2,250 | · | · | 50,600 Indirect | +4.65% | Acquired | (price as of 2026-10-02) |
| Dec. 22, 2015 | GPRO | J | 565 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| Dec. 22, 2015 | GPRO | J | 565 | · | · | 150,343 Direct | +0.38% | Acquired | (price as of 2026-10-02) |
| Dec. 22, 2015 | GPRO | J | 20,492 | · | · | 39,393 Indirect | -34.22% | Disposed | (price as of 2026-10-02) |
| Dec. 22, 2015 | GPRO | J | 140 | · | · | 247 Indirect | +130.84% | Acquired | (price as of 2026-10-02) |
| Dec. 22, 2015 | GPRO | J | 20,352 | · | · | 149,778 Direct | +15.72% | Acquired | (price as of 2026-10-02) |
| Dec. 22, 2015 | GPRO | J | 565 | · | · | 565 Indirect | · | Acquired | (price as of 2026-10-02) |
| Dec. 22, 2015 | GPRO | J | 25,397 | · | · | 59,885 Indirect | +73.64% | Acquired | (price as of 2026-10-02) |
| Nov. 30, 2015 | GPRO | J | 4,677 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| Nov. 30, 2015 | GPRO | J | 11 | · | · | 17 Indirect | +183.33% | Acquired | (price as of 2026-10-02) |
| Nov. 30, 2015 | GPRO | J | 4,666 | · | · | 129,426 Direct | +3.74% | Acquired | (price as of 2026-10-02) |
| Nov. 30, 2015 | GPRO | J | 123,527 | · | · | 34,488 Indirect | -78.17% | Disposed | (price as of 2026-10-02) |
| Nov. 30, 2015 | GPRO | J | 67 | · | · | 107 Indirect | +167.50% | Acquired | (price as of 2026-10-02) |
| Nov. 30, 2015 | GPRO | J | 36,514 | · | · | 49,607 Indirect | +278.88% | Acquired | (price as of 2026-10-02) |
| Nov. 30, 2015 | GPRO | J | 86,946 | · | · | 124,760 Direct | +229.93% | Acquired | (price as of 2026-10-02) |
| Nov. 30, 2015 | GPRO | J | 4,677 | · | · | 4,677 Indirect | · | Acquired | (price as of 2026-10-02) |
| Nov. 30, 2015 | GPRO | J | 144,281 | · | · | 158,015 Indirect | +1050.54% | Acquired | (price as of 2026-10-02) |
| Aug. 27, 2015 | SLB | P | 13,600 | $73.18 | $995,248 | 48,350 Indirect | +39.14% | Acquired | -33.4% (price as of 2026-10-02) |
| Aug. 10, 2015 | GPRO | G | 8,728 | · | · | 13,093 Indirect | -40.00% | Disposed | (price as of 2026-10-02) |
| Aug. 10, 2015 | GPRO | G | 24,652 | · | · | 37,814 Direct | -39.46% | Disposed | (price as of 2026-10-02) |
| June 8, 2015 | GPRO | A | 6,049 | · | · | 6,049 Direct | · | Acquired | (price as of 2026-10-02) |
| June 8, 2015 | GPRO | A | 757 | · | · | 62,466 Direct | +1.23% | Acquired | (price as of 2026-10-02) |
| June 5, 2015 | GPRO | J | 181 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| June 5, 2015 | GPRO | J | 181 | · | · | 61,709 Direct | +0.29% | Acquired | (price as of 2026-10-02) |
| June 5, 2015 | GPRO | J | 650 | · | · | 13,734 Indirect | -4.52% | Disposed | (price as of 2026-10-02) |
| June 5, 2015 | GPRO | J | 650 | · | · | 61,528 Direct | +1.07% | Acquired | (price as of 2026-10-02) |
| June 5, 2015 | GPRO | J | 181 | · | · | 181 Indirect | · | Acquired | (price as of 2026-10-02) |
| June 5, 2015 | GPRO | J | 805 | · | · | 14,384 Indirect | +5.93% | Acquired | (price as of 2026-10-02) |
| May 13, 2015 | GPRO | J | 3,118 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| May 13, 2015 | GPRO | J | 6 | · | · | 6 Indirect | · | Acquired | (price as of 2026-10-02) |
| May 13, 2015 | GPRO | J | 3,112 | · | · | 60,878 Direct | +5.39% | Acquired | (price as of 2026-10-02) |
| May 13, 2015 | GPRO | J | 78,738 | · | · | 13,579 Indirect | -85.29% | Disposed | (price as of 2026-10-02) |
| May 13, 2015 | GPRO | J | 40 | · | · | 40 Indirect | · | Acquired | (price as of 2026-10-02) |
| May 13, 2015 | GPRO | J | 21,821 | · | · | 21,821 Indirect | · | Acquired | (price as of 2026-10-02) |
| May 13, 2015 | GPRO | J | 56,877 | · | · | 57,766 Direct | +6397.86% | Acquired | (price as of 2026-10-02) |
| May 13, 2015 | GPRO | J | 3,118 | · | · | 3,118 Indirect | · | Acquired | (price as of 2026-10-02) |
| May 13, 2015 | GPRO | J | 92,317 | · | · | 92,317 Indirect | · | Acquired | (price as of 2026-10-02) |
| April 30, 2015 | SLB | A | 2,250 | · | · | 34,750 Indirect | +6.92% | Acquired | (price as of 2026-10-02) |
| Oct. 27, 2014 | SLB | P | 3,250 | $92.59 | $300,918 | 32,500 Indirect | +11.11% | Acquired | -47.4% (price as of 2026-10-02) |
| July 30, 2014 | GPRO | A | 6,464 | · | · | 6,464 Direct | · | Acquired | (price as of 2026-10-02) |
| July 30, 2014 | GPRO | A | 889 | · | · | 889 Direct | · | Acquired | (price as of 2026-10-02) |
| April 30, 2014 | SLB | A | 2,250 | · | · | 29,250 Indirect | +8.33% | Acquired | (price as of 2026-10-02) |
| April 30, 2013 | SLB | A | 2,250 | · | · | 27,000 Indirect | +9.09% | Acquired | (price as of 2026-10-02) |
| April 30, 2012 | SLB | A | 2,250 | · | · | 24,750 Indirect | +10.00% | Acquired | (price as of 2026-10-02) |
| Aug. 11, 2011 | SLB | P | 2,700 | $74.60 | $201,420 | 22,500 Indirect | +13.64% | Acquired | -34.7% (price as of 2026-10-02) |
| May 2, 2011 | SLB | A | 2,250 | · | · | 19,800 Indirect | +12.82% | Acquired | (price as of 2026-10-02) |
| Dec. 7, 2010 | CALX | S | 30,000 | $15.20 | $456,000 | 22,080 Indirect | -57.60% | Disposed | 129.0% (price as of 2026-10-02) |
| Dec. 6, 2010 | CALX | S | 34,653 | $15.60 | $540,587 | 52,080 Indirect | -39.95% | Disposed | 123.1% (price as of 2026-10-02) |
| Dec. 3, 2010 | CALX | S | 13,267 | $15.25 | $202,322 | 86,733 Indirect | -13.27% | Disposed | 128.3% (price as of 2026-10-02) |
| Dec. 1, 2010 | CALX | S | 15,000 | $13.40 | $201,000 | 14,786 Indirect | -50.36% | Disposed | 159.8% (price as of 2026-10-02) |
| Dec. 1, 2010 | CALX | S | 337,719 | $13.24 | $4,471,400 | 100,000 Indirect | -77.15% | Disposed | 162.9% (price as of 2026-10-02) |
| Nov. 24, 2010 | CALX | S | 9,440 | $13.00 | $122,720 | 437,719 Indirect | -2.11% | Disposed | 167.8% (price as of 2026-10-02) |
| Nov. 12, 2010 | SLB | S | 2,250 | $73.86 | $166,185 | 10,000 Indirect | -18.37% | Disposed | -34.0% (price as of 2026-10-02) |
| Nov. 12, 2010 | SLB | S | 860 | $73.89 | $63,545 | 0 Indirect | -100.00% | Disposed | -34.0% (price as of 2026-10-02) |
| Nov. 12, 2010 | SLB | S | 500 | $73.89 | $36,945 | 0 Indirect | -100.00% | Disposed | -34.0% (price as of 2026-10-02) |
| Nov. 11, 2010 | CALX | S | 20,157 | $13.04 | $262,847 | 447,159 Indirect | -4.31% | Disposed | 166.9% (price as of 2026-10-02) |
| Nov. 1, 2010 | CALX | S | 100,000 | $12.40 | $1,240,000 | 467,316 Indirect | -17.63% | Disposed | 180.7% (price as of 2026-10-02) |
| Oct. 19, 2010 | CALX | A | 5,000 | · | · | 19,000 Direct | +35.71% | Acquired | (price as of 2026-10-02) |
| Oct. 19, 2010 | CALX | A | 2,266 | · | · | 2,266 Direct | · | Acquired | (price as of 2026-10-02) |
| April 30, 2010 | SLB | A | 2,250 | · | · | 28,500 Direct | +8.57% | Acquired | (price as of 2026-10-02) |
| March 26, 2010 | CALX | C | 63,119 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| March 26, 2010 | CALX | C | 179,963 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| March 26, 2010 | CALX | C | 537,584 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| March 26, 2010 | CALX | S | 33,333 | $13.00 | $433,329 | 29,786 Indirect | -52.81% | Disposed | 167.8% (price as of 2026-10-02) |
| March 26, 2010 | CALX | C | 63,119 | · | · | 63,119 Indirect | · | Acquired | (price as of 2026-10-02) |
| March 26, 2010 | CALX | S | 295,370 | $13.00 | $3,839,810 | 567,316 Indirect | -34.24% | Disposed | 167.8% (price as of 2026-10-02) |
| March 26, 2010 | CALX | C | 179,963 | · | · | 862,686 Indirect | +26.36% | Acquired | (price as of 2026-10-02) |
| March 26, 2010 | CALX | C | 682,723 | · | · | 682,723 Indirect | · | Acquired | (price as of 2026-10-02) |
| Feb. 26, 2010 | SLB | P | 3,300 | $60.75 | $200,475 | 29,550 Direct | +12.57% | Acquired | -19.8% (price as of 2026-10-02) |
| Oct. 13, 2009 | CALX | A | 14,000 | · | · | 14,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 30, 2009 | SLB | A | 2,250 | · | · | 26,250 Direct | +9.38% | Acquired | (price as of 2026-10-02) |
| Aug. 15, 2008 | CROX | S | 714,808 | $4.53 | $3,238,080 | 500,000 Indirect | -58.84% | Disposed | 2506.8% (price as of 2026-10-02) |
| July 30, 2008 | CROX | S | 50,000 | $4.45 | $222,500 | 11,494 Direct | -81.31% | Disposed | 2553.7% (price as of 2026-10-02) |
| July 30, 2008 | CROX | S | 100,000 | $4.45 | $445,000 | 61,494 Direct | -61.92% | Disposed | 2553.7% (price as of 2026-10-02) |
| July 30, 2008 | CROX | S | 100,000 | $4.44 | $444,000 | 161,494 Direct | -38.24% | Disposed | 2559.7% (price as of 2026-10-02) |
| June 26, 2008 | CROX | A | 11,494 | · | · | 261,494 Direct | +4.60% | Acquired | (price as of 2026-10-02) |
| June 26, 2008 | CROX | A | 11,494 | · | · | 261,494 Direct | +4.60% | Acquired | (price as of 2026-10-02) |
| April 30, 2008 | SLB | A | 2,000 | · | · | 24,000 Direct | +9.09% | Acquired | (price as of 2026-10-02) |
| March 6, 2008 | CROX | P | 23,300 | $20.00 | $466,000 | 250,000 Direct | +10.28% | Acquired | 490.5% (price as of 2026-10-02) |
| March 6, 2008 | CROX | P | 33,300 | $19.99 | $665,667 | 226,700 Direct | +17.22% | Acquired | 490.7% (price as of 2026-10-02) |
| March 6, 2008 | CROX | P | 17,500 | $19.98 | $349,650 | 193,400 Direct | +9.95% | Acquired | 491.0% (price as of 2026-10-02) |
| March 6, 2008 | CROX | P | 28,400 | $19.97 | $567,148 | 175,900 Direct | +19.25% | Acquired | 491.3% (price as of 2026-10-02) |
| March 6, 2008 | CROX | P | 16,000 | $19.96 | $319,360 | 147,500 Direct | +12.17% | Acquired | 491.6% (price as of 2026-10-02) |
| March 6, 2008 | CROX | P | 37,635 | $19.95 | $750,818 | 131,500 Direct | +40.09% | Acquired | 491.9% (price as of 2026-10-02) |
| March 6, 2008 | CROX | P | 31,000 | $19.94 | $618,140 | 93,865 Direct | +49.31% | Acquired | 492.2% (price as of 2026-10-02) |
| March 6, 2008 | CROX | P | 10,865 | $19.93 | $216,539 | 62,865 Direct | +20.89% | Acquired | 492.5% (price as of 2026-10-02) |
| March 6, 2008 | CROX | P | 9,600 | $19.92 | $191,232 | 52,000 Direct | +22.64% | Acquired | 492.8% (price as of 2026-10-02) |
Showing latest 100 of 607 transactions
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 |
|---|---|---|---|---|---|---|---|
| June 6, 2016 | GPRO | Non-Qualified Stock Option (right to buy) | Class A Common Stock | $10.92 | June 5, 2026 | 24,861 | Acquired |
| June 8, 2015 | GPRO | Non-Qualified Stock Option (right to buy) | Class A Common Stock | $59.40 | June 7, 2025 | 6,049 | Acquired |
| July 30, 2014 | GPRO | Non-Qualified Stock Option (right to buy) | Class A Common Stock | $46.32 | July 30, 2024 | 6,464 | Acquired |
| Oct. 19, 2010 | CALX | Stock Option (right to buy) | Common Stock | $12.77 | Oct. 19, 2020 | 5,000 | Acquired |
| March 26, 2010 | CALX | Series J Preferred Stock | Common Stock | · | · | 63,119 | Disposed |
| March 26, 2010 | CALX | Series J Preferred Stock | Common Stock | · | · | 179,963 | Disposed |
| March 26, 2010 | CALX | Series I Preferred Stock | Common Stock | · | · | 537,584 | Disposed |
| Oct. 13, 2009 | CALX | Stock Option (right to buy) | Common Stock | · | Oct. 12, 2019 | 14,000 | Acquired |
| Sept. 27, 2007 | FLEX | Stock Option (Right to Buy) | Ordinary Shares | $11.40 | Sept. 27, 2012 | 12,500 | Acquired |
| Aug. 27, 2007 | CROX | Employee Stock Option (Right to Buy) | Common Stock | · | Sept. 1, 2011 | 34,220 | Disposed |
| July 9, 2007 | CROX | Stock Option (right to buy) | Common Stock | $47.88 | July 8, 2014 | 20,000 | Acquired |
| Oct. 30, 2006 | CROX | Stock Option (right to buy) | Common Stock | $39.22 | Oct. 30, 2013 | 10,000 | Acquired |
| Oct. 4, 2006 | FLEX | Stock Option (Right to Buy) | Ordinary Shares | $12.96 | Oct. 4, 2011 | 12,500 | Acquired |
| May 9, 2006 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $44.76 | Jan. 25, 2015 | 2,500 | Disposed |
| May 9, 2006 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $40.68 | Oct. 18, 2014 | 2,500 | Disposed |
| May 9, 2006 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $40.24 | May 11, 2015 | 2,500 | Disposed |
| May 2, 2006 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $47.86 | May 2, 2013 | 1,250 | Acquired |
| Feb. 13, 2006 | CROX | Series A Preferred Stock | Common Stock | · | · | 2,431,985 | Disposed |
| Jan. 31, 2006 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $51.98 | Jan. 31, 2013 | 1,250 | Acquired |
| Nov. 30, 2005 | FLEX | Employee Stock Option (right to buy) | Ordinary Shares | $23.19 | Dec. 20, 2010 | 1,000,000 | Disposed |
| Nov. 4, 2005 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $49.99 | Nov. 4, 2012 | 1,250 | Acquired |
| Aug. 2, 2005 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $51.35 | Aug. 2, 2012 | 2,500 | Acquired |
| Aug. 2, 2005 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $51.35 | Aug. 2, 2015 | 2,500 | Acquired |
| June 21, 2005 | FLEX | Stock Option (Right to Buy) | Ordinary Shares | $7.90 | July 1, 2012 | 1,000,000 | Disposed |
| May 11, 2005 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $40.24 | May 11, 2015 | 2,500 | Acquired |
| Jan. 25, 2005 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $44.76 | Jan. 25, 2015 | 2,500 | Acquired |
| Oct. 18, 2004 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $40.68 | Oct. 18, 2014 | 2,500 | Acquired |
| Aug. 23, 2004 | FLEX | Stock Option (Right to Buy) | Ordinary Shares | $11.53 | Aug. 23, 2014 | 10,000 | Acquired |
| Aug. 23, 2004 | FLEX | Stock Option (Right to Buy) | Ordinary Shares | $11.53 | Aug. 23, 2014 | 1,000,000 | Acquired |
| Aug. 23, 2004 | FLEX | Stock Option (Right to Buy) | Ordinary Shares | $11.53 | Aug. 23, 2014 | 95,000 | Acquired |
| Aug. 23, 2004 | FLEX | Stock Option (Right to Buy) | Ordinary Shares | $11.53 | Aug. 23, 2004 | 270,000 | Acquired |
| April 21, 2004 | FLEX | Stock Option (Right to buy) | Ordinary Shares | $17.69 | April 21, 2014 | 1,000,000 | Acquired |
| Nov. 5, 2003 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $59.44 | Nov. 5, 2013 | 5,000 | Acquired |
| Nov. 5, 2003 | KLAC | Non-Qualified Stock Option (right to buy) | Common Stock | $59.44 | Nov. 5, 2013 | 5,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 8 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 23, 2010 | CALX | Series I Preferred Stock | · | Indirect |
| March 23, 2010 | CALX | Series J Preferred Stock | · | Indirect |
| March 23, 2010 | CALX | Series J Preferred Stock | · | Indirect |
| March 23, 2010 | CALX | Stock Option (right to buy) | · | Direct |
| Feb. 7, 2006 | CROX | Common Stock | 152,452 | Direct |
| Feb. 7, 2006 | CROX | Series A Preferred Stock | 2,431,985 | Indirect |
| Feb. 7, 2006 | CROX | Employee Stock Option (right to buy) | 116,810 | Direct |
| Feb. 7, 2006 | CROX | Employee Stock Option (right to buy) | 29,203 | Direct |