Denis Corin
Insider
First SEC filing: July 3, 2007 · Latest: July 3, 2007
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 |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 17, 2012 | MRKR | J | 166,667 | $0.15 | $25,000 | 2,394,535 Direct | +7.48% | Acquired | -99.9% (price as of 2026-10-05) |
| March 23, 2011 | MRKR | S | 160,000 | $0.12 | $19,200 | 135,300 Indirect | -54.18% | Disposed | -99.9% (price as of 2026-10-05) |
| March 23, 2011 | MRKR | J | 294,118 | $0.17 | $50,000 | 2,227,868 Direct | +15.21% | Acquired | -99.9% (price as of 2026-10-05) |
| Oct. 14, 2009 | MRKR | A | 1,100,000 | $0.97 | $1,067,000 | 1,180,000 Direct | +1375.00% | Acquired | -100.0% (price as of 2026-10-05) |
| June 29, 2009 | MRKR | J | 295,300 | $0.10 | $29,530 | 295,300 Indirect | · | Acquired | -100.0% (price as of 2026-10-05) |
| June 29, 2009 | MRKR | J | 1,925,750 | $0.10 | $192,575 | 1,933,750 Direct | +24071.88% | Acquired | -100.0% (price as of 2026-10-05) |
| March 11, 2009 | MRKR | J | 150,000 | · | · | 150,000 Direct | · | Acquired | (price as of 2026-10-05) |
| March 11, 2009 | MRKR | J | 200,000 | · | · | 350,000 Direct | +133.33% | Acquired | (price as of 2026-10-05) |
| Feb. 4, 2009 | MRKR | A | 14,458 | $2.00 | $28,916 | 54,458 Direct | +36.14% | Acquired | -100.0% (price as of 2026-10-05) |
| June 30, 2008 | MRKR | J | 1,000,000 | · | · | 800,000 Direct | -55.56% | Disposed | (price as of 2026-10-05) |
| June 24, 2008 | MRKR | J | 1,000,000 | · | · | 1,800,000 Direct | +125.00% | Acquired | (price as of 2026-10-05) |
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 |
|---|---|---|---|---|---|---|---|
| Oct. 14, 2009 | MRKR | Stock Options | Common stock | $0.97 | Oct. 14, 2019 | 1,100,000 | Acquired |
| March 11, 2009 | MRKR | Purchase Warrants | Common Stock | $0.01 | Aug. 15, 2009 | 150,000 | Acquired |
| March 11, 2009 | MRKR | Purchase Warrants | Common Stock | $0.01 | Nov. 15, 2010 | 200,000 | Acquired |
| Feb. 4, 2009 | MRKR | Purchase Warrants | Common stock | $2.00 | Feb. 4, 2011 | 14,458 | Acquired |
| June 30, 2008 | MRKR | Option to buy | Common Stock | $0.32 | June 24, 2018 | 1,000,000 | Disposed |
| June 24, 2008 | MRKR | Option to buy | Common Stock | $0.32 | June 24, 2018 | 1,000,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.