Charles E Koob
Insider
First SEC filing: Feb. 27, 2012 · Latest: Feb. 8, 2019
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 |
|---|---|---|---|---|---|---|---|---|---|
| Oct. 2, 2020 | MDXG | A | 26,236 | $6.67 | $174,994 | 1,431,525 Indirect | +1.87% | Acquired | -31.2% (price as of 2026-10-02) |
| Sept. 21, 2020 | MDXG | G | 50,000 | · | · | 1,455,289 Indirect | -3.32% | Disposed | (price as of 2026-10-02) |
| Sept. 21, 2020 | MDXG | G | 50,000 | · | · | 1,405,289 Indirect | -3.44% | Disposed | (price as of 2026-10-02) |
| Aug. 5, 2020 | MDXG | A | 29,661 | · | · | 1,505,289 Indirect | +2.01% | Acquired | (price as of 2026-10-02) |
| Jan. 22, 2020 | MDXG | M | 15,000 | $1.20 | $18,000 | 15,000 Direct | · | Acquired | 282.5% (price as of 2026-10-02) |
| Jan. 22, 2020 | MDXG | J | 15,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 22, 2020 | MDXG | J | 15,000 | · | · | 1,475,628 Indirect | +1.03% | Acquired | (price as of 2026-10-02) |
| Jan. 22, 2020 | MDXG | M | 15,000 | $1.20 | $18,000 | 0 Direct | -100.00% | Disposed | 282.5% (price as of 2026-10-02) |
| July 9, 2019 | MDXG | J | 723,154 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| July 9, 2019 | MDXG | J | 723,154 | · | · | 1,460,628 Indirect | +98.06% | Acquired | (price as of 2026-10-02) |
| Oct. 4, 2017 | CLPT | A | 2,729 | $2.47 | $6,741 | 22,902 Direct | +13.53% | Acquired | 341.1% (price as of 2026-10-02) |
| May 17, 2017 | MDXG | A | 12,153 | · | · | 1,324,459 Direct | +0.93% | Acquired | (price as of 2026-10-02) |
| May 1, 2017 | MDXG | J | 140,168 | $13.14 | $1,841,808 | 140,168 Indirect | · | Acquired | -65.1% (price as of 2026-10-02) |
| March 13, 2017 | MDXG | S | 50,486 | $8.50 | $429,131 | 1,312,306 Direct | -3.70% | Disposed | -46.0% (price as of 2026-10-02) |
| Dec. 30, 2016 | CLPT | A | 2,749 | $2.64 | $7,257 | 20,173 Direct | +15.78% | Acquired | 312.7% (price as of 2026-10-02) |
| Sept. 30, 2016 | CLPT | A | 1,014 | $6.65 | $6,743 | 17,424 Direct | +6.18% | Acquired | 63.8% (price as of 2026-10-02) |
| June 30, 2016 | CLPT | A | 32,491 | $0.21 | $6,823 | 656,429 Direct | +5.21% | Acquired | 29.7% (price as of 2026-10-02) |
| June 8, 2016 | CLPT | A | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 18, 2016 | MDXG | A | 21,429 | · | · | 1,502,960 Direct | +1.45% | Acquired | (price as of 2026-10-02) |
| March 31, 2016 | CLPT | A | 21,945 | $0.31 | $6,803 | 623,938 Direct | +3.65% | Acquired | -12.1% (price as of 2026-10-02) |
| Dec. 31, 2015 | CLPT | A | 19,097 | $0.38 | $7,257 | 601,993 Direct | +3.28% | Acquired | -28.3% (price as of 2026-10-02) |
| Dec. 18, 2015 | CLPT | P | 154,035 | · | · | 736,931 Indirect | +26.43% | Acquired | (price as of 2026-10-02) |
| Dec. 18, 2015 | CLPT | P | 61,614 | · | · | 61,614 Indirect | · | Acquired | (price as of 2026-10-02) |
| Dec. 18, 2015 | CLPT | P | 46,211 | · | · | 46,211 Indirect | · | Acquired | (price as of 2026-10-02) |
| Oct. 1, 2015 | CLPT | A | 11,252 | $0.60 | $6,751 | 582,896 Direct | +1.97% | Acquired | -54.6% (price as of 2026-10-02) |
| June 30, 2015 | CLPT | A | 6,266 | $1.08 | $6,767 | 571,644 Direct | +1.11% | Acquired | -74.8% (price as of 2026-10-02) |
| June 5, 2015 | CLPT | A | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 14, 2015 | MDXG | A | 12,878 | · | · | 1,481,531 Direct | +0.88% | Acquired | (price as of 2026-10-02) |
| March 31, 2015 | CLPT | A | 7,250 | $1.00 | $7,250 | 565,378 Direct | +1.30% | Acquired | -72.8% (price as of 2026-10-02) |
| Dec. 31, 2014 | CLPT | A | 8,410 | $0.86 | $7,233 | 558,128 Direct | +1.53% | Acquired | -68.3% (price as of 2026-10-02) |
| Sept. 30, 2014 | CLPT | A | 5,894 | $1.23 | $7,250 | 549,718 Direct | +1.08% | Acquired | -77.9% (price as of 2026-10-02) |
| July 28, 2014 | MDXG | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 28, 2014 | MDXG | A | 9,000 | · | · | 1,468,653 Direct | +0.62% | Acquired | (price as of 2026-10-02) |
| June 30, 2014 | CLPT | A | 7,107 | $1.02 | $7,249 | 543,824 Direct | +1.32% | Acquired | -73.3% (price as of 2026-10-02) |
| June 4, 2014 | CLPT | A | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 31, 2014 | CLPT | A | 6,142 | $1.24 | $7,616 | 536,717 Direct | +1.16% | Acquired | -78.0% (price as of 2026-10-02) |
| Dec. 31, 2013 | CLPT | A | 5,263 | $1.33 | $7,000 | 530,575 Direct | +1.00% | Acquired | -79.5% (price as of 2026-10-02) |
| Sept. 30, 2013 | CLPT | A | 4,609 | $1.41 | $6,499 | 525,312 Direct | +0.89% | Acquired | -80.7% (price as of 2026-10-02) |
| June 28, 2013 | CLPT | A | 11,818 | $1.10 | $13,000 | 520,703 Direct | +2.32% | Acquired | -75.2% (price as of 2026-10-02) |
| June 5, 2013 | MDXG | M | 50,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| June 5, 2013 | MDXG | M | 50,000 | $1.00 | $50,000 | 1,459,653 Direct | +3.55% | Acquired | 359.0% (price as of 2026-10-02) |
| May 9, 2013 | MDXG | A | 15,000 | $6.60 | $99,000 | 60,000 Direct | +33.33% | Acquired | -30.5% (price as of 2026-10-02) |
| May 9, 2013 | MDXG | A | 5,000 | $6.60 | $33,000 | 1,409,653 Direct | +0.36% | Acquired | -30.5% (price as of 2026-10-02) |
| Oct. 31, 2012 | MDXG | A | 15,000 | $2.94 | $44,100 | 45,000 Direct | +50.00% | Acquired | 56.1% (price as of 2026-10-02) |
| Oct. 31, 2012 | MDXG | A | 15,000 | $2.94 | $44,100 | 65,000 Direct | +30.00% | Acquired | 56.1% (price as of 2026-10-02) |
| Oct. 17, 2012 | CLPT | A | 8,594 | $2.40 | $20,626 | 508,885 Direct | +1.72% | Acquired | -88.7% (price as of 2026-10-02) |
| Sept. 4, 2012 | CLPT | G | 50,000 | · | · | 500,291 Direct | -9.09% | Disposed | (price as of 2026-10-02) |
| Aug. 17, 2012 | CLPT | X | 50,000 | $0.01 | $500 | 550,291 Direct | +9.99% | Acquired | 2623.8% (price as of 2026-10-02) |
| Aug. 17, 2012 | CLPT | X | 50,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| July 27, 2012 | MDXG | X | 25,243 | $1.50 | $37,864 | 50,000 Direct | -33.55% | Disposed | 206.0% (price as of 2026-10-02) |
| July 27, 2012 | MDXG | X | 25,243 | $1.50 | $37,864 | 1,404,653 Direct | +1.83% | Acquired | 206.0% (price as of 2026-10-02) |
| April 13, 2012 | CLPT | A | 45,000 | · | · | 45,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 27, 2012 | MDXG | X | 12,622 | $0.01 | $126 | 75,243 Direct | -14.37% | Disposed | 45800.0% (price as of 2026-10-02) |
| March 27, 2012 | MDXG | X | 12,622 | $0.01 | $126 | 1,379,410 Direct | +0.92% | Acquired | 45800.0% (price as of 2026-10-02) |
| March 9, 2012 | MDXG | A | 12,622 | $0.01 | $126 | 87,865 Direct | +16.77% | Acquired | 45800.0% (price as of 2026-10-02) |
| Feb. 14, 2012 | MDXG | X | 100,000 | $1.00 | $100,000 | 30,000 Direct | · | Acquired | 359.0% (price as of 2026-10-02) |
| Feb. 14, 2012 | MDXG | X | 100,000 | $1.00 | $100,000 | 1,366,788 Direct | +7.89% | Acquired | 359.0% (price as of 2026-10-02) |
| Jan. 31, 2012 | MDXG | A | 38,813 | $1.10 | $42,694 | 1,266,788 Direct | +3.16% | Acquired | 317.3% (price as of 2026-10-02) |
| Dec. 14, 2011 | MDXG | A | 15,000 | $1.10 | $16,500 | 130,000 Direct | +13.04% | Acquired | 317.3% (price as of 2026-10-02) |
| Dec. 31, 2010 | MDXG | P | 25,243 | $1.50 | $37,864 | 190,243 Direct | +15.30% | Acquired | 206.0% (price as of 2026-10-02) |
| Dec. 31, 2010 | MDXG | P | 50,486 | $0.99 | $49,981 | 1,227,975 Direct | +4.29% | Acquired | 363.6% (price as of 2026-10-02) |
| Oct. 20, 2010 | MDXG | P | 50,000 | $1.00 | $50,000 | 165,000 Direct | +43.48% | Acquired | 359.0% (price as of 2026-10-02) |
| May 11, 2010 | MDXG | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 31, 2010 | MDXG | C | 300,000 | $150000.00 | $45,000,000,000 | 0 Direct | -100.00% | Disposed | -100.0% (price as of 2026-10-02) |
| March 31, 2010 | MDXG | A | 308,821 | $0.50 | $154,410 | 308,821 Direct | · | Acquired | 818.0% (price as of 2026-10-02) |
| Nov. 19, 2009 | MDXG | P | 15,000 | $0.50 | $7,500 | 868,668 Direct | +1.76% | Acquired | 818.0% (price as of 2026-10-02) |
| Oct. 19, 2009 | MDXG | P | 16,668 | $0.45 | $7,501 | 853,668 Direct | +1.99% | Acquired | 920.0% (price as of 2026-10-02) |
| Aug. 20, 2009 | MDXG | A | 37,000 | · | · | 837,000 Direct | +4.62% | Acquired | (price as of 2026-10-02) |
| June 4, 2009 | MDXG | A | 100,000 | $0.50 | $50,000 | 200,000 Direct | +100.00% | Acquired | 818.0% (price as of 2026-10-02) |
| April 7, 2009 | MDXG | A | None | $150000.00 | · | · Direct | · | Acquired | -100.0% (price as of 2026-10-02) |
| Feb. 20, 2009 | MDXG | A | 100,000 | $1.00 | $100,000 | 100,000 Direct | · | Acquired | 359.0% (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 |
|---|---|---|---|---|---|---|---|
| Jan. 22, 2020 | MDXG | Stock Option | Common Stock | $1.20 | May 10, 2020 | 15,000 | Disposed |
| June 8, 2016 | CLPT | Stock Options (right to buy) | Common Stock | $0.25 | June 8, 2026 | 20,000 | Acquired |
| Dec. 18, 2015 | CLPT | Series A Warrants (right to buy) | Common Stock | $0.41 | Dec. 18, 2020 | 61,614 | Acquired |
| Dec. 18, 2015 | CLPT | Series B Warrants (right to buy) | Common Stock | $0.53 | Dec. 18, 2020 | 46,211 | Acquired |
| June 5, 2015 | CLPT | Stock Options (right to buy) | Common Stock | $1.04 | June 5, 2025 | 20,000 | Acquired |
| July 28, 2014 | MDXG | Stock Option | Common Stock | $6.28 | July 27, 2024 | 15,000 | Acquired |
| June 4, 2014 | CLPT | Stock Options (right to buy) | Common Stock | $0.80 | June 4, 2024 | 20,000 | Acquired |
| June 5, 2013 | MDXG | Warrant | Common Stock | $1.00 | Oct. 21, 2013 | 50,000 | Disposed |
| May 9, 2013 | MDXG | Stock Option | Common Stock | $6.60 | May 8, 2023 | 15,000 | Acquired |
| Oct. 31, 2012 | MDXG | Stock Option | Common Stock | $2.94 | Oct. 30, 2022 | 15,000 | Acquired |
| Oct. 31, 2012 | MDXG | Stock Option | Common Stock | $2.94 | Oct. 30, 2022 | 15,000 | Acquired |
| Aug. 17, 2012 | CLPT | Warrants (right to buy) | Common Stock | $0.01 | Sept. 14, 2013 | 50,000 | Disposed |
| July 27, 2012 | MDXG | Warrant | Common Stock | $1.50 | Aug. 3, 2012 | 25,243 | Disposed |
| April 13, 2012 | CLPT | Stock Option (right to buy) | Common Stock | $1.00 | April 13, 2022 | 45,000 | Acquired |
| March 27, 2012 | MDXG | Warrant | Common Stock | $0.01 | Dec. 31, 2015 | 12,622 | Disposed |
| March 9, 2012 | MDXG | Warrant | Common Stock | $0.01 | Dec. 31, 2015 | 12,622 | Acquired |
| Feb. 14, 2012 | MDXG | Stock Option | Common Stock | $1.00 | Feb. 14, 2012 | 100,000 | Acquired |
| Dec. 14, 2011 | MDXG | Stock Option | Common Stock | $1.10 | Dec. 14, 2021 | 15,000 | Acquired |
| Dec. 31, 2010 | MDXG | Warrant | Common Stock | $1.50 | Dec. 31, 2015 | 25,243 | Acquired |
| Oct. 20, 2010 | MDXG | Warrant | Common Stock | $1.00 | Oct. 20, 2013 | 50,000 | Acquired |
| May 11, 2010 | MDXG | Stock Option | Common Stock | $1.20 | May 11, 2020 | 15,000 | Acquired |
| March 31, 2010 | MDXG | 3% Convertible Senior Secured Promissory Note | Common Stock | $0.50 | April 7, 2012 | 300,000 | Disposed |
| April 7, 2009 | MDXG | 3% Convertible Senior Secured Promissory Notes | Common Stock | $0.50 | April 7, 2012 | · | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 10 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 27, 2012 | CLPT | Common Stock | 20,000 | Indirect |
| Feb. 27, 2012 | CLPT | Common Stock | 480,291 | Direct |
| Feb. 27, 2012 | CLPT | Warrants (right to buy) | 50,000 | Direct |
| Feb. 27, 2012 | CLPT | Stock Option (right to buy) | 3,750 | Direct |
| Feb. 27, 2012 | CLPT | Stock Option (right to buy) | 2,500 | Direct |
| Feb. 27, 2012 | CLPT | Stock Option (right to buy) | 2,500 | Direct |
| Feb. 27, 2012 | CLPT | Stock Option (right to buy) | 38,000 | Direct |
| Feb. 27, 2012 | CLPT | Stock Option (right to buy) | 12,000 | Direct |
| Feb. 15, 2008 | MDXG | Series A Preferred Stock [F1] | 120,000 | Indirect |
| Feb. 15, 2008 | MDXG | Stock option | 309,142 | Direct |