Mark Witten serves as Executive at IR BIOSCIENCES HOLDINGS INC, where they oversee executive responsibilities. Since joining the company, Mark Witten has executed 48 insider transactions totaling $134.7K, demonstrating a bearish approach to their equity position. Their most recent transaction on May 17, 2007 involved selling 10,000 shares valued at $1.7K.
Mark Witten currently holds 8,218,778 shares of IR BIOSCIENCES HOLDINGS INC (IRBO), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Mark Witten has been a net seller of IRBO stock. They have purchased $0 and sold $134.7K worth of shares.
Mark Witten's most recent insider trade was on May 17, 2007, when they sold 10,000 shares at $0.17 per share.
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| $0.15 |
| Discretionary |
| Apr 18, 2007 | IRBO | $750 | Sale | 5,000 | $0.15 | Discretionary |
| Apr 17, 2007 | IRBO | $2.4K | Sale | 15,000 | $0.16 | Discretionary |
| Apr 17, 2007 | IRBO | $850 | Sale | 5,000 | $0.17 | Discretionary |
| Mar 20, 2007 | IRBO | $2.6K | Sale | 20,000 | $0.13 | Discretionary |
| Mar 20, 2007 | IRBO | $1.4K | Sale | 10,000 | $0.14 | Discretionary |
| Feb 20, 2007 | IRBO | $1.5K | Sale | 10,000 | $0.15 | Discretionary |
| Feb 20, 2007 | IRBO | $2.8K | Sale | 20,000 | $0.14 | Discretionary |
| Jan 18, 2007 | IRBO | $3.0K | Sale | 20,000 | $0.15 | Discretionary |
| Jan 17, 2007 | IRBO | $1.5K | Sale | 10,000 | $0.15 | Discretionary |
| Dec 20, 2006 | IRBO | $1.5K | Sale | 10,000 | $0.15 | Discretionary |
| Dec 19, 2006 | IRBO | $1.6K | Sale | 10,000 | $0.16 | Discretionary |
| Dec 18, 2006 | IRBO | $1.6K | Sale | 10,000 | $0.16 | Discretionary |
| Dec 13, 2006 | IRBO | $0 | Other | 15,360 | $N/A | Discretionary |
| Nov 21, 2006 | IRBO | $3.8K | Sale | 25,000 | $0.15 | Discretionary |
| Nov 20, 2006 | IRBO | $1.7K | Sale | 10,000 | $0.17 | Discretionary |
| Oct 19, 2006 | IRBO | $1.1K | Sale | 5,000 | $0.22 | Discretionary |
| Oct 18, 2006 | IRBO | $1.1K | Sale | 5,000 | $0.23 | Discretionary |
| Oct 17, 2006 | IRBO | $2.3K | Sale | 10,000 | $0.23 | Discretionary |
| Sep 21, 2006 | IRBO | $2.1K | Sale | 10,000 | $0.21 | Discretionary |
| Sep 20, 2006 | IRBO | $2.0K | Sale | 10,000 | $0.20 | Discretionary |
| Sep 18, 2006 | IRBO | $1.6K | Sale | 10,000 | $0.16 | Discretionary |
| Aug 24, 2006 | IRBO | $1.9K | Sale | 10,000 | $0.19 | Discretionary |
| Aug 18, 2006 | IRBO | $2.0K | Sale | 10,000 | $0.20 | Discretionary |
| Aug 17, 2006 | IRBO | $2.0K | Sale | 10,000 | $0.20 | Discretionary |
| Jul 20, 2006 | IRBO | $2.4K | Sale | 10,000 | $0.24 | Discretionary |
| Jul 18, 2006 | IRBO | $2.1K | Sale | 10,000 | $0.21 | Discretionary |
| Jul 17, 2006 | IRBO | $2.1K | Sale | 10,000 | $0.21 | Discretionary |
| Jul 13, 2006 | IRBO | $1.1K | Sale | 5,000 | $0.21 | Discretionary |