Jr Douglas J. Macmaster serves as Executive at MARTEK BIOSCIENCES CORP, where they oversee executive responsibilities. Since joining the company, Jr Douglas J. Macmaster has executed 12 insider transactions totaling $385.7K, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 25, 2011 involved selling 2,533 shares valued at $79.8K.
Jr Douglas J. Macmaster currently holds 2,533 shares of MARTEK BIOSCIENCES CORP (MATK), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Jr Douglas J. Macmaster has been a net seller of MATK stock. They have purchased $0 and sold $385.7K worth of shares.
Jr Douglas J. Macmaster's most recent insider trade was on Feb 25, 2011, when they sold 2,533 shares at $31.50 per share.
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| $N/A |
| Discretionary |
| Feb 18, 2011 | MATK | $796.1K | Tender | 25,273 | $31.50 | Discretionary |
| Mar 18, 2010 | MATK | $0 | Option Exercise | 3,515 | $N/A | Discretionary |
| Mar 9, 2010 | MATK | $235.5K | Payment | 10,465 | $22.50 | Discretionary |
| Mar 9, 2010 | MATK | $180.0K | Option Exercise | 15,000 | $12.00 | Discretionary |
| Sep 23, 2009 | MATK | $116.8K | Sale | 4,907 | $23.80 | Discretionary |
| Mar 13, 2009 | MATK | $0 | Option Exercise | 2,034 | $N/A | Discretionary |
| Jan 27, 2009 | NTEC | $0 | Option Exercise | 8,197 | $N/A | Discretionary |
| Jun 18, 2008 | MATK | $268.9K | Sale | 8,000 | $33.61 | Discretionary |
| Jun 18, 2008 | MATK | $62.5K | Option Exercise | 10,000 | $6.25 | Discretionary |
| Mar 13, 2008 | MATK | $0 | Option Exercise | 2,907 | $N/A | Discretionary |