MARTEK BIOSCIENCES CORP

MARTEK BIOSCIENCES CORP insiders are currently net buyers of MATK stock, showing bullish sentiment over the past 90 days. Executives have purchased $503.7M while selling $1.8M, resulting in a positive net flow of $501.8M. This buying activity represents 100% of total transaction volume.

MARTEK BIOSCIENCES CORP has 19 active insiders who have filed SEC Form 4 transactions in the past 90 days. Dsm N.v. Royal (Executive) leads with 4 transactions totaling $503.2M. Robert J. Flanagan (Executive) follows with 12 transactions worth $11.3M. Open-market purchases require insiders to invest their own capital, demonstrating genuine conviction.

The Insider Alignment Score measures the ratio of buying to selling activity on a 0-100 scale. MARTEK BIOSCIENCES CORP's current score of 100/100 indicates bullish insider sentiment. Scores above 60 suggest insiders are accumulating shares faster than selling, reflecting $503.7M in purchases versus $1.8M in sales.

The most recent insider transaction occurred on Feb 25, 2011, when Beery James (Executive) acquired 6,048 shares at $0.00 per share for $0. This appears to be a discretionary trade.

Based on SEC Form 4 filings from the past 90 days, MATK insider trading sentiment is currently bullish with an Alignment Score of 100/100. The net insider flow of $501.8M reflects accumulation, with 100% of volume being purchases.

SEC Form 4 is the primary disclosure mechanism for insider trading at publicly traded companies like MARTEK BIOSCIENCES CORP. Corporate insiders must file within two business days of any transaction, making it one of the most timely sources of executive sentiment. At MATK, we track all Form 4 filings—currently showing 161 transactions from 19 insiders over 90 days.

A 10b5-1 plan allows MARTEK BIOSCIENCES CORP executives to pre-schedule stock sales when they don't possess material non-public information. At MATK, approximately 0% of recent transactions are 10b5-1 trades. Most trading activity at MATK appears discretionary, making insider signals more meaningful.

You can monitor MARTEK BIOSCIENCES CORP (MATK) insider trading activity on this page, which updates within hours of new SEC Form 4 filings. We track all 19 active insiders and provide real-time transaction feeds, the Alignment Score, 10b5-1 vs. discretionary breakdowns, and direct links to SEC EDGAR filings.

Our Alignment Score measures the ratio of insider buying to selling on a scale of 0-100. A score above 70 indicates strong bullish sentiment, while below 30 suggests bearish activity. MARTEK BIOSCIENCES CORP's current score of 100/100 indicates strong bullish sentiment with executives accumulating shares. This is calculated from $503.7M in purchases versus $1.8M in sales over 90 days, resulting in a net flow of $501.8M.

SEC Form 4 filings are mandatory reports that MARTEK BIOSCIENCES CORP insiders must submit within 2 business days. Each filing includes the insider's name, relationship, transaction type, shares, and price. Transaction codes: P (purchase), S (sale), A (award), M (option exercise), G (gift). At MATK, the most common type is "A" with 16 occurrences. The most recent Form 4 was filed on Feb 25, 2011 by Beery James.

Rule 10b5-1 allows corporate insiders to establish pre-scheduled trading plans when they don't possess material non-public information. At MARTEK BIOSCIENCES CORP, approximately 0% of recent transactions are executed under 10b5-1 plans, while 100% appear to be discretionary trades. The low percentage means most insider activity at MATK represents discretionary decisions with more informational value.