David M. Pernock

This profile gathers the share dealings of David M. Pernock in Martek Biosciences Corp. The record holds 4 filings, for trades running from 17 September 2010 to 25 February 2011.

None of the filings is a plain purchase or sale on the open market; they cover grants, option exercises and other movements. Compensation-driven entries like these are tracked, but they say little about how insiders judge the share price.

The latest filing, published on 1 March 2011, reports a share grant in Martek Biosciences Corp. Typically, a trade is published a median of 4 days after it takes place. Section 16 rules allow two business days to file each Form 4. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.