Below are lists of the top 10 mainly open-market insider purchases and sales filed at the Securities and Exchange Commission Wednesday, January 23, 2013, as ranked by dollar value. Please note, however, that these are factual lists, not buy and sell recommendations. Dollar value is only one metric to assess the importance of an insider transaction, and, frankly, often not even the most important metric that determines if an insider transaction is significant.

In insider purchases, Daniel Ivascyn, a lead portfolio manager for PIMCO, bought $2,301,489 worth of the $1.25 billion close-ended PIMCO Dynamic Income Fund (NYSE:PDI), which he runs. Stephen Steinour, Chairman, President, and CEO of Huntington Bancshares Incorporated (NASDAQ:HBAN), bought $281,587 worth of company stock. Antranik Armoudian, President and CEO of Encompass Energy (PINK:EESI), bought $250,000 worth of stock. At SunCoke Energy (NYSE:SXCP), the largest independent producer of high-quality metallurgical coke in the Americas, Chairman and CEO Frederick Henderson bought $228,000 worth of stock, President and COO Michael Thomson bought $95,000 worth of stock, and CFO Mark Newman bought $79,800 worth of stock.

In sales, Goldman Sachs (NYSE:GS) sold $326,261,248 worth of Cobalt International Energy (NYSE:CIE), a development stage oil exploration and production company. At agriculture products company Monsanto (NYSE:MON), Chairman and CEO Hugh Grant sold $3,064,338 worth of company stock. The WK Kellogg Foundation Trust sold $2,097,047 worth of Kellogg (NYSE:K) stock. The Addington Hills Ltd., a beneficiary owner of Ixia (NASDAQ:XXIA), sold $2,016,588 worth of company stock. Ixia provides test systems and service verification platforms for wireless and wired services.


Source: InsiderInsights.com | Key to Insider Title and Trans Type Codes


Source: InsiderInsights.com | Key to Insider Title and Trans Type Codes

For more on the unique screens Insider Insights uses to track insider sales and purchases, please see InsiderInsights.com.

Editor's note: Jonathan Moreland is the founder of Insider Insights and author of "Profit From Legal Insider Trading."