Please Note: Blog posts are not selected, edited or screened by Seeking Alpha editors.

Top Insider Trades 2/26/13: ABMD, TRLA, CLMS, VPRT

|Includes:ABIOMED, Inc. (ABMD), CLMS, CMPR, Z

Daily Top Insider Trades Instablog

  • Did you know? You could have seen the trades below within hours of being filed. If you want more Top Trades emailed 4 times a day, sign up for our Free Intra-Day Top Trades Alerts.

In a victory for common sense, the trading behavior of company executives, directors, and large shareholders in the stocks of firms they're registered "insiders" at have been proven profitable to monitor by both academic studies and (more importantly) the experience of professional investors.

Below are lists of the top 10 mainly open-market insider purchases and sales filed at the Securities and Exchange Commission Tuesday, February 26, 2013 as ranked by dollar value.

Please note, however, that these are factual lists (with edits to remove some noise), 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.

We should also point out that we are presently in a slow filing time for insiders because many companies still have their trading windows closed to their executives until their June quarter earnings are released.

But at, we find new investment ideas just about every day using these and more intricate insider screens to determine where we should focus our subsequent fundamental and technical analysis. And while stocks don't (or shouldn't) move up or down based on insider activity alone, insiders tend to be good indicators of when real stock-moving events like earnings surprises, corporate actions, and new products may be in the offing.

So use these regular blog posts as the initial research tools they are meant to be, and click the links in the tables to analyze a company's or insider's full insider history. Also feel free to email with any questions on our proprietary insider data, and how it is best analyzed.

Insider Purchases
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Termeer Henri A DIR Abiomed ABMD B $1,497,794
Calamos John P Sr CB,CEO,BO Calamos Asset Mgt CLMS B $1,467,287
Smith Thomas W BO Vistaprint VPRT B $1,323,000
Steelhead Partners BO Endeavour Intl END B $875,835
Pennant Capital BO Universal Stainless USAP B $577,555
Kent Richard S DIR Cytomedix CMXI JB* $530,000
Cressey Bryan C DIR Belden BDC B $500,369
RGM Capital BO Support Com SPRT B $400,000
Dueser F Scott CB,PR,CEO First Finl Bank FFIN B $263,972
RGM Capital BO Guidance Software GUID B $252,989

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Schmidt Eric E CB,DIR Google GOOG AS $74,477,482
Mastercard Fdn BO Mastercard MA S $12,888,551
Frazier Laura BO Brown Forman BFB JS* $7,559,434
Fayez Sarofim Inv BO Trulia TRLA S $5,886,936
Accel IX DIR,BO Trulia TRLA AS $4,659,650
Inkinen Sami DIR Trulia TRLA AS $3,869,082
Ryan Vincent J DIR Iron Mountain IRM AS $3,354,637
Garcia Tunon A VP,CFO,SEC Westinghouse Air WAB S $2,924,700
De Vries Glen M PR,DIR Medidata Solutions MDSO AS $2,838,835
Hayes John D VP American Express AXP S $1,993,158

Source: | Key to Insider Title and Trans Type Codes