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Top Insider Trades 6/6/13: SNTA, EPZM, UBNT, MVC

|Includes:EPZM, Madrigal Pharmaceuticals, Inc. (MDGL), MVC, UBNT

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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 Thursday, June 6, 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
Summit Midstream DIR,BO Summit Midstream SMLP JB* $48,992,860
Kovner Bruce DIR,BO Synta Pharm SNTA B $9,270,354
Harbinger BO Spectrum Brands SPB B $3,882,662
Keene Harold L DIR,BO New Peoples Bk NWPP JB* $1,050,000
Celgene Euro Inv BO Epizyme EPZM JB* $999,990
Goldstein Phillip DIR MVC Capital MVC B $334,590
Rosenfeld Ronald A DIR NY Com Banc NYCB B $261,370
Astellas Venture BO Epizyme EPZM JB* $229,995
Keller Wilhelm DIR Biologix Hair BLGX JB* $200,000
Zelter James C CEO,DIR Apollo Investment AINV B $159,200

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Summit Partners BO Ubiquiti Networks UBNT JS* $96,000,000
Greenspring Assoc BO Exacttarget ET S $78,013,920
Wilson Dennis J DIR,BO Lululemon Athletica LULU AS $32,130,882
Gross Robert G DIR Monro Muffler MNRO S $6,347,083
Andreotti Lamberto CEO,DIR Bristol Myers BMY S $4,774,000
Franklin Martin E CB,DIR Jarden JAH AS $4,591,092
Wilson Laurence GC,SEC YELP YELP AS $3,878,568
Ashken Ian G H VCB,CFO,DIR Jarden JAH AS $2,754,000
Tutor Ronald N CB,CEO,BO Tutor Perini TPC S $1,957,892
Stiefler Jeffrey E DIR Lpl Financial LPLA S $1,745,304

Source: | Key to Insider Title and Trans Type Codes