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

Top Insider Trades 4/25/13: SPB, OPK, MSFT, BERY

|Includes:BERY, MSFT, OPK, Spectrum Brand Holdings, Inc. (SPB)

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 Thursday, April 25, 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
Harbinger BO Spectrum Brands SPB B $5,012,550
Frost Phillip Md CEO,CB,BO Opko Health OPK B $692,447
Wooten M Rhem VP Hannon Armstrong HASI JB* $300,000
Gaiam DIR,BO Real Goods Solar RSOL JB* $99,999
Brogan Joseph J VCB,DIR Bcb Bancorp BCBP B $93,380
Giddiens Ronald N DIR First Finl Bank FFIN B $59,752
Osborne Richard J DIR Hannon Armstrong HASI B $56,500
Jeanquart Louis DIR Baylake BYLK B $18,800
Quinlan Mark D VP Firstmerit FMER B $16,790
Grant David CEO,DIR Mediashift MSHF JB* $15,000

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Gates William H III DIR Microsoft MSFT AS $390,360,320
Apollo Mgt Gp BO Berry Plastics BERY JS* $285,181,280
Housenbold Jeffrey PR,CEO,DIR Shutterfly SFLY AS $6,136,275
Farrington Deborah DIR Netsuite N AS $3,786,276
Ryder Robert P VP,CFO Constellation Brands STZ S $3,619,463
Jacobson Mitchell DIR,BO MSC Industrial MSM S $3,531,150
Phalen James S VP State Street STT S $1,710,845
O Shea Paul J VP,DIR Enstar ESGR AS $1,199,389
Elfers Jane T PR,CEO,DIR Childrens Place PLCE AS $760,984
Rottenberg Erika VP,GC,SEC Linkedin LNKD AS $750,646

Source: | Key to Insider Title and Trans Type Codes