$4.5M of CBST sold by Michael Bonney between 01/28/2013 - 01/29/2013

Bonney Michael W sold 105,452 shares of Cubist Pharmaceuticals Inc stock, or $4,528,285 worth, as noted in an SEC Filing today. As reported in the filing, the transactions occurred between January 28, 2013 - January 29, 2013.

After the transaction, Bonney Michael W's stake was reported as 142,500 shares of Cubist Pharmaceuticals Inc stock. In addition, Bonney Michael W performed several other transactions, including using transaction codes 'M' (exercise, usually of options).

As noted on January 30, 2013, Bonney Michael W's sale was done directly over 2 transactions from January 28, 2013 to January 29, 2013. The share price ranged from $42.85 to $43.09 according to the regulatory filing detailing the transactions.

If we look over the past 12 months, Bonney Michael W has sold a total of 105,452 shares of Cubist Pharmaceuticals Inc, proceeds from the sale totaled $4,528,285. Over the same time period, Bonney Michael W has purchased no shares of Cubist Pharmaceuticals Inc stock. Bonney Michael W has also performed other transactions including exercise of options .

Let's take a quick, high-level look at insider trading at Cubist Pharmaceuticals Inc over the past 12 months. A total of 340,147 shares of Cubist Pharmaceuticals Inc stock was sold by insiders, totaling $14,729,562. Over the same time 12 month time period, no shares of Cubist Pharmaceuticals Inc were purchased by company insiders.

To view the complete SEC Filing: Cubist Pharmaceuticals Inc Form 4 (Insider Trading) SEC Filing