J. Matthew Singleton, Director at CUBIST PHARMACEUTICALS INC (CBST), sold 27,500 shares at $55.48 ($1.5M) on 2013-05-22, disclosed to the SEC on 2013-05-22.
Open-market sale of $1.5M CBST by Director. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
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