John Sperzel, Director at diaDexus, holds ― shares in diaDexus (Ticker: DDXSQ), holds 400.00 shares in T2 Biosystems (Ticker: TTOO), holds 473.45K shares in Chembio Diagnostics (Ticker: CEMI). Most recently, John Sperzel ― shares of diaDexus on ― for an estimated value of ―.