X0202 4 2007-09-14 0 0001031927 SONTRA MEDICAL CORP SONT.OB 0001278255 MOONEY PATRICK T C/O SONTRA MEDICAL CORPORATION 10 FORGE PARKWAY FRANKLIN MA 02038 1 1 0 0 Chief Executive Officer Common Stock 2007-09-14 4 A 0 625907 A 625907 D Employee Stock Option (right to buy) 2.39 2007-09-14 4 A 0 500000 0 A 2017-09-14 Common Stock 500000 500000 D Received in exchange for 1,436,885 shares of common stock of Durham Pharmaceuticals Ltd. (d/b/a Echo Therapeutics, Inc.) ("Echo") in connection with the merger (the "Merger") of Echo with and into a wholly-owned subsidiary of Sontra Medical Corp. (the "Company"). On the effective date of the Merger, the closing price of the common stock of the Company was $2.39 per share. In connection with the Merger, each outstanding share of Echo common stock was cancelled, extinguished, and converted automatically into the right to receive 0.4356 shares of the Company's common stock. The option vests in three equal annual installments beginning on September 14, 2007. /s/ Patrick T. Mooney 2007-09-17