X0202 4 2007-05-18 0 0000320174 BSD MEDICAL CORP bsm 0001300206 Sennewald Gerhard W VIA DEL PANTHEON 45/7A ROME L6 00186 ITALY 1 0 1 0 Common Stock 2007-05-18 2007-05-21 4 M 0 10000 0.39 A 6642851 D Common Stock 2007-05-18 2007-05-21 4 M 0 5000 1.11 A 6647851 D Common Stock 2007-05-18 2007-05-21 4 M 0 15000 0.66 A 6662851 D Common Stock 2007-05-18 2007-05-21 4 M 0 15000 0.56 A 6677851 D Common Stock 2007-05-18 2007-05-21 4 M 0 15000 0.64 A 6692851 D Common Stock 2007-05-18 2007-05-21 4 M 0 10000 1.2 A 6702851 D Common Stock 2007-05-18 2007-05-21 4 M 0 5000 2.44 A 6707851 D Option to purchase common stock 0.39 2007-05-18 2007-05-21 4 M 0 10000 0.39 D 2004-09-01 2009-01-01 Common Stock 10000 227065 D Option to purchase common stock 1.11 2007-05-18 2007-05-21 4 M 0 5000 1.11 D 2005-09-01 2010-09-01 Common Stock 5000 222065 D Option to purchase common stock 0.66 2007-05-18 2007-05-21 4 M 0 15000 0.66 D 2002-09-01 2009-01-01 Common Stock 15000 207065 D Option to purchase common stock 0.56 2007-05-18 2007-05-21 4 M 0 15000 0.56 D 2002-09-01 2012-09-01 Common Stock 15000 192065 D Options to purchase common stock 0.64 2007-05-18 2007-05-21 4 M 0 15000 0.64 D 2004-09-01 2014-09-01 Common Stock 15000 177065 D Option to purchase common stock 1.2 2007-05-18 2007-05-21 4 M 0 10000 1.2 D 2005-09-01 2015-09-01 Common Stock 10000 167065 D Option to purchae common stock 2.44 2007-05-18 2007-05-21 4 M 0 5000 2.44 D 2006-09-20 2015-09-20 Common Stock 5000 162065 D Options exercised at a price of $.39 per share Options exercised at a price of $1.111 per share Options exercised a price of $.66 per share Options exercised at a price of $.56 per share Options exercised at a price of $.64 per share Options exercise at a price of $1.20 per share Options exercised at a price of $2.44 per share options exercised at a price of $.39 Exercise of stock option at $.66 per share Options exercised at a price of $.56 per share options exercised at a price of $.64 per share options exercised at a price of $1.20 per share options exercised at price of $2.44 per share Options exercise at a price of $1.11 per share Gerhard W. Sennewald 2007-05-21