4 2007-12-14 0 0001032033 SLM 0001065138 8obutun$ 12061 Bluemont Way Reston VA 20190 1 1 0 0 Chairman & CEO Common Stock 2007-12-14 4 S 0 13300 27.5600 D 418765.0000 D Common Stock 2007-12-14 4 S 0 2800 27.5650 D 415965.0000 D Common Stock 2007-12-14 4 S 0 100 27.5670 D 415865.0000 D Common Stock 2007-12-14 4 S 0 14500 27.5700 D 401365.0000 D Common Stock 2007-12-14 4 S 0 1000 27.5750 D 400365.0000 D Common Stock 2007-12-14 4 S 0 200 27.5790 D 400165.0000 D Common Stock 2007-12-14 4 S 0 7100 27.5800 D 393065.0000 D Common Stock 2007-12-14 4 S 0 800 27.5830 D 392265.0000 D Common Stock 2007-12-14 4 S 0 200 27.5850 D 392065.0000 D Common Stock 2007-12-14 4 S 0 100 27.5870 D 391965.0000 D Common Stock 2007-12-14 4 S 0 1900 27.5880 D 390065.0000 D Common Stock 2007-12-14 4 S 0 100 27.5890 D 389965.0000 D Common Stock 2007-12-14 4 S 0 7400 27.5900 D 382565.0000 D Common Stock 2007-12-14 4 S 0 400 27.5950 D 382165.0000 D Common Stock 2007-12-14 4 S 0 700 27.5980 D 381465.0000 D Common Stock 2007-12-14 4 S 0 52000 27.6000 D 329465.0000 D Common Stock 2007-12-14 4 S 0 1900 27.6050 D 327565.0000 D Common Stock 2007-12-14 4 S 0 200 27.6080 D 327365.0000 D Common Stock 2007-12-14 4 S 0 100 27.6090 D 327265.0000 D Common Stock 2007-12-14 4 S 0 45115 27.6100 D 282150.0000 D Common Stock 2007-12-14 4 S 0 2800 27.6150 D 279350.0000 D Common Stock 2007-12-14 4 S 0 200 27.6190 D 279150.0000 D Common Stock 2007-12-14 4 S 0 17400 27.6200 D 261750.0000 D Common Stock 2007-12-14 4 S 0 800 27.6250 D 260950.0000 D Common Stock 2007-12-14 4 S 0 200 27.6290 D 260750.0000 D Common Stock 2007-12-14 4 S 0 11800 27.6300 D 248950.0000 D Common Stock 2007-12-14 4 S 0 4800 27.6350 D 244150.0000 D Common Stock 2007-12-14 4 S 0 100 27.6380 D 244050.0000 D Common Stock 2007-12-14 4 S 0 4800 27.6400 D 239250.0000 D Common Stock 2100.0000 I By Immediate Family This is form 8 of 10 for reporting Mr. Lord's transactions from December 14, 2007. By: Mary F. Eure (POA) 2007-12-18