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 0 300 27.2250 D 44587.0000 D Common Stock 2100.0000 I By Immediate Family Common Stock 2007-12-14 4 S 0 200 27.1600 D 83005.0000 D Common Stock 2007-12-14 4 S 0 100 27.1690 D 82905.0000 D Common Stock 2007-12-14 4 S 0 4700 27.1700 D 78205.0000 D Common Stock 2007-12-14 4 S 0 1400 27.1800 D 76805.0000 D Common Stock 2007-12-14 4 S 0 6300 27.1900 D 70505.0000 D Common Stock 2007-12-14 4 S 0 21318 27.2000 D 49187.0000 D Common Stock 2007-12-14 4 S 0 3300 27.2100 D 45887.0000 D Common Stock 2007-12-14 4 S 0 1000 27.2200 D 44887.0000 D Common Stock 2007-12-14 4 S 0 4000 27.0500 D 141205.0000 D Common Stock 2007-12-14 4 S 0 100 27.0550 D 141105.0000 D Common Stock 2007-12-14 4 S 0 3700 27.0600 D 137405.0000 D Common Stock 2007-12-14 4 S 0 800 27.0650 D 136605.0000 D Common Stock 2007-12-14 4 S 0 6400 27.0700 D 130205.0000 D Common Stock 2007-12-14 4 S 0 100 27.0750 D 130105.0000 D Common Stock 2007-12-14 4 S 0 3000 27.0800 D 127105.0000 D Common Stock 2007-12-14 4 S 0 900 27.0850 D 126205.0000 D Common Stock 2007-12-14 4 S 0 2500 27.0900 D 123705.0000 D Common Stock 2007-12-14 4 S 0 2900 27.0950 D 120805.0000 D Common Stock 2007-12-14 4 S 0 5100 27.1000 D 115705.0000 D Common Stock 2007-12-14 4 S 0 6700 27.1100 D 109005.0000 D Common Stock 2007-12-14 4 S 0 2300 27.1150 D 106705.0000 D Common Stock 2007-12-14 4 S 0 1300 27.1200 D 105405.0000 D Common Stock 2007-12-14 4 S 0 12600 27.1250 D 92805.0000 D Common Stock 2007-12-14 4 S 0 100 27.1290 D 92705.0000 D Common Stock 2007-12-14 4 S 0 3500 27.1300 D 89205.0000 D Common Stock 2007-12-14 4 S 0 200 27.1350 D 89005.0000 D Common Stock 2007-12-14 4 S 0 1400 27.1400 D 87605.0000 D Common Stock 2007-12-14 4 S 0 4400 27.1500 D 83205.0000 D This is form 4 of 10 for reporting Mr. Lord's transactions from December 14, 2007. By: Mary F. Eure (POA) 2007-12-18