Diluted 28,061,658 29,749,319
NIGHTHAWK RADIOLOGY HOLDINGS, INC.
HISTORICAL VOLUMES
Growth Rates Acquisition Contribution -
Total Year First 12 months
Quarter Year Volumes Sequential over Year DayHawk ATN TDS Radlinx
Q1 2004 120,554 36% 210% - - - -
Q2 2004 152,640 27% 178% - - - -
Q3 2004 182,737 20% 133% - - - -
Q4 2004 193,883 6% 119% 8,316 - - -
FY 2004 649,814 149% 149%
Q1 2005 222,341 15% 84% 15,850 - - -
Q2 2005 266,023 20% 74% 17,355 - - -
Q3 2005 298,759 12% 63% 18,905 - - -
Q4 2005 328,815 10% 70% 8,480 29,640 - -
FY 2005 1,115,938 72% 72%
Q1 2006 364,155 11% 64% - 32,130 - -
Q2 2006 417,269 15% 57% - 32,622 - -
Q3 2006 463,028 11% 55% - 32,086 - -
Q4 2006 448,084 (3%) 36% - - - -
FY 2006 1,692,536 52% 52%
Q3 YTD 2006 1,244,452 n/a n/a
Q1 2007 484,477 8% 33% - - 27,089 -
Q2 2007 731,418 51% 75% - - 51,095 137,611
Q3 2007 787,673 8% 70% - - 52,708 143,339
Q3 YTD 2007 2,003,568 61% 61%
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