Three Months Ended % Nine Months Ended % May 31, Increase May 31, Increase
1998 1997 1998 1997
Net sales $150,979 $75,018 101.3% $377,188 $202,044 86.7% Cost of sales 65,197 28,485 128.9% 157,551 78,286 101.3% Gross profit 85,782 46,533 84.3% 219,637 123,758 77.5% Selling, general and administrative expenses 55,920 32,935 69.8% 145,488 86,288 68.6% Operating income 29,862 13,598 119.6% 74,149 37,470 97.9% Other income, net 1,109 976 13.6% 3,185 2,858 11.4% Income before income tax provision 30,971 14,574 112.5% 77,334 40,328 91.8% Income tax provision 11,591 4,862 138.4% 27,781 14,052 97.7%
Net income $19,380 $9,712 99.5% $49,553 $26,276 88.6%
Pro forma net income $19,380 9,539 103.2% $48,611 $25,794 88.5%
Pro forma income per common share: Basic $0.27 $0.14 $0.69 $0.38 Diluted $0.26 $0.13 $0.66 $0.37
Weighted average common shares outstanding: Basic 71,372 69,638 70,950 67,330 Diluted 74,180 71,558 73,621 69,678
(1) Pro forma net income reflects a pro forma tax provision for Richardson Labs, Inc. for periods prior to |