EXHIBIT 11.1 CHESAPEAKE CORPORATION AND SUBSIDIARIES COMPUTATION OF NET INCOME PER SHARE OF COMMON STOCK for the three years ended December 31, 1996 (Share amounts in thousands, dollar amounts in millions, except for per share amounts) 1996 1995 1994 Primary: Weighted average number of common shares outstanding 23,528 23,824 23,569 Net additions to common shares assuming exercise of dilutive options, determined by treasury stock method 117 227 206 Common shares and equivalents 23,645 24,051 23,775 Net income $30.1 $93.4 $37.6 Per share amount $1.27 $3.88 $1.58 Fully diluted: Common shares and equivalents 23,645 24,051 23,775 Net additional common shares issuable upon exercise of dilutive options, determined by treasury stock method using year-end market price, if higher than average price 25 5 28 Common shares, equivalents and other potentially dilutive securities 23,670 24,056 23,803 Net income for fully diluted computation $30.1 $93.4 $37.6 Per share amount (a) $1.27 $3.88 $1.58 NOTE: (a) Dilution is less than 3%.