EXHIBIT 11 SPARTECH CORPORATION AND SUBSIDIARIES STATEMENT RE COMPUTATION OF PER SHARE EARNINGS (In thousands, except per share amounts) THIRTEEN WEEKS ENDED January 28, January 29, 1995 1994 NET EARNINGS Net Earnings $ 3,125 $ 2,103 Preferred stock accretion (549) (518) Add: Interest savings, net of tax effect, on retirement of debt from the proceeds received from the exercise of options and warrants in excess of 20% limitation 6 70 Primary net earnings applicable to common shares 2,582 1,655 Add: Preferred stock accretion elimination resulting from the assumed conversion of preferred stock 549 518 Fully diluted net earnings applicable to common shares $ 3,131 $ 2,173 WEIGHTED AVERAGE SHARES OUTSTANDING Weighted average common shares outstanding 8,681 7,906 Add: Shares issuable from assumed exercise of options and warrants in excess of 20% limitation 848 1,408 Primary weighted average shares outstanding 9,529 9,314 Add: Shares issuable from assumed conversion of preferred stock 14,275 14,275 Fully diluted weighted average shares outstanding 23,804 23,589 NET EARNINGS PER SHARE Primary $ .27 $ .17 Fully Diluted $ .13 $ .09