EXHIBIT 11 QUIXOTE CORPORATION AND SUBSIDIARIES Computation of Net Earnings per Average Common and Common Equivalent Share For the Three Months Ended December 31, 1996 ------------------------- Fully Primary Diluted ---------- ---------- Net earnings as reported $1,039,000 $1,039,000 Add interest expense and deferred charge amortization (net of income taxes) 221,000(1) ---------- ---------- Adjusted net earnings for computation (A) $1,039,000 $1,260,000 ========== ========== Average common shares outstanding would be adjusted for the additional shares that would be issued assuming conversion of the debentures and exercise of stock options as follows: Weighted average shares outstanding 7,974,612 7,974,612 Shares assumed issued upon conversion of debentures 947,368 Incremental shares outstanding assuming exercise of stock options using the treasury stock method 38,532 99,163 --------- --------- Average common and common equivalent shares outstanding (B) 8,013,144 9,021,143 ========= ========= Net earnings per common and common equivalent shares (A/B) $ .13 $ .14 ========= ========= Notes: (1) Net earnings for the fully diluted calculation are adjusted for interest expense and deferred charge amortization, assuming exercise of the conversion privilege on the 8% convertible debentures. EXHIBIT 11 QUIXOTE CORPORATION AND SUBSIDIARIES Computation of Net Earnings Per Average Common and Common Equivalent Share For the Six Months Ended December 31, 1996 -------------------------- Fully Primary Diluted ---------- ---------- Net earnings as reported $1,835,000 $1,835,000 Add interest expense and deferred charge amortization (net of income taxes) 443,000(1) ---------- ---------- Adjusted net earnings for computation (A) $1,835,000 $2,278,000 ========== ========== Average common shares outstanding would be adjusted for the additional shares that would be issued assuming conversion of the debentures and exercise of stock options as follows: Weighted average shares outstanding 7,970,957 7,970,957 Shares assumed issued upon conversion of debentures 947,368 Incremental shares outstanding assuming exercise of stock options using the treasury stock method 38,532 99,163 --------- --------- Average common and common equivalent shares outstanding (B) 8,009,489 9,017,488 ========= ========= Net earnings per common and common equivalent share (A/B) $ .23 $ .25 ========= ========= Notes: (1) Net earnings for the fully diluted calculation are adjusted for interest expense and deferred charge amortization, assuming exercise of the conversion privilege on the 8% convertible debentures. EXHIBIT 11 QUIXOTE CORPORATION AND SUBSIDIARIES Computation of Net Earnings Per Average Common and Common Equivalent Share For the Three Months Ended December 31, 1995 ------------------------- Fully Primary Diluted ---------- ---------- Net earnings as reported $ 317,000 $ 317,000 Add interest expense and deferred charge amortization (net of income taxes) 245,000(1) ---------- ---------- Adjusted net earnings for computation (A) $ 317,000 $ 562,000 ========== ========== Average common shares outstanding would be adjusted for the additional shares that would be issued assuming conversion of the debentures and exercise of stock options as follows: Weighted average shares outstanding 7,863,168 7,863,168 Shares assumed issued upon conversion of debentures 1,051,316 Incremental shares outstanding assuming exercise of stock options using the treasury stock method 126,579 126,579 --------- --------- Average common and common equivalent shares outstanding (B) 7,989,747 9,041,063 ========= ========= Net earnings per common and common equivalent shares (A/B) $ .04 $ .06 ========= ========= Notes: (1) Net earnings for the fully diluted calculation are adjusted for interest expense and deferred charge amortization, assuming exercise of the conversion privilege on the 8% convertible debentures. EXHIBIT 11 QUIXOTE CORPORATION AND SUBSIDIARIES Computation of Net Earnings Per Average Common and Common Equivalent Share For the Six Months Ended December 31, 1995 -------------------------- Fully Primary Diluted ---------- ---------- Net loss as reported $(10,245,000) $(10,245,000) Add interest expense and deferred charge amortization (net of income taxes) 490,000(1) ------------ ----------- - Adjusted net loss for computation (A) $(10,245,000) $(9,755,000) ============ ============ Average common shares outstanding would be adjusted for the additional shares that would be issued assuming conversion of the debentures and exercise of stock options as follows: Weighted average shares outstanding 7,863,056 7,863,056 Shares assumed issued upon conversion of debentures 1,051,316 Incremental shares outstanding assuming exercise of stock options using the treasury stock method 126,579 126,579 ----------- ---------- Average common and common equivalent shares outstanding (B) 7,989,635 9,041,951 =========== =========== Net loss per common and common equivalent share (A/B) $ (1.28) $ (1.08) =========== =========== Notes: (1) Net earnings for the fully diluted calculation are adjusted for interest expense and deferred charge amortization, assuming exercise of the conversion privilege on the 8% convertible debentures.