1 EXHIBIT 11 ALLEN TELECOM INC. ------------------ EARNINGS PER COMMON SHARE DATA ------------------------------ (Amounts in Thousands) Net income and common shares used in the calculations of earnings per common share were computed as follows: THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ---------------------------------- --------------------------------- 1997 1996 1997 1996 --------------- --------------- --------------- ------------- Income: - ------- Net income applicable to common stock - primary $ 6,734 $ 5,137 $ 13,760 $ 9,382 =============== =============== =============== ============= Common Shares: - -------------- Weighted average outstanding common shares 26,829 26,419 26,741 26,401 Dilutive common stock options 392 779 385 674 --------------- --------------- --------------- ------------- Common shares - primary 27,221 27,198 27,126 27,075 Additional common shares issuable for stock options -- -- 15 1 --------------- --------------- --------------- ------------- Common shares - fully diluted 27,221 27,198 27,141 27,076 =============== =============== =============== ============= This calculation of fully diluted earnings per common share is submitted in accordance with Regulation S-K Item 601 (b) (11) although not required for income statement presentation because it results in dilution of less than 3 percent. 18