Page 5 Exhibit 11 NAI TECHNOLOGIES, INC. AND SUBSIDIARIES (in thousands) - -------------------------------------------------------------------------------- Three Months Ended Sept. 30, Sept. 28, 1996 1995 - -------------------------------------------------------------------------------- Net Income (loss) $ 964 ($2,296) Average shares of common stock outstanding during the period 8,571 7,459 Incremental shares from assumed exercise of stock options, stock warrants & employee stock purchase plan (primary) 429 0 Total shares used to calculate PEPS* 9,000 7,459 ------- ------- Primary earnings per share $ 0.11 ($ 0.31) ======= ======= Net Income (loss) $ 964 ($2,296) Interest on Convertible Debt (Net of Taxes) 184 0 Amortization of OID (Net of Taxes) 19 0 Amortization of Deferred Debt Expense (Net of Taxes) 120 0 ------- ------- Adjusted Net Income $ 1,287 ($2,296) ======= ======= Average shares of common stock outstanding during the period 8,571 7,459 Incremental shares from assumed exercise of stock options, stock warrants & employee stock purchase plan (fully diluted) 561 0 Dilution from Convertible Debt 2,789 0 Total shares used to calculate FDEPS* 11,921 7,459 ------- ------- Fully Diluted earnings per share $ 0.11 ($ 0.31) ======= ======= *Per APB 15, when a net loss is reported, exercise or conversion is not to be assumed. Page 6 Exhibit 11 NAI TECHNOLOGIES, INC. AND SUBSIDIARIES (in thousands) - -------------------------------------------------------------------------------- Nine Months Ended Sept. 30, Sept. 28, 1996 1995 - -------------------------------------------------------------------------------- Net Income (loss) $1,329 ($9,195) Average shares of common stock outstanding during the period 8,022 7,356 Incremental shares from assumed exercise of stock options, stock warrants & employee stock purchase plan (primary) 304 0 Total shares used to calculate PEPS* 8,326 7,356 ------ ------- Primary earnings per share $ 0.16 ($ 1.25) ====== ======= Net Income (loss) $1,329 ($9,195) Interest on Convertible Debt (Net of Taxes) 548 0 Amortization of OID (Net of Taxes) 79 0 Amortization of Deferred Debt Expense (Net of Taxes) 345 0 ------- ------- Adjusted Net Income $ 2,301 ($9,195) ======= ======= Average shares of common stock outstanding during the period 8,022 7,356 Incremental shares from assumed exercise of stock options, stock warrants & employee stock purchase plan (primary) 478 0 Dilution from Convertible Debt 2,789 0 Total shares used to calculate FDEPS* 11,289 7,356 ------- ------- Fully Diluted earnings per share $ 0.20 ($ 1.25) ======= ======= *Per APB 15, when a net loss is reported, exercise or conversion is not to be assumed.