Dec 12 (Reuters) - Optiva Inc OPT.TO :
* REPORTS FOURTH QUARTER AND FISCAL 2018 FINANCIAL RESULTS AND ANNOUNCES CHANGE TO FISCAL YEAR END
* QTRLY BASIC AND DILUTED LOSS PER SHARE $2.75
* Q4 EARNINGS PER SHARE VIEW $-1.01 -- REFINITIV IBES DATA
* QTRLY REVENUES $27.3 MILLION VERSUS $33.8 MILLION
* QTRLY TOTAL OF COMPANY'S COSTS OF REVENUE AND OPERATING EXPENSES DECLINED BY $8.3 MILLION OR 20% RELATIVE TO Q4 OF 2017