OPNT Opiant Pharmaceuticals Inc

OPNET Technologies, Inc. (NASDAQ:OPNT) will hold an investor conference call on Monday, May 16, 2005 at 5:00 pm Eastern Time to review financial results for the fourth quarter of fiscal 2005. OPNET's fiscal 2005 fourth quarter financial results will be released after the market closes on Monday, May 16, 2005. To listen to the OPNET investor conference call: -- Call 877-407-9205 in the U.S. or 201-689-8054 for international callers, or -- Use the webcast at www.opnet.com, or at www.vcall.com (click on OPNT under "Today's VCalls"). Investors are advised to go to the web site at least 15 minutes early to register, download, and install any necessary audio software. To listen to the archived call: -- Call the replay phone number at 877-660-6853 or 201-612-7415 for international callers. For replay, enter account # 286, conference ID # 147919. The replay will be available from 7:00 pm Eastern Time May 16th through 11:59 pm Eastern Time May 20th. -- The webcast will be available at www.opnet.com or at www.vcall.com, archived for seven days. About OPNET Technologies, Inc. Founded in 1986, OPNET Technologies, Inc. is a leading provider of management software for networks and applications. For more information about OPNET and its products, visit www.opnet.com. Note to editors: The word OPNET is spelled with all upper-case letters.