opnet
Press release

OPNET Technologies, Inc. Announces Initial Public Offering of 4.0 Million Shares of Common Stock at $13.00 Per Share

WASHINGTON, D.C. -- August 25, 2000 -- OPNET Technologies, Inc. (Nasdaq: OPNT) today announced the pricing of an initial public offering of 4.0 million shares of Common Stock, all of which are being issued and sold by the Company, at a price of $13.00 per share. The lead manager for the offering is Morgan Stanley Dean Witter and the co-managers are Robertson Stephens and Friedman Billings Ramsey. OPNET has granted the underwriters an option to purchase an additional 600,000 shares of its Common Stock to cover over-allotments, if any.

The Common Stock is listed on the Nasdaq National Market under the symbol "OPNT." The Company expects to use the net proceeds from this offering for general corporate purposes, including working capital and capital expenditures.

Copies of the final prospectus relating to the offering may be obtained from the Prospectus Departments of: Morgan Stanley Dean Witter, (212) 761-4000, 1585 Broadway, New York, NY 10036, Robertson Stephens, (415) 781-9700, 555 California Street, 26th Floor, San Francisco, CA 94104 or Friedman Billings Ramsey, (703) 312-9588, 1001 19th Street North, Arlington, VA 22209.

About OPNET Technologies, Inc.

The OPNET family of intelligent network management software enables our customers to optimize the performance and maximize the availability of communications networks and networked applications. The OPNET product suite combines predictive simulations and a comprehensive understanding of networking technologies to enable network professionals to more effectively design and deploy networks, diagnose network and application performance problems, and predict the impact of proposed network modifications.

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Note to editors: The word OPNET is spelled with all upper-case letters.

OPNET Media Contact:
Margarita Castillo
OPNET Technologies, Inc.
(240) 497-3000
Media@opnet.com
www.opnet.com

OPNET Investor Relations:
Mel Wesley
OPNET Technologies
(240) 497-3000
ir@opnet.com
www.opnet.com