* V-One Corp., a Germantown network security company, lost $932,840 (4 cents a share) during its first quarter, compared with a loss of $352,598 (2 cents) during the same quarter last year. Revenue was $648,719, a decrease of 35.5 percent from a year ago. President and chief executive Margaret E. Grayson said the results reflected the delay in funding until late January for the company's large government programs. Shares of V-One closed down 6 cents, at 21 cents.

* Lockheed Martin of Bethesda signed a $60 million, three-year contract with AT&T for integrated data and voice services. Under the terms of the contract, AT&T will provide and manage voice, data and Internet services to support Lockheed Martin's domestic and international telecommunications.

* Cel-Sci Corp., a Vienna biotechnology company, lost $1.2 million (2 cents) during its second fiscal quarter, compared with a loss of $1 million (2 cents) during the same quarter ended March 31 last year. Revenue for the quarter was $99,214, compared with $82,687 a year ago. For the six months ended March 31, the company lost $2.3 million (4 cents) on revenue of $172,449, compared with a loss of $2.7 million (6 cents) on $135,642 in revenue last year. Shares of Cel-Sci closed up 2 cents, at 98 cents.

* Group 1 Software of Lanham earned $3.9 million (25 cents) on $37.9 million in revenue during its fourth fiscal quarter ended March 31, up 14 percent from $3.5 million (22 cents) on $29.2 million in revenue during the year-ago quarter. The company earned $9.5 million (60 cents) on $118.7 million in revenue for the fiscal year ended March 31, up from net income of $8.8 million (59 cents) on $104.3 million in revenue the prior year. Group 1 announced April 13 that it would be acquired by Pitney Bowes. The agreement is subject to regulatory review. Shares of Group 1 closed at $22.98, up 9 cents.

* GTSI, a Chantilly government technology contractor, said its sales for April were $73.8 million.

Compiled from reports by Washington Post staff writers and Dow Jones News Service