* Manugistics Group named Joe Cowan as its chief executive. Gregory J. Owens, who has been CEO, will continue as chairman of the board for the Rockville company, which provides supply chain management software. Cowan was most recently president and chief executive of EXE Technologies, a Dallas firm that was acquired last year.

* Online Resources, a McLean company that provides services for Internet banking, earned $1.2 million (6 cents a share) on $10.1 million in revenue during its second quarter ended June 30, compared with a loss of $148,000 (a loss of 1 cent) on $8.4 million in revenue during the same period a year ago. For the six months ended June 30, the company earned $1.6 million (8 cents) on $19.8 million in revenue, down from a net income of $2 million (13 cents) on $19.4 million in revenue during the same period last year. Shares of Online Resources closed at $5.90, down 20 cents or 3.3 percent.

* Tessco Technologies, a Hunt Valley supply chain company serving the wireless industry, earned $1.4 million (32 cents a share) on $110.6 million in revenue during its first fiscal quarter ended June 27, up from a loss of $313,300 (7 cents) on $70 million in revenue during the same quarter last year. Shares of Tessco closed at $15.94, up $1.07, or 7.2 percent.

* Aether Systems, an Owings Mills wireless data service provider, agreed to sell its Transportation Division to an affiliate of Platinum Equity for $25 million in cash. The sale is subject to the approval of Aether's stockholders. The company also said several parties were interested in purchasing its remaining wireless business, the Mobile Government Division. The company's new business plan is to invest in mortgage-backed securities.

* MobilePro, a Bethesda wireless and broadband telecommunications company, agreed to acquire the long-distance customer base of Teligent, a Herndon wireless broadband service provider. Terms were not disclosed. MobilePro expects the deal to add more than $3 million in annual revenue and 3,400 business customers. The transaction is subject to regulatory approval and is expected to close in the fourth quarter.

* Elantic Telecom, a Richmond wholesaler of fiber bandwidth and carrier services, filed for reorganization under Chapter 11 as part of a financial restructuring plan to reduce its debt. The company said its filing will not affect its day-to-day operations.

Compiled from reports by Washington Post staff writers.