Motient Corp. said it signed a binding agreement with Telecom Satellite Ventures to acquire its stake in Mobile Satellite Ventures LP and its general partner, MSV GP Inc. The result of the transaction will increase Motient’s ownership in MSV by roughly 5.9 percent to about 44.5 percent.

Motient will issue about 8.2 million shares of its common stock to Telecom Satellite Ventures in exchange for the 2.3 MSV limited partnership units held by Telecom, subject to certain terms and conditions.