The suit charges Worldspace as well as several of it's executive officers, with violations of federal securities laws.

The plaintiff claims that Worldspace had made false and misleading statements concerning the company's operations and financial performance that caused the WRSP stock price to become artificially inflated.

If you purchased Worldspace stock or options, you're not required to have sold your WRSP stock or options in order to claim damages. 

[Press Release]

Here's a separate firms' filing (PDF).