CSTV Networks, a television network devoted exclusively to college sports as well as a digital media company offering live audio and video feeds of more than 6,000 college sports events a year, said Friday it will be bought by CBS for $325 million in stock.

The two companies plan to close the transaction in January, after CBS’s parent, Viacom, splits into two entities. That separation is expected to happen by the end of this year.

New York-based CSTV was founded just three years ago by President Chris Bevilacqua, a former senior executive at Nike, and Chief Executive Brian T. Bedol and Chairman Stephen Greenberg. Mr. Bedol and Mr. Greenberg also co-founded the Classic Sports Network and eventually sold it to ESPN, where it became ESPN Classic.

“College athletics and the online community it generates represent one of the biggest sectors in sports television, and CSTV has made tremendous strides in capturing this market,” said Leslie Moonves, chairman of CBS and Viacom’s co-president and co-chief operating officer.

“We’re not only getting hugely valuable assets here, we’re acquiring a superb management team that has a proven record in building lucrative sports television franchises,” said Mr. Moonves.

CSTV distributes its programming through its television network, its network of about 250 official athletic sites, satellite TV and radio, in-flight services, wireless networks, and through online and pay-per-view subscription services.

The company raised $106 million in venture capital financing from more than a dozen investment firms as well as from individuals such as football legend Joe Namath, pro basketball player Kevin Garnett, and pro football players Brian Urlacher and Tiki Barber, according to Dow Jones’ Venture Wire.

CBS said the acquisition will give it the largest sports audience on the Web, with 19 million unique users. CSTV, which will continue to be operated by co-founder Bedol, will be integrated into CBS’ existing operations at CBS Sports and CBS Digital Media, CBS said.

“CSTV was built to offer college sports enthusiasts access to content for which they have passion,” said Mr. Bedol. “Through this transaction, we will now have the ability to help those consumers transition from the mass media of CBS Sports to the personalized media of the Web, and many points in between.”